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JIS Specifications

Investment Casting
　 Tolerance of Copper
　 Alloy Castings

Centrifugal Copper Alloy
　 Casting Dimensions

JIS Specifications

Specification of Brass

Symbol	Working temp	Chemical composition (%)						Tensile strength(kg/mm2)	Elongati rate(%)	Hardnes (Brinell)
Symbol	Working temp	Cu	Zn	Pb	Sn	Al	Fe	Tensile strength(kg/mm2)	Elongati rate(%)	Hardnes (Brinell)
YBsC1	1120	83.0~88.0	11.0~17.0	0.5~	Sn + Al + Fe 1.0			15~	25~	45~55
YBsC2	1000	65.0~70.0	24.0~34.0	0.5~3.0	~1.0	~0.5	~0.8	20~	20~	44~60
YBsC3	1000	58.0~64.0	30.0~41.0	0.5~3.0	~1.0	~0.5	~0.8	55~	15~	120~

Specification of High Tensile Strength Brass

Symbol	Chemical composition (%)							Impurities
Symbol	Cu	Zn	Mn	Fe	Al	Sn	Ni	Pb	Si
HBsC1	55.0~60.0	33.0~42.0	0.1~1.5	0.5~1.5	0.5~1.5	~1.0	~1.0	~0.4
HBsC1C	55.0~60.0	33.0~42.0	0.1~1.5	0.5~1.5	0.5~1.5	~1.0	~1.0	~0.4
HBsC2	55.0~60.0	30.0~42.0	0.1~3.5	0.5~2.0	0.5~2.0	~1.0	~1.0	~0.4	~1.0
HBsC3	60.0~65.0	22.0~28.0	.25~5.0	2.0~4.0	3.0~5.0	~0.5	~0.5	~0.2	~1.0
HBsC4	60.0~65.0	22.0~28.0	.25~5.0	2.0~4.0	5.0~7.5	~0.2	~0.5	~0.2	~1.0

Symbol	Tensile strength	kg/mm2) Elongation	rate(% Hardnes (Brinell)
HBsC1	44~	20~	108
HBsC1C	45~	25~
HBsC2	50~	18~	140
HBsC3	65~	15~	150~230
HBsC4	77~	12~	150~230

Specification of Bronze

Symbol	Chemical composition (%)						Tensile strengthkg/mm2)	Elongation rate(%)	Hardnes (Brinell)
	Cu	Sn	Zn	Pb	Ni	Fe
BC1	79.0~83.0	2.0~4.0	8.0~12.0	3.0~7.0	~1.0	~0.35	17~	15~
BC1C							20~	15~
BC2	86.0~90.0	7.0~9.0	3.0~5.0	1.0以下	~1.0	~0.2	25~	20~	68
BC2C							28~	15~
BC3	86.5~89.5	9.0~11.0	1.0~3.0	1.0以下	~1.0	~0.2	25~	15~	73
BC3C							28~	13~
BC6	82.0~87.0	4.0~6.0	4.0~6.0	4.0~6.0	~1.0	~0.3	20~	15~	59
BC6C							25~	15~
BC7	86.0~90.0	5.0~7.0	.3.0~5.0	1.0~3.0	~1.0	~0.3	22~	18~	69
BC7C							26~	15~

Specification of Phosphor Bronze

Symbol	Chemical composition (%)					Tensile strength kg/mm2)	Elongatio rate(%)	Hardnes HB(10/100)
	Cu	Sn	P	Ni	Zn,Pb
PBC2	87.0~91.0	9.0~12.0	0.05~0.20	~1.0	~ 0.3	20~	5~	60~
PBC2B			0.15~0.50			30~	5~	80~
PBC2C			0.05~0.50			30~	10~	80~
PBC3B	84.0~88.0	12.0~15.0	0.15~0.50		~0.3			90~
PBC3C			0.05~0.50			30~	5~	90~

Purpose of High Tensile Strength Brass

Symbol	Casting Method	Purpose
HBsC1	sand casting	Suitable for high pulling force and the corrosion resistance : always uses in the propeller of ship (including the merchantman and warship), the protecting cover of propeller , the base of bearing, valve seat , the valve lever, the accessories of ships or other general components and so on
HBsC1C	sand casting
HBsC2	sand casting
HBsC3	sand casting	Suitable for the extra-heavy pulling force, extremely abrasion resistance : always used in the support plate of bridge, the bearing, the cap nut, the screw, the gear, abrasion resistance board, the slide, the turbine wheel
HBsC4	sand casting

Purpose of High Aluminum Bronze

Symbol	Casting Method	Purpose
AlBC1	sand casting	Suitable for high physics hardness : always used in the acid proof components, the gear, the roller of paper making machine
AlBC1C	sand casting	Suitable for high physics hardness, anti-corrosive, abrasion resistance : bears the abrasion: always used in propeller of ship the gear, the bearing, the bushing, the valve seat , the security tool and so on
AlBC2	sand casting
AlBC3	sand casting	Suitable for large casting of high physics hardness, anti-corrosive, abrasion resistance: f always used in the propeller, the socket, the fan, the gear, chemistry industrial machine parts and so on
AlBC4	sand casting

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