Alloy 174 (C17410) TH02 Strip – High‑Yield Copper‑Beryllium for Automotive & Electronics
Materion Performance Alloys’ Alloy 174 strip is a mill hardened copper beryllium strip alloy designed for use in the Automotive, Appliance, and DataCom/TeleCom markets. It provides high yield and fatigue strength with high electrical conductivity and good resistance to stress relaxation. Typical applications include high reliability automotive terminals and spring contacts for switches and relays.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 23.0 °C | 8.8 g/cm³ |
Dimension
| Property | Value |
|---|---|
Thickness | 0.05 - 2 mm |
Width | 1.27 - 406.5 mm |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Bendability 90°, bw | 23.0 °C | 0.5 [-] | for strip with 0.25mm and thinner. |
Bendability 90°, gw | 23.0 °C | 0.5 [-] | for strip with 0.25mm and thinner. |
Elastic modulus | 23.0 °C | 138 GPa | |
Elongation | 23.0 °C | 10 - 20 % | |
Fatigue strength | 23.0 °C | 515 - 585 MPa | 10⁸ cycles R=0 (Unidirectional) |
Hardness, Vickers | 23.0 °C | 180 - 230 [-] | |
Tensile strength | 23.0 °C | 665 - 790 MPa | |
Yield strength Rp0.2 | 23.0 °C | 550 - 690 MPa |
Thermal
| Property | Temperature | Value |
|---|---|---|
Coefficient of thermal expansion | 23.0 °C | 1.76E-5 1/K |
Melting point | 1020 °C | |
Thermal conductivity | 23.0 °C | 230 W/(m·K) |
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | 23.0 °C | 2.9E-6 - 3.8E-6 Ω·m |
Specific Electrical conductivity | 45 - 60 % IACS |
Chemical properties
| Property | Value |
|---|---|
Beryllium | 0.15 - 0.5 % |
Cobalt | 0.35 - 0.6 % |
Copper | Balance |
Technological properties
| Property | ||
|---|---|---|
| Application areas | Typical applications include high reliability automotive terminals and spring contacts for switches and relays. | |
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