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Effect of temperature on hard anodize

Q. Do you have any ARTICLES/STUDIES on the effect of temperature on the hardness of Type III Hard Anodize Aluminum? I'm interested on Temperature ranges of 120 on through 500 F.

Bill Milla
Anodizing Shop - Huntington Beach, California, USA
2004

A. Sheasby and Pinner say, "...fine cracks may be observed at 80 - 100 C.......cracking is caused by the low coefficient of expansion of the anodic film which is approximately 0.2 times that of the metal..."

Robert H Probert
Robert H Probert Technical Services

Garner, North Carolina

2004

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