Filler metal for hard soldering of two or multiple parts of heat exchanger, exhaust recycling radiator or fuel cell, and for material-conclusive joining of two or multiple parts of high-grade steel, has composition with casual impurities

摘要

The filler metal has a composition with casual impurities and liquidus temperature of less than 1200 [deg] C. The composition is FeaNiresidueCrbMocCudSieBfPg. a : 0-50 atom%; b : 5-18 atom%; c : 0.2-3 atom%;d=0.5-5 atom%; e : 4-15 atom%; f : 4-15 atom%; and g : 0-6 atom%. An independent claim is also included for a method for positive joining of two or multiple parts, which involves making available a cast consisting of the composition and manufacturing an amorphous ductile filler metal foil by rapid gazing of the cast on a cooling surface.