BM 172HT
UNS C17200RWMA Class 4
Precipitation-hardenable copper-beryllium reaching up to 1,380 MPa tensile strength with 156 W/m·°K thermal conductivity — the reference for plastic molds, subsea connectors, and non-sparking tools.
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Chemical composition
Chemical composition
| Copper | Remainder |
|---|---|
| Beryllium | 1.8–2.0% |
| Cobalt | 0.2–0.4% |
| Nickel | máx. 0.1% |
| Iron | máx. 0.1% |
| Others | máx. 0.5% |
Mechanical properties
Mechanical properties
| Tensile strength | 980–1380 MPa |
|---|---|
| Yield strength | 980–1000 MPa |
| Elongation | 4–5 % |
| Rockwell C hardness | 38–42 |
| Density | 8.30 kg/dm³ |
Informational values. Vary by manufacturing process, geometry, and dimensions.
Thermal & electrical
Thermal & electrical properties
| Electrical conductivity | 28–32 %IACS |
|---|---|
| Thermal conductivity (20 °C) | 150–156 W/m·K |
Available formats
Formats
BilletMachinedPlate
Typical applications
Typical applications
- Plastic mold cavities and inserts
- Blow-mold neck and bottom rings
- Aluminum die-casting injection pistons
- Welding electrodes
- Electrical and electronic components
- Bushings and aeronautical parts
- Subsea telecommunications systems
- Oil extraction equipment
Manufacturing
Manufacturing processes
- Extrusion
- Forging