1)Copper based brazing material are divided into four types:high copper alloy , copper zinc alloy,copper phosphorus alloy and special copper alloy.
2)Cooper zinc alloy solder is mainly used for gas flame braze welding,high frequency welding,salt bath dip brazing copper,copper alloy and nickel,steel,cast iron and hard alloy.
3)The copper phosphorus brazing alloy is mainly used for brazing of copper and copper alloys.Due to high phosphorus contained,it can not be used for brazing of steel,nickel and its alloys.The addition of silver in the copper phosphorus alloy can greatly increase the wettability of the solder.