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Letter 37001
44 hrs CASS CHROME
[California]
+++++
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, CA
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 info about spec at TechStreet].
 
Ted Mooney, P.E.
finishing.com Inc. - Brick,
NJ
+++++
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 info about spec at TechStreet] -03, SC 5.
Jim Vickers
- Concordville, Pennsyvania, USA
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