Alloy 625 is used for the welding of Inconel® alloy 625, Incoloy® alloy 825, Inco® alloy 25-6MO, and other molybdenum-containing stainless steels. This filler metal is also used for surfacing of steel, for welding nickel steels, and for welding various corrosion-resistant alloys such as alloy 20. The weld metal of Alloy 625 has high strength over a broad temperature range and has exceptional corrosion resistance, including resistance to localized attack such as pitting and crevice corrosion. Alloy 625 is useful for many dissimilar joints involving Inconel® and Incoloy® alloys, carbon steels, low-alloy steels, and stainless steels.
| AWSClassification | UNSNumber | Weight Percent | ||||||||||||||
| C | Mn | Fe | P | S | Si | Cu | Ni | Co | Al | Ti | Cr | Nb(Cb) Plus Ta | Mo | |||
| ERNiCrMo-3a | N06625 | 0.10 | 0.50 | 5.0 | 0.02 | 0.015 | 0.50 | 0.50 | 58.0min | 0.40 | 0.40 | 20.0-23.0 | 3.15-4.15 | 8.0-10.0 | ||