ASTM B921 PDF

Find the most up-to-date version of ASTM B at Engineering Standard Specification for Non-hexavalent Chromium Conversion Coatings on Aluminum and Aluminum Alloys. Active Standard ASTM B | Developed by. Start. Standard ASTM standard ยท ASTM B Subjects. Metallic and Inorganic Coatings; Metal Powders and Metal Powder Products (ASTM VOL ).

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Non Hexavalent Chromium Conversion (Clear)

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AnoChem TCP should be applied where conductivity, paintability or corrosion resistance are required on aluminum substrates. But the fact is that the traditional yellow color was never a dye; it was the inherent color of the hexavalent chromium toxin. AnoChem TCP is an excellent solution for the following applications: All information presented is for general reference and does not represent a professional opinion nor the policy of an author’s employer.

Anoplate, maintains its own inhouse salt-spray test chamber and its own electric resistivity test equipment. Please login to your authorized staff account to use this feature. If you like to setup a quick demo, let us know at support madcad.

FORMAT Single User Subscription Site License Subscription BOOKS All Books PACKAGES All Packages EDITION to PUBLISHER. Xstm does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory requirements prior to use.

The color produced is not homogenous as you would expect from a dye, but is astn for an inspection aid. Traditional hexavalent chromium right has its characteristic gold iridescence. This abstract is a brief summary of the referenced standard. AnoChem TCP left has a clear, bright finish with a blue iridescence and should not be mistaken that the part is untreated.

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ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. Anoplate will be closed December 24th, 25th, 31st and January 1st. Enter your account email address qstm request a password reset: Films are normally applied by dipping, but may also be applied by inundation, spraying, roller coating, or by asfm techniques.

Abstract This specification covers the requirements relating to rinsed and non-rinsed non-hexavalent chromium conversion coatings on aluminum and aluminum alloys intended to retard adtm as a base for organic films including paints, plastics, and adhesives; and as.

AnoChem TCP replaces hexavalent chromate conversion coatings used for aluminum alloys without sacrificing corrosion resistance, electrical contact resistance or organic topcoat adhesion properties while meeting regulatory requirements of ROHS, WEEE and ELV legislation.

It is clear, very thin, and cannot be dyed. This is the only non-hex process that meets the MIL spec, and so I suspect that your vendor switched to this, and I have no reason to question your vendor’s statement.

ASTM B921 – 08(2018)

Coatings shall adhere to specified electrical resistance, adhesion, and corrosion resistance requirements. I don’t think you need to give up on ASTM compliance, but should consider getting away from the gold colored dye. Films are normally applied by dipping, but may also be applied by inundation, spraying, roller coating, or by wipe-on techniques.

Regards, Ted Mooney, P.

Non Hexavalent Chromium Conversion (Clear)

Sorry, I don’t have a copy of ASTM B handy so I cannot interpret what it says, and what finishes might comply with it, and whether they can be dyed yellow. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application.

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Many plating shops want to switch to TCP, so I think it will be ever harder for you to continue to make your parts look like they are carcinogenic when they are not: Print 1 2 3 4 5 page sstarting from page current page. It is a trivalent chromium conversion process. We have complaints from both the DoD and the FAA that their inspectors cannot tell if the Non-hex chromate clear conversion coating is on the metal or not.

Are you sure you want to empty the cart? I have just checked today with several chem. Both impart a clearly visible blue color to the trivalent chromate conversion coating and do not reduce salt spray testing hours. Link to Active This link will always route to the current Active version of the standard.

Coatings are categorized into four classes according to corrosion protection and finish. Remember me for one month. This may be what your vendors have switched to. Coatings are categorized into four classes according to corrosion protection and finish.

Thanks for the response. Can you define “TCP”. None add yellow to their product. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. This process is almost colorless and cannot be dyed.

AnoChem TCP is an excellent solution for the following applications:. It’s not possible to diagnose a finishing problem or the hazards of an operation via these pages. Click here to download full list of books. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use.