Grade		Chemical Composition/%, no more than
		Cu	Ni	Sn	Zn	Mn	Fe	Pb
BSn20-5	C72950	Rem.	20.5～21.5	4.5～5.5	0.5	0.5	0.05	0.05
BSn15-8	C72900	Rem.	14.5～15.5	7.5～8.5	0.2	0.5	0.05	0.05
BSn9-6	C72700	Rem.	8.5～9.5	5.5～6.5	-	0.5	0.05	0.05

 

Grade		Temper	Tensile Strength Rm/MPa	Yield Strength MPa	Elongation A11.3%	Hardness HV
BSn15-8	C72900	1/4H(H01)	500～680	340～500	≥15	150～220
		1/2H(H02)	580～750	500～580	≥6	180～280
		H(H04)	690～900	640～850	≥2	210～320
		EH(H08)	840～1000	790～920	≥1	240～340
		1/4HT	900～1100	780～1000	≥4	290～360
		1/2HT	1000～1200	920～1130	≥2	310～395
		HT	1150～1320	1050～1280	≥1	330～410
		EHT	1220～1400	1150～1350	≥1	360～450

The product has high strength, good workability, heat resistance, corrosion resistance and heat treatment deformation. It can replace beryllium copper and is called environmentally friendly beryllium copper.