1、AMSC N/A FSC 8030Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use inimproving this document should be addressed to: WR-ALC/LKJE, 460 2 nd Street, STE 221, Robins AFB, GA31098-1640 by using the Standardization Document Improvement Proposal (DD for
2、m 1426) appearing at theend of this document or by letter.MIL-PRF-3043C13 February 1998SupersedingMIL-R-3043B5 January 1972PERFORMANCE SPECIFICATIONRESIN COATING, PERMANENT,FOR ENGINE COMPONENTS AND METAL PARTSThis specification is approved for use by all Departments and Agencies of the Department o
3、f Defense.1. SCOPE1.1 Scope . This specification covers one type of permanent resin coating for surfaces of enginecomponents and metal parts.2. APPLICABLE DOCUMENTS2.1 General . The documents listed in this section are specified in sections 3 and 4 of this specification.This section does not include
4、 documents cited in other sections of this specification or recommended foradditional information or as examples. While every effort has been made to ensure the completeness of thislist, document users are cautioned that they must meet all specified requirements documents cited insections 3 and 4 of
5、 this specification, whether or not they are listed.2.2 Government documents .2.2.1 Specifications and standards . The following specifications and standards form a part of thisdocument to the extent specified herein. Unless otherwise specified, the applicable issues of thesedocuments are those list
6、ed in the specific issue of the Department of Defense Index of Specifications andStandards (DoDISS) and supplement thereto, cited in the solicitation (see 6.2).SPECIFICATIONSFEDERALTT-S-735 Standard Test Fluids; HydrocarbonINCH-POUNDProvided by IHSNot for ResaleNo reproduction or networking permitte
7、d without license from IHS-,-,-MIL-PRF-3043C2DEPARTMENT OF DEFENSEMIL- PRF-7808 Lubricating Oil, Aircraft Turbine, Synthetic Base,NATO Code Number 0 - 148MIL-M-3171 Magnesium Alloy, Processes for Pretreatment andPrevention of Corrosion onSTANDARDSFEDERALFED-STD-313 Material Safety Data, Transportati
8、on Data and DisposalData for Hazardous Materials Furnished to GovernmentActivities(Unless otherwise indicated, copies of the above specifications, standards, and handbooks areavailable from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D,Philadelphia, Pennsylvania 19111-5094
9、.)2.3 Non Government publications . The following documents form a part of this document to the extentspecified herein. Unless otherwise specified, the applicable issues of the documents that have been adoptedby the DoD are those listed in the specific issue of the DoDISS cited in the solicitation.
10、Unless otherwisespecified, the documents not listed in the DoDISS are the issues of the documents cited in the solicitation.AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)ASTM D 117 Standard Guide for Sampling , Test Methods, Specifications,and Guide for Electrical Insulating Oils of Petroleum Ori
11、gin(DoD adopted)ASTM D 1308 Standard Test Method for Effect of Household Chemicals onClear and Pigmented Organic Finishes (DoD adopted)ASTM D 1748 Standard Test Method for Rust Protection by MetalPreservatives in the Humidity Cabinet (IP 3 66/84)(DoD adopted)ASTM D 2196 Standard Test Methods for Rhe
12、ological Properties ofNon-Newtonian Materials by Rotational (Brookfield)Viscometer (DoD adopted)ASTM D 2369 Standard Test Method for Volatile Content of Coatings(DoD adopted)(Application for copies should be addressed to the American Society for Testing and Materials100 Barr Harbor Drive, West Consh
13、ohocken PA 19428-2959.)Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3043C3SOCIETY OF AUTOMOTIVE ENGINEERS (SAE)SAE AMS 1546 Compound, Carbon Removing, Orthodichlorobenzenefor Engine Parts (DoD adopted)SAE AMS 4377 Sheet and Plate, Magnesiu
14、m Alloy 3.0A1 - 1.0Zn - 0.20Mn(AZ31B - H24) Cold Rolled, Partially Annealed (DoD adopted)SAE AMS 5046 Sheet, Strip, and Plate, Carbon Steel (SAE 1020 and 1025)(Annealed) (DoD adopted)(Application for copies should be addressed to SAE International, 400 Commonwealth Drive,Warrendale, PA 15096-0001.)2
15、.4 Order of precedence . In the event of a conflict between the text of this document and the referencescited herein, the text of this document takes precedence. Nothing in this document, however, supersedesapplicable laws and regulations unless a specific exemption has been obtained.3. REQUIREMENTS
16、3.1. Qualification . The resin coating furnished under this specification shall be authorized by thequalifying activity before contract award.3.2 Material . The base material shall be a thermosetting resin, free from drying and non-drying oils andcellulose.3.2.1 Recycled, recovered, or environmental
17、ly preferable materials . Recycled, recovered, orenvironmentally preferable materials should be used to the maximum extent possible provided that thematerial meets or exceeds the operational and maintenance requirements, and promotes economicallyadvantageous life cycle costs.3.3 Toxicity . The mater
18、ial shall have no adverse effect on the health of personnel when used for itsintended purpose. The material shall not contain any hazardous compound as defined in FED-STD-313,nor shall it contain any chemical listed in the current report of known carcinogens of the NationalToxicology Program (see 4.
19、3).3.4 Color . The material shall be blue when sprayed onto metallic surfaces. After the baking period, thecoating shall exhibit a green transparent coloration so that the metal surface underneath the film will beclearly discernible (see 4.4).3.5 Solids content . The solids content of the coating as
20、 furnished shall be 25 to 30 percent by weight (see4.5).3.6 Viscosity . The viscosity shall be 0.4 poise or less at 77 o F 2 o F (see 4.6).3.7 Photochemical requirements . The manufacturer shall certify that materials used in the adhesive arenon-photochemical reactive (see 4.2).Provided by IHSNot fo
21、r ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3043C43.8 Coating requirements .3.8.1 Application . The material shall be capable of being applied to metallic surfaces by dip or spray atroom temperature. Room temperature shall be defined as the temperature range
22、of 65 o F to 85 o F and arelative humidity of 50 10 percent (see 4.8.1).3.8.2 Drying time .3.8.2.1 Air dry . Maximum time for the coating to dry to the touch at room temperature shall not exceed30 minutes (see 4.8.2.1).3.8.2.2 Oil bake . The coating air dried at room temperature 16 to 24 hours shall
23、 bake hard and tough andbe free of bubbles, pinholes, or other film irregularities when immersed in hot lubricating oil (see 4.8.2.2).3.8.2.3 Oven bake . The coating shall bake hard and tough and be free of bubbles, pinholes, or other filmirregularities after baking. Test panels prepared for test of
24、 spray application, especially shall be examinedfor these defects. A slight orange peel effect on these panels is acceptable (see 4.8.2.3).3.9 Flexibility requirements .3.9.1 Bending flexibility . The coating on a finished panel, shall show satisfactory anchorage at the bendwhen rapidly bent over a
25、0.250 inch rod. It shall show no tendency to chip off in large pieces or peel whenscratched or scored with a sharp knife. Slight cracking at the bend will be permitted (see 4.9.1).3.9.2 Abrasive flexibility . The film on a specimen shall show no sign of chipping or peeling whensubjected to sandblast
26、ing. However, wearing away of the film by abrasion will be permitted (see 4.9.2).3.10 Environmental requirements .3.10.1 Humidity resistance . The film shall show no evidence of corrosion or spread of corrosion beyondthat in the scratches cut in the finish. Additionally, the film shall show no softe
27、ning, peeling, blistering,chipping, or loss of adhesion (see 4.10.1).3.10.2 High humidity (cold cycle) . The film shall show no sign of corrosion beyond that in the scratchescut in the finish. Additionally, the film shall show no softening, peeling, blistering, chipping, or loss ofadhesion (see 4.10
28、.2).3.10.3 Salt spray resistance . The film shall show no evidence of corrosion or spread of corrosion beyondthat in the scratches cut in the finish. Additionally, the film shall show no evidence of softening, peeling,blistering, chipping, or loss of adhesion (see 4.10.3).3.10.4 Aromatic hydrocarbon
29、 resistance . The film shall show no evidence of failure. The change inweight shall not exceed 0.002 gram (see 4.10.4).3.10.5 Salt water hydrocarbon resistance . The film shall show no evidence of softening, blistering,leaching, or loss of adhesion. There shall be no evidence of corrosion on the met
30、al (see 4.10.5).Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3043C53.10.6 Hot oil resistance . The film shall show no evidence of film failure and the change in weight of thespecified test panel shall not exceed 0.005 gram. Darkening of th
31、e film shall not be cause for rejection (see4.10.6).3.10.7 Carbon remover resistance . The film shall show no flaking or peeling (see 4.10.7).3.11 Removability . Films shall be completely removable and corrosion-free (see 4.11).3.12 Storage stability . The resin coating shall have a minimum shelf li
32、fe storage of one year. The coatingshall be capable of meeting all of the requirements of this specification (see 4.12).4. VERIFICATION4.1 Classification of inspections . The inspection requirements specified herein are classified as follows:a. Qualification inspection (see 4.2)b. Confo rmance inspe
33、ction (see 4.2)4.2 Qualification and conformance inspection . Qualification and conformance tests shall consist of all ofthe tests specified in this section. The manufacturer shall provide a certificate of conformance with any lotof resin coating sold to the Government. The certificate shall verify
34、that the manufacturers productsatisfies the requirements as outlined in this specification. A lot is defined as all the resin coating offered atone time for procurement by the Government.4.3 Material Safety Data Sheet (MSDS) . An MSDS shall be prepared in accordance with FED-STD-313and submitted wit
35、h each lot of resin coating (see 3.2).4.4 Color verification . The resin coating shall be examined on the test panels after they have air dried.The coating shall be examined again after the test panels have been oven baked (see 3.4).4.5 Solids content test . Solids content shall be determined by AST
36、M D 2369 (see 3.5).4.6 Viscosity test . Viscosity of resin coating shall be determined using a Model LVF BrookfieldViscometer, or its equivalent in accordance with ASTM D 2196. Readings shall be taken after the spindlehas been operating for a minimum of three minutes (see 3.6).4.7 Test panels .4.7.1
37、 Test panels composition . Test panels shall be of steel and magnesium. Specifically, the steel shallbe in accordance with SAE AMS 5046. The magnesium shall be in accordance with SAE AMS 4377(AZ31B-H24), surface treated in accordance with MIL-M-3171, Type III.Provided by IHSNot for ResaleNo reproduc
38、tion or networking permitted without license from IHS-,-,-MIL-PRF-3043C64.7.2 Test panel sizes . The size and thickness of panels, in inches (ins.), for each test shall be as follows:Test Panels Test Size ins. Thickness ins.Spray application 6 X 12 0.014 - 0.030Dip application optionalDrying time op
39、tionalBaking in oil 1.250 X 4 0.063 - 0.125Oven baking 6 X 12 0.014 - 0.030Bending flexibility 3 X 6 0.014 - 0.030Abrasive flexibility 3 X 6 0.014 - 0.030Humidity 2 X 4 0.063 - 0.125High humidity (cold cycle) 2 X 4 0.063 - 0.125Salt spray 3 X 6 0.014 - 0.030Aromatic hydrocarbon 1.250 X 4 0.063 - 0.1
40、25Salt water hydrocarbon 3 X 4 0.014 - 0.030Cold cycle 2 X 4 0.063 - 0.125Hot Oil 1.250 X 4 0.063 - 0.125Removability optionalSandblast optionalCarbon remover 3 X 6 0.014 - 0.030Storage stability 6 X 12 0.014 - 0.0304.7.3 Test panel preparation . All edges shall be rounded and a 0.250 inch hole shal
41、l be drilled on thecenter line near one end for all panels except the 2 X 4 inch panels. Remove all edges, burrs, and corners(including those at the edges of holes). The 1.250 X 4 inch and the 2 X 4 inch panels shall be surfaceground to a roughness of 10 to 16 micro-inches root mean square. The 3 X
42、6 inch and 4 X 12 inch panelsshall be smoothly finished with a 320 grit paper. All panels not used immediately shall be preserved in anatmosphere having a relative humidity of 20 percent or less. Prior to use, the panels shall be thoroughlycleaned and dried with lintless cloths. After drying, the pa
43、nels shall be submerged in boiling 95 percentmethanol. Care should be taken during cleaning and preparation to avoid fingerprint contamination.4.8 Performance requirement tests .4.8.1 Coating application . All test panels except the spray application test panels shall be prepared by dipcoating in a
44、temperature range of 65 o F to 85 o F and a relative humidity of 50 10 percent. The clean testpanels shall be withdrawn vertically at a rate so as to produce a dry film coating thickness of 0.5 to 0.7mils for all tests except the flexibility test which shall be maintained with 0.2 to 0.3 mils. The 6
45、 X 12 inchpanels shall be coated by spraying to a film thickness of 0.5 0.2 mil. These panels shall then be allowedto air dry for not less than one hour at the above ambient conditions. All panels except the Baking in oiland the Oven baking test panels shall be baked prior to test at 325 o F 5 o F f
46、or 30 5 minutes (see 3.8.1).4.8.2 Drying time tests .4.8.2.1 Air dry test . Coated test panels air dried at room temperature at 75 o F 10 o F for 30 minutes shallbe dry to the touch with no transfer of coating (see 3.8.2.1).Provided by IHSNot for ResaleNo reproduction or networking permitted without
47、 license from IHS-,-,-MIL-PRF-3043C74.8.2.2 Oil bake test . Coated test panels air dried for 16 to 24 hours shall be immersed to a depth ofapproximately 2/3 of their length in hot lubricating oil conforming to MIL-PRF-7808 at 350 o F 10 o F for15 minutes. The panels shall then be removed, rinsed cle
48、an, and the finish examined for film irregularities.Darkening of the finish or difference of color in the immersed and unimmersed portion shall not be causefor rejection (see 3.8.2.2).4.8.2.3 Oven bake test . The test panels, coated by spraying and air dried for not less than 1 hour shall beplaced i
49、n an oven and baked for 30 5 minutes at 325 o F 5 o F (see 3.8.2.3).4.9 Flexibility requirements .4.9.1 Bending flexibility test . Condition the dry coated test panels at 73 o F 2 o F and a relative humidity of50 4 percent for at least 30 minutes. While at this temperature, the test panels shall be placed with thecoated side uppermost on a 4 inch diameter mandrel at a point equally distant from the top and bottomedges of the pane
