bedra 49260
Bismuth Brass
Characteristics:
By replacing the lead element with bismuth, the material not only ensures excellent machinability but is also environmentally friendly. It possesses outstanding mechanical and electrical properties, making it an ideal substitute for leaded brass.
Typical applications:
This alloy finds extensive applications in TWS earphones, CMOS lens products, electronics, hardware, connectors, valve cores, and the food machinery sector.
Standardization and composition
| UNS | 49260 |
|---|---|
| GB | HBi60-1-0.05 |
| Cu | 58.0-63% |
| Pb | ≤ 0.009% |
| Bi | 0.5-1.8% |
| P | 0.05-0.15% |
| Fe | ≤ 0.5% |
| Sn | ≤ 0.5% |
| Si | ≤ 0.1% |
| Cd | ≤ 0.001% |
| Zn | balance |
Physical properties①
Note①：The testing temperature is 20℃. Note②：The testing temperature range is 20℃ to 300℃.
| Density (g/cm³) | 8.9 |
|---|---|
| Metling temperature (℃) | 884 |
| Electrical conductivity (%IACS) | 21.7 |
| Thermal conductivity (W / m x K) | 79 |
| Coefficient of thermal expansion② (10-6/K) | 17.5 |
| Modulus of elasticity (GPa) | 108.9 |
Fabrication Properties
Note③：C37700 = 100% Note④：C36000 = 100%
| Capacity for being cold worked | Fair |
| Capacity for being hot formed | Fair |
| Brazing | Good |
| Forgeability rating③ | 70% |
| Machinability rating④ | 90% |
Mechanical Properties
| Diameter (mm) | Temper | Tensile Strength (MPa min.) | Yield Strength (MPa min.) | Elongation (% min.) |
|---|---|---|---|---|
| 3 ≤ Φ ＜ 12 | H02 | 395 | 170 | 7 |
| 12 ≤ Ф < 25 | H02 | 380 | 170 | 10 |
| 25 ≤ Ф < 50 | H02 | 345 | 140 | 15 |
| 50 ≤ Ф ≤ 80 | H02 | 310 | 105 | 20 |
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 | Coil wire | |||||
| Diameter (mm) | Tolerance⑤ (mm) | Ovality (mm) | Length (mm. max.) | Straightness (mm/m max.) | ID (mm) | weight (kg) |
| 3.0 ≤ Φ < 6.0 | 0.02 | 0.010 | 4000 | 0.5 | 800 | 500 |
| 6.0 ≤ Φ < 10 | 0.03 | 0.015 | 4000 | 0.5 | 1200 | 800 |
| 10 ≤ Φ < 18 | 0.04 | 0.020 | 4000 | 0.5 | 1500 | 1000 |
| 18 ≤ Φ < 25 | 0.06 | 0.003 | 4000 | 0.5 | ||
| 25 ≤ Φ < 40 | 0.10 | 0.050 | 4000 | 0.5 | ||
| 40 ≤ Φ < 60 | 0.15 | 0.075 | 4000 | 0.5 | ||
| 60 ≤ Φ ≤ 80 | 0.30 | 0.150 | 3000 | 2.0 |
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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