1、 AMSC N/A AREA MFFP DETAIL SPECIFICATION SURFACE TREATMENTS AND INORGANIC COATINGS FOR METAL SURFACES OF WEAPONS SYSTEMS This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements for cleaning, s
2、urface treatment, and application of inorganic coatings for metallic surfaces of weapons systems parts. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 or 4 of this specification. This section does not include documents cited in other sections of
3、 this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3 or 4 of this specification, whether or
4、not they are listed. Comments, suggestions, or questions on this document should be addressed to: Commander, Naval Air Warfare Center Aircraft Division, Code 4L8000B120-3, Highway 547, Lakehurst, NJ 08733-5100 or emailed to michael.sikoranavy.mil. Since contact information can change, you may want t
5、o verify the currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil. NOT MEASUREMENT SENSITIVEMIL-DTL-5002E 12 July 2011 SUPERSEDING MIL-S-5002D 30 November 1989 Reactivated after 12 July 2011 and may be used for new and existing designs and acquisitions.
6、 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-5002E 2 2.2 Government documents. 2.2.1 Specifications and standards. The following specifications and standards form a part of this document to the extent specified herein. Unless otherwise sp
7、ecified, the issues of these documents are those cited in the solicitation or contract. FEDERAL SPECIFICATIONS TT-N-95 - Naphtha, Aliphatic TT-I-735 - Isopropyl Alcohol TT-C-490 - Chemical Conversion Coatings and Pretreatments for Ferrous Surfaces (Base for Organic Coatings) COMMERCIAL ITEM DESCRIPT
8、ION A-A-59315 - Powder Materials for Flame and Plasma Sprayed Coatings, General Requirements for DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-PRF-680 - Degreasing Solvent MIL-DTL-5541 - Chemical Conversion Coatings on Aluminum and Aluminum Alloys MIL-A-8625 - Anodic Coatings for Aluminum and Aluminum Al
9、loys MIL-DTL-13924 - Coating, Oxide, Black, for Ferrous Metals MIL-DTL-16232 - Phosphate Coating, Heavy, Manganese or Zinc Base MIL-C-17711 - Coatings, Chromate, for Zinc Alloy Castings and Hot Dip Galvanized Surfaces MIL-P-23408 - Plating: Tin-Cadmium (Electrodeposited) MIL-PRF-32295 - Cleaner, Non
10、-Aqueous, Low-VOC, HAP-Free MIL-DTL-45204 - Gold Plating, Electrodeposited MIL-R-46085 - Rhodium Plating, Electrodeposited MIL-Z-81572 - Zirconium Oxide, Lime-stabilized, Powder and Rod, for Flame Spraying MIL-C-81751 - Coating, Metallic-Ceramic MIL-T-81772 - Thinner, Aircraft Coating MIL-DTL-83488
11、- Coating, Aluminum, High Purity MIL-PRF-85570 - Cleaning Compounds, Aircraft Exterior MIL-PRF-87937 - Cleaning Compound, Aerospace Equipment DEPARTMENT OF DEFENSE STANDARDS MIL-STD-865 - Selective Brush Plating, Electrodeposition MIL-STD-870 - Cadmium Plating, Low Embrittlement, Electrodeposition M
12、IL-STD-889 - Dissimilar Metals MIL-STD-1500 - Cadmium-Titanium Plating, Low Embrittlement, Electrodeposition Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-5002E 3 MIL-STD-7179 - Finishes, Coatings, and Sealants, for the Protection of Aerosp
13、ace Weapons Systems (Copies of these documents are available online at https:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2 Non-Government publications. The following documents form a part of this
14、document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. ASTM INTERNATIONAL ASTM D329 - Standard Specification for Acetone. (DoD adopted) ASTM B545 - Standard Specification for Electrodeposited Coatings of Tin
15、. (DoD adopted) ASTM B600 - Standard Guide for Descaling and Cleaning Titanium and Titanium Alloy Surfaces. (DoD adopted) ASTM B633 - Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel. (DoD adopted) ASTM B679 - Standard Specification for Electrodeposited Coatings of Pall
16、adium for Engineering Use ASTM B700 - Standard Specification for Electrodeposited Coatings of Silver for Engineering Use ASTM A967 - Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts. (DoD adopted) ASTM D1732 - Standard Practices for Preparation of Magnesium Alloy
17、Surfaces for Painting. (DoD adopted) (Copies of these documents are available from www.astm.org or ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) SAE INTERNATIONAL SAE AMS2403 - Plating, Nickel, General Purpose SAE AMS2404 - Plating, Electroless Nickel. (DoD adopted) S
18、AE AMS2416 - Plating, Nickel-Cadmium, Diffused. (DoD adopted) SAE AMS2418 - Plating, Copper. (DoD adopted) SAE AMS2423 - Plating, Nickel, Hard Deposit SAE AMS2424 - Plating, Nickel, Low Stressed Deposit. (DoD adopted) SAE AMS2427 - Aluminum Coating, Ion Vapor Deposition (DoD adopted) SAE AMS2430 - S
19、hot Peening, Automatic. (DoD adopted) SAE AMS2432 - Shot Peening, Computer Monitored SAE AMS2447 - Coating, Thermal Spray, High Velocity Oxygen/Fuel Process. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-5002E 4 SAE AMS2460 - Plating, Chrom
20、ium SAE AMS2700 - Passivation of Corrosion Resistant Steels. (DoD adopted) SAE AMS7881 - Tungsten Carbide-Cobalt Powder, Agglomerated and Sintered SAE AMS7882 - Tungsten Carbide-Cobalt Chrome Powder, Agglomerated and Sintered SAE AMS-C-8837 - Coating, Cadmium (Vacuum Deposited). (DoD adopted) SAE AM
21、S-C-81562 - Coatings, Cadmium, Tin-Cadmium and Zinc (Mechanically Deposited). (DoD adopted) SAE AMS-M-3171 - Magnesium Alloy, Processes for Pretreatment and Prevention of Corrosion on. (DoD adopted) SAE AMS-P-81728 - Plating, Tin-Lead (Electrodeposited). (DoD adopted) SAE AMS-QQ-P-416 - Plating, Cad
22、mium (Electrodeposited). (DoD adopted) (Copies of these documents are available from www.sae.org or SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001.) 2.3 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this do
23、cument and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Materials and processes. Materials and processes shall conform to appli
24、cable documents, as specified herein. Additional guidance may be found in the DoD Corrosion Prevention and Control Planning Guidebook. Materials and processes not covered by applicable specifications and any deviations from the requirements herein shall not be used unless approved by the cognizant e
25、ngineering organization (see 6.5). 3.2 Finishing requirements. Unless otherwise specified, all fabrication operations, including thermal treatments and cleaning, shall have been completed prior to application of any surface treatment, metallic coating, and/or non-metallic coating. 3.3 Surfaces. Part
26、s, with the exception of those processed in accordance with MIL-DTL-16232, shall conform to specified dimensions and surface roughness conditions after final cleaning, surface treatment or coating. In the case of metals which may respond in a non-uniform manner when metal removal is done with mechan
27、ical, chemical, electrochemical, or electromechanical methods, inspection procedures shall be established and used to ensure each part has a uniform surface, including freedom from pits and intergranular attack. Where etching results, the degree found shall be demonstrated not to affect the servicea
28、bility of the parts. 3.4 Cleaning. Cleaning, prior to application of surface treatments and coatings, shall be as specified herein. These methods shall be utilized in a manner which does not result in damage to the metal, including freedom from pits, intergranular attack, and hydrogen embrittlement.
29、 When specified in the contract or order, an appropriate hydrogen embrittlement relief test shall be conducted. After cleaning, all parts shall be completely free of corrosion products, scale, paint, Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI
30、L-DTL-5002E 5 grease, oil, flux (see 3.4.3), and other foreign materials including other metals. After cleaning, the parts shall be coated as soon as practicable. Particular care shall be exercised in the handling of parts to ensure that foreign metals are not inadvertently transferred, as may occur
31、 when steel is allowed to come into contact with zinc surfaces. In addition, assemblies containing parts under sustained tensile stresses, or containing crevices which may retain cleaning solutions, shall not be cleaned as assemblies. 3.4.1 Organic contamination removal. The materials and processes
32、used shall be completely characterized and controlled to ensure that there will be no subsequent corrosion effects. 3.4.1.1 Organic soils. Organic soils shall be removed by emulsion cleaning, semi-aqueous immersion cleaning, alkaline or electrolytic alkaline cleaning (anodic only), solvent immersion
33、, solvent spraying, solvent hand cleaning, vapor degreasing, or combinations thereof, whichever is more applicable to the nature of the part and soil to be removed. Parts displaying corrosion effects shall be subject to rejection. 3.4.1.2 Hand cleaning. Hand cleaning shall be performed using degreas
34、ing solvents (MIL-PRF-680 or MIL-PRF-32295), aliphatic hydrocarbons (such as aliphatic naphtha, TT-N-95, or paint thinner, MIL-T-81772 Type I), isopropyl alcohol (TT-I-735), or acetone (ASTM D329). Solvent hand cleaning shall be performed using a clean, lint free cloth. Residues from the cleaning ag
35、ents shall be thoroughly rinsed off. Wiping/drying after cleaning shall be performed using a clean dry cloth to ensure that surface contaminants are removed. 3.4.2 Inorganic contamination (scale) removal. Inorganic contamination removal (descaling) shall be performed as specified herein. If specifie
36、d by the cognizant engineering organization, parts shall be stress relieved prior to chemical or electrochemical methods of descaling to remove residual tensile stresses. 3.4.2.1 Aluminum and its alloys. Aluminum and its alloys shall be either chemically or mechanically cleaned except as specified h
37、erein. Cleaners conforming to MIL-PRF-85570 or MIL-PRF-87937 are recommended for chemical cleaning. Mechanical cleaning using abrasives containing iron and its oxides, steel wool and wire, and copper alloy based materials shall not be used. 3.4.2.2 High strength steels. Steels, including corrosion a
38、nd heat resistant steels, hardened by thermal treatment or by cold working to full or surface hardness level of Rockwell C40 (180 ksi) and greater, shall be cleaned using either mechanical means, alkaline or electrolytic alkaline descaling (anodic only), molten salt bath methods or, when necessary,
39、acid pickling. Acid pickling shall be followed by a two hour bake at a temperature of 375 25 F (190 15 C) prior to the coating operation. Baking for hydrogen embrittlement relief shall begin within four hours of completion of acid pickling. No machining or mechanical deformation shall be performed p
40、rior to baking. For several steel types, a thin oxide layer may be formed after the two hour bake which may result in poor coating adhesion. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-5002E 6 3.4.2.3 Low-strength steels. Steels of Rockwe
41、ll hardness less than C40 (180 ksi) shall be cleaned using either mechanical means, alkaline or electrolytic alkaline descaling, molten salt bath methods, acid pickling, or combinations thereof. Immersion times in the pickling bath shall be kept at a minimum to prevent hydrogen absorption. 3.4.2.4 C
42、orrosion and heat resistant steels. Corrosion and heat resistant steels having a Rockwell hardness less than C40 (180 ksi) shall be cleaned by chemical or mechanical processes, or combinations thereof as specified in 3.4.2.3. High strength corrosion and heat resisting steels, Rockwell C40 (180 ksi)
43、or greater, shall be cleaned as specified in 3.4.2.2. For metals and alloys that are sensitive to contamination by gaseous constituents, such as hydrogen, oxygen, and nitrogen, and are exposed to atmospheres containing such materials during processing (e.g. heat treatment), sufficient metal shall be
44、 removed during manufacture to eliminate the contaminated material. Verification of the complete elimination of contaminated material shall be documented. If chemical cleaning methods are used to remove the impurities, the cleaning shall not result in any attack of the surface, either pitting or int
45、ergranular. After chemical cleaning, the surface shall be examined using a microscopic method at a magnification that clearly establishes the absence of attack. Parts with pitted surfaces or showing signs of intergranular attack shall be subject to rejection. 3.4.2.5 Magnesium and its alloys. Magnes
46、ium and its alloys shall be cleaned in accordance with SAE AMS-M-3171, or by other processes approved by the cognizant engineering organization. 3.4.2.6 Titanium and its alloys. For removal of contamination other than organic soil (see 3.4.1), titanium and its alloys shall be cleaned in accordance w
47、ith ASTM B600. 3.4.3 Flux removal. Soldering, welding, and brazing fluxes shall be removed by the use of hot water, soap and water, alcohol (TT-I-735), degreasing solvent (MIL-PRF-680), or other methods that do not result in attack of the metal. Methyl alcohol shall not be used on magnesium or titan
48、ium and their alloys. Acid or alkaline materials shall not be used, unless approved by the cognizant engineering organization. The completeness of flux removal shall be determined in accordance with the applicable welding, soldering, or brazing specification. 3.4.4. Use of abrasives. Abrasives used
49、on any metal or alloy shall not have been used on other metals or alloys unless they were used for a similar base metal (for example, aluminum abrasives on aluminum alloys). 3.4.5 Rinsing. When either acid (pH8) materials are employed, the cleaned parts shall be given a thorough rinse with water of a purity that removes all acid or alkali prior to the coating operations, such that no residual contamination remains. 3.5. Methods o
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