Chromium bronze is a copper alloy in which 0.4%~1.2% chromium is added to copper and chromium is the main alloy component.The addition of chromium can obviously improve the recrystallization temperature and thermal strength [TJC STEEL]of the alloy, so chromium bronze is widely used as heat-resistant copper alloy in industry.C18200 is the chrome bronze symbol.

 

 Standards:

CHINA	GB/T 5231-2001	QCr1	C18200
	GB/T 5231-2012	TCr1	C18200
AMERICA	MIL-C-19311B-1973	No.182
	ASTM F9-1986	C18200  [TJC STEEL]
GERMANY	DIN CEN/TS 13388:2008	CuCr1	CW105C

 

 Chemicals(%):

GRADE	TCr1	No.182	CuCr1
Cr	0.6~1.2	0.6~1.2	0.5~1.2
Si	≤0.10	≤0.10	≤0.10
Fe	≤0.10	≤0.10	≤0.08
Pb	≤0.05	≤0.05	—  [TJC STEEL]
Cu	Rest	Rema	Rest
Others	≤0.75	—	≤0.20

a：Cu+所列出成分综合≥99.5%

 

 Properties& Characteristics:

(1)The conductivity of solid solution treatment is 45%IACS, after aging treatment, it rises to 80%IACS.

(2)The aging treatment can withstand 400℃ high temperature, [TJC STEEL]which is twice that of cold processed copper.

(3)High strength, high hardness.

 

Applications:

After cold processing and aging treatment, C18200 can significantly improve the strength, thermal conductivity and electrical conductivity. [TJC STEEL]As a double 80 copper alloy with electrical conductivity and hardness, C18200 is widely used in the manufacture of wear-resistant parts under high temperature conductive environment, electrodes in welding industry, high-voltage switch contacts, robot conductive arms, etc..