Alloy 25 Strip TH04 (C17200) – High Strength, Superior Conductivity Copper Alloy
Materion Brush Performance Alloys’ Alloy 25 strip provides the highest strength of any copper alloy, with electrical conductivity considerably greater than other high strength copper alloys. Since it is heat treated after forming, it provides excellent formability and ductility. This alloy features good stress relaxation resistance and high fatigue strength.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 23.0 °C | 8.36 g/cm³ |
Dimension
| Property | Value |
|---|---|
Thickness | 0.05 - 4.77 mm |
Width | 1.27 - 406.5 mm |
Mechanical
| Property | Temperature | Value |
|---|---|---|
Elastic modulus | 23.0 °C | 131 GPa |
Elongation | 23.0 °C | 1 - 6 % |
Hardness, Vickers | 23.0 °C | 373 - 446 [-] |
Tensile strength | 23.0 °C | 1310 - 1520 MPa |
Yield strength Rp0.2 | 23.0 °C | 1130 - 1420 MPa |
Thermal
| Property | Temperature | Value |
|---|---|---|
Coefficient of thermal expansion | 23.0 °C | 1.75E-5 1/K |
Melting point | 870 °C | |
Thermal conductivity | 23.0 °C | 105 W/(m·K) |
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | 23.0 °C | 6.2E-6 - 7.8E-6 Ω·m |
Specific Electrical conductivity | 22 - 28 % IACS |
Chemical properties
| Property | Value | Comment | |
|---|---|---|---|
Beryllium | 1.8 - 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 pressure sensor bellows, burn-in and test socket contacts, computer processor socket contacts, and electromagnetic shielding gaskets. | |
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