OK 92.78 SMAW Type Basic-special E C NiCu 1 Description OK 92.78 is a nickel-copper electrode of the monel-alloy type for welding all types of cast iron with or without low preheat. The weld metal is easily machinable and produces a colour very similar to that of cast iron. Welding current AC, DC+ - OCV 45 V Classifications EN ISO 1071 E C NiCu 1 Typical all weld metal composition, % C Si Mn Ni Cu Fe 0.7 <0.2 0.9 64 32 3 Typical mech. properties all weld metal Tensile strength, MPa 300-350 Elongation A5, % 15 Hardness (HB): 150
