Letter 33090

Adhesion testing of printed characters on anodize  

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With regards to ASTM D 3363-00 Pencil Test. Is that test valid for testing adhesion of characters pad printed on an anodized metal surface? My impression is that the test is for a smooth painted surface only.

If there is a more preferred method for testing adhesion of characters printed on a surface, I'm all ears.

Thanks,

Bill Nibley
Manufacturing - Simi Valley, CA, USA

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