bedra18155
Chromium Zirconium Copper
Characteristics:
A high copper alloy with higher additions of Cr and Zr than C18150. This alloy is strengthened by precipitation hardening and it shows very good electrical and heat conductivity combined with high strength and high thermal stability after heat treatment.
Typical applications:
This alloy shows very good thermal stability and much higher softening temperature, which can significantly improve the service life of contact tips.
Standardization and composition
| UNS | / |
|---|---|
| EN | / |
| JIS | / |
| GB | / |
| Cu | Balance% |
| Cr | 1.5-2.0% |
| Zr | 0.02-0.20% |
| Fe | < 0.1% |
| Si | < 0.1% |
| Ni | < 0.1% |
Physical properties①
Note①：The testing temperature is 20℃. Note②：The testing temperature range is 20℃ to 300℃.
| Density(g/cm³) | 8.9 |
|---|---|
| Melting temperature(℃) | 1080 |
| Electrical conductivity(%IACS) | 75 |
| Thermal conductivity(W/(m·K)) | 324 |
| Coefficient of thermal expansion ②(10⁻⁶/K) | 16.5 |
| Modulus of elasticity(GPa) | 117 |
| Softening temperature(℃) | 550 |
Fabrication Properties
Note③：C36000 = 100% Note④：C37700 = 100%
| Cold workability | Good |
| Hot workability | Good |
| Brazing | Good |
| Resistance welding | Good |
| Machinability ③ | 20% |
| Forgeability ④ | 80% |
Mechanical Properties ⑤
Note⑤: bedra technical standard
| Temper | Diameter(mm) | Tensile Strength(min.MPa) | Yield Strength(min.MPa) | Elongation(min.A%) |
|---|---|---|---|---|
| TH04 | 8.0 ≤ Φ ≤ 12 | 500 | 480 | 8 |
Dimension Tolerance and Delivery Forms
Note⑥: 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) | Tolerance⑥ (mm) | Ovality (mm max.) | Length (mm max.) | Straightness (mm/m max.) |
| 8.0 ≤ Φ ≤ 10 | 0.06 | 0.03 | 4000 | 1.0 |
| 10 ＜ Φ ≤ 12 | 0.10 | 0.05 | 4000 | 1.0 |
Other Delivery Forms
Tubes, Plates, Busbars, Profiles
Further product information
Please contact us
Sales Asia-Pacific (Excluding-India)
Sales India
Sales North America
Berkenhoff GmbH (headquarters)
- Kinzenbach plant
- Berkenhoffstrasse 14
- 35452 Heuchelheim
- Germany
- +49 641 601 0
- +49 641 601 222
- info(at)bedra.com
Berkenhoff GmbH
- Merkenbach plant
- Rehmühle 1
- 35745 Herborn
- Germany
- +49 2772 5002 0
- +49 2772 5002 155
- info(at)bedra.com
bedra Vietnam Alloy Material Co., Ltd
- Lot CN-06, Hoa Phu Industrial Park,
Mai Dinh Commune,
Hiep Hoa District, Bắc Ninh Province,
Vietnam
- +84 2043900104
- +84 2043900110
- info-asia(at)bedra.com
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