Resistance Copper

Resistance Copper is specially selected for consistent resistivity and carefully processed in order to provide a high-quality, cost-effective resistance wire.

Available in sizes down to 0.1 mm.

Physical and Mechanical Properties

UnitsValue
Maximum continuous operating temperature in air°C300
°F572
Nominal composition%Cu > 99.9
Density at 20°Cg/cm³8.9
lb/in³0.321
Resistivity at 20°CµΩcm1.73
Ω/cmf10.4
Temperature Coefficient of Resistance, 20–200°C1/K0.00393
Coefficient of thermal expansion, 20 – 300°C1/K18 x 10^6
1/°F10 x 10^6
Thermal conductivity at 20°CW/mK400
Btu.in/ft².h.°F2825
Specific heat capacity at 20°CkJ/kgK0.386
Btu/lb°F0.09
Melting point (approx.)°C1150
°F2102
Typical Tensile strength - annealed *N/mm²220
lb/in²32000
Typical Tensile Strength – fully cold worked *N/mm²385
lb/in²56000
Typical Elongation at break - annealed *%³ 25
Modulus of Elasticity (tension) at 20°C – annealedN/mm²117000
lb/in²17 x 10^6
Modulus of Rigidity (torsion) at 20°C - annealedN/mm²44000
lb/in²6.4 x 10^6

The figures given in these tables represent nominal or typical values.

Information contained within this technical data sheet is based upon the general experience of Scott Precision Wire Ltd and is believed to be correct at the time of issue.

No warranty is given or is to be implied from the details above.

Customers are advised to carry out independent tests in order to determine the suitability of any Scott Precision Wire Ltd product for an application.