Oerlikon Fluxocord 41.1 description: FLUXOCORD 41.1 is a seamless copper coated basic flux cored wire for submerged arc welding with the OERLIKON welding flux OP 121TT (evt OP 121TTW) (DC+ or AC) 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 in the air hardened condition. The necessary heat treatment depends on the base material. The weld metal deposited by FLUXOCORD 41.1 has not been designed for use in either the as welded nor stress relieved condition. For higher strength level in weld metal FLUXOCORD 43.1 is recommended. For sour service applications with Ni<1.0% FLUXOCORD 41.1N is recommended.