Typical Applications Welding electrode materials: resistance welding electrode caps, MIG welding conductive nozzles, etc Conductive materials for high-speed rail: contact wires, switch contacts, conductors, etc Other applications: thermal conductivity molds such as casting crystallizers
Chemical composition

Copper Cu	Margin	Wt%
Chromium Cr	0.5~1.5	Wt%
Zirconium Zr	0.02~0.2	Wt%
Iron Fe	≤ 0.1	Wt%
Silicon Si	≤ 0.1	Wt%
Fe	Max0.6	Wt%

Physical performance

Melting point	1080	° C
Density	8.9	g/cm3
Conductivity	80	% IACS
Thermal conductivity k	322	W/m/k
Thermal expansion coefficient	17.3	μ M/m/° C
Elastic modulus	117	Gpa

Mechanical properties

Status	Bar specification (mm)	Tensile strength (MPa)	Yield strength (MPa)	Elongation rate (%)	Hardness (HRB)
R510	Φ 7-20	≥ 510	≥ 480	≥ 8	≥ 83
R400	Φ 20-100	≥ 400	≥ 300	≥ 13	≥ 75