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what kind of hard coating is this?

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Smashrc

Smashrc

Industrial
Joined
May 30, 2007
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Location
HK
coating_c4xq0x.png


I know this is hard coating on 7075. There are so many kind of hard coating existing. Do you know what kind is it? I see it has some texture on the coating.
 
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Looks like hard coat anodize (sulfuric acid process)in the range of .001-.003" thickness.
 
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