AMS: AMS 4590
Alloy Description: Aluminum Nickel Bronze (Martensitic)
UK: M4
EU: CuAl11Ni5Fe5-NFL14706

This Aluminum-Nickel-Iron Bronze Alloy is used in medium-to heavy-duty applications. A martensitic product strengthened via heat treatment, it is used where high strength is required in combination with reduced elongation or ductility.

This material is used in the aerospace and oil and gas industries for sea water applications in high load yet supported designs.


  • Good corrosion and erosion resistance
  • Excellent in sea water
  • High strength properties
  • Good machinability
  • Low friction properties

Specifications: AMS 4590, ASTM-B-150, CuAl11Ni5Fe5

Download PDF Spec Sheet