Type iii anodize can be performed using polytetrafluoroethylene ptfe based formulas, the bestknown brand name being teflon, and is a very durable anodize solution. Milprf85285e type i, class h coatings are multicomponent 3k, low voc, high solids polyurethane topcoats designed as a finish coat for military aircraft and equipment. Safs capabilities for military specification anodizing mila8625. All linetec anodize finishes are a class i coating, with the exception of ano204 clear, which is a class ii coating. Industrial finishing services industrial finishing types menu. Safs capabilities for military specification anodizing mil a8625. Amendment by military specifications and standards, 09152003. Class i anodize is used on the exterior of architectural projects. Mila8625, anodize, aluminum anodizing is an electrochemical process that converts the metal surface into a decorative, durable, corrosionresistant, anodic oxide finish. Mil a8625f classification type ii sulfuric anodize alloy. Mila8625 anodic coatings for aluminum and aluminum.
Overview of anodizing in the aerospace industry a s the aerospace industry demands more from the materials it uses, the finishing of the surface becomes a greater part of the final product. Fused salt oxidizing treatments of milc16173 military. As a frame of reference, however, 2024 aluminum base metal has a hardness in the range of 6070 rockwell b, where type iii anodize has a hardness of 6070 rockwell c. Unless otherwise specified, coating will be sealed. State of jefferson upper receiver limited edition upper. Use references to procedures and forms in the manual as placeholders for your companys existing documents.
Oxa natural anodizing oxa is a natural aluminium anodizing treatment in conformity with mila8625 type ii and iso 7599 standards. Hardcoat anodize or simply hard anodize is a dense anodic coating of aluminum oxide applied by converting a properly cleaned and deoxidized aluminum alloy component into an oxide film using a suitable electrolyte, typically sulfuric acid cooled to nearly freezing, and applied voltages upwards of 100 volts at an applied current density of 2436. Delete milc81706 chemical conversion materials for coating aluminum and aluminum alloys. I i i coatingtype i coating height mgft2 i 1 and ib 200 minimum ic1 200minimum 700maximum i ii minimum iib 200m10imum maxlnfum i j coatingweightsover 700mgft2 may be used if speclfled. This is a nonarchitectural finish and is nearly obsolete due to environmental considerations. Type ii and 116 coatings shall be the result of treating aluminum and a,lum. This milspec covers the requirements for electrochemicallyformed anodic coatings on aluminum and aluminum alloys for nonarchitectural applications.
Design and application guide for anodizing aluminum. It is a thin gray film that is not as corrosion resistant as sulfuric acid anodize. Mila8625f is the military specification that establishes the requirements for anodizing and sealing processes used for military components ref. Hard coat anodizing services mila8625 type 3 aluminum. Anodic coatings for aluminum and aluminum alloys this amendment forms a part of mil a8625f, dated 10 september 1993, and is approved for use by all departments and agencies of the department of defense. Anodic coatings for aluminum and aluminum alloys 10 sep 1993, this specification covers the. Trivalent chromium process tcp as a sealer for mila. Alternatives to dichromate sealer in anodizing operations. Metal salt sealants should not be used on items that will be panted. This document is available in either paper or pdf format. It provides details, methods, and procedures for these various coatings. Lusterless high solids polyurethane topcoat advantages. Mila8625 type iii class i and ii, ams 2469, and finish 7. Mila8625 aluminum anodic coatings mila8625 is the military specification for anodic coatings for aluminum and aluminum alloys.
Anodising increases resistance to corrosion and wear, and provides better adhesion for paint primers and glues than bare metal does. Limited edition laser engraved we the people state of jefferson upper the buffalo is proud to be the only person making these. Mil mila8625f amendment 1 anodic coatings for aluminum and aluminum alloys. Aluminum is ideally suited to anodizing, although other nonferrous metals, such as magnesium and titanium, also can be anodized. 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. Anoblack ec meets mila8625, type ii, class 2 for black sulfuric anodize and has been approved by major aerospace manufacturers for space vehicle applications where emissivity and the ability to withstand high temperatures are both critical. Mila8625 specifies a test for abrasion resistance to accommodate these challenges. Nadcap is an industrymanaged approach to conformity assessment that brings together technical experts from both industry and government to establish requirements for accreditation, accredit suppliers and define operational program requirements. Mila8625 aluminum, copper, steel, stainless steel, titanium, chromium, nickel mila8625f, military specification. Chemical conversion coatings play an important role as a coatingalone or for its enhanced adhesion properties. Comes complete with forward assist and ejection port cover installed.
Chem film, hex chrome free mil dtl5541, type ii b 921 8081 anoplates anochem tcp nonhex chrome bearing chrome, decorative qqc320, class 1 b 456 1456 actually nickel with thin chrome overlay chrome, hard qqc320, class 2 2406 b 650 6158. Overview of anodizing in the aerospace industry pdf free. Not measurement sensitive i p41la8625f 10 september 1993. Mila8625f type ii class 2 black, blue, red mila8625f type iib class 1. Mils8879 and as8879 specification, as shown in table 1. Anoblack ec coatings will not outgas in vacuum environment applications. Browse the pdf demo mili45208 quality manual opens in new tabpage.
Please note that we are unable to hard anodize 2000 series aluminum due to the high copper content. Mila8625f anodic coatings, for aluminum and aluminum. Mila8625f anodic coatings, for aluminum and aluminum alloys. Delete mil c81706 chemical conversion materials for coating aluminum and aluminum alloys.
Mil a8625f anodic coatings, for aluminum and aluminum alloys. Pdf mil a 8625f this amendment forms a part of mila8625f, dated 10 september 1993. Clean and remove oxidation contamination on surface, followed by treatment with dodp15328d wash primer, e90g4, or chemical pretreat with zinc phosphate. Anodizing is an electrolytic passivation process used to increase the thickness of the natural oxide layer on the surface of metal parts the process is called anodizing because the part to be treated forms the anode electrode of an electrolytic cell.
Main properties of natural anodizing corrosion resistance the oxa layer protects the base material from corrosion withstanding 336 hours of exposure to salt mist according to the requirements of the mila8625. This report documents evaluations of trivalent chromium compositions tcp as sealers for mila8625f type ii, iib, and ic anodic coatings conducted from march 2001 through december 2007 by materials engineering, air4. Military specification anodic coatings for aluminum and aluminum alloys this amendment forms a part of mil a8625f, dated 10 september 1993, and is approved for use by all departments and agencies of the department of defense. A teflon hardcoat will also lower the coefficient of friction, up to 50% lower than that of hard anodizing, making it more slippery. They meet milprf85285e type i, class h composition and performance 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. This document comes with our free notification service, good for the life of the document. The mili45208 inspection system quality manual is a standalone document. Class i anodize coatings are the only finishes that carry a warranty. Base materials that mila8625 anodize type iii hard coat anodizing can be applied include 1100, 3000, 5000, 6000, and 7000 series aluminum alloys. Clear anodize is available in both class i and class ii.
727 1134 140 1251 478 1505 846 340 295 107 638 64 865 456 94 1579 1130 871 1065 838 1369 159 1510 843 559 290 623 167 316 419 1283 88 1256 227 68