bedra 49340
Bismuth Brass
Characteristics：
bedra 49340 is a new type of free-cutting and environmentally friendly brass alloy with added bismuth and tin. This alloy contains a minor amount of lead, less than 900 ppm, and complies with the RoHS directive. It offers excellent machinability and good corrosion resistance.
Typical applications:
bedra 49340 is mainly used for plumbing fittings and automotive parts for environmentally friendly propose.
Standardization and composition
| UNS | C49340 |
|---|---|
| GB | HBi62-1.4-1 |
| Cu | 60-63% |
| Bi | 0.5-2.2% |
| Si | ≤ 1.0% |
| Sn | 0.5-0.15% |
| Cd | ≤ 0.001 |
| Fe | ≤ 0.12% |
| Pb | ≤ 0.09% |
| Zn | balance |
Physical properties①
Note①：The testing temperature is 20℃. Note②：The testing temperature range is 20℃ to 300℃.
| Density (g/cm³) | 8.61 |
|---|---|
| Metling temperature (℃) | 885 |
| Electrical conductivity (%IACS) | 19 |
| Thermal conductivity (W / m x K) | 84 |
| Coefficient of thermal expansion② (10-6/K) | 19.4 |
| Modulus of elasticity (GPa) | 102 |
Fabrication Properties
Note③：C37700 = 100% Note④：C36000 = 100%
| Cold workability | Poor |
| Hot workability | Good |
| Brazing | Good |
| Resistance welding | Excellent |
| Forgeability rating③ | 85% |
| Machinability rating④ | 90% |
Mechanical Properties
Note⑤：bedra technical standards
| Diameter (mm) | Temper | Tensile Strength (MPa min.) | Yield Strength (MPa min.) | Elongation (% min.) | Harness⑤ (HV5 min.) |
|---|---|---|---|---|---|
| 3.0 ≤ Ф < 12 | H02 | 395 | 170 | 7 | 140 |
| 12 ≤ Φ <25 | H02 | 380 | 170 | 10 | 130 |
| 25 ≤ Φ < 50 | H02 | 345 | 140 | 15 | 130 |
Dimension Tolerance and Delivery Form
Note⑥：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) | Tolerance⑥ (mm) | Ovality (mm) | Length (mm. max.) | Straightness (mm/m max.) |
| 3.0 ≤ Φ ≤ 6.0 | 0.02 | 0.010 | 3600 | 0.5 |
| 6.0 < Φ ≤ 10 | 0.03 | 0.015 | 3600 | 0.5 |
| 10 < Φ ≤ 18 | 0.04 | 0.020 | 3600 | 0.5 |
| 18 < Φ ≤ 25 | 0.06 | 0.030 | 6000 | 0.5 |
| 25 < Φ ≤ 40 | 0.10 | 0.050 | 6000 | 0.5 |
| 40 < Φ ≤ 50 | 0.15 | 0.075 | 4000 | 0.5 |
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