bedra 61700
Aluminum Bronze
Characteristics：
bedra 61700 is a medium to high strength bronze that offers a combination of good oxidation and corrosion resistance in seawater and other aggressive environments. It has good ductility, is easily machined, and exhibits excellent wear and anti-galling properties.
Typical applications:
bedra 61700 is widely used for wear and corrosion resistant applications, such as bolts, nuts, bearing races, bearings, bushings, gears, pump parts, valve guides, valve seats, valve bodies, and marine hardware.
Standardization and composition
| GB | QAl9-2 |
|---|---|
| Cu | balance |
| Al | 8.0-10.0% |
| Mn | 1.50-2.50% |
| Sn | ≤ 0.10% |
| Fe | ≤ 0.50% |
| Zn | ≤ 1.0% |
| Si | ≤ 0.10% |
| Pb | ≤ 0.03% |
Physical properties①
Note①：The testing temperature is 20℃. Note②：The testing temperature range is 20℃ to 300℃.
| Density (g/cm³) | 7.6 |
|---|---|
| Metling temperature (℃) | 1061 |
| Electrical conductivity (%IACS) | 14 |
| Thermal conductivity (W / m x K) | 71.2 |
| Coefficient of thermal expansion② (10-6/K) | 17 |
| Modulus of elasticity (GPa) | 90.2 |
Fabrication Properties
Note③：C37700 = 100% Note④：C36000 = 100%
| Cold workability | Good |
| Hot workability | Good |
| Brazing | Poor |
| Resistance welding | Good |
| Forgeability rating③ | 75% |
| Machinability rating④ | 50% |
Mechanical Properties⑤
Note⑤：bedra technical standards
| Diameter (mm) | Temper | Tensile Strength (MPa min.) | Yield Strength (MPa min.) | Elongation (A% min.) | Hardness (HBW min.) |
|---|---|---|---|---|---|
| 4.0 ≤ Ф ≤ 45 | H04 | 515 | / | 14 | 120 |
| 45 ≤ Ф ≤ 120 | M30 | 470 | / | 24 | 110 |
Dimension Tolerance and Delivery Form for Rods
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.) |
| 4.0 ≤ Φ < 10 | 0.12 | 0.06 | 3600 | 1.0 |
| 10 ≤ Φ < 18 | 0.16 | 0.08 | 3600 | 1.0 |
| 18 ≤ Φ < 50 | 0.30 | 0.15 | 4000 | 1.0 |
| 50 ≤ Φ < 60 | 0.40 | 0.20 | 4000 | 1.0 |
| 60 ≤ Φ < 70 | 0.80 | 0.40 | 4000 | 3.0 |
| 70 ≤ Φ < 90 | 1.20 | 0.60 | 3000 | 3.0 |
| 90 ≤ Φ ≤ 120 | 2.00 | 1.00 | 2000 | 5.0 |
Other Delivery Forms
Square rods, Rectangular rods, Profiles
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
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