Summary for zinc mat coating Discussion
Zinc mat coating is the key question in this short thread: Bülent Esin asks what kind of Zn plating is meant by a drawing callout for a metal clip when the customer specifies “zinc mat.” The reply warns that the term is ambiguous and could mean either “zinc material” or a matte, non-shiny zinc finish. The answerer explicitly advises not to guess, since the wording is not clear enough to define a plating requirement with confidence. The practical takeaway is that the customer or drawing issuer should be asked to clarify the intended finish, thickness, or specification before processing the part. This avoids applying the wrong zinc coating based on an uncertain term.
Q. I have a technical drawing for metal clip. Our customer wants for surface treatment “zinc mat”. Could you please tell me what kind of Zn plating is required?
BÜLENT ESIN
Manufacturer of metal clip – Bursa, Turkey
March 24, 2008
A. It could mean “zinc material”, or “matte zinc (not shiny). Sorry, Bulent — but please don’t guess! Good luck.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com – Pine Beach, New Jersey
Need quick confidential answers? $25
Need project assistance? $100/hr.
March 22, 2008
A. The simple solution is to ask your customer what he wants, preferably to some well known spec like an AMS or MIL spec.
There is a fair possibility that what he is looking for would be spelled “matte” meaning a semi flat appearance vs a bright shiny one.
James Watts
– Navarre, Florida
March 25, 2008