ASTM B449-93 PDF

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We get a small commission for maintaining their links, so we can keep them perpetually current July 21, Q. Thank you for your help. Hi, Karl. Those specs are somewhat similar, but I do not think there is any claim that they are "technically equivalent".

But even if you do, I'd suggest that you not certify compliance to a spec you don't have on hand. Good luck. Thank you for your answer.

Not sure my question was to the point. Thank you. Hi again Karl. Yes, a rough correspondence between what comprises class 2 vs. Luck and regards,. It is included in our internal testing matrix, but none of our customers require it and I can not find it in MIL-C, so I would like to remove it from monthly testing. Anyone know? I don't believe coating wt. We test coating wt. It might be worth getting your customers to waive or except the requirement in writing, assuming your coupons are passing the SS test.

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. Greg, it sure looks like it is available from ASTM at: www. I can vouch that their pdf delivery works well at least on my computer, it did Lee Gearhart metallurgist - E.

Aurora, New York Ed. July 22, A. Regards, Ted Mooney, P. Luck and regards, Ted Mooney, P. October 9, A. Joe Roter - Chatsworth, California, U. S October 11, A.


Aluminum Chromate Conversion Coatings

The chromate process provides a clear iridescent to slightly golden iridescent film of low contact resistance. The corrosion performance of our aluminum chromate conversion coating is consistent with that of traditional hexavalent processes and is largely a function of the specific alloy that the aluminum chromate conversion coating is applied to. Aluminum chromate conversion coatings improve the corrosion resistance of wrought, heat treatable and cast aluminum alloys while providing an excellent base for subsequent painting or powder coating services. 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.


Chromate Conversion Coating

Chromate Conversion Coating also commonly referred to as Chemical Film, Chem Film, Alodine or Iridite converts the surface properties of the substrate typically aluminum or magnesium as compared to plating which applies a coating onto the surface of the substrate. Chromate provides excellent corrosion resistance, is conductive and results in no measurable buildup 0. Chromate conversion coatings are the most widely used coating for corrosion protection of Aluminum and Aluminum alloys minimizing surface oxidation. It is commonly used for an undercoat for paint or adhesive applications due to the excellent bonding properties it provides. Class 1A coatings give maximum corrosion protection with the highest electrical surface resistance while class 3 coatings have lower corrosion protection and provide lower electrical surface resistance. Both Hexavalent and Trivalent films at DFI have passed initial hour salt spray testing and are subject to monthly hour salt spray testing as well as paint adhesion testing conforming to all specifications. It compares favorably with the hexavalent coatings providing a conversion coating that fulfills the corrosion, paint and electrical requirements of the different specifications.


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We get a small commission for maintaining their links, so we can keep them perpetually current July 21, Q. Thank you for your help. Hi, Karl.


Aluminum Conversion Coating


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