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 [SCALE STEEL]of the alloy, so chromium bronze is widely used as heat-resistant copper alloy in industry.C18200 is the chrome bronze symbol.
CHINA GB/T 5231-2001 QCr1 C18200
GB/T 5231-2012 TCr1 C18200
AMERICA MIL-C-19311B-1973 No.182
ASTM F9-1986 C18200 [SCALE STEEL]
GERMANY DIN CEN/TS 13388:2008 CuCr1 CW105C
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 — [SCALE STEEL]
Cu Rest Rema Rest
Others ≤0.75 -- ≤0.20
(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, [SCALE STEEL]which is twice that of cold processed copper.
(3)High strength, high hardness.
After cold processing and aging treatment, C18200 can significantly improve the strength, thermal conductivity and electrical conductivity. [SCALE 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..