bedra 93800
High Leaded Tin Bronze
Characteristics：
bedra 93800 is a high-leaded tin bronze alloy with excellent machinability. This alloy maintains favorable thermal conductivity and good lubricity due to its lead content. High-leaded tin bronzes are ideal for bearing applications.
Typical applications:
bedra 93800 is widely used as a wear-resistant material for rod bushings, wedges, and pump impellers, as well as general-purpose bearings under moderate loads. Additionally, it serves as steel-backed bushings for automotive and aero engine applications subject to poor lubrication conditions.
Standardization and composition
| UNS | C93800 |
|---|---|
| EN | CuSn7Pb15 (CB496K) |
| GB | ZQPb15-7-1 |
| Cu | balance |
| Pb | 13-17% |
| Sn | 7.0-9.0% |
| Zn | ≤ 2.0 |
| P | ≤ 0.1% |
| Ni | ≤ 2.0% |
| Fe | ≤ 0.25% |
Physical properties①
Note①：The testing temperature is 20℃. Note②：The testing temperature range is 20℃ to 300℃.
| Density (g/cm³) | 9.25 |
|---|---|
| Metling temperature (℃) | 943 |
| Electrical conductivity (%IACS) | 11 |
| Thermal conductivity (W / m x K) | 52.3 |
| Coefficient of thermal expansion② (10-6/K) | 18.5 |
| Modulus of elasticity (GPa) | 72.4 |
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.) | Hardness (HBW min.) |
|---|---|---|---|---|---|
| 15 ≤ Ф < 100 | M07 | 200 | 100 | 6 | 65 |
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
Sales Europe
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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