Nihonweld NT-NiCrFe-6 / NM-NicrFe-6 description: NT-NiCrFe-6/NM-NiCrFe-6 is used for cladding steel with nickel-chromiumiron weld metal and for joining steel to nickel-base alloys using the GTAW and GMAW processes. The weld metal will age harden on heat treatment.