Engineered metals
for precision industries

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Cu ETP
CUIVRE - CuA1

Chemical composition

Cu99.9

Pb0.005 max

O0.005-0.04

*Unified Numbering System (USA)

Cuivre pur standard avec un taux d'oxygène maximum de 0.04 %

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	>55	m/Ω·mm²
Electrical resistivity	<0.0188	µΩ·m
Linear expansion Coefficient	17,7	10⁻⁶·K⁻¹
IACS (International Annealed Copper Standard)	>95	%
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)

Ne pas utiliser d'hydrogène pour les traitements thermiques car risque d'explosion avec l'oxygène résiduelle

Cu ETP
Possible hardness range	60 - 130	HV
Possible Rm range	225 - 380	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.