bedra 6782
Manganese Brass
Characteristics:
The primary strengthening mechanism of this alloy is solution strengthening. Its distinctive elemental composition confers excellent machinability and wear resistance. The microstructure comprises α and β phases in an approximately 1:1 ratio, resulting in balanced cold and hot workability.
Typical applications:
Air conditioning nut, sensor slider, carburetor, etc.
Standardization and composition
| JIS | C6782 |
|---|---|
| GB | HMn58-2-1-0.5 |
| Cu | 56.0-60.5% |
| Al | 0.2-2.0% |
| Mn | 0.5-2.5% |
| Fe | 0.1-1.0% |
| Pb | ≤ 0.5% |
| Zn | balance |
Physical properties①
Note①：The testing temperature is 20℃. Note②：The testing temperature range is 20℃ to 300℃.
| Density (g/cm³) | 8.1 |
|---|---|
| Metling temperature (℃) | 883 |
| Electrical conductivity (%IACS) | 13 |
| Thermal conductivity (W / m x K) | 59 |
| Coefficient of thermal expansion② (10-6/K) | 19 |
| Modulus of elasticity (GPa) | 119 |
Fabrication Properties
Note③：C36000 = 100%
| Capacity for being cold worked | Good |
| Capacity for being hot formed | Good |
| Machinability rating③ | 80% |
Mechanical Properties
| Diameter (mm) | Temper | Tensile Strength (MPa min.) | Elongation (% min.) | Hardness (HB min.) |
|---|---|---|---|---|
| 5.0 ≤ Ф ≤ 50 | H02 | 490 | 15 | 120 |
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.) |
| 5.0 ≤ Φ < 10 | 0.05 | 0.03 | 2500 | 0.5 |
| 10 ≤ Φ < 18 | 0.08 | 0.05 | 2500 | 0.5 |
| 18 ≤ Φ < 30 | 0.12 | 0.08 | 4000 | 0.8 |
| 30 ≤ Φ < 50 | 0.15 | 0.12 | 4000 | 1.5 |
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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