Oerlikon Fluxocord 43.1 description: FLUXOCORD 43.1 is a seamless copper coated basic flux cored wire for submerged arc welding with OERLIKON welding flux OP 121TT (DC+ or AC) (or evt OP 121TTW) for applications in boiler, apparatus and pipe-line construction when the weldments have to be normalised after welding. The requirements concerning the mechanical and technological properties of the welding joint are fulfilled in the normalised condition as well as inthe air hardened condition. The necessary heat treatment depends on the base material. The weld metal deposited by FLUXOCORD 43.1 has not been designed for use in either the as welded nor stress relieved condition.