ASTM B197 Grade C17300 TF00

Alternative and trade names
Alloy M25 (C17300) Wire
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Description

Alloy M25 from Materion Performance Alloys is a free machining, high performance copper alloy. M25’s properties minimize signal distortion in coaxial RF connectors and reduce power loss in circular connectors and contact probes. M25 is available in spooled or coiled wire product forms, and in different tempers to accommodate diverse design requirements. After machining and forming operations, M25 parts can be easily heat treated and plated to obtain maximum mechanical and electrical performance. Applications requiring stability to 175° C or reliable contact force in miniaturized designs specify Alloy M25. In demanding electronic applications, M25 provides performance and reliability superior to any free machining copper alloy.

Related Standards

Equivalent Materials

This material data has been provided by Materion Brush GmbH,MakeItFrom.com.

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

PropertyTemperatureValue

Density

23.0 °C

8.36 - 8.8 g/cm³

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Dimension

PropertyValueComment

Diameter

0.76 - 12.7 mm

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Smaller diameter wire may be produced by wire redrawers.

Mechanical

PropertyTemperatureValue

Elastic modulus

23.0 °C

120 - 131 GPa

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Elongation

23.0 °C

2 - 25 %

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Tensile strength

23.0 °C

620 - 1260 MPa

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Yield strength

23.0 °C

1150 MPa

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Yield strength Rp0.2

23.0 °C

510 - 730 MPa

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Thermal

PropertyTemperatureValue

Coefficient of thermal expansion

23.0 °C

1.6E-5 - 1.75E-5 1/K

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Melting point

870 °C

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Specific heat capacity

23.0 °C

410 J/(kg·K)

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Thermal conductivity

23.0 °C

105 - 110 W/(m·K)

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Electrical

PropertyTemperatureValue

Electrical resistivity

23.0 °C

6.2E-6 - 7.8E-6 Ω·m

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Specific Electrical conductivity

22 - 28 % IACS

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Chemical properties

PropertyValueComment

Aluminium

0 - 0.2 %

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Beryllium

1.8 - 2 %

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Cobalt

0.2 %

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min. Nickel + Cobalt

Copper

95.5 - 97.8 %

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Balance

Iron

0 - 0.6 %

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max., Nickel + Cobalt + Iron

Lead

0.2 - 2 %

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Nickel

0.2 - 0.6 %

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min. Nickel + Cobalt

Other

0 - 0.5 %

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Silicon

0 - 0.2 %

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Technological properties

Property
Application areas

Coaxial RF connectors and circular connectors and contact probes. This alloy to be fabricated into contacts for electronics, aircraft and automotive applications.

General machinability

60% (vs. free-cutting brass)