PROTECTIVE COATINGS FOR STRUCTURAL STEEL Second Progress Report

PROTECTIVE COATINGS FOR STRUCTURAL STEEL
Second Progress Report
A. J. Permoda.
R. L. Snider
Research Laboratory Division
Office of Testing and Research
Report No. 361
· Research Project 49 G-50
Michigan State Highway Department
John C. Mackie, Commissioner
Lansing, August 1961
PROTECTIVE COATINGS FOR STRUCTURAL STEEL
This progress report describes the performance, in accelerated
laboratory tests, of a number of specification and proprietary structural
steel primers and coatings. These materials were received for evaluation by the Resllarch Laboratory Division from 1956 through early 1960.
A previous and initial test series was .conducted as part of the same
Research Project49 G-50, and reported in July 1956, in Research Report
No. 260.
Primers and coatings received early in this four-year period were
evaluated in 30 primer-topcoat systems as Series 2 in 1958, and those
received later were tested as 42 additional systems in 1960 in Series 3.
In addition to primers and coatings received after the Series 2 tests
began, the Series 3 tests included colored, non-aluminum topcoats especially evaluated as possible finish paints then being considered for the
Houghton-Hancock bridge, and ten systems being field performancetested on steel girders of two bridges on M 7 8 relocation in Shiawassee
County. The M 7 8 field tests are to be reported as Research Project
49 G-50(4).
Laboratory Test Procedure
Tested primers and coatings were applied on steel panels and evaluated in laboratory equipment as two-coat systems of a primer and a topcoat.
The evaluated coatings were applied on duplicate 3- by 5-in. panels,
cut from flat, 20-gage, hot-rolled steel sheeting. The hot-rolled grade
was selected because bridge structural steel and hand railings are of this
particular type. After occasional rust spots were removed with abrasive
paper, the test panels were degreased in a trichloroethylene vapor bath
prior to application of primers. All paints were applied by brushing,
the method of application used in maintenance coating of Department
bridges .. After a suitable period of at least six days for drying of primers, the panels were topcoated and allowed to dry in the laboratory for
a period of about three weeks, before testing.
After drying, the better panel of each set of two was selected for
testing, while the other was set aside to serve as a control for comparison purposes at end of weathering tests, and the selected test panel
received a vertical scratch through the coating to the metal. A complete
test cycle consisted of 200 hours exposure in the Weather-Ometer,
fc:>llowed by 50 hours exposure in a salt-spray and humidity cabinet. The
coated panels of each series were exposed to seven such cycles for a
total exposure of 1400 hours of Weather-Ometer and. 350 hours in the
salt-spray and humidity cabinet.
At the conclusion of the laboratory tests, panels for the coating
systems listed in Tables 1 and 2 were photographed beside their respective control panels to show the amounts of degradation during the test
exposures (Figs. 1 and 2).
Performance Ratings
To assign numerical values to the conditions of coating systems after
laboratory exposure, two observers, S. M. Cardone and A. J. Permoda,
rated the panels for three factors : 1) topcoat. appearance as to fading,
chalking, and gloss change; 2) amount· of coating breakdown on panel
face; and 3) extent of rusting and rust creepage at the vertical scratch.
Each factor was rated numerically on basis of 10 to 0 scale, with 10
denoting perfect condition, decreasing to 0, denoting complete failure.
For convenience, these three ratings were added into a single total
value indicating the overall merit of the coating system, with the highest
total representing the most satisfa<;tory system. These totals are tabulated in Tables 1 and 2, as are the three individual factor ratings, the
relative ranks of the paint systems, and sources of proprietary coatings.
Test Results: Series 2
The coatings systems listed in Table 1 and shown in Fig. 1 may be
ranked by performance quality in the following order, starting with the
best system:
1. MSHD 1A red lead primer and proprietary silicone-alkyd aluminum topcoat (System 8--26 points).
2. MSHD lCred leadprimerand MSHD 5Baluminumtopcoat(System
points).
9-~25
-2-
3. MSHD 1A red lead primer and MSHD 5B aluminum topcoat--the ·
Departmental standard (System 1--24.5 points).
3. MSHD 1A red lead primer and proprietary leaded aluminum gray
topcoat (System 29--24. 5 points) .
. 4. Proprietary alkyd-linseed oil red-brown primer and proprietary
silicone-alkyd gray enamel topcoat (System 13--23 points).
5. MSHD 1A red lead primer and proprietary chlorinated-rubber
green topcoat (System 7--21. 5 points).
6. Proprietary basic lead silico.chromate orange primer and proprietary basic lead silicochromate green topcoat (System 27--21 points).
7. MSHD 1A red lead primer and proprietary basic lead silico chromate green topcoat '(System 6--20.5 points).
8. Proprietary epoxy-ester red-brown primer and proprietary
epoxy-ester gray topcoat (System 14--20 points).
8. Proprietary urethane brown primer and proprietary urethane
green topcoat (System 19--20 points).
8. Proprietary zinc-rich gray priiner and proprietary gray topcoat
(System 26--20 points).
Nineteen other systems ranked lower, earning less than 20 points.
These included neoprene,. thiokol, rubber, epoxy-ester, and two-component epoxy primed systems.
The four best-rated systems were red lead-primed with aluminum
topcoats. By contrast, five other systems (Systems 2, 3, 4, 5, '10) also
red lead-primed but with topcoats based on non-aluminum pigments and
oil vehicles obtained poor ratings, largely because of po\)r appearance
and scratch rusting. ·Four other systems (Systems 6, 7, 19, 27) with
proprietary non-aluminum topcoats based on chalk-resisting pigments
and improved vehicles, earned good ratings.
Test Results: Series 3
The coatings systems listed in Table 2 and shown in Fig. 2 may be
ranked by performance quality in the following order, starting with the
best system:
-3-
1.. MSHD 1C red lead primer and proprietary silicone-alkyd aluminum topcoat (System 9--26 points).
1. Proprietary zinc-rich gray primer and MSHD 5B aluminum topcoat (System 36--26 points).
2. Proprietary basic l~Jad silico chromate orange and proprietary
basic lead silico chromate gray (System 14--25.5 points).
3. MSHD 1A. red lead primer and MSHD 5B aluminum topcoat, the
Department's standard (System 1--25 points).
3. MSHD 1C red lead primer andMSHD5B aluminum topcoat (System
6--25 points).
3. Proprietary zinc-rich gray primer and MSHD 5B aluminum topcoat (System 33-25 points).
4. Proprietary epoxy red chromate pigment primer and proprietary
epoxy gray topcoat, both two-component (System 31--24.5 points).
4. Proprietary zinc -rich two-component gray primer and proprietary
vinyl gray topcoat (System 34--24.5 points).
4. Proprietary zinc-rich gray primer and proprietary gray topcoat
(System 35--24.5 points).
Performance ratings for Series 3 were somewhat higher than for
Series 2, because these systems were especially selected for quality.
Following the nine best systems, the "good" and ''fair" systems rated
from 24 to 17 points, a higher general level than in the earlier series.
Among the "poor" systems were :
1. Proprietary metal black primer with bituminous vehicle and proprietary aluminum topcoat, at normal film thickness (System 15--0 points).
2. Proprietary tar emulsion primer and MSHD 5B aluminum topcoat, at normal film thickness (System 21--11 points).
3.
Proprietary brown and black furan topcoat (System37--0 points).
-4-
Five of the six best-rated systems were topcoated with aluminum
paint. Some topcoats, also applied over red lead primers, but based on
non-aluminum pigments and oil vehicles, performed poorly (Green:_
System 2; Gray: Systems 3, 11). Others did well, notably proprietary
non-aluminum topcoats based on chalk resisting pigments and improved
vehicles (Green: Systems 8, 13, 42; Gray: 5, 14, 31, 34, 35, 41).
Series 3 systems undergoing field testing on -steel girders of two
bridges on M 7 8 in Shiawassee County tested well in the laboratory, all
receiving scores in the range of 26 to 22 points. The MSHD standard
system of 1A primer and 5B aluminum topcoat rated 25 points. The ten
systems involved are denoted in Table 2 by parenthesized system numbers.
Test ratings for many systems exposed in both Series 2 and 3 were
similar, indicating good duplication of test results. The MSHD standard system of 1A primer and 5B aluminum topcoat received 24. 5 points
as System 1 in Series 2, and 25 points as System 1 in Series 3. MSHD
1C primer plus 5B topcoat had identical ratings of 25 points in both
series. Systems with topcoats based on non -aluminum pigments, however,
gave less reproducible results.
Conclusions
1. On structural steel, performance of the Department's current
system of 1A(1) red lead primer and 5B aluminum topcoat was equalled
by very few of the tested paint systems, and surpassed significantly by
none. This primer has other advantages in being one-package and easy
to prepare, having long pot life, and being easy to apply. This is less
consistently true of other systems evaluated in these tests, i. e. ; epoxies
and urethanes.
2. Zinc-rich, cold-galvanizing primers evaluated in the tests earned
very good ratings and appear to have potential as superior primers. The
tests indicated that specially designed topcoats are required with these
primers, which_need sandblasting on hot-rolled steel to provide protection cathodically.
3. Few colored topcoats had ratings equivalent to 5B Aluminum.
Ratings of the good colored topcoats seemed to depend more on being
matched with particularly compatible primers than does 5B aluminum.
-5-
Recommendations
1. · On the basis of performance in these laboratory tests, the Department should continue its current specification of lA(l) primer and 5B
topcoat on bridge structural steel.
2. Performance evaluation of coatings under field test on two bridges
on the Jill 78-relocation inShiawassee County should continue, and results
subsequently be compared with laboratory performance. The field test
results should have greater weight in dictating paint specification revisions.
-6-
2
3
4
5
6
7
8
9
10
II
12
13
14
15
17
18
19
20
21
22
23
24
25
26
27
28
29
30
/-
1
I
I
I
I
I
I
I
I
I
'
/-
1
lo
I wtll
l~_j
l:cW
I!;(~
Is:
lwa.
I
-.;]
16
Figure 1. Series 2 panels with unexposed control panel above in each pair,
and test-weathered panel with vertical scratch below
(identification and performance ratings in Table 1).
Figure 2.
Series 3 panels with unexposed control panel above in each pair,
and test-weathered panel with vertical scratch below
(identification and performance ratings in Table 2).
TABLE 1
IDENTIFICATION AND PERFORMANCE OF TEST COATING SYSTEMS(!)
Series 2 Coatings (Received 1956-1958)
Test
~'ystcm
Drying
ldentifica~ion
Composition
Tim~.
hr
~'ystem
-/-rruckness
-'PI"'><mils
anct'
I;
Ratings••
Face
Rusting
JScratc~ I
Rusting
Total
Rank
Remarks
.
.
Primt•r: 57 PR-7:l
Topcoat: 57 PR-151
MSHD ~o. lA rt!d lead
MSHD No. 58 aluminum with .-\\'-:1 vl•hicle
Primer: 57- PR-7:r
!'.tsHO No. 1:\ red lead
'-!SHU No. a gray
Topcoat:
;,~
PR-110
Primer: .:.7 PR-73
;:;!'\ PR-Iu,-,
,,
PR-<:~
...
7 5
9.0
•••
::!4.5
'
:l. 6
.'i.5
'·0
4. 0
17 5
12
:1.6
:1.0
9.0
5.0
17.0
1:1
:w
:!, 9
;;,o
9.
;) (J
l!LU
9
4'
:uJ
a.o
!<_:;
5.0
1"-"
10
:u;
1;.:;
~~-
0
:) 0
~0.
5
7
T?pcoat from National Lead
Laboratories, Brooklyn
:1.
;j
~-ii
9.0
'-"
21. 5
5
Topcoat from Valdura Division
of American-Marietta Co. ,
Chicago
t. 7
!.'1.0
\L5
... :;
26.0
1
Topcoat from Dow-Corning
Corp., 'Midland
9.0
,.0
25.0
2
-!~">
4'
:w
MSHD No. IA red lt•ad
4•
Topcuat: ,:, ... PR-14::1
=--LL
Pnm!.'r· 57 PR-7:1
Topt•oat · 57 PR-1 :;o
MSlHl ~"- lA red lt•ad
Laboratory mudif.it·d ~"- ·lA Kn"t·n
Prtrnt·r: 57 PH.-7:1
Topcoat: 5(i PR-l·Hi
~LL ~t-·.-,o ~rt·t.m
;I()
~tsHIJ i'i~•-
,,
~~-.-.u
~ISHU
Primer: ;ii PR-7:1
Topcoat· :; .. PR-IO:m
I
5
--~~
MSUD ~"- lA rt.>d lead
Labora«·~- mU:..tified No. :lA gray
Topc~•at:
Prirnt:r· 57
4'
1•
g-ray
:w
,,
r-.;,,. l A n-d It• ad
IA n.•d il•3d
\'al-Cht:m ~u. tiii6 Krt-en \nth t•hlormat.od
rubbt..•r Vl•hicle
1<
:\tsHJl ~o. 1.-\ red lead
XP-7 -1\t~:! alummum with silicune alkyd vehicle
4<
~
(I"
I
Pr1mer: :-.; PR-7:~
Top:.·ont: 5~ PR-lol-
(prt•mixt.'lil
'
Primt•r: .i::-! PR-1/H
Topcoat: .37 PR-151
lP
Primer: 5" PR-lU4
Topo::uat: .:;~ PR-lll::i
11
12
13
M,..;;HD So. lC red lead
MSHD No. :;a aluminum
·
Primer: 5~ PR-94
Topcoat: 5!:1 PR-9;)
Primer: 5tl PR-9-t
Topcoat: 5~ PR-103
5~
PR-76
Topcoat': 58
PR-~0
Primer:
·~nth
"
"
"
AV -:1 n•h.tdc
15
16
4'
ao
3.6
2. 0
9.·0
;),0
16.0
14
LL\ So. :.!tiH red lead
UA (Gliddt..'ft &.tft-l9) light gray
"
4.0
:::. 5
!-1.0
4.0
14.S
16
2.2
6.0
4.0
3.5
13.5
17
3.1
5.0
9.0
9.~
23.0
4
.3.5
4.0
•••
7.0
20.0
'
'-2
3.0
1.5
1.0
5.5..
20
2.2
2.0
0.5
1.0
3.5
22
UA So.
. LlA No.
~614
~615
.."
30
red lead
aluminum
RLtst resistant red-brown with al-kyd-linseed oil
30
Gray enamel with silicone alkyd \'ebicle
24"'
Priruer: 58 PR-7-'!!
Topcoat: 51'1 PR-79
.Rw.."t iolaibitive red-browD with epoxy-ester vehicle
Gray ecame-1 !llri.th epoJ~.Y-e.ster ...-eb:icle
24
24
Primer: 58 PR-IOlA
5~ PR-lQlC
No. 101-damp-proof red-bl"'WD
No. 60-6 silver-gray
24
T~:rt:
Primer: 5S PR-SIA
Topcoat: 5tl PR-S2D
No. CP-1 bl"QW'Illead With~ vehicle
No. CN -14 gray with neoprene vebie1e
24
...
24
Pear bnlrah3bility
.lbU.Uigs Oft~ or l-6
'··
MSHD So. IC red lead
Lab:.~r.U.ory mr)(ilfied N-o. :lA gray
..,-efticle
H
2. 7
w o.
with 10 deaot.iDg
AI;J
~
aad .g
~
fai.bare.
Standard MSHD system
Topcoat from !\ational Lead
Laboratories, Brooklyn
Both coats from Lead Industries
AssoeiatioD, N.Y., N.Y.
Both coats .from Lead Industries
Association, N.Y., N. Y:
Both .coats from BobeeoD Preservo
Co., Port Huron
Both eoats from Robeson Preservo
Co .• Port Huron
Bc:d:h coats from bst-8ele Co. ,
Cl<mohmd
Both eoats Cbarc:oCe from
Charleston .Rubber Co. ,
CharlestDD, s.-c.
(1• Cycle coesis&N of l-iDO Ju- eyd.ic-al c~ in w~~r-Ome~ 'C9 mm •-ak·r spray
pe-r 60 miD ~1. aJid :WO hr t•.-n.- ln ,..;dt lqWa}' ad bollillidity =biAcl at 9.:;. 1-' •
TABLE 1 (Con't)
IDENTIFICATION AND PERFORMANCE OF TEST COATING SYSTEMS
Series 2 CoatiJJgs (Received 1956-1958)
....
-I
n-;.-
i
IDeymg
~m
nlm!'_
I""
~It:
:;;,- PR.--11.~
~>·-
m---21r
~.c
T•lpi'on~.·
,.
~
C0~.11:1
5l:!-
Jhmnl:~ """' I?Bl--9~
CP-Il &t!0\ml fuadl ~ ne0~~
<CN-Il:s. g,weeDl wi!mhi nea~ ~elti'c.!Je.
l:";dJ-Cfumll
r-
z~
:!:..t•
~ 66UJbtru~wm~ ~ "~::el'lilc'le·
:::;,-
!?Bi.-'"111~·
l<;cll-<C'fu::mt 5&.. Gli2: g,r.L}' wl!tlii umet:fume. ~le(ltww-<tOmpviiE'DI:!:tl
E''rimer :..- Il"R:-3<-
119'
\.-a:Il-(L-nem ~J·.. 6~1), 1~"'-rn wi.tll1 mretfume· ~
:11- l?B1-nK1o>
~aJJ-<lbmll :~W.._ flfi~ jO)'t!'ere
wiltb u::It'etllane- 'il:eb:idl~·
--· -
IJltNimg;
"""'
I!"""'""'; I
, Rm.stittg
.2:.11
3:.~
•-•
•-•
4.5
21
BoCb. eoats Cba:reote from
Charleston Rubber Co••
Charlesl:oD~ S... C.
~QI
.;_@1
tj;_(]IJ
a._ a.
:nfU:Jl
n
Both. eoats from Valdara Divisioa
of Americ:m-Marietta Co...
Chicago
:!'.. 7
.;;,01
8-.. 0:
~UJ:
2£1,_0:
t:.6i
·lL$
• .. e:
!!:!'
I!:!'
.........
T.W
·~
~~)-{t<·,mplliatrllt}•
1J·•~~.~>(dl:
arme
][;!:
!,rt'W:<,.-t!Gmpanrtn:!tjJ
1[~-...!lllt
-- I
•
Both coats from. Valdura Division
of Amerie:an-llrfarietta Co••
Chicago
lbno-<t~atrnttl'
WID.inm tt- ~ Pnl.-iJ-JS,
TGp<:mttt.: :il'- J?m-Illl':!...~
:!1:••
~-::d!--€1'1Jtml :-;.~'- 6901 bnowrn wLtllt eplil~-eSI!etr \:~fe.
]j;!'
lr;Mi-(!.'futmJ ~.,,_
n~
f>s,;
~ wi:tllt L~rilmie<Jl-whlle•Ir
..
ll'ltfuillk:·
....•
0
•
"'
.,..
!Ptrum:IT: ;);;: I?BHHl.-;,
'l\"a!ll-<l~Ill\ 50c 691.·1' tl:~ru~wrn w~llfu 1."1~"'-'!¥-t..""Stlt.""l!"
lfnR«roa.fL:· :;,...,
~3Jl-€ll;t~ml ~'-· 6;'>(), g.Ir~:er.l
IPUl~ll•lr!W,
w:iltlfu
v:&.ru!:lle
~tfr!lmriml:!!4>tdJ-rull!i~L'll"
·-·
13.&
••
l?'rt:m:t!:w:: :),-l!'m-IJ.IJt>>
Sllclllll!fuJ..
1.-1.-:mm wdl IM-.tdl wEt:liJ tel!l"'~ -~·
v:tdlW.llic (\tW0M::GmpOn"entL)i
1£~:>peua£.:· ~ i!'BHI~
:,!3,
F'l:ri:mL"lt":
~
Pm-llfill:"
JJEilliiill ~'-- 5:B1 -..fumigmm wiJt!l!;
~W-;j:
'"elti:dJr·
Sleilll !S0c. .u-:-.mn Iredl Ieacli witt!ll: epe~-'~'ersamhll
\t'eiW:dk(~:
1i"opc:oott;: 5ii:' Pfit~·Il
:!.'~;
P'lli'me2r::: aN- Fm-llilZ
Vopeoatt:·
5~ ~lliJ~
eBiii}l NG\.. 5B\ afnmiW•m
Il"RRi:"
SOJ__
wiil!fu
.<\.~-31 ~
.ro:x tt:l.lll wfdtl t!lli:olmll '011."-llmie·
V~m1!'!io!.- ii5~p:t.ywiit1hl <!:!'dO~lev
.;_@I
!7.• £
Z-5
l!UJl
]5
Both coats from. Valdllra DirisioD
of American-Marietta Co••
Chicago
3'-• .,1\
"Ld\1
rl'·.S
3_.01
:ns-.5i
••
Primer from Shell Chemical
Corp. of N.J.
~!'<-
'L@'
~-s;
2'-0
l'LS
u
]_!i;<"'
£.:);
.._.
2:,.01
.._,
U.Ol
19
PJimer from PJmd._ Res. Corp•• Det. ;
Topcoat from Valdura Div. of Amer.- Jl'arietta Co. • Chicago
.._.,
3...0'•
I!!>.QI
]'l.5
l2
Bolh .eosts from Saboi. me•• Toledo
Si.Oi
3.0~
&.Ol
!i'.(}l
20Ul
•
J,.8>
6·.5'
~0,
~.5
ZLO
•
l~
nz:
,.
.
u
~.5J!!I':PBH!ll3~
"Iropconlll:·
21>
~
~
l?m-!l113Bl
11:!'"
58"E'Rl.-EE.4l
~Nil>•. Sfl~~glm-Y
;lijl
SilO&..' SoL. 5i l1igJtt. ~
3ll'
G'ai"::mooo.: ziile:--pfg;menti. ~- ~ clill::lriJ:I;ate(t-
'"
~v:eiiiclle
~
5ti»~ No;. ;),
~
NIU1..~61~
3&
N1IJL 3£~5'(Jl peero
"''
ss;~..;.;
"Iro~$~-n;i
~
291
~: ~JI?RH_4-!I.!\.
30!
I!igfttt gll'ay
u
P'HI!: l'llb>... -10& fmm;m
~ ~-MBJ
li"BB[:'
P'l!Iirmer.::
;rr; ~
MSfiEI .... u, ted! Ieadl
Silllafu.."{; N"o.'. 50'8"· gun:metat pay
P'.rimetr:
110pcoa~:
~
Pll-'£491
f3 I?R-115UI
n ahon2ml'}-, funnufufedi
..
"-•
"-'
't.$
"'-Z
'LG.•
9!.01
:l\1'
:u
5-_@i
u
1Si01.. -109' g.n:y;
1!0peoaitt:·
11opeoam.:. 5Bi m~
~
zfue chromate o'llLve
li.aJJo~ey- ~NO'~ -fA- green-
Jo:
30't
.. POO!rtWo:shbiill!¥
,..,.. ~on! S¢ai1e Gil"
·-·
30,
"IrQplto!lll!t: ~ !?R--lt!l3S\
:001 ~Oil" wd lto• dene~ tmJ detem:0.ra:ti:on rondl 0-' co.mpl'ete !a!iill.nre·~
from Shell Cflemical Corp.
of N.J.
_Primer
ueiliidC:
s,
Chicago
Z.QI
]:!:
...:eltudJr·
,
Both coats from vaidw:a Division
of AmerieaD-M.arietta Co••
·-·
6i.$
·-·
7.()
ll'LS·
l2
2-£..5'
,
lS.S
1.
Bot& coats from Sabox Inc•• Toledo
lklth eoats from. NatioDal lead
Labor.dDries. -
BoE& coats from PrDdacts Research
Corp. • DetJ:oit
Tq:coat:. from Silbox Jac., Toledo
TABLE2
IIJilDli'Il!F'lATIDJ!tlf AI!ID P~CE OF TEST COATING StSfE.MS(l)
S'eries :I: ~ (Reeeiived 1958-1960)
-
II-"" . 11--.-r=·- ~.::.:..11;;:,;; I ,_ ! I
lhtimm::
'lrOpz:u:att:
em J!JB...62
"'
l!'r:iiDelr::
6[1) ~
~: SiBeJH...&IJ$
"liiSIIIIll'lin. 11& J!8dl teadi
M&lllllllih. 4!A\peem
3l
ID!iimm:: ti[I)JNB-62!
1lbpmatl::: m:€1H-8JJS3
JiiSBD1 NW.. 1lA\ md!.lliadl
JIISIID)J'Rn_ a.w.~-
(II))
.
$
..."
II
611) Rm-llllZ!
li5IBJ) IRn. li& ll8dl Jeadl
MSIID.ll'Rll.. 5maD•mjnnnn 'Wfiftt&.W-3l ~
~:61D~
MSIUJ) l'lih.
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TABLE 2 (Gon't)
IDENTIFICATION AND PERFORMANCE OF TEST COATING SYSTEMS
Series 3 Coatings (Received 1958-1960)
Test
System
Identification
Compos1tion
Drying
Syt>t.cm
Time. ThH'knt'SS,
nul.s
he
Ratings••
Appcar-1.
Face
I
Scratch
Rusting
I
Remarks
Rank
,tnt·o:
Ru8ting
Total
1.5
0.0
0.0
0.0
., .,
6.5
8.0
6. 5
21.
:l. 5
8. 5
8.5
3. 2
6. 5
2.0
--
15
16
Primer:
Topcoat:
5t~
5~
PR-1S7A
PR-1S7B
Zm.:o mt•tal black with bituminous vehicle
Zonl• :tluminum
Pnmt•r· 5:-. PR-190
Gah·Jnoh•um :So. 122ti aluminum-gray with zinc
dust (twu-t·omponent)
Tu}.X-·oat·
5t~
PR-190
Gah·inolvum ;\o. 12:!6 aluminum-gray with zinc
dust ttw(J-component)
19
6
11
6 5
23.5
6
Both coats from J. Dixon Co., Jersey
City, N.J.
8.5
6.0
21. 0
11
Both coats from J. Dixon Co., Jersey
City, N.J.
6.0
6. 0
5.5
17. 5
16
Both coats from J. Dixon Co. , Jersey
City, N.J.
2.3
6.0
5.0
7 ..'5
IS 5
14
Both coats from A. C. Born Co.,
Long Island City, N .. Y.
2 4
'-0
1.0
2.0
11.0
18
Primer frbm Jennite Products
Detroit
3. 5
6.5
Hl.O
15
Primer from Jennite Products Inc.,
Detroit
Primer from Eagle-Picher Co. ,
Cincinnati·
"
Texas
Both coats from"RliSt-0-Leum Corp.
Evanston, ill.
Dixon:-;(), llll red lead-graphite brown
Topcoat: 5S PR-1%8
D1wn :->tJ. 1119 bright aluminum with g:raphite
11'1
Prim(•r: ::;~ PH-l~:i.A
Topcoat· .J1:i PR-1%C
Dixon
D1xun
Prim~r:
Topcoat: 5 .. PR-l9SD
Dixon So. 101 red lcad-graphtte broi'."TJ
Dixon :\o. 119 sage green
"
"
Primer: 39 PR-5
Topcoat: 51-1 PR-:.!01
Born
Burn
1<
:.!1
Primer· 59 PR-7
Topcoat: 60 PR-112
J.ennltl' 1\o. J-IG tar-emulsion black
!o.ISHD ~u. SB aluminum with AV-3 vehicle
22
Primer: .J9 PR-"
Topcoat: 60 PR-112
Everwear 1\o. J-43-B pitch'-base black
:\ISHD No. SB aluminum with AV-:l vehicle
""
"18
Primer: 60 PR-2
Topcoat: HO PR-112
No. E-:{-776 maintenance brown
MSHD !'\o. 58 aluminum with A\'-;{ \"Chicle
24
18
1.9
8. 5
8. 0
4.5
21. 0
11
24
Primer: 60 PR-64
Topcoat: 60 PR-111
NLL maintenance orange
MSHD No. 58 aluminum with AV-3 vehicle
24
18
2. 0
8.5
9.0
4.5
22.0
9
Primer from National Lead Laboratories,
Brooklyn
(25}
Primer: 60 PH-59
Topcoat: 60 PR-ll2
PPG XLO-FLO brown lead
.1\.tsHD No. 58 aluminum with AV-3 vehicle
"18
2.4
8.5
9.0
6. 0
23.5
6
Primer from Pittsburgh Plate Glass Co.
Pittsburgh
{26)
Primer: f;Q PR-ti5
Topcoat: 60 PR-112
Glidden No. 26H special-wetting n:d lead
MSHD No. 58 aluminum with-AV-3
"
2.0
8. 5
8. 5
7.0
24.0
5
Primer from Glidden Co. , Cleveland
{27)
Primer: 60 PR-67
Topcoat: 60 PR-112
SSPC paint 3-5·5T No. a brown
M.SHD No. GB aluminum with AV-3 vehicle
""
2.0
8. 5
8. 5
6.0
23.0
7
Primer from Steel Structures Painting
Council, Pittsburgh
(U)
Primer: 60 PR-68
Topcoat: 60 PR-112
Calif. No. 52G51 zinc chromate yellow-green
MSHD No. 58 aluminum with AV-3 vehicle
18
18
2.0
8.5
8.5
5.5
22.5
8
Primer based on Calif.·. specifications
l':i
"
"'
"
"
Both coats from Zone Co., Ft. Worth,
0.0
,,
17
....I
""
::o
I
23
..)
Pnmcr
;:;~ PH-l~JA
,;~ PR-1~SA
Poor brushability
Ratings on scalt• of 10
to
~o.
~u.
101 red lead-graphite brown
Hl:.!.cxtro light gray
G:~.h·inide
Hu~th:lar
0. With lO
mt•tal gray
rust-inhibitive gray
<il-nvtin~
,,
:JO
30
"
nu dt'tl•tiur:ltion and U ~·umpl{·t~· failun·.
1.5
'· 0
Inc.,
TABLE 2 (Con't)
IDENTIFICATION AND PERFORMANCE OF TEST COATING SYSTEMS
Series 3 Coatings (Received 1958-1960)
Test
System
(:!!.l)
:w
:n
Identification
Compu:;itiun
Sp;t.•.:m
Tim<.',
Thu:·kness,
he
mds
12
1. Ei
'·
., :l
Priml'r: j)Q PH-tili
Topl·oat: liO PR-112
Calif. ;o.;o. T3:!G-l:! Epon red k:td (two-component)
l\tsllD :\o ..-JR aluminum w1th AV -:l \·ehJch.·
1'
Prinwr· 1;(1 PH-77
Topcoat· E;() PR-7'"'
Bak!.'r :-;u, 1:!-B--I"i n·d lead
BakL•r :\o. 11-A-G alummum (premixed)
12.
12
Primt•r·
!\u Pon Cok Typt: :t
1:!'
S~ PH-1-'i~
L'f)O.\}'
l'"<·d ehrom:tte (two-
(:!2)
:;:;
.....
,-)~
PnnK•r: liO
:J
PR-1 »~1
:\u Pun Cutt; TypL'
PH-~
Sp<.:vdn.•x Su. !{P, 1107
cpux;.· gTa.\· (twn-{·umponL'ntl
L'pox~·-c·.-ter
12
Topcoat: \iO PH-112
:..tS!lD ;-;u. :111 alummum with AY-:l n·hiL'k
,,
!'rimer: tiO PH-f!l
Chem-Zim: No. RB 1119 zinL' "ray
!\.ISHD So. :iB :tluminum with A\'-:! \'t.'hitk
Primer: ;i9 PH-192
Topcoat: 60 PH-11A
Carbo-Zinc ~o. 11 zinc-gray (two-eompont."ntl
Carbo :\u. l~:JO vinyl gray
Primer: GO PR-H
Topco:tt: =-,~ PR-u:.m
G:1lnmux !..inc--pigment
Suhox :\u. -'">light gn1y
Primer: 130 PR-7ti
Topcoat: GO PR-112
Zim:utl" zin(·-pigmcnt aquco~;; himk•r gr:1y
(two-component)
~1SHD :\o . .'">B aluminum with AV-:J vehick
Primer: GO PR-a
Topcoat: 60 PR-H
Permaspray BB brown
Permaspray furan bi:J.ck (two-component)
"
Primer: 57 PR-77A
Topcoat: 57 PR-77C
NLL M-50 baking orang<·
NLL ~1-~0 baking grt·cn
39
Primer: GO PR-72
Topcoat: 60 PR-112
40
\;HI
"'
1:!.-))
36
:J7
41
42
ancc
Face
Rusting
I Sci-atch 1
Rank
Remarks
Rusting
Total
~."
5.0
22.0
9
Primer based on Calif. specifications
..... u
9.0
7.0
24.0
5
Both coats from H. E. Baker Painting
Co. , Northville, Mich.
,-,
9.0
8. 0
24.5
4
Both coats from Glidden Co. , Cleveland
9.0
ti.5
.').
23.0
5
9.0
25. 0
3
Primer from Truscon Laboratories,
Detroit
1:!'
orang"L'
Topcoat: t.iO PR-11~
I
Appear-~
4.
l'Uill!J'lnl'!lt)
Topcoat:
Raticgsu
Drying
,,
,,
;)
ti.
Primer from Truscon Laboratories,
Detroit
;).
li.5
9.0
9.0
24.5
4
Both coats from Carboline Co. , St. Louis,
Mo.
'·
H.
9. 0
9.0
24 5
4
Both coats from Subox, Inc., HlJ.ekensack,
N.J.
.
5.
7. 0
9. 0
10.0
26.0
-.2
0.0
0.0
0.0
0.0
19
D'>"en,-dry•
0\"en-dry•
' 7
8.0
8.0
7.0
23.0
7
Both coats from National Lead Laboratories,
Brooklyn
Fed. Spec. TT-P-1:16a, Type 2 brown
MSHD No. 5B aluminum with AV-J \·ehicle
30
18
2. 5
8. ii
9.0
6.5
24.0
5
Primer from Acme Q.lality Paints, Detroit
Primer: 60 PR-73
Topcoat: 60 PR-112
Fast Dry zinc·chromate red lead-brOwn
MSHD No. 5B aluminum with.AV-J vehicle
18
1.6
':l. 5
7. 0
6.0
21. 5
10
Primer from Acme QJ.ality Paints, Detroit
Primer: 57 PR-76
Topcoat: 59 PR-185
SUbox L-47 epoxy brown (two-component)
Kil-Rust epoxy gray {two-component)
12
3.3
7.5
8. 0
7.0
22.5
8
Primer: 60 PR-77
Topcoat: 57 PR-150
Baker No. 13-R-48 red lead
Laboratory modified No. 4A green
12
2.3
7. 0
8.5
7.0
22.5
8
Poor brushahility
Ratinf);s on scale o! 10 to
fl.
~ra~·
12'
1>
:HJ
"
,,
,.
1'
1H
18
30
with 10 oknnting: nu dl'll·rioration and ll (."ompkll- lailut·t·.
Primer from Amercoat Co. , Evanston,
Ill.
Both coats from Leonetti Enterprises,
H01.~ston, Texas
Primer from Subox Inc. , Hackensack, N.J.
Topcoat from Kish Industries, Lansing, Mich.
Primer from H. E. Baker Painting Co.,
Northville, Mich.