ENI 426

AWS/ASME SFA - 5.11	ENiCrMo-6
EN ISO 14172	E Ni 6620 (NiCr14Mo7Fe)

Ni-Cr-Mo-based basic coated electrode depositing a Ni-Cr-Mo-Nb-W alloy weld metal. It provides high performance for welding 9% Ni steels used in cryogenic applications such as LNG tanks (X8Ni9, ASTM A353, ASTM A553, JIS G3127 SL9N). The weld metal delivers high impact toughness down to -196°C, ensuring reliable performance under cryogenic conditions.In sulfur-free environments, the weld metal is resistant to scaling (oxidation) up to 1200°C, while in sulfur-containing environments it can be used at temperatures up to 500°C. In addition to stress corrosion cracking resistance, it offers excellent resistance to pitting and similar forms of corrosion in phosphoric acid, organic acid, seawater, and highly contaminated environments. It also provides high resistance to cracking and thermal shock.It can be used with AC polarity to prevent or reduce magnetic arc blow. It is suitable for welding different stainless steels, various nickel alloys, or for joining low-alloy steels to stainless steels or nickel alloys. Moreover, it can be safely employed for buffer and cladding passes on steels with low weldability and for repair welding of these alloys.