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EN 12166 CuNi2Si R640 – High-Performance Wire for Springs & Fasteners

Application: general purpose wire, springs, fasteners

Properties

General

PropertyTemperatureValue

Density

20.0 °C

8.8 - 8.88 g/cm³

Mechanical

PropertyTemperatureValue

Elastic modulus

20.0 °C

130 - 143 GPa

Elongation

20.0 °C

8 - 10 %

Elongation A100

20.0 °C

3 - 6 %

Elongation A11.3

20.0 °C

5 - 8 %

Elongation A50

20.0 °C

8 %

Poisson's ratio

20.0 °C

0.34 [-]

Tensile strength

20.0 °C

540 - 640 MPa

Yield strength Rp0.2

20.0 °C

590 MPa

Thermal

PropertyTemperatureValue

Coefficient of thermal expansion

300.0 °C

1.6E-5 1/K

Specific heat capacity

20.0 °C

377 J/(kg·K)

Thermal conductivity

20.0 °C

67 - 200 W/(m·K)

Electrical

PropertyTemperatureValue

Electrical conductivity

20.0 °C

1.00E+7 - 2.60E+7 S/m

Specific Electrical conductivity

34 - 45 % IACS

Chemical properties

PropertyValue

Iron

0.2 %

Lead

0.02 %

Manganese

0.1 %

Nickel

1.6 - 2.5 %

Silicon

0.4 - 0.8 %


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