Brazier filler metal superior in corrosion resistance and heat resistance and EGR cooller brazed with said brazing filter metal

摘要

A first brazing filler metal is composed of 20-30 wt% Cr, 3-10 wt% P, 2-7 wt% Si, and remainder Ni. It may be incorporated with another brazing filler metal composed of 10-15 wt% Cr, 7-12 wt% P, and the remainder Ni in an amount of 2-15 wt%. A second brazing filler metal is composed of 18.5-29.7 wt% Cr, 3.1-10.3 wt% P, 1.7-6.9 wt% Si, and the remainder Ni. The present invention also provides an exhaust gas recirculation system cooler brazed with any of the above brazing filler metals.