Yes, Manslick is right. Stainless Steel is sort of a catch-all for all kinds of alloys. Some are designed to live in an all-water environment, others in a dryer one. It has to do with whether oxygen is expected to reach the metal. SS for air applications is expected to get wet, but not stay wet. Therefore air hitting it is necessary to keep it stainless. Underwater, it will rust. Underwater S/S is just the opposite. It's better underwater. Some SS is more heat resistant--think of Cuisinart cookware. Other SS is designed to hold an edge, like Buck and Spyderco knives.

And some are for motorcycles! (What do your ride, swimlane? I have 2 Yams, an '02 FZ1 and an '04 FJR)

Carl