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1、 MILITARY SPECIFICATION ANODIC COATINGS FOR ALUMINUM AND ALUMINUM ALLOYS This amendment forms a part of MIL-A-8625F, dated 10 September 1993, and is approved for use by all Departments and Agencies of the Department of Defense. PAGE 2 2.1.1, under SPECIFICATIONS, MILITARY: Delete “MIL-C-81706 Chemic
2、al Conversion Materials for Coating Aluminum and Aluminum Alloys.” PAGE 3 3.3.1.2, line 7: Delete “IA” and substitute “IB.” PAGE 4 3.3.1.2: Change paragraph number to “3.3.1.3.” In line 4, delete “IA” and substitute “IB.” PAGE 5 Add: “3.4.2.2 Photosensitized (identification) nameplates. When type II
3、 anodic coatings are specified for use in photosensitized nameplates, oxalic acid anodizing may be used in lieu of sulfuric acid anodizing. If oxalic acid anodizing is used, the resultant coating shall meet the requirements of this specification for type II anodic coatings. If copy and background co
4、lor are added to photosensitive nameplates, silver compounds or dyes shall be used. Unprocessed photosensitive aluminum shall be classified as class 1. Nameplates made from photosensitive aluminum shall be classified as class 2.” AMSC N/A 1 of 3 AREA MFFP DISTRIBUTION STATEMENT A. Approved for publi
5、c release; distribution is unlimited. NOT MEASUREMENT SENSITIVE MIL-A-8625F AMENDMENT 1 15 September 2003 MIL-A-8625F AMENDMENT 1 2 PAGE 6 3.7.1.2c: Delete and substitute: “c. In addition to the requirements in a and b above, types I and IB test specimens that exhibit large areas of gross discolorat
6、ion (dark grey areas) shall meet the following additional requirement. The total number and per panel number of pits used to verify that the requirements of a and b above are met shall be determined by adding the number of pits found with the unaided eye to the number of pits found in the areas of g
7、ross discoloration determined when examined at a magnification of 10X. This requirement does not apply to areas of slight discoloration or fading such as those areas that may result from chromate leaching during salt spray exposure.” PAGE 9 TABLE II: Add “2/ III” to column 2, row 3, Applicable type
8、I, IB, IC, II, IIB. Add the following footnote below the table “2/ Type III coatings shall be tested for corrosion resistance only when it is specified that the coating is sealed.” PAGE 10 4.3.3.2.3: Delete and substitute: “4.3.3.2.3 Test specimens for corrosion and light fastness resistance. Corros
9、ion resistance shall be determined on undyed and sealed production parts or specimen panels (see 4.3.3.2). When light fastness testing is specified (see 6.2), it shall be performed on dyed and sealed (class 2) production parts or specimen panels (see 4.3.3.2). When specimen panels are used, they sha
10、ll have a width of not less than 3 inches, a length of not less than 10 inches, and a nominal thickness of not less than 0.032 inch. PAGE 13 6.1, line 2: Delete “yipvide” and substitute “provide.” 6.1.1, line 7: Change “MIL-C-81706” to “MIL-DTL-81706.” PAGE 18 6.16, lines 2 and 4: Change “silicone”
11、to “silicon.” MIL-A-8625F AMENDMENT 1 3 PAGE 19 Delete 6.23 and substitute: “6.23 Subject term (key word) listing. Anodizing Chromates Chromic acid Phosphoric acid Potassium dichromate Sodium dichromate Sulfuric acid Custodians: Preparing activity: Army MR Navy - AS Navy AS (Project MFFP-0698) Air F
12、orce 11 Review activities: Army AR, AV, AT, CR, CR4, MI Navy OS, SH Air Force 70, 71, 99 NOT MEASUREMENT SENSITIVE MIL-A-8625F 10 September 1993 SUPERSEDING MIL-A-8625E 25 April 1988 MILITARY SPECIFICATION ANODIC COATINGS, FOR ALUMINUM AND ALUMINUM ALLOYS This specification is approved for use by al
13、l Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements for six types and two classes of electrolytically formed anodic coatings on aluminum and aluminum alloys for non-architectural applications (see 6.1). 1.2 Classification. Anodic co
14、ating Types and Classes covered by this specification are as specified herein (see 6.2 and 6.21): 1.2.1 Types Type I - Chromic acid anodizing, conventional coatings produced from chromic acid bath, (see 3.4.1) Type IB - Chromic acid anodizing, low voltage process, 22 +/- 2V, (see 3.4.1) Type IC - No
15、n-chromic acid anodizing, for use as a non-chromate alternative for Type I and IB coatings (see 3.4.1 and 6.1.2) Type II - Sulfuric acid anodizing, conventional coatings produced from sulfuric acid bath, (see 3.4.2) Type IIB - Thin sulfuric acid anodizing, for use as a non-chromate alternative for T
16、ype I and IB coatings (see 3.4.2 and 6.1.2) Type III - Hard Anodic Coatings (see 3.4.3) 1.2.2 Classes. Class 1 - Non-dyed (see 3.5.) Class 2 - Dyed (see 3.6.) Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Systems Engineering a
