Mila8625 type ii, class 1 ams 2471 mila8625 type ii, class 2. Mila8625, type iii anodic coatings are also referred to as hardcoat anodized finishes. Fort wayne anodizing reference manual its not how its made. Class ii is an anodic coating used for more unimposing commercial applications. Mila8625 aluminum anodic coatings mila8625 is the military specification for anodic coatings for aluminum and aluminum alloys. Cured in accordance with milprf81733 type iv cured specific gravity 1. Base materials that mil a 8625 anodize type ii sulfuric anodizing can be applied include 1100, 2000, 3000, 5000, 6000, and 7000 series aluminum alloys. We have a requirement to anodize parts that are pins per mila8625 link is to free spec at defense logistics agency, dla.
I investigated and found out that what the customer intended to get from the clear coat was a protection from fading and fingerprints, and they wanted something that they could easily clean fingerprintssmudges off of. Nonchromic acid anodizing, for use as a nonchromate alternative for type i and 16 coatings see 3. Design and application guide for anodizing aluminum. Anodize, hardcoat mila8625, type iii 2469 b 580, type a 10074 thicker, denser anodize for superior abrasion resistance anodize, hardcoat, ptfe sealed mila63576 2482 anoplates anolube iii anodize, sulfuric, dyed mila8625, type ii, class 2 2472 b 580, type df 8079 black, blue, gold, green, and red dye available. Qqp35 type ii qqp35 type vi qqp35 type vii ams2700 mils5002 water emersion testing. Anoplate has been supplying hardcoat anodize since 1971 beginning in a dry ice chilled tank as an alcoa alumilite licensee and then later a sanford process licensee. Anodizing type ii passport instruction booklet 20 pdf class i ii. Milc26074 mildtl26074 amsb733 ams2404 thermal treatment bake available. The anodic coating types and classes covered by this speclflcatlon are as. Mila8625f anodic coatings, for aluminum and aluminum alloys. Sulfuric anodize per mila8625, type ii, class 2, black. Complete document anodic coatings for aluminum and aluminum alloys. Mila8625 type ii asm2471f class i clear ii multiple colors available teflon ptfe available. Cncl ss by mila8625 complete reprint w not format details price pdf.
Our anodized coatings can be customized to meet specifications requirements for coating weight, corrosion resistance, paint adhesion, and abrasion resistance. Oxytech ii is an extended type ii processing that offers excellent corrosion protection of over 816 hours of salt spray testing on 6061 aluminum. Type ii sulfuric acid anodizing, conventional coatings produced from sulfuric acid bath. Type iii anodizing is an abbreviation derived from the military standard mila8625 type iii category. If anyone asks for mil a 8625, type 1, be sure thats what they really want.
If you are in need of a long part anodized we have some of the longest tanks in houston. Mila8625 type ii, class 1 ams2471 astm b580 type b thru f 7. Specifies that there will be a dye applied to the finished part. Mildtl5541 type ii class 1a trivalent chromate, low electrical resistance rohs compliant chemical film mildtl5541 type ii class 3 hardcoat, nondyed natural, clear hardcoat mila8625 type iii, class i ams2468 ams2469 astm b58079 type a 7. If higher type iib coating weights are permissible for the intended use, type ii should be specified. Nov 15, 2018 type iii is much more abrasive resistant due to the increased density and can have a thicker buildup than type ii too. Discoloration on the surface that has been sized is acceptable see 6. Each type of anodize is used for a specific reason. Parts with type ii coatings, external or internal, with a total tolerance of 0. Aluminum anodizing anodized aluminum type ii anodizing. This mil spec covers the requirements for electrochemicallyformed anodic coatings on aluminum and aluminum alloys for nonarchitectural applications.
This report documents evaluations of trivalent chromium compositions tcp as sealers for mila8625f type ii, iib, and ic anodic coatings. The specifications listed are similar but not identical. Finish specifications cross reference this chart is an approximate reference. Type ii conventional coating from a sulfuric acid bath. Color will vary from light to dark gray depending on the base alloy. It provides better corrosion protection than black oxide. Arrow cryogenics offers standard mila8625 type ii aluminum anodizing at our stateoftheart facility in blaine, minnesota. Anodizing 483 additives, temperature, voltage, and amperage. Hardcoat anodize mila8625 type iii 3 aluminum anodizing. Mildtl5541f chemical conversion coatings on aluminum. The garden grove location, formerly coastline metal finishing, is one of the premier metal finishers in southern california, located in the city of garden grove. Chromic acid anodize type 1 typ 1b sulfuric acid anodize type 2, clear, black dye hard coat anodize, type 3, clear or black shot peening passivation ndt magnetic particle ndt penetrant astm e1417 mil c5541 or mildtl 5541 mila8625 mila8625 mila8625 ams 2430 qqp35, astm 2700 astm e 1414 astm e1417. Anodize, sulfuric, dyed mila8625, type ii, class 2 2472 b 580, type df 8079 black, blue, gold, green, and red dye available anodize, sulfuric, undyed mila8625, type ii, class 1 2471 b 580, type df 7599, 8078 sealed in dichromate, di water, or nickel acetate. Type ii anodizing is an abbreviation derived from the military standard mila8625 type ii category.
If there is a requirement for hard anodizing and any other type of chemical. When type ii anodic coatings are specified for use in photosensitized nameplates, oxalic acid anodizing may be used in lieu of sulfuric acid anodizing. Chemical conversion coatings on aluminum and aluminum alloys this specification is approved for use by all departments and agencies of the department of defense. Sulfuric anodize rohs compliant type ii class 1 mila 8625 type ii class 2 type iii class 1 type iii class 2 sulfuric anodize teflon impregnation type i mila 63576 sulfuric anodize is rohs compliant except when used with a dichromate seal. Hard coat anodizing services mila8625 type 3 aluminum. When aluminum alloys are anodized an oxide coating is formed that grows from the base metal and leaves a hard corrosion resistant coating with. Mil a 8625 pdf 1627kb material anodic oxide builds up on the part.
Conventional type iii aluminum anodizing uses a high voltage process up to 100v to create the oxide layer. It is simply a thinner anodic coating that provides better corrosion resistance than chem film chromate conversion coatings, is a nonchrome finish and provides a very adequate base for organic. Type iib anodic coatings are produced in the standard type ii sulfuric acid bath and under virtually the same processing conditions as type ii. Types the sulfuric anodizing types we adhere to are. The materials used to produce a chemical conversion coating shall be approved for the selected type, class, form, and application method in accordance with the. Mila8625 pdf 1627kb material anodic oxide builds up on the part.
Give us a thickness range any dimensional requirements drawings always help, and if there are masking requirements, they should be highlighted on the drawing sample parts always help, especially with masking aluminum alloy selection suggestions. User shall rely on his own information and tests to determine suitability of. Mil a 8625 type ii datasheet, cross reference, circuit and application notes in pdf format. Base materials worked aluminum and aluminum alloys. Hardcoat anodize type 3 mila 8625 type iii at anoplate. Can be used for inspection of aluminum forgings or castings by noting evidence of chromic acid. Type i, ib, and ii are used for corrosion resistance and some degree of abrasion resistance. Understanding and specifying anodizing omw corporation. All recommendations, statements, and technical data contained herein are based on tests we believe to be reliable and correct, but accuracy and completeness of said tests are not guaranteed and are not to be construed as a warranty, either expressed or implied. Oxytech is more than just hard coat anodize, this rigid process delivers a type iii anodize finish that is not only more consistent but also proven to outwear standard hard coat anodize finishes. It provides details, methods, and procedures for these various coatings. Sulfuric acid anodizing mila8625 type ii 2 sulfuric. Techmetals has over 50 years experience in aluminum anodizing, both type ii and type iii hard coat anodize. Mil a 8625 type ii, class 1 ams2471 astm b580 type b thru f 7.
Military specification anodic coatings for aluminum and aluminum alloys this amendment forms a part of mila8625f, dated 10 september 1993, and is approved for use by all departments and agencies of the department of defense. If there is a requirement for hard anodizing and any other type of chemical processing, please contact fort wayne anodizing for recommendations. Type iib nonchromate alternative for type i and ib coatings. A discussion started in 2009 but continuing through 2019. Type ic nonchromic acid anodizing, for use as a nonchromate alternative for type i and ib coatings see 3. Mila8625 latest version, type iii class 1 and class 2. This milspec covers the requirements for electrochemicallyformed anodic coatings on aluminum and aluminum alloys for nonarchitectural applications. Hardcoat anodizing type iii precision coating medical. Mildtl5541f chemical conversion coatings on aluminum and. Processes and applicable specifications process metal applicable specification normal coating thickness and color or appearance remarks alodine see chemical films anodize type i conventional chromic acid aluminum mil a 8625 type ib low voltage class 1 non dyed. Mil a 8625 latest version, type iii class 1 and class 2. For a mila8625, type ii coating you would also call out what coating thickness you want. Mila8625 type ii datasheet, cross reference, circuit and application notes in pdf format.
We also provide hard coat anodizing mila8625 type iii. The materials used to produce a chemical conversion coating shall be approved for the. In type ii anodizing, the oxide layer is created by passing direct current dc through an electrolytic solution of diluted sulfuric acid. Not transparent gray hard and dense type film possessing extreme opaque. Finish specifications cross reference this chart is an approximate reference only. I had a sample plated using mila8625 type ii, class 2 same as before, but required them to add a sealer.
Type thickness type ii conventional coatings produced 1. Zyci plating specifications general information page 5 reference only april 2018 black ebonol milf495 a uniform black corrosion retardant for copper or copper plated parts. I think you said that the anodizer you spoke with offered this as an alternative to. Mil dtl5541 type ii class 1a trivalent chromate, low electrical resistance rohs compliant chemical film mil dtl5541 type ii class 3 hardcoat, nondyed natural, clear hardcoat mil a 8625 type iii, class i ams2468 ams2469 astm b58079 type a 7. Technical details for mila8625 type ii and type iii pfi inc. May 01, 2010 type ii can also overlap, sometimes, the socalled architectural anodized finishes. Military specification anodizing mila8625 saf southern. These classes are not the same as aa class 1 and 2. Processes and applicable specifications process metal applicable specification normal coating thickness and color or appearance remarks alodine see chemical films anodize type i conventional chromic acid aluminum mila8625 type ib low voltage class 1 non dyed. Titanium anodize type ii ams 2488 phosphoric acid anodize astm d3933 br 127 astm d393398. Introduction to hard anodizing it has long been known that reactive metals and alloys can be protected from corrosion and.
Sulfuric anodize per mil a 8625, type ii, class 2, black. If oxalic acid anodizing is used, the resultant coating shall meet the requirements of this specification for type ii anodic coatings. Heat treatablealloysshall be in the requ,qedtemperobtainedby heattreatment,such ast4, t6,or t73, prior toanodfzing. Type iii is much more abrasive resistant due to the increased density and can have a thicker buildup than type ii too. Base materials that mila8625 anodize type ii sulfuric anodizing can be applied include 1100, 2000, 3000, 5000, 6000, and 7000 series aluminum alloys. Trivalent chromium process tcp as a sealer for mila8625f. Several conventional anodizing processes and their resulting properties are shown in table 1. When type ii anodic coatings are specified for use in photosensitized nameplates, oxalic acid anodizing may be used in lieu of sulfuric acid. Not measurement sensitive i p41la8625f 10 september 1993.
Mila8625f anodic coatings, for aluminum and aluminum. Mil a 8625 aluminum anodic coatings mil a 8625 is the military specification for anodic coatings for aluminum and aluminum alloys. Type ii and 116 coatings shall be the result of treating aluminum and a,lum. We have a requirement to anodize parts that are pins per mil a 8625 link is to free spec at defense logistics agency, dla. Nov 01, 2005 type iib anodic coatings are produced in the standard type ii sulfuric acid bath and under virtually the same processing conditions as type ii.
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