Nsn a national stock number nsn is a thirteen digit number uniquely identifying a single government part designation. Im looking like many others for a nonchromate replacement for the mil c 5541 link is to free spec at defense logistics agency, dla. The trivalent chromium process tcp provides a non hexavalent chrome coating compliant with rohs, elv and weee directives. Mil dtl 5541 type i specifies hexavalent chromium bath while mil dtl 5541 type ii is normally achieved with a trivalent chromium bath. Pdf mil c 5541 mil dtl 5541 mil a8625 mil c 26074 mil f18240. Mil c 26074c 3 my les5 military specification this specification ie approved for we by all departfmnta and agencie8 of the oapartmmt of defense.
The chemical conversion coatings are of the following types. Iso 8081 has long accounted for nonhexavalent chrome processes. This specification covers treated aluminum core material for structural sandwich. Chemical conversion coating mildtl5541 aluminum coatings. Milc5541 chem corrosion resistant coating aerobase group.
Mil c 5541 mil dtl 5541 show complete document history. Chemical film per mil c 5541 class 3, gold chemical film per mil dtl 5541 class 3, type ii, clear black. 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. 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 mil a8625, type ii, class 2. Chromate leaves no measurable buildup, but provides excellent corrosion resistance. Milc5541e chemical conversion coatings on aluminum and aluminum alloys. The military specification referred to as mildtl5541, military specification, chemical. Iridite mil c 5541 mil dtl 5541 class 3 ams2474 astm b449 class 3 7. Materials should conform to mil c 5541, mil dtl 5541, mil c 81706. Techmetals ensures quality in our metal finishing specifications for a wide variety of industrial coatings.
Chromate conversion coating for highvolume runs of aluminum parts. Mil c 5541f, chemical films, chromate iridite, aluminum 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. Finish specifications cross reference this chart is an approximate reference only. There are definitely a couple of tricks to passing mil dtl5541f, type ii, class 1a for al 2024, and they apply to type i, also. Mildtl5541 chemical conversion coatings on aluminum and. Aluminum chromate conversion coatings, often referred to as chemical film or under the trade names alodine or irridite, produce a thin coating in the range of 0. Aluminum chromate conversion coatings are amorphous in structure with a gellike composition hydrated with. Chemeon tcphf hexavalent free suite of mil spec and military grade chemistries meet or exceed and comply with mil dtl81706. Enter your mobile number or email address below and well. Test panels to qualify chem film process to mil c 5541 link is to free spec at defense logistics agency, dla. Military specification this specification ie approved for we.
Read and understand the msds, downloadable below before using this. Mildtl5541 chemical conversion coatings on aluminum. In the united states, either mil c 5541, ams 2473 or ams 2474 are the basis for specification. The format and any coded meanings to the designation are identified and explained in the specification.
Mil mil dtl5541f chemical conversion coatings on aluminum and aluminum alloys superseding mil c 5541e standard by military specifications and standards, 07112006 amendments available view all product details. Iridite, alodine mil c 5541 class 3 mil dtl 5541 type i class 3 ams2474 astm b44993 class 3 7. The specification is approved for use by all departments and agencies of the united states department of defense dod. The mil dtl 5541 specification current revision is mil dtl5541f covers chemfilm aka alodine or chromate conversion on various aluminum alloys.
Chemical conversion coating mil dtl 5541 type 2, class 1a hexavalentfree chrome. The process is called anodizing because the part to be treated forms the anode electrode of an electrical circuit. Mil c 5541 class 3 mil dtl 5541 type i class 3 ams2474 astm b44993 class 3 7. Mil dtl5541f 11 july 2006 superseding mil c 5541e 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. This kind of film usually looks brown or gold, but can be colorless at times. Aluminum chromate conversion coating advanced plating. First, we highly recommend using an allpurpose, nonetch lightmetal cleaner. Anodizing is an electrochemical process used to increase the thickness of the natural oxide layer on the surface of aluminum parts. As noted by kevlatch, the document states section 3. Mildtl5541f chemical conversion coatings on aluminum and. Alodine1200 methods and properties are defined in milc5541f now ams c5541.
Mil c 5541 class 1a provides the heaviest coating, while class 3 is a lighter variation. 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. I still need corrosion protection and also sometimes need corrosion protection paired with electrical conductivity class 3. Click here to download henkel alodine 1200s technical process bulletin. For maximum protection against corrosion, for surfaces to be painted or left unpainted. Dip and spin and chromate conversion coating services. Milc5541 link is to free spec at defense logistics agency, dla. Mil c 5541 mil dtl 5541 type i yellow type ii clear ams2473 astm b449 7. Mil c 5541 chemical conversion coatings components datasheet pdf data sheet free from datasheet data sheet search for integrated circuits ic, semiconductors and other electronic components such as resistors, capacitors, transistors and diodes. Anodizing aluminum increases the corrosion and wear resistance. The darker coatings providing the greatest corrosion protection. Milc5541 class 1a provides the heaviest coating, while class 3 is a lighter variation.
Class 1a chemical conversion coatings are intended to provide corrosion prevention when left unpainted and to improve adhesion of paint finish systems to aluminum and aluminum alloys. This was formerly known as mil c 5541 and is another of our alltime bestselling plating specs. Chemical conversion films on aluminum are specified in accordance with one of several standards. One side of the part is to be processed per milc5541, class 1a, then primed. A print callout might read passivate per mil dtl 5541 type. Mildtl5541f revision f is the latest military spec for chromate conversion coatings on aluminum replacing milc5541e.
Govt designation a government designation is the name or number as assigned in the governing specification document. The chromate process provides a clear iridescent to slightly golden iridescent film of low contact resistance per milc5541 mildtl5541 and astm b44993. Mil c 8514c metal pretreatment wash primer is a twocomponent, zinc chromate pigmented, polyvinyl butryl coating. Aluminum chromate conversion coatings per mil c 5541 mil dtl 5541 and astm b44993 advanced plating technologies no longer offers chromate services. What is alodine chem film chromate conversion coating. Department of defense was the first to use tcphf trivalent chromium, hex free and this trivalent chromate conversion coating has become such an accepted standard that a detailed specification, mil dtl 5541, included it. Another important quality is the ability to heal small scratches due to being soluble. Mil dtl 5541 covers all chemical conversion coatings which are known to create protection through chemical reaction with metals like aluminum and aluminum alloy. The current specification 2009 is mil dtl5541f, which superseded mil c 5541e in july 2006. This was formerly known as milc5541 and is another of our alltime bestselling plating specs. The opposite side is to be processed per milc5541, class 1a, clear coating.
After application, the coating shall be continuous and substantially free from powdery and loose areas. Protects against corrosion, keeps electrical connectivity, great base for paint adhesion. Kevlatch has provided you with some great background on chemfilm. Free pick up and delivery service is also available in most areas, just call ahead to schedule. F chemical conversion coatings on aluminum and aluminum alloys from sai global. Contact ens technology regarding chromate conversion coating mil dtl 5541 today. Chemeon tcphf is environmentally safe and superior trivalent chromate alternative to hexavalent chromates. Trivalent chromium passivation tcpgreen as per milc5541. Although prepared specifically for dod applications, the standard is used for many commercial applications as well. Color can vary from colorless to golden iridescent brown. The coating shall also be free from breaks, scratches, flaws, or other defects that will reduce serviceability or be detrimental to. Type 1 this includes all coatings that have hexavalent chromium. Mil dtl 5541 chemical conversion coatings on aluminum and aluminum alloys. Qpl approved chemistries for chromate conversion chemeon.
Chemical conversion coating mildtl5541 type 2, class 1a hexavalent free chrome. How to pass mildtl5541f for aluminum products finishing. Apr 02, 2009 entire process of rohscompliant chemical conversion process. Iridite chromate conversion coating finish milc5541. This specification covers chemical conversion coatings formed by the reaction. Mildtl5541 show complete document history how to order. Mil c 2252028 crimping tools, terminal, hand or power actuated, wire termination, pneumatic tool for wire barrel sizes 20 through 28. Mil c 5541e chemical conversion coatings on aluminum and aluminum alloys. Chromate conversion coating services in michigan mi on. Chemical conversion coating mildtl5541 type 2, class 1a. Chemical conversion coatings on aluminum and aluminum alloyssuperseding mil c 5541e mil on. But you have to download the spec i dont think you can inspect without it. 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. Chem corrosion resistant coating part number mil c 5541 nsn 8030014510284.
Zinc phosphate coating can be done on parts in thicknesses ranging from 420 micro m, weights up to 1. Mil c 2252024a crimping tools, terminal, hand or power actuated, wire termination. It is a technology, trivalent chromium based, capable of producing a hexavalent chrome free. One of their writeups was that we were using the milc5541 link is to spec a. Welcome to, your premiere source for free downloads of government and military standards, specifications, handbooks, and documents.
A discussion started in 2004 but continuing through 2017. Tool, for lug terminal and external power plug socket contacts, size 2210. Mil c 5541 link is to free spec at defense logistics agency, dla. If youre interested in additional information on mil c 5541 including a link to the document, see thread33229529. Henkel 595833 alodine 1500 conversion coating gallon jug. The military specification referred to as mil dtl 5541, military specification, chemical conversion coatings on aluminum and aluminum alloys covers chemical conversion coatings formed by the reaction of chemical conversion materials with the surfaces of aluminum and aluminum alloys. To maintain compliance with mildtl5541f, applicators must test samples on a monthly basis. In addition to the coating or coating thickness see 6.
Alodine 1500 is listed on the register for qpl mil c 81706 and is approved to be used by methods a and c spray and immersion processing to produce class 3 coatings in accordance with military specification mil c 5541 current issue. Military specification this specification ie approved for. I may download it or mail to me one, i really appreciate it. Mil c 8514c wash primer yellow technical data sheet description. I am trying to find a copy of mil c 5541 link is to free spec at defense logistics agency, dla. Coatings shall be continuous free from powdery areas, breaks, scratches, etc. This document comes with our free notification service, good for the life of the document. It serves as an excellent bond coat to many surfaces including aluminum, galvanized metal, lead, brass, magnesium, and ferrous metals. Mil c 7438g 19 june 1985 i superseding military specification core material,aluminum, for sandwich this specification is approved for use by and agencies of the department of defense mil c 7438f march 1972 construction all departments 1. Metal finishing specifications industrial coatings metal. Chemical conversion coatings on aluminum and aluminum alloyssuperseding milc5541e mil on.
Part number mil c 5541 including related part numbers and nsn starting at page 1. Entire process of rohscompliant chemical conversion process. Mil mil dtl5541f chemical conversion coatings on aluminum and aluminum alloys superseding mil c 5541e standard by military specifications and standards, 07112006 amendments available. Mil dtl 5541 datasheet, cross reference, circuit and application notes in pdf format. Used to protect parts from corrosion and hydrogen embrittlement stress cracking. Clear colorless coating shall only be used when specifically authorized by the procuring activity. Application is by dip, brush, swab, or spray, producing coatings ranging from clear to dark yellow. The coating shall also be free from breaks, scratches, flaws, or other defects that will reduce serviceability or be detrimental to appearance, protective value, or paint bonding characteristics. Mil c 5541e, mil dtl5541f, astm b 44993 2004, ams 2473g, ams 2474d and mil dtl81706b. Nonhexavalent chemical conversion films on aluminum.
Metal finishing specifications industrial coatings. Aluminum chromate conversion coatings aluminum chromate conversion coatings properties. Coatings shall be continuous, free from powdery areas, breaks, scratches, etc. Please use the below content for reference only the chromate process provides a clear iridescent to slightly golden iridescent film of low contact resistance. Alodine 12 methods and properties are applicable to the requirements.
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