Bronze Alloy Selection
23 October
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Nickel Aluminium Bronze AB2
Key Features
- Suitable for marine applications
- Superior corrosion resistance
- Superior wear resistance
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Key Features
- Suitable for marine applications
- Superior corrosion resistance
- Superior wear resistance
Overview
Alloy AB2 is a nickel aluminium bronze that is widely used in marine applications. The nickel content in this material means that it has superior corrosion resistance to marine conditions. AB2 also has high strength and good wear resistance, making it suitable for bearings, gears and other components with heavy loads and slow speeds. Good lubrication and alignment are required to ensure optimum performance.
Material Profile
Metric
Imperial
| Profile | Size Range | Availability | |
| Solid Round |
|
6" see full size range | In Stock |
| Hollow Round |
|
8" x 5" see full size range | In Stock |
Chemical Composition
| Element | Symbol | Range % | Nominal % |
| Aluminium | Al | 8.8-10.0 | 9.5 |
| Iron | Fe | 4.0-5.5 | 4.8 |
| Nickel | Ni | 4.0-5.5 | 5.0 |
| Manganese | Mn | 3.0 maximum | |
| Tin | Sn | 0.1 maximum | |
| Lead | b | 0.03 maximum | |
| Zinc | Zn | 0.5 maximum | |
| Copper | Cu | Balance |
Physical Properties
Metric
Imperial
| Material | Unit | Nickel Aluminium Bronze AB2 |
| Tensile Strength Min | psi | 85000 |
| Yield Strength Min | psi | 35000 |
| Elongation Min | % | 18% |
| Hardness Min | BHN | 159 |
Machining Allowances
All Kormax AB2 Aluminium Bronze bar has machining allowances added to the sizes quoted. To use 4-1/2” x 2-1/2” hollow bar as an example, this material would measure approximately 4.650” OD x 2.375” ID as supplied (see table below). Therefore this allows finished components measuring 4-1/2” OD x 2-1/2” ID to be easily manufactured from 4-1/2” x 2-1/2” hollow bar.
Machining allowances are as follows:
| Outside Diameter | Inside Diameter | ||
| Size Range | Allowance | Size Range | Allowance |
| up to 2-3/4” | +0.072” | up to 2-3/4” | -0.125” |
| 3” to 4” | +0.110” | 3” to 4” | -0.125” |
| 4-1/4” to 6-1/2” | +0.150” | 4-1/4” to 6-1/2” | -0.145” |
| 7” to 8” | +0.190” | 7” to 8” | -0.200” |
| 8-1/2” to 20” | +0.125” | 8-1/2” to 18” | -0.125” |
Comparative Specifications
BS1400 – AB2; AS1565 C95810*; JIS H5121 – CAC703C (A1BC3)*; DIN 1714 – G-CuAl10Ni*; ISO 1338 – CuAl10Fe5Ni5 ; BS EN 1982 CuAl10Fe5Ni5*
*Similar but not identical