Typical Applications Welding electrode materials: resistance welding electrodes and support rods, MIG welding conductive nozzles, seam welding wheels
Circuit electrical components: vacuum tubes, microwave tubes, X-ray tubes, electrical relay system components
Rotating equipment components: motor and generator components, high-power electromagnetic windings
Other application areas: medical equipment components, heat exchangers, power cords, etc.
Chemical composition

Copper Cu	Margin	Wt%
Aluminum Al	0.25	Wt%

Note: Al exists in the form of Al₂O₃
Physical performance

Melting point	1083	° C
Density	8.86	g/cm3
Conductivity	87	% IACS
Thermal conductivity k	344	W/m/k
Thermal expansion coefficient	16.6	μ M/m/° C
Elastic modulus	130	Gpa

Mechanical properties

Status	Bar specification (mm)	Tensile strength (MPa)	Yield strength (MPa)	Elongation rate (%)	Hardness (HRB)
M3-440①	Φ 16~65	440~480	410~450	≥ 24	64~74
H5-450②	Φ 7-15	450~550	420~520	≥ 16	70~79
H6-450③	Φ 7-30	450~550	420~520	≥ 16	70~79