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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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CASS and Chrome Plating

Hi,

Q. I have a customer specified for 44 hours CASS Chrome finish with #400 grits. Can you let me where can I get the specs for 44 hrs CASS CHROME finish.

JACK LYNN
METCOR INDUSTRIES, INC. - WALNUT, California
2005

A. CASS means copper-accelerated salt spray. So this is not a spec for the plating, but is a spec for the accelerated corrosion testing which the plating must survive. Look into spec ASTM B368.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2005

A. If you are looking for a chrome plating spec that meets the 44 hours CASS test, try to get General Motors spec GM4374M. it is published with GM4372M and GM4373M. Also ASTM B456, SC 5.

Jim Vickers
- Concordville, Pennsylvania, USA
2005

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