bedra67422
Manganese Brass
Characteristics:
It is a Cu–Zn–Mn–Ni–Si–Pb series copper-based multi-element alloy. The addition of Si, Ni, and Mn improves the strength and wear resistance of the alloy, and the addition of Pb enhances its wear resistance and machinability. The β phase is used as the matrix, and Mn–Si and Ni–Si compounds are the strengthening phase and wear-resistant phase.
Typical applications:
Widely used in the hydraulic industry's sliding shoes, ball hinges, bearings, sleeves and other parts.
Standardization and composition
| UNS | / |
|---|---|
| EN | / |
| JIS | / |
| GB | T67422（HMn57-2-2-1） |
| Cu | 56.0–58.0% |
| Mn | 1.0–2.5% |
| Si | 0.5–1.5% |
| Pb | 0.2–0.8% |
| Ni | 1.5–3.0% |
| Zn | Balance% |
Physical properties①
Note①：The testing temperature is 20℃. Note②：The testing temperature range is 20℃ to 300℃.
| Density(g/cm³) | 8.2 |
|---|---|
| Melting temperature(℃) | 899 |
| Electrical conductivity(%IACS) | 18 |
| Thermal conductivity(W/(m·K)) | 88 |
| Coefficient of thermal expansion²(10⁻⁶/K) | 19.1 |
| Modulus of elasticity(GPa) | 96 |
Fabrication Properties
Note③：C36000 = 100% Note④：C37700 = 100%
| Capacity for being cold worked | Poor |
| Capacity for being hot formed | Excellent |
| Brazing | Good |
| Resistance welding | Good |
| Machinability rating③ | 50% |
| Forgeability rating④ | 100% |
Mechanical Properties⑤
Note⑤：bedra technical standards
| Temper | Diameter(mm) | Tensile Strength(MPa min.) | Yield Strength(MPa min.) | Elongation(A% min.) | Hardness(HB min.) |
|---|---|---|---|---|---|
| HR02 | 6.0 ≤ Φ < 15 | 530 | 320 | 15 | 135 |
| HR02 | 15 ≤ Φ < 50 | 510 | 300 | 15 | 135 |
| M30 | 50 ≤ Φ < 120 | 450 | 175 | 20 | 130 |
Dimension Tolerance and Delivery Forms
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 max.(mm) | Length max.(mm) | Straightness max.(mm/m) |
| 6.0 ≤ Φ < 10 | 0.06 | 0.03 | 3600 | 0.3 |
| 10 ≤ Φ < 18 | 0.07 | 0.03 | 3600 | 0.3 |
| 18 ≤ Φ < 30 | 0.08 | 0.04 | 4000 | 0.5 |
| 30 ≤ Φ < 50 | 0.16 | 0.08 | 4000 | 0.5 |
| 50 ≤ Φ < 60 | 0.80 | 0.40 | 4000 | 1.0 |
| 60 ≤ Φ < 80 | 1.6 | 0.80 | 3000 | 1.0 |
| 80 ≤ Φ < 120 | 2.0 | 1.0 | 2500 | 5.0 |
Other Delivery Forms
Profiles, Tubes
Please contact us
Sales Asia-Pacific (Excluding-India)
Sales India
Sales North America
Further product information
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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