This specification describes chromate conversion coatings and their reactions with aluminum alloys. This specification covers chemical conversion coatings formed by the reaction of chemical conversion materials with the surfaces of aluminum and aluminum alloys. Iridite chromate conversion coating finish milc5541. Cncl ss by milc5541 complete reprint w not format details price pdf. Most backordered items can be rushed in from the publisher in as little as.
A summary of chromating services per the astm and mil specs is as follows. Configurations include plug bodies with premounted cable adaptors, or plug bodies and adaptors can be ordered separately. Milc5541 class 1a provides the heaviest coating, while class 3 is a lighter variation. Environmental engineering considerations and laboratory tests 31jan2019 65 mb newest spec added to collection. Chemical conversion coatings on aluminum and aluminum alloys. Electroless nickel plating an overview electroless nickel plating is offered by advanced plating technologies in both type iv medium phosphorous 69% p and type v high phosphorous 1014%. Good results can also be achieved on type 356 aluminum castings. Mildtl5541 and the ways in which our chemical conversion coatings can assist you in your next project, or for a detailed price analysis request a quote today. Below is a list of specifications that are most often provided by techmetals. Qpl approved chemistries for chromate conversion chemeon. Mila8625 mil spec 1st treatment response overall or milc. Military standards milstd, military specifications mil spec.
As specified on drawing color is a dull gray, approaching black. Chemical film metal surface coatings valence surface. Aluminum chromate conversion coatings are amorphous in structure with a gellike composition hydrated with. Anodize in accordance with mila8625, type ii, chemical surface treat in accordance with milc.
This specification covers chemical conversion coatings formed by the reaction. Standardization documents are developed and used for products, materials, and processes that have multiple applications to promote commonality and interoperability among the military departments and the defense agencies and between the united states and its allies, and to limit the variety of items in the military supply system. The specification is approved for use by all departments and agencies of the united states department of defense dod. Mila8625 mil spec 1st treatment response body or milc5541 mil spec 2nd treatment response body surface treatment specification.
Complete document chemical conversion coatings on aluminum and aluminum alloys. We also offer metal plating solutions to additional specifications such as ams, mil, astm, sae and customer specifications. The official site of the defense standardization program. Mildtl81706b 25 october 2004 superseding mildtl81706a 18 february 2002 detail specification chemical conversion materials for coating aluminum and aluminum alloys this specification is approved for use by all departments and agencies of the department of defense. Aluminum chromate conversion coatings aluminum chromate conversion coatings properties.
Click here to download our military plating specification sheet. Color can vary from colorless to golden iridescent brown. Mil mil dtl5541f chemical conversion coatings on aluminum and aluminum alloys superseding mil c5541e standard by military specifications and standards, 07112006 amendments available. Milc26074c 3 my les5 military specification this specification ie approved for we by all departfmnta and agencie8 of the oapartmmt of defense. November 30, 1990 chemical conversion coatings on aluminum and aluminum alloys. Alloy steel nosepieces and stainlesssteel draw screws. Although prepared specifically for dod applications, the standard is used for many commercial applications as well. Milc5541 mildtl5541 type i yellow type ii clear ams2473 astm b449 7.
Aluminum chromate conversion coating advanced plating. Nsn a national stock number nsn is a thirteen digit number uniquely identifying a single government part designation. The military specification referred to as military specification, chemical conversion. Mil dtl5541f 11 july 2006 superseding mil c5541e 30 november 1990 detail specification chemical conversion coatings on aluminum and aluminum alloys this specification is approved for use by all departments and agencies of the department of defense. Surpassing over 15,000 test panels it outperforms existing trivalent and hexavalent alternatives in wear and corrosion resistance without requiring additional topcoats while being more economical in cost per application. Although mildtl5541 has been superseded by more recent specifications, it still remains a specification approved by all agencies and departments in the us department of. Aluminumalloy body finish options include chemical film per milc5541 and rohs compliant black nickel. Metal finishing specifications industrial coatings. Iridite, alodine milc5541 class 3 mildtl5541 type i class 3 ams2474 astm b44993 class 3 7. The chemical conversion coatings are of the following types. Chemical film coatings are gelatinous films which provide some sort of a barrier medium to retard corrosion on aluminum surfaces and enhance adhesion of subsequent coatings such as paints and primers.
Military specification this specification ie approved for. Chem corrosion resistant coating part number milc5541 nsn 8030014510284. Welcome to, your premiere source for free downloads of government and military standards, specifications, handbooks, and documents. Sponsored links speed downloads mil c 5541 trusted download 1500 kbs 10 310 mil c 5541 highspeed download 1200 kbs 5 945 mil c 5541 full download kbs 1 290 68 p misc accy mila8625, type ii, class 2. Mildtl5541f 11 july 2006 superseding milc5541e 30 november 1990 detail specification chemical conversion coatings on aluminum and aluminum alloys this specification is approved for use by all departments and agencies of the department of defense. Type i compositions containing hexavalent chromium. Iridite milc5541 mildtl5541 class 3 ams2474 astm b449 class 3 7. Coatings shall be continuous free from powdery areas, breaks, scratches, etc.
From mildtl5541f chemical conversion coatings on aluminum and aluminum alloys 3. This is created through the chemical conversion substance reaction with aluminum and its alloys. When we do our monthly testing of chromate per milc5541 link is to free spec at defense logistics agency, dla. Mildtl5541 chemical conversion coatings on aluminum. The electroless nickel phosphorous content affects the properties of the deposit significantly including hardness, corrosion resistance and magnetism. Mildtl81706 milc5541 class 3 rohs thermalloy milc5541 astm b 117 citizen aavid thermalloy c554 aavid catalog text. Milc5541 chem corrosion resistant coating aerobase. The current specification 2009 is mildtl5541f, which superseded.
Conversion coatings for aluminum meets requirements of military specifications. Govt designation a government designation is the name or number as assigned in the governing specification document. The trivalent chromium process tcp provides a non hexavalent chrome coating compliant with rohs, elv and weee directives. The format and any coded meanings to the designation are identified and explained in the specification. Chromate leaves no measurable buildup, but provides excellent corrosion resistance. Qqz325 ty 2 cl 3 fed spec 1st treatment response mandrel or qqp416 fed spec 2nd treatment response mandrel or milp16232 ty z cl 2 mil spec 3rd treatment response mandrel or milp16232 ty z cl 4 mil spec 3rd. Contact our expert staff for more information on milspec. The best results are achieved on wrought alloys machined billet aluminum alloys. Mildtl5541 is a military specification related to conversion coatings. Aluminum chromate conversion coatings per milc5541 mildtl5541 and. Milspec hardware specification hinge, butt, structural, extruded.
Unless otherwise specified in the contract or order, substitutions of either type i for type ii, or type ii for type i coatings are not permitted. Aluminum alloy 2024t3511, per qqa2003, op aluminum alloy 7075t73511, per qqa20011 see part numbering. I am trying to find a copy of milc5541 link is to free spec at defense logistics agency, dla. Henkel bonderite aero chromate coating mcr 1201 skygeek. The current specification 2009 is mildtl5541f, which superseded milc5541e in july 2006. This was formerly known as milc5541 and is another of our alltime bestselling plating specs. Electroless nickel plating per milc26074, astm b733, ams. Defense standardization program specifications and standards. Mil c5541e, mil dtl5541f, astm b 44993 2004, ams 2473g, ams 2474d and mil dtl81706b. It shall approximate color plate 37038 of fed std no. Part number milc5541 including related part numbers and nsn starting at page 1. The military specification referred to as mildtl5541, military specification, chemical conversion coatings on aluminum and aluminum alloys covers. Find the most uptodate version of mildtl5541 at engineering360.
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