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Standard for black trivalent chromate

Yellow Chromate Plating is Ep-Fe/Zn5/CM2-3 Can you explain to me if Trivalent black what is the chemical name (Ep-Fe/Zn5/.........

A.Mustaffa Bin Abd Hamid
consumer product - Gurun, Kedah, West Malaysia
2004

finish: ep-fe/zn5/cm2(6cr-free) what is meaning

akib malik
- gurgoun haryana India
October 28, 2009

October 28, 2009

Hi, gentlemen. Can you please reference what standards writing body (ISO, ASTM, JS, BS, etc.) and what standard you are referring to?

Trying to determine the meaning of a string of numbers and letters without that context reminds me of crime novels where the dieing victim scrawls a number on the wall in his own blood and the detective spends the next 250 pages trying to figure out its meaning :-)

Good luck.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

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