Copper based brazing filler metal is based on copper, mainly Cu-Zn filler metal and Cu-P filler metal. The typical brand H62 of copper and zinc solder can be used for flame brazing, high-frequency brazing and dip brazing. It can be used to brazing copper, copper alloy, cast iron and steel. When the zinc content is more than 40%, the performance becomes brittle. Cu-P solder consists of two kinds of Cu-P eutectic solder and Cu-P-Ag filler metal. Cu--P eutectic solder has good fluidity and is widely used in brazing copper and copper alloys, but it is not suitable for brazing steel. It is usually used for contact brazing, gas flame brazing, http://www.rhhjcl.com high frequency brazing and furnace brazing. Cu-P-Ag solder has good electrical conductivity, and its brittleness is smaller than Cu-P eutectic. It is widely used in motor manufacturing. In addition, there are copper germanium and copper based high temperature solder. Pure copper is also widely used as a filler metal, which can be used for brazing and vacuum brazing of low carbon steel and low alloy steel.

The 1.Cu-Zn kind of brazing material, BCu54Zn, is mainly used in argon arc welding of copper alloy and the surfacing of steel.

2.Cu-Zn-Mn (Co/Ni) class L05, L106, L801, HL841, HL852 are mainly used for brazing of hard alloy tools.

3.Cu-Ni-Mn class Cu64MnNi, BCu84MnNi with good fluidity and good plasticity, is mainly used for brazing of high temperature and high strength workpiece.

4.Cu-Si class BCu97SiMn and BCu96SiMn are mainly used for brazing of high temperature and high strength workpiece.

5.Cu-Mn-Fe and Cu-Sn class Cu92FeMn and Cu93Sn are mainly used in the brazing of steel in the furnace.

6.Cu-P class L203, L204, L205, L209 are mainly used for brazing copper alloy, BcuP6-4, BCu80SnPAg brazing temperature is low, fluidity is good.