Engineered metals
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Cu OFE
CUIVRE - CuC2

Chemical composition

Cu99.99

Pb0.005 max

O0.0005 max

*Unified Numbering System (USA)

Cu-OFE is a high-purity, oxygen-free copper, that does not contain elements that can vaporise in a vacuum environment.

It is very thermally and electrically conductive and it also performs extremely well during hot and cold forming.

Cu-OFE is corrosion-resistant, especially against atmospheric influences and water, and is also insensitive to stress corrosion cracking.

Cu-OFE is a popular material in electrical engineering, vacuum engineering and the production of high-frequency cables.

Physical properties		Units
Density (20°C)	8,94	Kg/dm³
Melting point	1083	°C
Longitudinal elasticity modulus	127	GPa
Thermal conductivity		W/m·K
Electrical conductivity	58	m/Ω·mm²
Electrical resistivity	<0.017241	µΩ·m
Linear expansion Coefficient	17	10⁻⁶·K⁻¹
IACS (International Annealed Copper Standard)	100	%
Poisson's ratio

1 poor | 2 average | 3 good | 4 very good | - no info

Heat Treatment / Hardening
Annealing temperature	350	°C
Temperature for stress relief treatment	150-200	°C
Hardening temperature		°C
Hardening treatment time		hour(s)

Cu OFE
Possible hardness range	75 - 125	HV
Possible Rm range	225 - 360	MPa

Grade	Hardness (HV: Vickers) min - max	Rm (MPa) min - max	Rp 0.2 (MPa) min - max	Elongation (%) where L0 = 100mm min - max	L0
R200	40 - 65*	200 - 250	≤ 100*	≥ 42	50
R220	40 - 65*	220 - 260	≤ 140*	≥ 33	50
R240	65 - 95*	240 - 300	≥ 180	≥ 8	50
R290	90 - 110*	290 - 360	≥ 250	≥ 4	50
R360	≥ 110*	≥ 360	≥ 320	≥ 2	50

Do not hesitate to ask us for your specific grades and parameters. We can make productions according to your needs.