Thanks, that's very valuable information. Yes, it does come into contact with water. As a matter of fact, it will be permanently submerged. But wear resistance is not an issue.302 is an austenitic grade very similar to 304 (generically known as 18/8). Hopefully you have 302L (for low carbon) this allows for more heating and welding without creating chromium carbides which could have a negative effect on corrosion resistance. Doe this come into contact with water and that's why it was chosen? It's not a particularly hard material in case you need wear resistance as well.