EN 12163 Grade CuSn5 R540 – High-Performance Copper Tin Alloy for Precision Tubes
Material CuSn5, mat. No. CW451K is used in the form of tubes for manometer springs or hose tubes as well as for contact springs and connectors. Basically the same application area as CuSn6 (CW452K). CuSn5 shows slightly higher electrical conductivity at slightly lower strength due to the lower tin-content. For the electrolytically tinned strip the coatings (Sn bright, Sn matt, Sn fuzed, SnPb) are listed by the application (better solderability, better corrosion resistance, reduction of the electrical contact resistance, better appearance) in the DIN EN 14436 : 2004-11 (Table 5)
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 8.85 - 8.9 g/cm³ |
Mechanical
| Property | Temperature | Value |
|---|---|---|
Elastic modulus | 20.0 °C | 120 GPa |
Elongation A10 | 20.0 °C | 6 % |
Elongation A100 | 20.0 °C | 5 % |
Poisson's ratio | 20.0 °C | 0.34 [-] |
Tensile strength | 20.0 °C | 540 MPa |
Yield strength Rp0.2 | 20.0 °C | 480 MPa |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 23.0 °C | 1.5E-5 - 1.9E-5 1/K | Typical for Leaded Phosphor Bronze |
Specific heat capacity | 20.0 °C | 380 J/(kg·K) | |
Thermal conductivity | 20.0 °C | 96 W/(m·K) |
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical conductivity | 20.0 °C | 1.00E+7 S/m |
Specific Electrical conductivity | 17 % IACS |
Chemical properties
| Property | Value |
|---|---|
Iron | 0.1 % |
Lead | 0.02 % |
Nickel | 0.2 % |
Phosphorus | 0.01 - 0.4 % |
Tin | 4.5 - 5.5 % |
Zinc | 0.2 % |
Metal
- EN 12163 CuZr TH Grade – High Strength Low‑Alloy Copper Alloy
- EN 12163 Grade CuBe2 M: High-Performance Hardenable Copper Alloy
- EN 12163 Grade CuZn10 M – High-Strength, Corrosion-Resistant Copper Alloy
- EN 12163 CuZn40 M: High-Performance Unhardenable Wrought Copper Alloy
- EN 12163 Grade CuNi1Si R540: High-Performance Copper Alloy with Superior Conductivity & Corrosion Resistance
- EN 12163 CuZn40Mn2Fe1 (R540) – Premium Unhardenable Copper Alloy with Superior Corrosion Resistance
- EN 12163 CuSn5 R330 – Premium Copper–Tin Alloy for Manometer Springs & Contact Springs
- EN 12163 Grade CuSn5 R390 – High-Performance Copper Tin Alloy for Industrial Applications
- EN 12163 Grade CuSn5 R460 – High-Performance Copper Tin Alloy for Precision Tubes
- EN 12163 Grade CuNi12Zn24 R540 – High-Strength, Corrosion-Resistant Copper Alloy