Hobart SubCOR SL 735 5W description: SubCOR SL 735 5W is a specially formulated cored wire intended for single or two-run submerged arc welding using 5 wires. The wire chemistry of SubCOR SL 735 5W provides amounts of micro-alloys specifically selected for the total number of wires used to best counteract the formation of coarse microstructures. This promotes good impact toughness, even when welding on thick materials at high travel speeds and deposition rates. Hobart recommends using this wire the following flux(es): SWX 130, SWX 135.