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"Yellow Bleach Lacquer ZN" -- is it Trivalent or Hexavalent.

August 4, 2009

What does it means " Yellow Bleach Lacquer ZN " ?
Is it trivalent or hexavalent.

Regards,

Sunil Zore
buyer - Pune, India

Hi, Sunil. It means very little, an in-house shorthand perhaps meaning zinc plating followed by yellow chromating followed by leaching the color out, followed by a dip in water soluble lacquer... perhaps. It says nothing about trivalent vs. hexavalent.

It sounds like you may be reading a catalog for some kind of standard part and then trying to represent to others the specifications of the finishing. This is very dangerous. If the end user needs a specific finish, you unfortunately have no choice but to go back to the source and get a certification to that effect. Good luck.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
August 4, 2009

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