BrushForm® 158 TM16 Strip – High‑Performance Copper‑Nickel‑Tin Alloy for Voice Coil Motors
Materion’ BrushForm® 158 Strip is a high-performance, heat treated spinodal copper nickel tin alloy designed to provide optimal formability and strength characteristics. In TM16 it provides excellent flatness and stiffness coupled with high resistance to vibration, fatigue and impact loading. This makes it ideal for voice coil motor springs in optical image stabilization systems.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 23.0 °C | 9 g/cm³ |
Dimension
| Property | Value | Comment |
|---|---|---|
Thickness | 0.03 mm | min. |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 23.0 °C | 128 GPa | |
Elongation | 23.0 °C | 1 % | for strip thicker than 0.10 mm |
Hardness, Vickers | 23.0 °C | 375 - 450 [-] | |
Poisson's ratio | 23.0 °C | 0.3 [-] | |
Tensile strength | 23.0 °C | 1400 - 1510 MPa | |
Yield strength Rp0.2 | 23.0 °C | 1365 - 1462 MPa |
Thermal
| Property | Temperature | Value |
|---|---|---|
Coefficient of thermal expansion | 23.0 °C | 1.64E-5 1/K |
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical conductivity | 23.0 °C | 4.00E+6 S/m |
Specific Electrical conductivity | 7 % IACS |
Magnetic
| Property | Temperature | Value |
|---|---|---|
Relative magnetic permeability | 23.0 °C | 1.01 [-] |
Chemical properties
| Property | Value |
|---|---|
Copper | Balance |
Nickel | 14.5 - 15.5 % |
Tin | 7.5 - 8.5 % |
Technological properties
| Property | ||
|---|---|---|
| Application areas | Conductive spring applications such as electronic connectors, switches, and sensors as well as voice coil motor springs in optical image stabilization systems. | |
Metal
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