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Clear Zinc Plating Discoloration and Quality Issues

I have several back plates with a Clear Zinc plating. Our quality department is concerned about some of the parts that have spots or discolorations. Are discolorations common with a Clear zinc plating? Where can I find some kind of plating quality standard?

Steven LoForte
3Com - Salt Lake City, Utah, USA
2002

It probably means that either your finish was not done properly or the coating was not uniform or sufficient. Use any of the ASTM standards e.g ASTM B633.

Wish you luck!

Kam Dianatkhah
Lennox - Dallas
2002

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