Gemet 817, ENiCrCoMo-1
AWS/SFA 5.11: ENiCrCoMo-1, EN/ISO 14172: ENi6617
NiCr22Co12Mo, DIN: 1736 ENiCr21 Co12Mo, UNS: W86117
Nickel base basic coated electrode, with an alloyed core wire depositing weld metal having about 22 Cr-10 Co-9 Mo-55 Ni. The weld metal has excellent resistance to corrosion and high temp oxidation in the range 800° C to 1150° C. The electrode can be used in positional welding and meets radiographic quality requirements.
WELD METAL ANALYSIS (RANGE) %
MECHANICAL PROPERTIES (RANGE)
• Rebaking: 1 hour at 250° - 300°C.
• Joints to weld must be clean, exempt from grease, cracks.
• Guide electrodes with a slight declination, weld with a short arc and prevent a high heat input by applying the stringer bead technique (weaving max. 2 times core wire diameter)
• Nickel base alloys are welded without preheating and a interpass temperature <150°C. For repair welding of steels with high carbon content a preheating between 200 - 500°C has to be applied. A post weld heat treatment can be performed without influence on the weld deposit