bedra 18000
Copper Nickel Silicon
Characteristics:
This is a wrought Cu-Ni-Si-Cr alloy. Its strength is derived from the strengthening effect of the Ni-Si phase and Chromium, which results in high thermal conductivity. The alloy can be heat-treated to meet the requirements of RWMA Class III. Furthermore, its excellent anti-friction properties and thermal stability enable it to be used effectively as mold components.
Typical applications:
It is widely applied to resistance welding electrode arms, submerged arc welding nozzles, die materials, and connector terminals.
Standardization and composition
| UNS | C18000 |
|---|---|
| Cu | balance |
| Ni | 1.8-3.0% |
| Si | 0.4-0.8% |
| Cr | 0.1-0.8% |
| Fe | ≤ 0.15% |
Physical properties①
Note①：The testing temperature is 20℃. Note②：The testing temperature range is 20℃ to 300℃.
| Density (g/cm³) | 8.9 |
|---|---|
| Metling temperature (℃) | 1080 |
| Electrical conductivity (%IACS) | 45 |
| Thermal conductivity (W / m x K) | 180 |
| Coefficient of thermal expansion② (10-6/K) | 17.3 |
| Modulus of elasticity (GPa) | 114 |
Fabrication Properties
Note③：C36000 = 100%
| Capacity for being cold worked | Good |
| Capacity for being hot formed | Good |
| Brazing | Good |
| Resistance welding | Not recommended |
| Machinability rating③ | 20% |
Mechanical Properties
| Diameter (mm) | Temper | Tensile Strength (MPa min.) | Yield Strength (MPa min.) | Elongation (% min.) | Hardness (HRB min) |
|---|---|---|---|---|---|
| 5.0 ≤ Ф ≤ 25 | TH04 | 656 | 580 | 9.0 | 90 |
| 25 ≤ Ф ≤ 50 | TH04 | 635 | 550 | 9.0 | 90 |
| 50 ≤ Ф ≤ 75 | TH04 | 607 | 520 | 9.0 | 90 |
Dimension Tolerance and Delivery Form
Note④：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.
| Straight bar | ||||
| Diameter (mm) | Tolerance④ (mm) | Ovality (mm) | Length (mm. max.) | Straightness (mm/m max.) |
| 5.0 < Φ ≤ 10 | 0.06 | 0.03 | 4000 | 1.0 |
| 10 < Φ ≤ 20 | 0.10 | 0.05 | 4000 | 1.0 |
| 20 < Φ ≤ 25 | 0.14 | 0.07 | 4000 | 1.0 |
| 25 < Φ ≤ 30 | 0.18 | 0.09 | 4000 | 1.0 |
| 30 < Φ ≤ 40 | 0.20 | 0.10 | 4000 | 1.0 |
| 40 < Φ ≤ 45 | 0.24 | 0.12 | 4000 | 1.0 |
| 45 < Φ ≤ 45 | 0.30 | 0.15 | 4000 | 1.0 |
| 50 < Φ ≤ 60 | 0.34 | 0.17 | 4000 | 1.0 |
| 60 < Φ ≤ 80 | 0.44 | 0.22 | 2500 | 3.0 |
Further product information
PDF Datasheet | EN PDF Datasheet | VI PDF Datasheet | ZH
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- Lot CN-06, Hoa Phu Industrial Park,
Mai Dinh Commune,
Hiep Hoa District, Bắc Ninh Province,
Vietnam
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