bedra 51900
Phosphor Bronze
Characteristics:
It is a solid solution strengthened copper alloy containing approximately 6% tin. It has a very good combination of strength and electrical conductivity. The alloy is wear-resistant, exhibits excellent corrosion resistance to seawater and industrial atmospheres, and can be readily soldered.
Typical Applications:
It can be used in bearing applications working under medium to high loads and sliding speeds, such as washers, bearings, bushings, and turbine parts. It can also be used as electrical connectors and other elastic parts, such as springs and reeds.
Standardization and composition
| UNS | C51900 |
|---|---|
| EN | CuSn6 (CW452K) |
| JIS | C5191 |
| GB | QSn7-0.2 |
| Cu | balance |
| Sn | 5.0-7.0% |
| P | 0.03-0.35% |
| Pb | ≤ 0.05 % |
| Fe | ≤ 0.10% |
| Ni | ≤ 0.30% |
Physical properties①
Note①：The testing temperature is 20℃. Note②：The testing temperature range is 20℃ to 300℃.
| Density (g/cm³) | 8.83 |
|---|---|
| Metling temperature (℃) | 1038 |
| Electrical conductivity (%IACS) | 14 |
| Thermal conductivity (W / m x K) | 66 |
| Coefficient of thermal expansion② (10-6/K) | 17.3 |
| Modulus of elasticity (GPa) | 110.3 |
Fabrication Properties
Note③：C36000 = 100%
| Cold workability | Excellent |
| Hot workability | Poor |
| Brazing | Excellent |
| Resistance welding | Good |
| Machinability rating ③ | 20% |
Mechanical Properties④
Note④：bedra technical standards
| Diameter (mm) | Temper | Tensile Strength (MPa min.) | Yield Strength (MPa min.) | Elongation (A% min.) | Hardness(HBW min.) |
|---|---|---|---|---|---|
| 20 ≤ Φ ≤ 50 | H04 | 440 | / | 19 | 130-200 |
| 50 ≤ Φ ≤ 100 | H04 | 440 | / | 19 | / |
Dimension Tolerance and Delivery Form
Note⑤：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) | Tolerance⑤ (mm) | Ovality (mm) | Length (mm. max.) | Straightness (mm/m max.) |
| 20 ≤ Φ < 30 | 0.17 | 0.09 | 3000 | 2.0 |
| 30 ≤ Φ < 50 | 0.20 | 0.10 | 3000 | 3.0 |
| 50 ≤ Φ < 80 | 0.37 | 0.20 | 3000 | 4.0 |
| 80 ≤ Φ ≤ 100 | 0.50 | 0.25 | 2000 | 4.0 |
Other Delivery Forms
Tubes, Profiles
Further product information
PDF Datasheet | EN PDF Datasheet | VI PDF Datasheet | ZH
Please contact us
Sales Asia-Pacific (Excluding-India)
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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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