1、 . . . . . -. -._.- . “._ IO DECEMBER 1967 XIL,-RII(ASG) . - Superseding 25 July 1963 - . . I . _ “- . . , MILITARY SPECIFICATION COATING COMPOUND, METAL PRE?TREATMENT, PESIN-ACID “his specification has been approved by the Department of the Air Force and by the Naval Ai.r Systems Command, I., SCOPE
2、 l.1 This specification covers one type and grade of pretreatment coating for use on clean metal surfaces of all types as a treatment prior to application of the coating system. The amooth finish spray-type coating may also be applied by brush- ing, roller coating, or swabbing. 2. APPLICABLE DOCUMEN
3、TS 2.1 The following documents, of the issue in effect on date of invitation for bids or request for proposal, form a pat of this specification to the extent speci- fied herein: SPECIFICATION8 Federal 0-0-670 QQ-A-250/5 RR-S-00366 !“-B-846 TT-1-735 TI“L-32 PPP-E-56G PPP-B-636 PPP-C-96 FPP-P-704 , -
4、Militarv Orthophosphoric (Phosphoric) Acid, Technical Aluminum Alloy Alclad 2024, Plate and Sheet Sieve, Test Butyl Alcohol: Normal (Butanol) (for Use in Isopropyl Alco$ol Lacquer, Cellulose Nitrate, Gloss, for Aircraft Use Boxes, Folding, Paperboard Box, Fiberboard Can, Metd, 28 Gage and Lighter Pa
5、ils: Shipping, Steel (1 througn 12 Gallon) Organic Coatings ) . . -“ -. _._.“_ _.I -.- . . . .“-.-.I. . . , ., . I . . . . . I ., .“.“. -. j - . . . . -._._ ,. . . “. . , . -“+“.“. . L . . . . . . -. I . . . . . - . -1 . . 1 . . . . . .-.- . . . . . . . . . . . , . . . 1 -. . . . . . . . . . -. F: “
6、._ I“ _ . . . . . ._. . . . . . . . . 1 _ -.-.-. . , .- .“. . . . 1 . MIL-A-6091 Alcohol, Ethyl Specially Denatured, Aircraft FSC 8030 / Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-8514C AO 7799906 00989bI I MIL-C-8507 Coating, Wash Primer
7、(Pretreatment) for Metals, MIL-P-8585 Primer Coating; Zinc Chromate, Low-Moisture- MIL-B-26701 Bottles, Screw Cap and Carboys, Polyethylene, Applicatton of (for Aeronextical Use) Sensistivity Flexible, Plastic Federal. FED. TEST METHOD Paint, Varnish, Lacquer, and Related Materials; STD. NO. 141 Met
8、hods of Inspection, Sampling, and Testing MIL-STD-105 Sampling Procedures and Tables for Inspection MIL-STD-129 Marking for Shipment and Storage by Attributes (Copies f specifications, standards, drawings, and publications required by suppliers in connection with specific procurement fbnctions shoul
9、d be obtained from the procuring activity or as directed by the contracting officer.) 2.2 Other publications.- The following document forms a part of this specifi- cation to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for pro
10、posal shall apply: .Interstate - Commerce Commission 49 CFR 71 - 90 Interstate Commerce Commission Rules and Regulations for the Transportation of Explosives and Other Dangerous Articles - (The In+,erstate Commerce Commission Regulations are now a part of the Code of Federal Regulations (latest cumu
11、lative pocket supplement) available from the Superin- tendent of Documents, Government Printing Office, Washington, D. C. 20402. Orders for the above publication should cite “Code of Federal Regulations, 49 CFR 71 - 90 (Revised 1956) .II) 3 REQUIRETiIENTS 3.1 Materials.- The ingredients used in the
12、manufacture of this product shall conform to applicable Government specifications, Ingredient materials conforming tc. contractors specifications may be used pro ided that pripr approval is obtained i“rom the procuring activity. The use of contractors specifications shall not con- stitute waiver of
13、Government inspection. 3.1.1 Toxicity.- The material shall have no adverse effect on the health of personnel when used for its intended purpose. 2 * . . . L . . . . -. . L . 1:. I. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-c-LC 80 = 997770b
14、 0048962 3 _? . . %. .“ . .- . . i . . . . i- - MIL-C-8514C (ASO) “ . . . h U ., .“_“* .“ _.“-“-. . “ -. . - . _-. 3.2 Composition.- The coating shall consist of ingredients conforming to the applicab1e.specifications in the proportions shown in table I. The formula of the base is given slightly. in
15、 excess of 100 gallons to allow for normal manufactur- : ing loss. .- .t . . .“ . . . . . . -_ 7 li .-A. r . . _- . .- . - .- - - * TABLE :I. Composition Pounds per 100 . . Coating ingredients : - mixed material gallons of. - I Ingredients of resin component ( 80 gdlons : Polyvinyl-butyral resin g/
16、. - Zinc chromate (insoluble type) 2/ Magnesium-silicate 4f Butyl alcohols normal (TT-B-846) Ethyl. alcohol (MIEA-6091). Ingredients of aoid component Phosphoric acid (class 1. of Water (maximum) Ethyl alcohol (20 gallons) : 0-0-670) ( MIL-A-6091 ) 56 54 8 125 380 28 25 102 I “ . Gallons per 100 mix
17、ed material gallons of - * 6.10 1.59 O. 35 18.40 55 * 70 2.0 3.0 . 15.0 1/ The use of lampblack or any other tinting pigment shall be prohibited. a The resin shall be a polyvinyl partial butyral resin containing only I . : .*.: . :, . - .“ . polyvinyl butyral, polyvinyl alcohol, and polyvinyl acetat
18、e in the molecule, +. 1. . -. The resin shall be one of two types conforming to the. following require- ments: .I ,- , Type- I Type II Polyvinyl alcohol, percent by weight - 18.0 to 20.0 10.5 to 13.0 Polyvinyl acetate, percent by weight maximum 1.0 1.5 Viscosity: 6 percent in methano1,centipoises at
19、 20 C 13 to 18 - -“ 5 percent in ethanoi (95 percent) centi- poises at 25O C . .- “- . 18 to 28 Specific gravity 1.05 to l.i5 . 1.05 to 1.15 - 3/ The zinc chromate shall be of an insoluble type, showing an analysis 16 to 19 percent Cr03 and 67 to 72 percent ZnO, and not more than 1 percent water sol
20、uble salts. Clark, and Daniels #399 SF, or eguivalent, is preferable in order to produce a finely ground material and a smooth film. k/ The use of an extra. fine variety of magnesium-silicate such as Whittaker, 3 . . . . , . . . . . . ._ “._. _I . . .“-. “_ -.-. I “. -7 . _ . . “_ . -. “ . , . “. -
21、.“ 3.- . . “. -. .e . . ._.I . . - “ . . . . . . . .- . ._.“W . “.“ -. ?._. . , l . . . “. “Y“ ,“ “- . “- “ . _.-,“- .“ . . i“. . . . . - “ . “ . -. . . . . *. . . . . ,. .“ . . . . . i . . -. . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-=c . .
22、MIL-C-8514C(ASG) .- 3.3 Manufacture.- The Component raw materials of the coating-base- shall be mixed and ground as required to produce a product which is uniform,istable, free from grit and entirely suitable for the purpose intended. Prior to addition of the acid component, the product shall be cap
23、able of being broken up easily .with a paddle to 8 smooth, uniform consistency, and shall not liver; thicken, curdle, gel, nor show any other objectionable properties. The component ingredients of the acid Component shall be mixed until uniform in composition. . - .- 3.4 CJuantitative requirement,-
24、The coating shall conform to the quantitative requirements shown in table IL when tested as specified in section 4. “ 3.5 sualitative requirements.- -. 3.5.1 W.- The odor of the resin component and of the acid Component shall be normal for the volatiles permitted when tested as specified in 4.6.2. 3
25、.5.2 Color.- “he color of the coating after drying. shall be characteristic of the pigments specified in table I. .“ 3.5.3 Water in resin component .- There shall be no indication of water present in the resin component when tested as specified in 4.6.5. 3.5.4 Butanol,- Butanol shall be present when
26、 the coating is tested as spec if ied in= 3.5.5 Compatibility.- There shall be no evidence of incompatibility of any of the ingredients of the mixed coating when tested as specified in 4.6.9, . . . . . . . . ,.“ - . -.- - .,“. . . . . . C1 . :;: *: . .: factory intercoat and system adhesion of the f
27、inish scheme. . “.- . . . ., . _- . . . . . . . . . . . 8, i. . . . . . .“,“I,. “1_.1. “,. -.-e. I. “- ,“_.-“ . . -.I .e. . . a . I. . A . “ “_.L C *.S. . . .I,.* . . . “ 3.5.8 Smoothness and appearance.- A film of pretreatment coating prepared I., and tested as specified shall dry to a smooth finis
28、h, free from grit, seeds, or other surface imperfections, On panels prepared and tested as specified in 4.6.12, a discernible image of the wire screen of a No.4 sieve shall be obtained. _ +.: 3.6 Workmanshie,- The component ingredients shall be carefully mixed and _. . processed in a manner that wil
29、l assure conformance to all the requirements of this specification. . - . .I 4 . . “ . - c-.; * . . . . . I . . . . . . *I. . . . . . f , i : :.c ; . ,I . . .- r- F I :- .“ -1 . I: . :.:;:; -,“ ., y. “-c Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-
30、,-r Characteristics CharacteriBtiC8 P resin component: . Pigment , percent by weight- Volatiles, percent by weight . Nonvolatile vehicle, percent by weight (calculated by difference) . Ratio of pigment to nonvolatile vehicle by weight .-. Coarse particles and skins, a8 -residue retained on standard
31、No. 325 mesh sieve (RR-S-00366), percent by weight Viscosity, Krebs units Weight per gallon, pounds Fineness of grind Chromium oxide (Cr03), percent by weight Zinc oxide (ZnO) ,percent by weight of of pigment . pigment . . Dist illekion : Initial boiling point, o C Temperature at 80 ml. point C Temp
32、erature at 100 ml. point, o C End point, temperature, o C Volume at end point ml. Characteristics of acid component: Phosphoric acid, percent by weight Distillat ion : Initial boiling point, o C Temperature at O5 d. point o C Volume at end point, ml. mimum temperature during distillstion, OC Weight
33、per gallon, pounds Characteristic of primer pretreatment coating: Time of drying hard, minutes Minimum 9.5 80.0 8.5 9.7 to 9 -” . 57 7.2 7 14 57 63 116 112 ”- ”- 15.0 63 “- 120 ” 7.5 “- Maximum -10.5 - 82.0 ”: - 9a.5 10.3 to 9 . 0-5 74 . 7.7 -” ”- ”- 83 85 120 . ”- ”- . 16.5 83 83 “4 .- 102 I 7.9 30
34、 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-, flIL-C-8514C 80 9979906 0098965 9 a- . ,. . . c,. . . . . . . - . .: . . MIGC-8514C(ASG) . E:;. . . . . . . . _ . . . . . . . . ,. “*. “. . . . . . . . . . . . . . . . . . . . . . . 4. QUALITY ASSURA
35、NCE PROVISIONS 4.1 Responsibilitj. for inspection.- Unless otherwise specified in the con- . tract or purchase orderpthe supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified, the supplier may iatilize his own facilities or any
36、other commercial laboratory accept-. .-:. ._. inspections set forth in the specification where such inspections are deemed neces- .r eary to aesure supplies and services conform to prescribed requirements. -i- . . -. 1 : - . . :able to the Government. The Government reserves the right to perform any
37、 of the . . r.“. 1. - . . L -. , 4.2 Classification of inspections.- All the inspections required herein for the teating of pretreatment coating are classified as quality conformance inspec- tions, for which necessary sampling techniques and methods of testing-are specified in this section, h 4.3 Te
38、st conditions.- The laboratory testing conditions shall be in accord- . I .- “ .“ . “1-1- -. . . . _ . . “ _ . . . “ I “ “.- _.I -. . . ance with Federal Test Method Standard No, 141, except as specifically modified herein. . . . - 4.3.1 Test panels. - All panels for test purposes shall be unscored.
39、, solvent- .: . cleaned, aluminum-clad aluminum alloy conforming to QQ-A-250/5, except 88 :, - . - . p: . . . . 3 Redection criteria,; If a test specimen fails to pass any of the tests required by this specification, the lot represented by.the sample shall be rejected, 4.6. Inspection methodsd.- The
40、 inspections of this specification shall be Ger- .- formed in accordance with the applicable methods of Feseral Test Method Standard No. 141 and as- specified herein “ “ _. - . . . - - 4.6.1 . Examination of product .- The pretreatment coating shall be examined for conformance .with the material and
41、 workmanship requirements of this specifica- tion. . .-. _. “ _. 4.6.2 The tests listed below shall be conducted as .specified in Federal Test Method Standard No. 141 : _- Applicable method No. , “ _. Fed. Test Method Std. L Test No. 141 .- Pigment (using ethyl alcohol as extraction .mixture) 4021 V
42、olatiles 4041 Nonvolatile vehicle (calculated Coarse particles and skins (using Viscosity 4281 Weight per gallon 4184 Fineness of grind . . JJ 4411 Odor 4401 by difference) 4041 - . alcohol as wash liquid) 4092 . - 1/ Only the 4- or 2-mil gages may be used, with preference expressed for the latter.
43、“. I .:.;i 4.6.3 Pigment analysis.- The test shall be conducted as follows. 4.6.3.1 Preliminary separation. - Weigh out a 2,000-gram sample of the pig- ment and transfer to a 250-milliliter (ml. ) beaker, Moisten the pigment with acetone and add 25 ml. of 1:4 sulfuric acid. Let stand on steam bath f
44、or 1 hour . with occasional stirring. Filter, wash with 1:4 sulfuric acid, free of chromium, and transfer filtrate to a 250-ml. volumetric flask. Dilute filtrate to exactly 250 ml and reserve for zinc and chromium determinations (see 4.6.3.2 and 4.6.3.3). 4.6.3.2 Zinc oxide.- Remove a 50.0-ml. porti
45、on from the volumetric flask and transfer to a 400-ml. beaker. Dilute to 150 ml. with distilled water and add 25 ml. of a 25 percent solution of tartaric acid Make just neutral to litmus paper with -onium hydroxide and add 25 ml. of formic acid mixture. (To 400 ml. formic acid add 60 ml. ammonium hy
46、droxide.Dissolve 500 grams of ammonium sulfate in approx- imately 1 liter of distilled water. Mix the two solutions and add sufficient water .- to make 2 liters. ) Care: ahould be taken to adjust the acidity to the proper pH for the quantitative precipitation of the zinc sulfide. Pass a rapid stream
47、 of hydro- gen sulfide through the solution for 30 minutes. Filter off the precipitated zinc 7 . . . . .P. . . . . . -, . -.I- I . .-.-.- . . . . . . . .- - . .- .-.- “.“ . . “ “.-, .e. “ .- . . . . -. “ -. .“. “ . -I- “ . -.a_ .- . . .“/ . *I. . . :.-. . . . . . *., . . . . . i f: . - .-.- “_. “ “
48、.- - . , . . . . h. _.1“ . . . . , . . . . .- . . . . . . . . . . . . . . . . . . .- ._ . “._., . “. “. “.“. . L. .“ -“. - - . . “-I . . . .“ “.a _.“. “ .- .-. . . . . I . . L- i i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILC-8514C( MG) *. sulfide and wash with distilled water saturated with hydrcgen sulfide. fit the precipitate and paper into a tared porcelain crucible, dry the paper, and then char at low heat until the paper is consumed. Increase the heat to 1 ,OOOo C, and ignite for 10 minutes. Let cool in desiccator a
