bedra 49250
Bismuth Brass
Characteristics：
bedra 49250 exhibits excellent turning performance comparable to that of C3604, as well as superior riveting and hot forging capabilities. Additionally, it possesses outstanding mechanical and electrical properties, making it an ideal material to replace lead brass.
Typical applications:
Primarily serving as a lead-free substitute for leaded brass, this alloy finds extensive applications in e-cigarettes, connectors, valve cores, embedded nuts, smart charging systems, coffee pot components, consumer electronics, hardware, machinery, construction equipment, 5G accessories, and more.
Standardization and composition
| UNS | C49250 |
|---|---|
| JIS | C6801 |
| GB | HBi60-1.3 (HBi59-1) |
| Cu | 58-61% |
| Pb | ≤ 0.009% |
| Bi | 1.8-2.4% |
| Sn | ≤ 0.30% |
| Fe | ≤ 0.5% |
| 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) | 8.41 |
|---|---|
| Electrical conductivity (%IACS) | 24 |
| Thermal conductivity (W / m x K) | 96 |
| Coefficient of thermal expansion② (10-6/K) | 18.9 |
| Modulus of elasticity (GPa) | 100.7 |
Fabrication Properties
Note③：C37700 = 100% Note④：C36000 = 100%
| Capacity for being cold worked | Fair |
| Capacity for being hot formed | Fair |
| Brazing | Good |
| Resistance welding | Not recommended |
| Forgeability rating③ | 70% |
| Machinability rating④ | 90% |
Mechanical Properties
| Diameter (mm) | Temper | Tensile Strength (MPa min.) | Yield Strength (MPa min.) | Elongation (% min.) | Hardness (HV min.) |
|---|---|---|---|---|---|
| 3.0 ≤ Ф < 12 | H02 | 420 | 170 | 7 | 120 |
| 3.0 ≤ Ф < 12 | H04 | 500 | 350 | 5 | 140 |
| 12 ≤ Ф < 25 | H02 | 420 | 170 | 7 | 120 |
| 25 ≤ Ф < 50 | H02 | 390 | 140 | 15 | 100 |
| 50 ≤ Ф < 80 | H02 | 390 | 140 | 15 | 100 |
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 | |||||
| Diamter (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 | 0.02 | 4000 | 0.5 | 1500 | 1000 |
| 18 ≤ Φ < 25 | 0.06 | 0.03 | 4000 | 0.5 | ||
| 25 ≤ Φ < 40 | 0.10 | 0.05 | 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
Close
English 
Deutsch