Summary for immunize finish Discussion
The focus keyphrase "immunize finish" comes up in a question about a drawing that calls for "IMMUNIZE" on 303 stainless steel, and the asker wants to know whether it means the same thing as passivation. Tim Carpenter asks the question, and the reply says it apparently does, citing an older comment by Milt Stevenson in another thread. However, the answer also notes that the term seems old-school, unfamiliar to the responder, and not found elsewhere on the site. Because of that uncertainty, the practical advice is to have the buyer update the drawing rather than rely on the obscure term. The thread does not provide a formal specification or standard for "IMMUNIZE," only a cautious interpretation that it likely refers to passivation.
Q. We have a current drawing that shows the finish as “IMMUNIZE”. The material is 303 stainless steel. Is IMMUNIZE the same as Passivate?
Tim Carpenter
QA Manager – Rancho Cordova, California
December 12, 2019
A. Hi Tim. Apparently! At least so said Milt Stevenson in thread 39665.
But you’ve never heard of it, I don’t recall ever having heard the term, Milt called it old-school in his posting from 13 years ago, and the term appears nowhere else on this site … so I’d suggest that the buyer consider updating the drawing 🙂
Regards,
Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com – Pine Beach, New Jersey
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December 2019