Sorry for the late response cherwolf, but I have no use for the rod as of now, I'm just trying to identify it.

Thank you guys for all of the responses! I'll look at the rod again for markings, maybe my old eyes missed them. Otherwise, I'm going to ASSUME it's 312 for now. Thanks again
Bob

Hello. I'm a new member and a newbie welder ( if you can call what I do welding ) ! My question is this: I found some Stainless Steel filler rod that was given to me a long time ago. It has no identifying marks on it, but it DOES attract a magnet pretty firmly. I had a note with it that said ER312, ...