Other aerospace materials

Aluminum bronze : high-performance alloys for diverse applications

Aluminum bronzes are principally alloys of copper and aluminum. In addition to aluminum, which ranges from 5%-to-14%, other commonly used alloying elements are nickel, iron, manganese, silicon and tin.

Three principal types of aluminum bronzes are available:

• Low alloy, single-phase alpha alloys contain less than 8% aluminum, have good ductility, and are well suited for cold working into tubes, sheets and wires.

• Two-phase, or duplex alloys, contain 8%-to-11% aluminum and are usually alloyed with iron and nickel to achieve higher strength. The increased aluminum content causes the appearance of the relatively harder beta phase, resulting in higher strength and hardness.

• Copper-aluminum-silicon alloys, consisting of roughly 6% aluminum and up to 2% silicon, are called silicon-aluminum bronzes. Originally developed for the manufacture of propellers, these alloys feature improved foundry and application properties, and have especially good resistance to impact and cavitation.x

Discover the extensive range of aluminum bronze alloys we offer.Our materials include high-strength aluminum bronze, and nickel aluminum bronze, to cater to your unique needs.

Please find all specifications for our special materials by clicking on the blue arrow below.