bedra 93700
High Leaded Tin Bronze
Characteristics:
It is a continuous cast high-leaded tin bronze alloy with excellent free-machining properties. It offers excellent lubricity due to its lead content. The alloy possesses moderate strength and good corrosion resistance to mild acids typical of mine water. It is ideal for bearing applications where lubrication is inadequate and minor misalignment may occur.
Typical Applications:
It is widely used as a general-purpose bearing material for high-speed applications under moderate to heavy loads and vibration. It is also employed in crankshafts, bearing plates, machine parts, bushings, and applications requiring acid resistance, such as exposure to sulphite fluids. Additionally, it serves as steel-backed bushes for automotive and aero engine applications subject to poor lubrication.
Standardization and composition
| UNS | C93700 |
|---|---|
| EN | CuSn10Pb10 (CB495K) |
| GB | ZCuPb10Sn10 |
| Cu | 78-82% |
| Pb | 8.0-10% |
| Sn | 9.0-11% |
| Zn | ≤ 0.8% |
| P | ≤ 0.1% |
| Ni | ≤ 0.5% |
| Fe | ≤ 0.7% |
Physical properties①
Note①：The testing temperature is 20℃. Note②：The testing temperature range is 20℃ to 300℃.
| Density (g/cm³) | 8.86 |
|---|---|
| Metling temperature (℃) | 929 |
| Electrical conductivity (%IACS) | 10 |
| Thermal conductivity (W / m x K) | 46.9 |
| Coefficient of thermal expansion② (10-6/K) | 17.8 |
| Modulus of elasticity (GPa) | 75.8 |
Fabrication Properties
Note③：C36000 = 100%
| Cold workability | Good |
| Hot workability | Poor |
| Brazing | Good |
| Resistance welding | Not recommended |
| Machinability rating③ | 80% |
Mechanical Properties
| Diameter (mm) | Temper | Tensile Strength (MPa min.) | Yield Strength (MPa min.) | Elongation (% min.) |
|---|---|---|---|---|
| 15 ≤ Ф ≤ 100 | M07 | 220 | 140 | 5 |
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.) |
| 15 ≤ Φ < 30 | 0.1 | 0.05 | 4000 | 0.5 |
| 30 ≤ Φ < 60 | 0.2 | 0.10 | 4000 | 0.5 |
| 60 ≤ Φ < 80 | 1.0 | 0.50 | 4000 | 1.0 |
| 80 ≤ Φ ≤ 100 | 1.6 | 0.80 | 3000 | 1.0 |
Other Delivery Forms
Tubes
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
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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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