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Long term corrosion of 416 SS in a medical device

We are developing a medical product that contains bronze, anodized aluminum, and 416 ss parts. The 416 components are passivated prior to assembly. All the components are dipped in 70% isopropyl alcohol ⇦ on eBay or Amazon [affil link] (IPA) prior to assembly. Once assembled, the assembly is wiped with 70% IPA, allowed to air dry. The assembly is packaged in a PETG tray with tyvek lid and heat sealed. It is then Gamma irradiated to sterilize. Is there any chance the 416 will rust during the 5 year life of the package? It's a medical device so the storage conditions are pretty benign.

Walt Philipson
product designer - Palm Beach Gardens, FL, USA
February 6, 2009

Walt,
Given that the sealed package will keep the part perfectly dry, I would not expect any chance of developing rust.

Ray Kremer
Stellar Solutions, Inc.

McHenry, Illinois

February 12, 2009

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