MouldMet270
Copper Nickel Silicon
Characteristics:
It is a high-performance alloy with low nickel and silicon content. It is precipitation hardened, offering high strength, hardness, good electrical conductivity, excellent wear resistance, and superior formability. It is an ideal substitute for beryllium copper alloys.
Typical applications:
It is mainly used for cores and inserts in blow molding and injection molding molds, as well as die parts in die casting.
Standardization and composition
| UNS | / |
|---|---|
| EN | / |
| JIS | / |
| GB | / |
| Cu | 90.0-98.5% |
| Si | 0.4-2.0% |
| Ni | 1.0-5.0% |
| Other | 0.01-3.0% |
Physical properties①
| Density (g/cm³) | 8.8 |
|---|---|
| Electrical conductivity (%IACS) | 40 |
| Thermal conductivity (W / m x K) | 180 |
| Coefficient of thermal expansion② (10-6/K) | 18 |
| Modulus of elasticity (GPa) | 130 |
Note①：The testing temperature is 20℃.
Note②：The testing temperature range is 20℃ to 300℃.
Fabrication Properties
| Capacity for being cold worked | Good |
| Capacity for being hot formed | Good |
| Resistance welding | Fair |
| Machinability rating③ | 30% |
Note③：C36000 = 100%
Mechanical Properties④
| Temper | Diameter (mm) | Tensile Strength (MPa min.) | Yield Strength (MPa min.) | Elongation (% min.) | Hardness (HV5 min.) |
|---|---|---|---|---|---|
| TH04 | 10 Ф ≤ 30 | 800 | 700 | 10 | 250 |
| TD04 | 10 Ф ≤ 30 | 600 | 500 | 10 | 170 |
Note④：bedra technical standards
Dimension Tolerance and Delivery Form
| Straight bar | ||||
| Diameter (mm) | Tolerance⑤ (mm) | Ovality (mm) | Length (mm. max.) | Straightness (mm/m max.) |
| 3.0 ≤ Φ 10 | 0.04 | 0.020 | 2500 | 0.5 |
| 10 ≤ Φ 16 | 0.05 | 0.025 | 3600 | 0.5 |
| 16 ≤ Φ 25 | 0.10 | 0.040 | 3600 | 0.8 |
| 25 ≤ Φ 35 | 0.15 | 0.050 | 3600 | 0.8 |
Note⑤：The tolerances listed in the table are specified as all plus or all minus. When tolerances are specified as plus and minus (±), half the values given.
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