Hi all,
I've been testing some zinc die casting parts that were chrome plated 3 years ago.
Requirement is 240 hours as per ASTM B 117-03 and results are not good. Cr & Ni layer thickness have been found Ok.
If salt spray test is considered as an accelerated ageing process, is there any max delay for making these tests since coating is applied?
I've been testing some zinc die casting parts that were chrome plated 3 years ago.
Requirement is 240 hours as per ASTM B 117-03 and results are not good. Cr & Ni layer thickness have been found Ok.
If salt spray test is considered as an accelerated ageing process, is there any max delay for making these tests since coating is applied?