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


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 Solid Round 6" see full size range In Stock
Hollow Round 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
MaterialUnitNickel Aluminium Bronze AB2
Tensile Strength Minpsi85000
Yield Strength Minpsi35000
Elongation Min%18%
Hardness MinBHN159

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


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