W240 Copper Alloy
Precision Alloys is a top manufacturer and global exporter of W240 Copper Alloy, a high-strength, copper-nickel-silicon-based alloy designed for critical wear-resistant applications. Known for its combination of exceptional durability, thermal stability, and good electrical conductivity, W240 is ideal for precision welding electrodes, heat transfer systems, industrial dies, and contact assemblies in aerospace, automotive, and electrical manufacturing.
We supply W240 in bars, rods, plates, forged blocks, and CNC-finished components, customized to meet demanding application needs.
What is W240 Copper Alloy?
W240 is a premium CuNiSi (Copper-Nickel-Silicon) alloy engineered to offer superior wear resistance, good thermal conductivity, and moderate electrical conductivity. Its high hardness and stability under elevated temperatures make it ideal for projection welding, die inserts, and electrical contacts, where traditional copper alloys might deform or wear out too quickly.
W240 Copper Alloy Specifications
| Property | Specification |
|---|---|
| Alloy Designation | W240 |
| RWMA Classification | Class 3 / Modified Class 4 |
| Available Forms | Rods, Bars, Electrodes, Forgings, Machined Parts |
| Hardness | Up to 35 HRC / 100–120 HRB |
| Delivery Condition | Precipitation Hardened, Forged, Machined |
| Standards | In-house specs, RWMA, ASTM B624, DIN EN 12163 Equivalent |
W200 Copper Alloy Chemical Composition
| Element | % Composition |
|---|---|
| Copper (Cu) | Balance |
| Nickel (Ni) | 1.0 – 3.0 |
| Silicon (Si) | 0.4 – 1.0 |
| Iron (Fe) | ≤ 0.20 |
| Chromium (Cr) | ≤ 0.10 |
| Others | ≤ 0.10 |
Mechanical Properties of W200 Copper Alloy
| Property | Typical Values |
|---|---|
| Tensile Strength | 580 – 720 MPa |
| Yield Strength | 420 – 560 MPa |
| Hardness | 30 – 35 HRC |
| Electrical Conductivity | 50 – 60% IACS |
| Thermal Conductivity | 180 – 220 W/m·K |
| Density | ~8.85 g/cm³ |
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