bedra67405
Manganese Brass (lead-free)
Characteristics:
It is a Cu–Zn–Mn–Al–Si series copper-based multi-element alloy. The addition of Si and Mn improves the strength and wear resistance of the alloy, and the addition of Al increases the yield strength of the alloy. The product is a high-strength wear-resistant copper alloy with β phase as the matrix and Mn–Si compound as the wear-resistant phase. The alloy is an environmentally friendly and wear-resistant copper alloy that meets the EU RoHS directive.
Typical applications:
It is widely used in valve guides, floating and thrust bearings in the automotive industry, as well as oil distributors and bushings in the hydraulic industry.
Standardization and composition
| UNS | C67400 |
|---|---|
| EN | CW713R |
| JIS | / |
| GB | T67402 |
| Cu | 57.0-59.0% |
| Mn | 1.5-3.0% |
| Si | 0.3-1.3% |
| Al | 1.3-2.3% |
| Pb | ≤0.1% |
| Fe | ≤1.0% |
| Sn | ≤0.4% |
| Zn | Balance% |
Physical properties①
Note①：The testing temperature is 20℃. Note②：The testing temperature range is 20℃ to 300℃.
| Density(g/cm³) | 8.08 |
|---|---|
| Melting temperature(℃) | 885 |
| Electrical conductivity(%IACS) | 23 |
| Thermal conductivity(W/(m·K)) | 100 |
| Coefficient of thermal expansion(10⁻⁶/K) | 19.1 |
| Modulus of elasticity(GPa) | 110 |
Fabrication Properties
Note③：C36000 = 100% Note④：C37700 = 100%
| Cold workability | Poor |
| Hot workability | Excellent |
| Brazing | Good |
| Resistance welding | Good |
| Machinability③ | 30% |
| Forgeability ④ | 100% |
Mechanical Properties⑤
Note⑤：bedra technical standards
| Temper | Diameter(mm) | Tensile Strength(min.MPa) | Yield Strength(min.MPa) | Elongation(min.A%) | Hardness(min.HB) |
|---|---|---|---|---|---|
| R540 | 5.0 ≤ Φ ≤ 80 | 540 | 280 | 15 | 145 |
| R590 | 5.0 ≤ Φ ≤ 120 | 590 | 370 | 10 | 160 |
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) | Tolerance(mm) | Ovality(max.mm) | Length(max.mm) | Straightness(max.mm/m) |
| 5.0 ≤ 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
Tubes,Profiles
Further product information
Please contact us
Sales Asia-Pacific (Excluding-India)
Sales India
Sales North America
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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