Copper based filler metal can be divided into four categories: high copper alloy, copper zinc alloy, copper phosphorus alloy and special copper alloy.

Copper zinc alloy filler metal is mainly used for gas flame brazing, high frequency brazing, salt bath immersion brazing,brazing copper, copper alloy, nickel, steel, cast iron, hard alloy, etc.

Cu-P alloy filler metal is based on Cu-P binary alloy and has good fluidity. It is mainly used for brazing copper and copper alloy.Because of high phosphorus content, it can not be used for brazing steel,nickel and its alloy. The wett bility of brazing filler metal will be greatly improved by adding silver into copper phosphorus alloy.

Brand	Equivalent to foreign brand	Composition（%）							Melting temperature	Application	Technical document
		Cu	P	Sn	Zn	Si	O	Other
XR-HS221-T	-	59-61	-	1-2	Balance	0.1-0.5	-	-	870-890	Higher melting point, high strength and good plasticity of joint	MSDS
XR-201	-	≥99.97	-	-	-	-	≤0.003	≤0.003	1080-1085	Mainly used for brazing cast iron	MSDS
XR-CuP2	CN/GB:BCu93P US/AWS:BCu- 2 JP/JIS:BCuP-2	Balance	6.5-7.5	-	-	-	-	-	710-790	Copper and brass parts without shock load and vibration, such as copper and copper joints on refrigerators and air conditioners, are generally brazed	MSDS
XR-HS213	CN/GB:BCu5210 US/AWS:ERCuSn-C JP/JIS:BCu-s	Balance	0.01-0.4	7.5-8.5	-	-	-	-	875-1025	Mainly suitable for steel brazing and for brazing cast iron	MSDS