I would like to test some techniques for making stainless steel sculpture suitable for outdoor environments (inland).
I have hitherto been working with copper sheet (1-3mm) and would like to use similar processes - that is: formed using hammers and stakes (and soon an English wheel when I've finished it) and TIG welded together. The wheels on the English wheel are made from 4140 and I am going to have them heat-treated hopefully in the range of 40hrc.
I hope to use 1-1.6mm thickness material and I need an alloy that will be soft enough to work cold using the above methods and tools (preferably not requiring frequent high-temp anneals), that is weldable with moderate to good corrosion resistance.
My reading to date is leading me towards 304L or 305. The latter apparently more susceptible to hot cracking after welding, the former more prone to work-hardening.
Any suggestions/comments would be greatly appreciated. Thanks, Leuis.