Stainless....maybe it is possible and affordable?

http://www.mig-welding.co.uk/

FCAW - Flux Cored Arc Welding-Mig Welding
Flux is contained within the electrode. It provides shielding, deoxidization & arc stabilization. Additional shielding may be added. A smoke suction nozzle around the gun or fume hood aids in reduction of smoke & fumes. Aufhauser flux cored stainless steel wire is formulated to provide all position welding & smooth, stable arc action.

http://www.hobartwelders.com/products/wirefeed/handler140/

http://www.harborfreight.com/cpi/ctaf/Category.taf?f=bylogo&logourl=ChicagoW.gif&brand=Chicago%20Electric%20Welding%20Systems