ERNiCrMo-4 is a high-performance nickel-chromium-molybdenum (Ni-Cr-Mo) filler metal (AWS A5.14) used for welding similar alloys (like Alloy C-276) and dissimilar metals (nickel alloys, stainless steels, carbon steels) in severely corrosive environments, offering excellent resistance to pitting, crevice corrosion, and stress corrosion cracking, especially in acidic conditions, making it ideal for chemical processing, oil & gas, and power plants.
Key Characteristics:
Composition: Primarily Nickel (Ni), Chromium (Cr), Molybdenum (Mo), with some Iron (Fe) and Tungsten (W).
High Molybdenum: Its significant Mo content (around 15-17%) is crucial for resisting aggressive reducing acids and halides.
Corrosion Resistance: Exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking in harsh media, including seawater and strong acids.
Versatility: Used for welding, surfacing, and cladding, often for dissimilar joints where conventional materials fail.
Typical Applications:
Chemical Processing: Reactors, piping, heat exchangers handling corrosive substances.