CuNi3Si Copper Alloy
CuNi3Si
- ENCW112C
- ENCuNi3Si1Mg
- DIN2.0857
- UNSC70250
Precipitation-hardening nickel-silicon copper alloy. A beryllium-free alternative offering good strength, hardness and electrical / thermal conductivity.
01Material Properties
- Beryllium-free
- Precipitation hardened: ~180–230 HB
- Electrical conductivity ~40–50 % IACS
- Good thermal conductivity
- Good wear resistance and machinability
02Applications
- Resistance welding electrode holders and arms
- Plastic injection mold cores and cooling components
- Connectors and spring contacts
- Continuous casting mold components
- High-strength conductive parts
03Delivery Condition
- Precipitation-hardened rod and plate (TH04 / solution treated + aged).
04Heat Treatment
Typical values
- Solution treatment
- 900–950 °C; water quench
- Ageing
- 450–500 °C, 2–3 h
- After ageing
- ≈ 180–230 HB
- Electrical conductivity
- ≈ 40–50 % IACS
- Delivery condition
- Solution treated + aged (TH04)
Heat treatment cycle (schematic)
Ageing diagram (approximate)
Values are approximate and for information only; they vary with section size, heat and furnace conditions. Binding values are determined from the manufacturer’s data under laboratory conditions.
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