Alloy 290 TM02 (C17200)

Alternative and trade names
Alloy 290
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Description

Materion Performance Alloys, Alloy 290 strip provides the highest strength of any mill hardened copper alloy, with electrical conductivity considerably greater than other high strength copper alloys. This alloy features good stress relaxation resistance and high fatigue strength.

Related Standards

This material data has been provided by Materion Brush GmbH.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

PropertyValueTemperature

Density

8.36 g/cm³

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23.0 °C

Dimension

PropertyValue

Thickness

0.05 - 0.9 mm

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Width

1.27 - 406.5 mm

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Mechanical

PropertyValueTemperatureComment

Bendability 90°, bw

0 [-]

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23.0 °C

for strip with 0.20mm and thinner.

Bendability 90°, gw

0 [-]

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23.0 °C

for strip with 0.20mm and thinner.

Elastic modulus

131 GPa

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23.0 °C

Elongation

14 %

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23.0 °C

min., for strip thicker than 0.10 mm

Tensile strength

820 MPa

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23.0 °C

min.

Yield strength Rp0.2

95 - 115 MPa

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23.0 °C

Thermal

PropertyValueTemperature

Coefficient of thermal expansion

1.75E-5 1/K

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23.0 °C

Melting point

870 °C

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Thermal conductivity

105 W/(m·K)

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23.0 °C

Electrical

PropertyValueTemperature

Electrical resistivity

6.2E-8 - 1.01E-7 Ω·m

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23.0 °C

Specific Electrical conductivity

17 - 28 % IACS

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Chemical properties

Property

Beryllium

1.8 - 2.2 %

Cobalt

0.2 %

min. Nickel + Cobalt

Copper

Balance

Iron

0.6 %

max., Nickel + Cobalt + Iron

Nickel

0.2 %

min. Nickel + Cobalt

Technological properties

Property
Application areas

Typical applications include high reliability spring contacts for battery contacts, audio jack contacts, and board to board contacts.