Oerlikon Fluxocord 51 description: FLUXOCORD 51 is a seamless copper coated basic flux cored wire suitable for hardfacing of medium hardness in combination with the flux OP 122. FLUXOCORD 51 is used for hardfacing rollers, caterpillar track rollers, wheel flanges, studs. The weld metal is tough and crack resistant. Therefore the welding of a buffer layer is not necessary in general. It is suitable for wear-and-tear parts which are subject to heavy impact. The deposit is machinable by chip forming and flame and inductive hardening are possible.