SAF Nertalic 625 description: NERTALIC 625 is used for welding of highly corrosion-resistant Cr-Mo-Nickel base alloys such as alloy 625, alloy 825 and similar alloys. Also suitable for molybdenum alloyed corrosion-resistant steels with e.g. 7% Mo as X1NiCrMoCuN25-20-7 and cold-tough nickel steels. In sulphur-free atmospheres the weld metal is non-scaling <1200C, in sulphurous atmospheres the weld metal can be used <500C. Thermal expansion coefficient between austenitic and ferritic steels, therefore this wire electrode is also suited for joining ferritic to austenitic steels (dissimilar) with operating temperatures or postweld heat treatment >300C. Also used for the cladding of steels.