Shouldn't there be minimal variance though? We're not just talking SS "wire" here. We're talking 316L SS wire, which is a pretty specific makeup. Whelp, before just making claims, I did google it. "316L" Fe, <0.03% C, 16-18.5% Cr, 10-14% Ni, 2-3% Mo, <2% Mn, <1% Si, <0.045% P, <0.03% S That's a 2.5% variance on carbon, a whopping 4% variance on Nickel. So yeah, we're dealing with potentially very different TCR curves on any steel it seems like. I think the solution is we need better TCR curves. My SS build seems to read quite consistently. It has a very regular climb in resistance as it's heat goes up. So I just need to correct the values. I wonder if I could contact the vendor I got the SS from for a more specific data sheet on what it's composition is.