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APT 231 

















Ih< statcm< tics made in dus book the 

unusual advantages >»l aluminum paint appl) 
only to p.iini prepared v\ it h .1 high qualit j alu 
mi Hum pigment su< h as AL oa A.lbron aluminum 
bronze powdci 01 past< Mummnm ( ompan) oi 

\m not sell paint hm th< bettci gi ad< ■ 

.1 aluminum paint , v\ hi( h 1 1 >nsi >t ol A K oa 

Ubron Powd< 1 01 Paste and .1 suitabli v< hi( l< , 
c .in be furnished b) most reputable paint manu 
l.u t urci s, jobbers and d< alcrs 

1 housand i of t 1 luci d b) 1 h< Mumi 

Minn Research Laboratories "I Aluminum ( om 
pan) 1 »l A UK t ica, pears 1 >1 si ud) and s< i* nt in< 

investigation and actual commercial experi 

1 1 1,, nati m< hi . in. iilt in 1 his book 

1 1 1 ailed infoi nui 1 in 1 hi a\ ailabl( 

if r< qu< ' 



Why Aluminum Paint Differs from other Paints. . . 9 
How to Secure the Best Results with Aluminum Paint 12 
Aluminum Paint is Filling a Wide Industrial Need 17 

Railroads 18 

Oil . 20 

Coal 22 

Gas 2 3 

Electric Power and Light 24 

Aviation 26 

Marine Industry . . 28 

Food 30 

Textiles 32 

Laundries 33 

Manufactured Articles 34 

Heated Surfaces 36 

Foundry Patterns 37 

Garages and Service Stations • ■ 38 

Water Tanks and Steel Towers 39 

State, County and Municipal Uses ... 40 

Creosoted Poles and Posts 42 

Interior Decoration 43 

Aluminum Paint as a Priming Coat on Wood 44 

Home Maintenance 50 

Farms 52 

Specifications for Aluminum Paint .53 





Ihc pigments of ordinary paints are fine particles in 
granular form. Alcoa Albron, the aluminum paint pig- 
ment manufactured by Aluminum Compan) oi America, 
is wholly different from ordinary pigments in form. 
action and result. When mixed with a suitable vehic k 

i.e. varnish), the tiny flat thin flakes of pure aluminum 
make possible the advantages found only in tins r\ pe 
of paint, 


As aluminum paint is brushed or sprayed on wood, 
metal, concrete— in fact, any surface, many of the tiny 
metallic flakes held in the vehicle, rise to the surface 
of the paint coating to form a "leafed" him. Thev 
lie upon one another, just as falling leaves pile to- 

"Leafing" is most useful. It gives aluminum paint 
much of its durability and moisture-proofing qualities, 
its power of reflecting light and heat, its resistance to 
smoke and fume, its hiding power. The flakes overlap 

» NINE « 

to form a film that is in truth a lustrous sheath of pure 
metal that is protective, handsome and durable. 


One would expect a paint whose pigment is composed 
of flat, bright metallic flakes to reflect light. In prac- 
it has been found that an aluminum-painted sur- 
reflects between 60 and 70 per cent of the total 
light falling upon it. The light is scattered in all di- 
rections, making aluminum paint useful for brighten- 
ing up interiors or for making objects more easily 
visible. Used on the exterior of tanks or on the roofs 
of buildings, aluminum paint reflects sunlight and 
heat, keeping interiors cooler. 


If a sheet of metal, no matter how thin, is put over 
any surface, it will, of course, completely hide that 
surface. Therefore it is not surprising to find that a 
paint made with a pure aluminum pigment has the 
ability to completely obscure or hide any dark-colored 
surface. The comparative hiding-power may be tested 
-ing part of the surface with aluminum paint 
and part with other kinds of light-colored paints. 
When compared with other coatings ordinarily used 
for interior or "brightening-up" purposes, the alu- 
minum paint will invariably have the better hiding- 
power, because it "leafs." 

Asphalt-covered surfaces are easily hidden with a 
single coat of this paint, and it is frequently used to 
eliminate the bleeding tendency of asphalt and bitu- 
minous coatings. This superior hiding-power of alumi- 
num paint is also very useful in covering age-darkened 
walls and other dark-colored surfaces. If it is prop- 
erly and uniformly applied, it will completely hide 

• ten . 

the under-color in one coat. This makes the paint 
a most economical kind, not only from the stand- 
point of material used, but also from the standpoint 
of the labor required to apply it. 


Much scientific work has been done to discover what 
makes paint fail. It is a well-known fact that sunlight 
penetrates ordinary paint films and is the chief factor 
in the breakdown of vehicle. 

The metal flakes of Alcoa Albron Powder and Paste 
stop and reflect both visible and ultra-violet light. Be- 
cause of their "leafing" action, they not only build a 
"roof" of metal over the film but also arrange them- 
selves in successive parallel layers throughout the 
vehicle giving continuous protection as the surface 
slowly weathers away. In this manner, the vehicle is 
covered up— protected from the destructive rays, and 
as a result, the paint lasts much longer. These facts 
also explain why the mixing of fillers or extenders 
such as mica with aluminum pigment shortens the 
paint's life. Aluminum paint is at its best, therefore. 
only when it is made with a pure pigment. 


The ability of aluminum paint to resist moisture is 
also an important factor in determining its durability 
and protective power. In tests of all kinds and under 
many different conditions, the moisture-proofing pow- 
er of aluminum paint is among the highest obtainable 
with practical surface coatings. For this reason, alu- 
minum paint is being used more and more as a priming- 
coat on wood, as a protective coat for steel structures, 
and as an interior finish, especially where moist atmos- 
pheres are encountered. 

>. ELEVEN « 



Uuminum paint, in order to give maximum serv- 
ind durability, must contain a properly manufac- 
tured pigment. Be sure to specify Alcoa Alhron Pow- 
der or Paste as the pigment portion of all aluminum 
paint purchased. It is often stated on the paint con- 
tainer that the pigment portion is Alcoa Alhron. 

Most reputable paint manufacturers are in a posi- 
to supply aluminum paints suitable for applica- 
tion i)n all types of surfaces, employing the correct 
vehicle and using Alcoa Albron as the pigment. Jt is 
furnished in double containers, in separate package 
vehicle and pigment, or in the ready-mixed form 
all ready-mixed aluminum paints retain their color and 
brilliancy or afford the same durability as paint 
packaged that they may be mixed as required. Ac- 
cordingly, in purchasing a ready-mixed aluminum 
paint, be sure that the product is backed by a reputable 
antee to the effect that the paint will offer satis- 
factory brilliance and durability. 

The recommended proportion of pigment to ve- 
hicle varies with the grade of powder or paste em- 
ployed, as well as with the type of surface to be painted . 
The specifications on pages 53 to 61 give the mi 


'. Cros s tt 



' \l "ihers of the It 

photogt.. 1 '■' •/* excellent iminum pamt 

proportions of pigment to vehicle found to be most 
satisfactory. These specifications also describe the 
hides required for best results 


Varnish vehicles for aluminum paint are of almost 
universal application. Varnishes in genera] arc made 
from heat-treated drying oils in combination with 
various varnish gums, both natural and synthc 
Some of the newer varnishes, which combine rapid 
drying time with high flexibility, moisture- and 


weather-resistance are made from synthetic resins pro- 
duced by complex chemical processes. 

A varnish vehicle for aluminum paint for exterior 
use should be of the long oil type, that is, the propor- 
tion of oil to gum should be sufficiently high to give 
a varnish of good elasticity with satisfactory hardness 
and drying time The well-known spar varnish is a 
long oil varnish but, in general, the varnishes used for 
aluminum paint are even more elastic than the average 
spar varnish. Long oil varnish vehicles for aluminum 
paint are supplied by manufacturers for use on weather- 

>scd steel and both interior and exterior brick, 

< rete, stucco and plaster. 

lor priming wood with aluminum paint, a varnish 
having exceptionally high elasticity is recommended 
as the vehicle. Such a vehicle may be described as a 

long oil varnish to distinguish it from the long oil 
varnishes previousl) referred to. It should possess the 

ida, furnished 
f lumber primed with aluminum / 


accessary elasticity for maintaining satisfactory ad- 
hesion to wood, together with desirable moisture- 
proofing qualities and satisfactory drying time. Al- 
though its chief use is as a priming coat vehicle for 
wood exposed to the weather, it may also be used 
for top coats that give a surface finish oi unexcelled 


The better grades of bituminous and asphalt paints 
usually consist of pitch or asphalt combined with 
suitable thinners and may contain drying oils and gums. 
When these dark-colored vehicles are mixed with a 
leafing aluminum pigment, the resultant paint pro- 
duces a brilliant aluminum-colored surface. The valu- 
able properties of such paints make them particularl) 
well adapted to many special surfaces where varnish 
vehicles cannot be satisfactorily used 


The modern lacquers largely consist of nitro-cellulose, 
gums, and plasticizers dissolved in suitable thinners. 
For many uses they have been found to be quite tough 
and durable. Aluminum powder may be used satis- 
factorily with vehicles of this type where a rapid dry- 
ing finish is required, as in painting various small 
articles on a production scale. Usually their cost is 
somewhat higher than that of oil-base vehicles. 


Heat-resisting vehicles may contain a wide variety oi 
materials, but they are usually of the gloss oil type. 
Aluminum paint made with these vehicles may be ap- 
plied to metal surfaces which are to be heated, with- 


our fear of destroying the paint film. However, these 
paints are rather brittle in nature and cannot be ex- 
pected to show much durability on outdoor exposure. 
They arc, therefore, not to be recommended for stack 
painting. Their use should be largely confined to fur- 
naces, piping, etc. 


Besides the vehicles already mentioned there have been 
and are being developed numerous vehicles so varied 
in their characteristics that it is impossible to de- 
scribe them briefly. Many of these have valuable 
qualities for certain purposes. Each, however, should 
be investigated for its merits and its adaptability to 
an) particular use. 


Aluminum paint serves as an unusually good priming 
coat for wood and may be used successfully as a first 
coat on steel. However, it has been found that under 
severe exposure conditions better results are obtained 
it a high-grade inhibitive primer is used on the steel 
before the aluminum paint is applied. 



» » 

The several industries covered in the following 
pages do not offer a complete picture of the 
diverse uses of alum mum paint. Each industry 

has its own individual, specific problems and 
needs. Those mentioned here are just some ex- 
amples that illustrate the many powihle ap- 
plications of the ' 'coat of metal protection. 


utdoors or indoors — on almost every type of sur- 
face: wood, metal, concrete, plaster — on machinery, 
tools, tanks, towers, fences or on structures of all 
sorts — for protecting and brightening, aluminum paint 
fulfills practically every painting need. Probably no 
other single paint meets as many requirements. Cer- 
tainly no ordinary paint can give some of the results 
obtained through the use of this "Coat of Metal 

Many manufacturers and plant owners have proved 
the value of aluminum paint. They insist upon its pro- 
tection to their investments in plants and equipment. 
They have found that its bright, lustrous film makes 
general lighting conditions better. They know the 
easy washability of this metallic coat, have seen its 
long life through temperature changes, moisture, 
steam, smoke and acid fumes. 


rior of Detroit CT Toledo Shore Line R. R, roundhouse 
to protect it from sulfurous fume and to improve lighting conditions. 



* Railroad structures, roundhouses and shops, put 
paint to the most relentless, destructive, day-in-and- 
day-out tests. Here are concentrated blasts of steam, 
sulfurous fume and smoke — the enemies of paint. 

Ever in search of lowering upkeep costs, railroad 

officials quickly put to test the benefits of aluminum 

paint. Today you will see it along right-of-ways on 

1 towers, water tanks and transmission towers. 

aid to vision is vital, the high reflectivity 

of this metallic paint has proved invaluable. 

Steel bridges and other right-of-way equipment 
which are constantly subjected to smoke fumes, re- 


quire the super-protection of aluminum paint. Sul- 
furous gases are checked by this film. Steel and iron 
have a much longer usefulness, repainting jobs are 
fewer. Wherever used, thisattractivegleamingfinishhas 
a strong appeal. It is a fine advertisement to passengers 
that suggests extra care, progressiveness and prosperity. 
Used inside the roundhouse, shops, freight houses 
and supply rooms, aluminum paint greatly improves 
the general lighting when used on walls, ceilings and 
doors. In the painting of rolling stock, this protective 
film not only cuts down paint costs, but is generally 
efficient. For refrigerator cars, dining car kitchens, live- 
stock cars, it is a general aid to sanitation; it can be 
repeatedly washed down, and retains its silvery sheen 
through long, hard service. Used as a priming coat 
for all wood structures, it gives 
substantial and durable protection 
to the wood. 

For decorating waiting-rooms 
of passenger stations, aluminum 
paint is both a serviceable and 
attractive finish. Furthermore, it 
is economical. One coat, on any 
kind of a surface, is usually enough 
to hide any under-color. See 
"Interior Decoration," page 43- 


Signal posts of 
Texas and Pacifit 
R. R. made highly 
visible and pro- 
tected from the ele- 
ments by alumi- 
num paint. 

Aluminum paint reflects the sun's heat from the Merchants Dispatch 
Refrigerator Line Cars. 




Hancock Oil Co , Lor. g r 
r<7«4 /<7rw <?/7</ equipment fainted 
jluminum paint. 



* Besides the unusual protection against rust and cor- 
rosion given by aluminum paint to metal surfaces, the 
oil industry makes use of another one of its properties 
— namely its ability to reflect heat. 

As mentioned before, aluminum paint reflects the 
hot rays of the sun. Applied to oil tanks, aluminum 
paint keeps their contents cooler and so reduces loss 
from evaporation. Millions of barrels of gasoline are 
.arly through the use of this bright metallic 
:. Anyone acquainted with the production or 
refining of oil knows how extensively this industry 
depends upon aluminum paint. Scientific tests and 
practical experience have proved to oil men that, in 
the long run. it is the most economical paint to use. 

The l\ S. Bureau of Mines has demonstrated this 
fact in an interesting series of tests (Serial \ Q . 2677). 


On the huge 80's in the fields and on other equip- 
ment used for the production, storage, refining and 
transportation of oil, aluminum paint is providing a 
real ally to conservation. Railroad tank cars protected 
with aluminum paint are better carriers of oil and 
gasoline, because more of the product reaches its 
destination — fewer gallons are lost by evaporation. 

The fact that aluminum paint resists the action of 
hydrogen sulfide and other corrosive fumes present in 
sour crudes is an added reason for its use on all sorts of 
equipment in the oil industry. Not only does alumi- 
num paint hold its color in the presence of hydrogen 
sulfide, but if made with the proper vehicle the paint 
will prove to be a most durable coating for all types 
of structures. Again, this protective quality results 
from the paint's metallic pigment which is, itself, 
highly resistant to sulfur and sulfur compounds. 

Aluminum paint is also gaining popularity in the 
marketing division of the oil industry. It is used on 
bulk storage tanks to reduce evaporation and preserve 
the equipment, and it is being used more and more to 
give a distinctive appearance to service stations. 


I The Pittston Co., Throop, Pa., coatt.. mum paint for 

protection and better appearance. 



* I scd as an exterior finish on collieries and other 
coal mine surface buildings, pipe lines and towers, 
aluminum paint changes the customary drab appear- 
ance of these structures to one having a distinctive 
metallic luster. Buildings so painted have a greater 
advertising value because they indicate a well-kept and 
prosperous mine. Maintenance engineers also appre- 
ciate the economies obtained with aluminum paint. 
Besides retarding the weathering of wood and the for- 
mation of rust, it is itself long-lived and economical. 
For economy and lasting good appearance, alumi- 
num paint is unsurpassed for houses and other build- 
ings in company-owned towns. It has been used on 
entire villages for both priming and finish coats on 
wood construction. (See illustrations on pages 50 and 
51.) Its durability and hiding quality makes alumi- 
num paint particularly applicable for repainting where 
only one coat is desired. 


' tm paint add 

' !ders. 




* Many of the same advantages which have made 
aluminum paint so necessary in the oil industry hold 
true for gas plants. It proves a definite econom\ at 
every step. 

Used on pressure storage tanks, this metallic film 
helps save the gas itself — cutting down losses from 
blow-off valves in hot weather. For, it reflects heat 
from the sun — keeps tanks cooler, reduces temperature 
and pressure changes. 

Furthermore, metal tanks, and other gas plant 
equipment need this protection against hydrogen sul- 
fide and other gases. Aluminum paint checks rust and 
corrosion and preserves the life of steel. It improves 
general appearances a hundredfold. Yet, gallon for 
gallon, aluminum paint, with all of its superior 
qualities, costs no more than other good paints. 



. n 

K - 


lelphia Electric Company specified aluminum paint for this 
Conowtngo Dam, Conowtngo, Md. 




* To purchasing men for many central stations, alu- 
minum paint long a >ed to be an experiment; 
its use has become a standard specification. It is rapidly 
replacing other types of paint on transmission towers, 
on exposed transformer boxes and other similar units 

Because this efficient coating of pure aluminum re- 
sists moisture and corrosion; it successfully lights the 
destructive ultra-violet rays of sunlight; it is a secure 
defense against sulfurous fume or smoke, it defers the 
time for repainting, it curtails general upkeep expense. 



As a matter of fact, you won't have to search far to 
find innumerahle proofs of the economy of this paint 

Then again recall the ugly colored structures which 
used to characterize substations! Today, these struc- 
tures gleam with a lustrous, crisp beauty that goes a 
long way in creating a favorable public impression. It 
also adds to the important factor of visibility. 

Manufacturers of electrical equipment have put 
themselves enthusiastically back of aluminum pamt, 
for decorating and protecting fuse boxes, meters, 
switch panels, and all sorts of instruments. In their 
own plants, this modern coating is used as an interior 
finish — adding greatlv to lighting efficienc) 

Aluminum is the standard finish for practically all tran I 
line towers. 


million ooar 

i-feet of mill-primed lumber wa 

red in its construction. 



* Both visibility and protection are vitally im- 
portant in the field of aviation. On the planes, them- 
selves, aluminum paint has long been accepted as 
standard protection to wings and to wood and metal 
parts. But, its use has widened extensively. Today 
many hangars and markers at airports are so painted. 
The aluminum paint coat stands out and is visible to 
the aviator miles away. 

This paint is also easy to use for "touching up" 
surfaces. Inasmuch as the new application blends 
readily with the old, a complete repaint job is not 
necessary from the standpoint of appearance. 

As a coating for fabrics used on wings and fuselages 
of planes and in the covering of rigid airships, alumi- 
num paint has the choice. It preserves the material 


because its bright surface turns back the sun's harmful 
rays. Furthermore, it reflects the sun's heat and re- 
duces temperature changes in the gas cells — hence 
stabilizes the buoyancy of lighter-than-air craft. 

Manufacturers who have found aluminum paint 
valuable for their products are also drawing upon its 
qualities for their factories. When used as a finish coat 
for interiors, it improves working conditions because 
it is an aid to illumination; it gives the plant a bright, 
clean appearance. Aluminum paint is also a durable 
and attractive finish for all outside steel work. It pro- 
tects metal against rust and prolongs the life of the 
equipment. Its advantages as a priming coat on wood 
arc well-known. The moisture-proofing ability given 
to the paint by its metallic pigment minimizes warp- 
ing and checking of the wood, which not only pre- 
serves the appearance 
of the building, but 
reduces upk, 



The aluminum-painted roof trusses and ceiling of the Curt tss-W right Airplane Companj 
Robertson, Mo., plant reflect an evenly distributed light over the entire working area. 







* t place to dc- 


aluminum | 

' uJJs 

ship companies paint their tankers and freighters in- 
side and out with aluminum paint. Used on engine 
rooms, fire rooms, cargo holds and companion ways 
this bright metallic coating increases illumination, 
wears longer, and is readily washed. It is easy to apply 
and costs no more than other good paints. 

Piers, dry docks, warehouses and other shore line 
structures are maintained economically whenever alu- 
minum paint is used. After making a series of tests 
using 10 different paints, the Board of Commissioners 
of the Port of New Orleans selected aluminum paint 
for the steel foundations of the New Orleans docks. 
The foundation is under water approximately 10 
months of the year. 


Clyde M mship Co., Pier 34, North River, New York City, largest pter on the 

seaboard. The entire interior is fit 


\ago, coats ex- 
*(d piping and equip- 
ng and bottling plants 
>ntm paint 

■ erne cleanliness found 
'it ire plant, ti 

>ntnum paint for these 




* Certain qualities of aluminum paint which are of 
slight interest to the industries just discussed are 
highly valuable to the Food Industry. 

Aluminum, to the housewife, has long been known 
as the standard, safe metal for her pots and pans. 
Aluminum paint has this same value, for it is composed 
only ol pure aluminum and a vehicle. 

Food manufacturers, packers, and others handling 


perishables, rely upon aluminum paint because it is 
harmless and will not contaminate food. Where every 
sanitary precaution is necessary, such a paint is in- 
valuable. Wherever painted surfaces come in contact 
or are near delicately flavored foods, this protecting 
film is needed. 

Aluminum paint is also an aid to cleanliness, for it 
can be washed down often without injuring the film 
or luster. The light-reflecting ability of this paint also 
increases the general illumination inside — makes bet- 
ter working conditions. 

Another reason for its use is its resistance to mois- 
ture. In cooking rooms, dairies, and ice cream plants, 
this paint remains unaffected through long usage. In 
refrigerator rooms, aluminum paint can be applied di- 
rectly over bituminous or asphalt paints. It prevents 
the "bleeding through" of stains and one coat, prop- 
erly applied, will hide any under-color— even black. 
It is also used in pickling rooms because of its high 
resistance to acetic acid fumes. 

Freezer Room of Mutu ., Chicago, pa/nfrJ with aluminum paint. 


Con tm fun 



* Aluminum paint is the one "all-round" paint. In 
the- textile field, it meets many strenuous tests chiei 
hich. perhaps is its capacity for resisting the 
action oi fumes and gases in dye houses and moisture 
in we Minis, plus the important advantage oi its 

ibility in loom and spindle rooms. The light 
it reflects is soft and e-ffeet i • 

The in, the textile nulls make wide use of 

this gleaming coat on structures out-of-doors on 
! towers metal window frames, fire escapes 
and fences. Company-owned towns find this paint Mi- 
neral protective coating on houses. 
Manufacturers have proved to their own satisfaction 
that aluminum paint deliver 

more Over a period of time, the 
;s effected are many. Furthermore a plant 
that is attractively painted has a real advert! 
value which should not looked. 







* The condensation of moisture on ceilings An<.\ over- 
head pipes is often a serious handicap to the produc 
of good laundry work. Drops of water that fall on 
clothing may leave dirty spots or stains. 

It has been found that aluminum paint on such 
surfaces minimizes and even eliminates the formation 
of drops of water large enough to fall off. One laundry 
applied a single coat of aluminum paint dn<.\ found 
that the formation of water drops was somewhat re- 
duced, a second coat reduced it further and a third coat 
stopped it entirely. Although moisture still condensed 
on the painted surface, it did not form m large drops. 

Such a painted surface is also easy to keep clean 
and will stand repeated washings before repainting is 
necessary. It improves the illumination and general 
appearance of the laundry, both of which are im- 
portant factors to good working conditions and the 
reception of customers. 





* Manufacturer^ agree that the use of aluminum 
paint on many articles is a top-notch sales point. It 
• he attention of passersby. A "silvery" surface 
always appeals gn tng one the assurance of newness, 
•lie product in spick-and-span condition It is 
ideal tor providing your goods with an attractive and 
durable coat: 

Bl- irse, the attractive appearance of alumi- 

num paint is only one of its main desirable features. 
for metal products of all sorts, 
tnous bar to rust, resists corrosion, is enduring 
in the face of fume, smoke and steam. 


Some of the articles, now beautified and safeguard- 
ed by aluminum paint, are: cream separators, gas 
meters, lawn mowers, toys, stoves, washing machines. 
mail boxes, electrical apparatus, dairy equipment, 
steel gates, posts, water coolers, tennis racquets, car- 
stop markers, movie screens and gasoline drums. 

Many products made of wood such as doors, cabi- 
nets, cupboards, window sash, etc., are given a coat- 
ing of aluminum paint. It not only serves as a dis- 
tinguishing "mark" for the product but it is a most 
excellent prime-coat for all wooden articles. Many 
lumber products are now being primed at the mill 
with aluminum paint. 

For application, aluminum paint can be brushed or 
sprayed, giving satisfaction in both cases. It can be 
baked on metal products — a protective coat of ex- 
ceptional hardness results. Lacquers can be used, tot- 
speeding up production— and if low cost is essential 
and durability not a factor, gloss oil can be used. 


For b(\' 

tcction, aluminum p 

used on all kinds oj 

products such 
it boxes. 

Two coats of aluminum 
pamt tt the standard finish 
for "Air King" compressors 
made by Metalweld Com- 
pany, Inc., /' 


Bo tier room eqm; 

the Carrol/vi/,' 

plant o • 

Chemical Corp. .protected 



A uminum paint is used to advantage on boiler- 
equipment, melting and heat-treating furna 
or. in fact, on any heated surf. a 
Furnace- operate with greater economy when the 
are aluminum-painted, in some igher 

temp attainable, or if this is not desirable. 


the operating temperature may be maintained with 
less electrical energy than when an ordinary brick or 
iron surface is employed. The reason for this lies in the 
ability of aluminum paint to retard the passage of heat 
from the furnace walls to the surrounding air. An ad- 
ditional important advantage of aluminum paint on 
furnaces is that it makes working conditions more 
comfortable because of the reduced heat-flow into the 

It will be found that aluminum paint, made with 
the proper vehicle, can withstand furnace-surface 
temperatures without breaking down or discoloring. 
As a result equipment protected with it is not only 
more economical to operate but has a better appear- 
ance even after a long period of use, 

When aluminum paint is used throughout — on 
walls, ceilings, furnaces, pipes, etc., it adds much to 
the general appearance of the room and greatly in- 
creases visibility. 


* As outlined before, aluminum paint has remark- 
able ability to withstand moisture. This makes it an 
ideal coat for foundry patterns. Ordinary shellac is 
used as the vehicle. The aluminum pigment practically 
prevents the raising of the grain and consequently less 
sanding is necessary. Fewer coats are required. A coat- 
ing of this aluminum paint minimizes moisture changes 
and aids in keeping patterns uniform in shape and 

The surface provided by aluminum paint made 
with shellac is durable and smooth — sand will not 
readily adhere to it; patterns come easily from the 
molds. Also less repairing of molds and less cleaning 
of patterns are required. 





• illumii 


Gleaming aluminum paint p 
adequate protection from tht 
lor this .. 

of St. Petersburg, I . 

The City of Rana p M . 

an ally in aluminum 

tec ting ti ■. </• rust. 




* Tanks and towers have an individual need for 
aluminum paint. Standing, as they do, high above 
their usual surroundings, with complete exposure to 
sun, rain and snow, they must have unusual protec- 
tion. Again, they are often located in out-of-the-way 
places, where access is difficult. 

Then, too, the rich, metallic beauty of this paint 
is a definite benefit — making water ranks, steel towers 
and other structures look better and cleaner for a 
longer period than will ordinary paints. The public 
notices it; appreciates it. There is no finer way to im- 
press on a community that your equipment is modern 
and in tip-top shape. 



■ . 



* rherc arc several good reasons why aluminum 
with Alcoa Albron, lias been written into 
lard specifications for municipal propen 
In the first place, this metallic paint makes metal 
surfaces gleam with a rich "silvery" luster 
which endures through long and severe weather 
( ic pride finds full expression in "the coat 
-ial protection" you'll see it on bridges, lamp 
poles, traffic signals, fire-hydrants, 
>f structures in public parks. 
Vrchitects have repeatedly specified aluminum 
approving the ability of this j 
t () harn tee! members with concrete. 

- F OR T 

Beauty, however, is not the sole advantage sought 
by municipalities or civic organizations. Cost must be 
right; protection must be thorough. Here, again, 
aluminum paint holds its own, as an investigation 
will prove. For hiding power, coverage, resistance to 
moisture, smoke and fumes — this metallic paint meets 
all the requirements. And as for price — gallon for 
gallon — aluminum paint costs no more than other 
good paints. 

One big factor, that is always an aid to community 
betterment, is that the public quickly "rakes to" its 
charm. Once a city has started the beautifying job, 
private owners arc quick to follow with an aluminum 
coat for their tanks, towers, gas holders, plants. 
Owners of private residences soon step forth with 
trellises, benches, fences and 
other properties dressed in this 
attractive metallic coating. 

Three- light signals, beacons and other traffic 

control devices are made more visible and blend 

better with their surroundings when they are 


Franklin Field \t.tdtum, University of Pennsylvania. All structural members art 
with aluminum paint 



POSTS are more visible when 
painted with Aluminum Paint » » 




* Public utilities and statu highway departments 
times find it necessary to increase the visibility of 
ii their structures built of creosoted material. 
This is true of highway guard-rail posts, poles and 
utility structures found along public right-of- 
ways It is not generally practical to use ordinary 
paints on creosoted wood because the coating soon be- 
comes discolored and loses its visibility. However, 
often a single coat of aluminum paint will completely 
hide the creosote color. It retains its bright metallic 
sheen and thus gives a creosoted post the added quality 
of high visibility, particularly at night. 

The painting should be done after the creosoted 

lumber has had ample time to weather, as a satis- 

ry job is not usually obtained when the paint is 

applied to a freshly creosoted suri cial vehicles 

are essential for success in this application. 

dv used, aluminum paint on creosoted wood 
momical solution to the problem of 
hilitv It is easily applied in the field and costs con- 
siderablv less than some methods resorted to. such as 
nailing to the pole, vertically, untreated strips of v 
which are painted white. 




r, blends nicety with the 




* Aluminum is one of the most effective colors avail- 
able for decorating modern interiors. It may be used 
alone or with many harmonizing or contrasting colors 
such as blue, green or terra cotta If it is plaster that 
is to be painted, it should have a sanded or rough sur- 
tax to obtain the most pleasing results. A roughened 
effect can be obtained on smooth plaster by stippling. 
This is done by means of a sponge dipped in a rather 
thick aluminum paint. 

Aside from its decorative value, aluminum paint 
used as a first coat seals "hot spots" in plaster Used 
as a finish coat, it reflects approximately 60 to 70 per 
cent of the light falling upon it. 



. repainted it 

ng power and 

>ier decided to do no ' ■ tograpb 



* In reporting on the study of protective coatings for 

wood. Dr. F. L. Browne, Senior Chemist of the U. S. 

t Products Laboratory, Madison, Wisconsin, 

S in an article entitled "How Properties of Wood 

rminc the Service Given by Exterior Paint ( 

which appears in the American Want Journal^ 

Volume 14. Number 25: 

•'The : >od, however, ought to remain an 

adequate protective a^cnt against wood weathering until its 

jed that repainting is clearly aeCCf 
and it ought uniformly over sunimcrwood and 

alike, being firmly anchored to all parts of the 
•.hen repainting is done Flaking from summcrwood 
should be unknown. With such a paint, all wood suri.. 
• • • ■ ice. 


A Mobile, Ala., home but ■ 
This photograph taken in 

- exposure. 

A good priming coat for wood should enable lumber 
to give long service and at the same time add to the 
life of top coats. Such a primer should show equally 
good adhesion to spring wood and summer wood, and 
at the same time offer satisfactory "tooth" for suc- 
ceeding coats. It will also show high resistance to 
moisture passage not only when newly applied, but 
also after long weathering and long exposure to the 
destructive action of sunlight. Although sonic paints 
may have good resistance to moisture at first, they 
are soon broken down by weathering and sunlight 
and their elasticity destroyed. This permits wide 
moisture changes to take place in the wood. These 
changes in moisture content promote rapid, shrinking 
and swelling of the wood surface, resulting in further 
destruction of the embrittled paint film. A good 
primer must retain its moisture resistance and elas- 
ticity to be effective. 

The results of many quantitative measurements 
show that aluminum paint not only has high initial 


tun resistance but retains its impcrmeabilit) bet- 
ter when exposed to the weather than other paints 


i h 11 N( } 




; Vluminum Paini 




I h metallic pigment ol aluminum paint 

acco ol its valuable propcrt 

ol the metal flakes, laj 
hout the paint film, makes n 

tration extremely difficult. These opaque flakes further 
contribute to the pamr's durability b\ stopping and 
reflecting the harmful sun rays, the penetration of 
which is the principal cause of eventual paint failure. 
Aluminum primers, because they maintain their elas- 
ticity, adhere more uniformly to both spring wood and 
summer wood, and provide a good "tooth" for the 
adherence of top coats. It is because of these qualities 
that aluminum paint is recognized as an unequalled 
priming coat for wood. It not only adds hu to top 
coats but also aids in maintaining their good appear- 

Wood has always been and will continue to be an 
important construction material despite the faci that 
many new building materials have been introduced 
during the past few years. Its low cost is an important 
consideration and furthermore it lends itself readily 

ide of Southern yellow fine. The rt Primed 

with a good grade of white paint, while the left hand pant tminum 

paint. Two top coats of paint were then applied to both. This photograph shows the con- 
dition of the paint after 3 years' exposure. 


■mtnt house l of mtll-primed r/'i 

CO architectural design. Properly protected it is long 
lived. This is the reason why the selection of a 
satisfactory primer is of so much importance. 

The usual practice is to prime lumber after the 
building has been erected. Aluminum paint applied 
to the weather-exposed surfaces only, offers consider- 
able protection to the wood against the effects of 

moisture, and the integrity and beauty of the finish 
is maintained for a long time. Of still greater value is 
the practice of painting the lumber on all sides with a 
of aluminum paint. Each board is thus "sealed" 
with a coat of metal protection with the result that 
moisture changes in the wood are still further reduced. 
Back-painting of lumber may be performed by 
painters on the )ob or at the mill. In the latter 
each board is protected against rapid moisture changes 
during transit and storage. Mill-priming has a number 
() * advai • \er priming in the field, and mill- 

primed lumber is available in many forms. Such prod- 
ucts as drop- and bevel-siding, ceiling, flooring, gut- 
and most other kinds of mill work are being pro- 


mplete hiding ; 

tected in this way immediately following the kiln- 
drying or seasoning process. Seasoned wood, .in it 
leaves the mill, normally has the correct moisture 
content, and, protected with a coat oi aluminum paint, 
it arrives at the job in practically the same condition 
as it left the mill. Furthermore, it is read) for Hi 
coats which may be applied with insurance 

of a more satisfactory and better appearing paint job. 

Blistering and peeling of new l\ applied paint coat- 
and the bleeding through of discoloring stains 
are minimized because the unexposed surfaces, ordi- 
narily not painted, are now protected against the 
cess moisture which is usually present in newly-built 
homes. It must be remembered, however, that mill- 
primed lumber will not overcome all of the paint 
difficulties arising from faulty building construction 

The practice of mill-priming and back-painting 
with aluminum paint are having a marked influence on 
the use of wood. Lumber, so protected, is a better 
building product and will give longer trouble-free 


- Steel Company, Oxford, S J 



* >r the maintenance oi both individually owned 
home 11 as entire villages owned by industrial 

aluminum paint is being used as the one all- 
purpose pro- Irs value as a priming 

rail) recognized, and some 
have aKn used it tor the finish coats 
on I 

ie coat of aluminum paint on the walls and 

• ill make a surprising 

brightness to any dark 

The furnace, piping and water 

hould have this "coat <>f metal pr 

. FIFTY . 

tion." For "touching-up" miscellaneous arti 
every home owner should keep a can of aluminum 
paint handy. It will contribute to a bright, cleanly 

Outside the house there arc many suitable phi 
for this additional beauty m^\ protection. For in- 
stance, fences, trellises, summer houses, swii 
boxes and flag poles are instantly given a harmonious 
modern charm that is noticeable to L\.T\one The 
metallic luster is lasting because aluminum paint 
holds its color Benches and other garden furniture 
panned with it become silvery highspots agaii 
background of greener) 

Inside tin garage a single coat of aluminum paint 
is enough to brighten up the place and protect the 
surface It the entire interior is aluminum-painted, it 
can be kept clean by washing down with a h 

» F I F T Y - O N E ■ 

The al J barn and double silo make the Southcott Bros. I 

Prair; '/-known landmark. 




* Unless their equipment is properly protected 
farmers y.i\ a heavy annual bill to rusting metal and 
weathering wood. Aluminum paint used on buildings, 
silos, ventilators, machinery, posts and other kinds of 
equipment will eliminate a large part of this loss. 
Machinery is often exposed to all kinds of weather 
and needs the protection offered by this metallic pig- 
ment paint. 

Inside the barn, where work is carried on early in 
the morning and in the evening, visibility can be in- 
creased by the use of aluminum paint which has i^ood 
light-reflecting qualities. This paint will also with- 
stand the atmospheres found in barns, poultry houses 
and other such buildings. 

There is scarcely an article or piece of equipment 
about the farm that does not need the protection 
against the elements offered by aluminum paint the 
paint which has a hi^h resistance to moisture because 
its metallic pigment "lea! 





1. Mixing: Aluminum paint shall be freshly mixed and only 
enough for one day's use shall be mixed at one rune \n\ paint 
remaining after this period may be mixed with freshl) pn 
paint, if it does not exceed In' , of total newly-mixed paint. 
The paint shall be mixed in the proportion ol 2 pounds oi 
Albron Powder or Alcoa Albron Paste per gallon oi vehicle, 
or as otherwise specified. The weighed . ment shall 
be placed in a suitable mixing container, and a m< >lume 
of vehicle shall be gradually ak\^\ to it with continuous stirring 
until a uniform paint is obtained. Each tune an) ) 

from the mixing container, the paint shall again be thoroughly 
stirred to insure proper mixing. The paint shall also be frequently 
stirred during use. 

2. Application: Aluminum paint ma) be applied with either 
spray gun or hand brush It spraying equipment is emp] 
only sufficient pressure should be used to secure adequate 

tion. Excessive pressure should be avoided For spra) ing pur] 
thinners may be added as required but not to exceed 1 0* , of the 
total volume of paint. If a brush is used, care should be taken 
that all final brush strokes are made in the same directioc 
cessive brushing will result m streaking and darkening, a\\^\ 
should be avoided 

3. Painting Weather- Exposed Steel — New Work: The steel 
face to be painted shall be thoroughly clean and dry. Oil and 
grease shall be removed with mineral spirits Rust, mill scale, 
dirt or other foreign matter shall be removed b) cratch-brushing, 
scraping or sand-blasting. No painting shall be done in wet 
weather or when the temperature is below 40° F. or when there 
is frost or moisture condensation on the steel. At temperatures 
below 50° F., the use of a maximum ot 10^ thinner, such as 
mineral spirits, is permissible A good rust lnhibttive priming 
coat shall be applied And allowed to dry tor at least 4s hours 


r/ w0 coats* "i aluminum paint made with Alcoa A I hi on Pou 
01 p a stc and Long Oil Varnish as specified in Paragraphs 12, L3 

hall then be applied ovei the priming coat, allowin 
[cast 48 hours di \ ing time between coal 

Painting W eathcr-l xposed Steel Old II ork rhe steel sur- 
. from rust, loose paint, loosel) adhering mill 
and othci foreign mattci Oil and grease shall b 
I w ith mineral spirits No painting shall be done in wci 
hen the temperature is bclovs -l ] I 01 when tru 
„ moisture condensation on the steel U temperatures 
1 c hc use- oi -i maximum ol 10* , thinnei . such as 
,1 spirits, is permissible Ul bare sp<^ shall he touched up 
w ith a good rust inhibitivc priming paint rwo coats* of alumi- 
u 1( h Ucoa Ubron Powdei oi Paste and I 
pc< ificd n hs L2, 13 or 14 sh.ill then be 

i, allowii hours dr) ing time between coats 

Painting II eather-l xposed II ood Seu II ork: The surface 

h.ill he thoroughl) ( lean and dr) No painting 

shall he done in w t 1 or fi athei oi within 24 hours 

t t ,llou ing a rain \ pi in iluminum paint shall be 

ii fac< 1 lie paint sh.ill consist ol I ' •> 

Ubron Powdei oi - 1 pounds oi Alcoa Alhron 

| on ol the varnish vehicle foi wood Very Long Oil 

\ ,, ificd in Paragraph 16 oi the vehicles described 

)n Paragraphs 13 oi 14 t racks as well as countei sunk nailht 

,11 | H filled with -i \ood putt) before additional paint i 
a i ; aluminum paint ai 

paint made with 2 i I Ucoa Ul 

Pqvn 1( i ..i I ..lion ol vchl< le \( 48 horn 

time shall be allowed ben ►thci top coati ma) 

Painting II eathi > I xposed II R " 

at< h bruil 
h| lint and then tl 

hall be filled w ith pun 


.1 1 1111) 1 1)11 I 

wood (Very Long Oil Varnish), as specified in Paragraph 16 
or the vehicles described in Paragraphs 13 or 14, shall then be 
applied. A drying time of at least 48 hours shall be allowed before 
top coats of paint are applied. If 2 coats of aluminum paint are 
specified, the second coat shall consist of a paint made with 2 
pounds of Alcoa Albron Powder or Paste per gallon of vehicle. 
Other top coats may be used as specified, allowing the same 
ing time. 

7. Painting Wood — Interior: It the wood has previously been 
painted with a high gloss finish, the surface should be sanded 
before any paint is applied. (This applies particularly to interior 
trim). The aluminum panu shall consist oi Alcoa Albron Powder 
or Paste mixed with the Interior Varnish, as sj 

15, in the proportions of \ l /2 pounds per gallon of vehicle. If the 
work is specified to be left in rhe aluminum finish, 2 coats oi the 
same aluminum paint shall be applied, allow hours 

drying time between coats. 

8. Painting Brick, Concrete and Plaster: The surf a 
painted shall be dry and free from all loose paint, dirt and calci- 
mine. The paint shall consist of \ l /2 pounds to 2 pound 

Albron Powder or Paste per gallon of a varnish vehicle, as speci- 
fied in Paragraphs 12, 13 or 15- If the surfaces are expose I to the 
weather, 2 coats of aluminum paint shall be applied, us 
pounds of pigment per gallon of vehicle for the sc it, and 

allowing at least 48 hours drying time between coats. For inte- 
riors, one coat may be sufficient. 

9a. General interior Work: For ordinary interi one 

coat of aluminum paint is usually sufficient. The panic shall 
consist of V/l pounds to 2 pounds of Alcoa Albron Pou 
Paste per gallon of the Interior Varnish specified in Paragraph 15 

9b. For Interiors Exposed to I r nusual Conditions: Where unusu- 
al exposure conditions exist, such as acid fumes, high humidity, 
etc., all steel to be painted shall have a rust inhibitive priming 
coat applied. Two coats of aluminum paint, using the varnishes 
specified in Paragraphs 13 or 14, mixed with 2 pounds of Alcoa 
Albron Powder or 2j/£ pounds of Alcoa Albron Paste per gallon 
of vehicle shall then be applied over the priming coat. Two coats 
of the same aluminum paint shall be applied on all other surfaces. 
The painting procedure described in Paragraphs 2 to 6 shall be 


10. Painting Metal Surfaces Subject to High Temperatures: 
In painting metal surfaces which reach high temperatures, special 
care shall be taken to insure a clean surface. A roughened surface 
will also improve the adherence of the aluminum paint film. 
For surfaces which reach temperatures in excess of 400° F., an 
aluminum paint consisting of Alcoa Albron Powder or Paste 
mixed with a Heat-Resisting Vehicle, such as described in Para- 
graph is, in the proportion of 2 pounds to 3 pounds of pigment 
chicle shall be applied. For surfaces, the tempera- 
ture of which does not exceed 400° F , Spar Varnish, as described 
ragraph 12, may be used as the vehicle if diluted with at 
by volume, with thinner such as mineral spirits. 
The abovt recommendations do not apply to heated surfaces ex- 
posed to the ncathcr such </* unlined stacks or stack breachings. 


//. Pigment: The pigment portion of the aluminum paint 
shall ( \koa Albron Powder (aluminum bronze powder 

Ubron Paste aluminum paste manufactured by Alu- 
minum ( ompan) of America. 

P dtr: The aluminum bronze powder 
shall be Standard. Varnish Alcoa Ubron Powder. A finer grade 
'.vn as Standard Lining Alcoa Albron Powder may he 
: • ted 1 r the Standard Varnish grade in these specifica- 
• here greater smoothness of finish is desired. When 
the finer grade is employed, the powder proportion of the 
t may be reduced Vy°/ { to 25*25 depending upon the dura- 
bility require 

/ Aluminum Paste: The aluminum paste shall be Alcoa 

Albron Paste, which contains a fine mesh powder similar to 

lard Lining Alcoa Albron Powder Two pounds of paste 

I vehicle shall be used for all general exterior 

For the most durable results, 2 1 •> pound 
Ion of vehicle shall be used. 

12. Vehicle — Long Oil Varnish: The vehicle for use on weath- 

thet metals, brick, concrete and plaster shall 

1 varnish, made from ester gum, cumarone- 

ther suitable resins, together with 

and shall fulfill the following requires 

^h shall be clear an I . nt. 


b. The viscosity shall be between 0.50 and 1.0 poise at 
25° C, corresponding to Tubes A to D of the Gardner-Holdt 
Air Bubble Viscometer, if it is to be used with Alcoa Albron 
Powder, or between 0.65 and 1.25 poises at 25° C, correspond- 
ing to Tubes B to E if it is to be used with Alcoa Albron Paste. 

c. It shall contain not less than 50 ( , b> weight of non- 
volatile oils and gums. 

d. It shall pass a H)' , Kaun Reduction Test as described 
in Federal Specification TT-V-81, Paragraph F-2g. 

e. When thoroughly mixed with Alcoa AM ler or 
Paste in the proportion of 2 pounds per gallon of vehicle, the 
paint shall have good leafing quality, show satisfac ti iry brush- 
ing and leveling properties and shall not break or sag when 
applied to a vertical, smooth, steel surface. 

/. The paint shall set to touch in not less than 1 hour nor 
more than 6 hours and dry hard and tough in not more than 
24 hours at a temperature of 20° C. to 30° C, except where 
it is to be used on brick, concrete or plaster, in which case, 
the paint shall set to touch in 1 to 3 hours and dry hard and 
tough in not more than 18 hours at the same temperature. 

13. Vehicle — Phenolic Resin Base Varnish: This specific at ion 
is designed to cover a long oil phenolic resin varnish oi maximum 
elasticity and durability for use in making aluminum paint for 
all exterior applications. 

a. The oil shall be entirely vegetable oil, containing not 

less than 75' , China wood oil. The volatile thinner shall he- 
free from toxic hydrocarbons such as benzol. 

b. It shall be clear and transparent. 

c. The viscosity shall be between 0.50 and 1.0 poise at 
25° C, corresponding to Tubes A to D of the Gardner-Holdt 
Air Bubble Viscometer, if it is to be used with Alcoa Albron 
Powder, or between 0.65 and 1.25 poises at 25° C, correspond- 
ing to Tubes B to E if it is to be used with Alcoa Albron Paste. 

d. The flash point shall not be below 30° C. in a dosed 
cup tester. 

e. The varnish shall contain not less than 50 ( , by weight 
of non-volatile oils and resin. 


/. It shall pass a 140' , Kauri Reduction Test, using the 
method described in Federal Specification TT-V-81, Paragraph 

. [t shall show no skinning after 48 hours in a three- 
quarters filled, tightly closed container. 

h. It shall pass the gas and draft tests as described in U. S. 
deification 52V-14a. 

/. Flow-out films on tin plate panels dried 72 hours shall 
withstand immersion in cold water for 96 hours and hot 
~ C. for 6 hours without whitening, dulling, check- 
ing, or showing other serious defect. 

Films applied to 6" x 1" test tubes by immersion in 
varnish to a depth of 4 inches and dried in an inverted position 

"2 hours shall show no whitening, dulling or visible 
attack when immersed to a depth of 2 inches in a ^ , solution 
of sodium-hvdroxide for six hours at 20° C.) and a separate 

ilar dim a 4' , solution of acetic acid for 24 hours at 
20° C). 

I When thoroughly mixed with Alcoa Albron Powder or 
Paste in the proportion of 2 pounds per gallon of vehicle, the 

at shall have good leafing quality, show satisfactory brush- 
ing and leveling properties and shall not break or sag when 
applied to a vertical, smooth, steel surface 

I Aluminum patnt made with this varnish, when applied 
metal panel and allowed to dry in a vertical position, 
shall set to touch in not more than 2 hours and dry hard and 
tough in not more than IS hours at a temperature of 2 

14, Vehicle — GlyceroUPhthalate Resin Base Varnish: This 
specification is designed to cover a glyccrol-phthalatc resin var- 
nish of maximum elasticity and durability for use in making 
aluminum paint for all exterior applications. 

a. The varnish shall consist of glyccrol-phthalatc and suit- 
able modifying agents, and properly thinned to yield a good 

b It shall be clear and transparent. 

c It shall be no darker than a solution of 0.9 gram of 
ssium-dichromatc in 100 cc of sulfuric acid, spc^ 
a the He: 


d. The viscosity shall be between 0.50 and 1.0 poise at 
IS C, corresponding to Tubes A to D oi the Gardncr-Holdt 
Air Bubble Viscometer, if it is to be used with Alcoa Albron 
Powder, or between 0.65 and 1.25 poises at 25° C, correspond- 
ing to Tubes B to E if it is to be used with Alcoa Albron Paste. 

e. The varnish shall contain not less than 4s f , b) weight 
of non-volatile matter. 

/. A flow-out tilm oi the varnish on 28 gauge tin plate, 
air dried 16 hours and then baked at 180° C. to 185° C. for 
2 hours, shall show no cracking of the film when sudden I \ 
chilled to 0° C. and quickly bent sharpl) on itself The bent 
part of the baked panel shall show satisfactory adhesion 
under a knife test. 

g. A flow-out film on colorless glass, baked for not less 
than 2 hours at 180° C. to 185° C, shall be hard, tough, 
smooth, transparent and free from all defects sue h as c hec k i 
dulling, or wrinkling when compared to a fresh film. 

h. It shall show no skinning after one week in a half- 
filled, tightly closed glass container stored in a dark place. 

/. A flow-out film on 28 gauge tin plate, air dried for 48 
hours, shall withstand immersion in cold water for Is h 
without whitening and shall show only slight dulling \ 
similar film shall withstand boiling water for 10 minutes 
without appreciable whitening or dulling diu\ shall show no 
whitening after drying for 15 minutes. After removal from 
the water for 30 minutes, the original gloss .in<\ hardness 
shall return in both instances. 

j. A flow-out film on 28 gauge tin plate, air dried 4S hours, 
shall retain its gloss and general appearance after 24 hours 
immersion in straight cut gasoline. After air drying 4 hours, 
the film shall have regained its initial hardness and toughness. 
There shall be no dissolution effect on the lower immersed 

k. When thoroughly mixed with Alcoa Albron Powder or 
Paste in the proportion of 2 pounds per gallon of vehicle, 
the paint shall have good leafing qualitv, show satisfactory 
brushing and leveling properties and shall not break or sag, 
when applied to a vertical, smooth, steel surface. 

/. Aluminum paint made with this varnish, when applied 
to a metal panel and allowed to dry in a vertical position, 


shall set in not more than 3 hours and dry hard 

and firm 

7 5. Vehicle— I I arnisb: 1 ~al use on 

r other mei 
exposure shall ng re- 

Hic varnish shall be 

b. T: -ill he between 0.50 ar. 

>rrespon^ the Gardner-Holdt 

:u of non- 
lls and £~ 

using the 
method jraph 

en thorough. 
or 1 portion of 2 poun 1 vehicle, 

brushing ami and shall nor 

more than 2 b 

I a temper- 

Vehicle— 1 




. S - 

e. When thoroughly mixed with Alcoa Albron Powder or 
Paste in the proportion of 2 pounds per gallon of vehicle, 
the paint shall have good leafing quality, show satisfactory 
brushing and leveling properties and shall not break or sag 
when applied to a vertical, smooth, wood surface. 

/. The -paint shall set to touch in nor less than 3 hours nor 
more than 8 hours and dry hard in not more than 24 hours 
at a temperature of 20° C. to 30° C. 

17. For Wood Not Exposed to It eather: The vehicle for alumi- 
num paint described in Paragraphs 12 or 15 may be used. 

18. Vehicle— For High Temperature Work: Requirements for 
this type of vehicle shall be largely performance requirements, 
the composition being left entirely to the manufacturer, but 
fulfilling the following specification: 

a. The vehicle shall contain not less than 20^5 non- 
volatile matter. 

b. The viscosity shall be not greater than 
corresponding to Tube A of the Gardner-Holdt Air bubble 
\ iscometer. 

c. When thoroughly mixed with Alcoa Albron I 1 ' 

or Paste in the proportion of 1>A pounds per gallon of vehicle, 
the paint shall have good color and show satisfactor) adher- 
ence to a smooth 26 gauge black iron panel and shall not crack 
nor peel when the panel is bent over a J^-inch rod through an 
angle of 180°, after 10 hours heating of the panel at 500° C. 

19. Vehicles— Miscellaneous: Other meritorious vehicles such 
as bituminous and asphalt base varnishes, pyroxylin lac 
etc., have not been included in these specifications because of 
the proprietory nature of their formulas. The valuable properties 
of such vehicles make them particularly well adapted tor many 
special services where the varnish type ^i vehicle is not suitable. 



:---: OFFICES 



CH LL.. 




::inal Bu:i 
1 1 Dunn K