bedra64700
bedra64700 is a heat-treatable and can be cold worked to enhance mechanical strength. It offers excellent wear and corrosion resistance in both marine and industrial environments. Its low friction properties enable its use in plunger tips for die casting machines. Additionally, the alloy possesses high electrical and thermal conductivity along with good notch toughness.
Typical applications:
bedra64700 is widely used for electrode arms in resistance welding; contact tips in submerged arc welding machines; and electrodes for spot, seam, and butt welding machines. Additionally, it serves as mold material and motor commutators. The material is also suitable for other components requiring high strength, hardness, and electrical conductivity.
Standardization and composition
| UNS | C64700 |
|---|---|
| EN | CuNi2Si (CW111C) |
| JIS | / |
| GB | C64700 (QSi0.6-2) |
| Cu | Balance% |
| Ni | 1.6-2.5% |
| Si | 0.4-0.8% |
| Mn | ≤ 0.1% |
| Fe | ≤ 0.2% |
| Pb | ≤ 0.02% |
Physical properties①
Note①：The testing temperature is 20℃. Note②：The testing temperature range is 20℃ to 300℃.
| Density | 8.8 g/cm3 |
|---|---|
| Melting point | 1080 ℃ |
| Electrical conductivity | 34 %IACS |
| Thermal conductivity | 180 W/( m·K) |
| Coefficient of thermal expansion ② | 17.3 10-6/K |
| Modulus of elasticity | 114 GPa |
Fabrication Properties
| Capacity for being cold worked | Good |
| Capacity for being hot formed | Good |
| Brazing | Good |
| Resistance welding | Poor |
| Forgeability rating | Good |
| Machinability rating | Poor |
Mechanical Properties
| Temper | Diameter(mm) | Tensile Strength(MPa min.) | Yield Strength(MPa min.) | Elongation(% min.) | Hardness(HBW min.) |
|---|---|---|---|---|---|
| R550 | 20 ≤ Φ ≤ 80 | 550 | 430 | 15 | 150 |
| R600 | 20 ≤ Φ ≤ 50 | 600 | 520 | 10 | 165 |
| R640 | 2.0 ≤ Φ ≤ 30 | 640 | 590 | 10 | 180 |
Dimension Tolerance and Delivery Form
Note③：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) | Tolerance③ (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 |
Other Delivery Forms
Tubes, Plates, Busbars, Profiles
Further product information
PDF Datasheet | EN PDF Datasheet | VI PDF Datasheet | ZH
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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