bedra 51000
Phosphor Bronze
Characteristics：
bedra 51000 is a bronze alloy containing approximately 5% tin and 0.2% phosphorus for deoxidation. The addition of tin increases the strength and corrosion resistance in marine environments. It offers an optimized combination of engineering properties, such as excellent fatigue and spring characteristics, outstanding resistance to stress relaxation, high strength and ductility, coupled with good corrosion resistance.
Typical applications:
This alloy is widely used in spring-loaded conductivity applications, such as springs, contacts, terminals, electrical and electronic connectors. It is also used as fasteners and in wear- and corrosion-resistant parts, such as thrust washers, gears, marine propellers, textile machinery bearings, sleeve bushings, and clutch discs.
Standardization and composition
| UNS | C51000 |
|---|---|
| GB | QSn5-0.2 |
| Cu | balance |
| Sn | 4.20-5.80% |
| P | 0.03-0.35% |
| Pb | ≤ 0.05% |
| Fe | ≤ 0.10% |
| Zn | ≤ 0.30% |
Physical properties①
Note①：The testing temperature is 20℃. Note②：The testing temperature range is 20℃ to 300℃.
| Density (g/cm³) | 8.86 |
|---|---|
| Metling temperature (℃) | 1049 |
| Electrical conductivity (%IACS) | 15 |
| Thermal conductivity (W / m x K) | 69.2 |
| Coefficient of thermal expansion② (10-6/K) | 17.1 |
| Modulus of elasticity (GPa) | 110 |
Fabrication Properties
Note③：C36000 = 100%
| Capacity for being cold worked | Excellent |
| Capacity for being hot formed | Poor |
| Brazing | Excellent |
| Resistance welding | Good |
| Machinability rating③ | 20% |
Mechanical Properties
| Diameter (mm) | Temper | Tensile Strength (MPa min.) | Yield Strength (MPa min.) | Elongation (% min.) | Hardness (HV5 min.) |
|---|---|---|---|---|---|
| 20 ≤ Ф ≤ 25.4 | H04 | 414 | / | 15 | / |
| 25.4 < Ф ≤ 50 | H04 | 380 | / | 18 | / |
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.) |
| 20 ≤ Φ <30 | 0.2 | 0.1 | 3000 | 2.0 |
| 30 ≤ Φ < 50 | 0.3 | 0.15 | 3000 | 3.0 |
| 50 ≤ Φ < 80 | 0.8 | 0.4 | 3000 | 4.0 |
| 80 ≤ Φ ≤ 100 | 1.6 | 0.8 | 2000 | 4.0 |
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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