Weldcote White Anti Borax Flux is a brazing powder flux that is active in the temperature range 1400-2200?F/760-1205?C. It is used for brazing brass, bronze, copper , steel, stainless steel, malleable iron and heat-resistant alloys. Anti Borax flux promotes deep penetration of the filler metal in the joints, resulting in high bond-strength. It dissolves and removes oxides rapidly and thoroughly with a minimum of bubbling, keeping impurities and porosity out of the joints . Package of 1