plating, anodizing, & finishing Q&As since 1989
Is ASTM B-117 done pre-assembly or post?
I have a client looking for a blind rivet assembly (aluminum body rivet with a zinc dichromate plated mandrel) and is asking for this item to withstand 96 hr salt spray in accordance with ASTM B117 [affil link] . My question is regarding the format of this test and wether it is done pre or post installation?Kevin Kroll
Distributor - Wauconda, Illinois, USA
ASTM B117 [affil link] describes how to build and operate a salt spray chamber. It doesn't talk about performance specifications for a particular part. This is something you will have to resolve with your client, but it doesn't make much sense to me to test before assembly--especially because the riveting process will stretch the coating material and reduce its protective value.
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
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