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44 hrs CASS CHROME

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Hi,

I have a customer specified for 44hrs 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

August 11 +++++

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 B-368 [link is to spec at TechStreet].

Ted Mooney, P.E.
finishing.com
Brick, New Jersey

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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 [link is to spec at TechStreet] -03, SC 5.

Jim Vickers
- Concordville, Pennsyvania, USA

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