Specifications

• Corrosion Resistance:

  • Excellent, particularly in marine and industrial environments.

  • Highly resistant to tarnishing and oxidation due to the formation of a protective aluminum oxide layer.

• Mechanical Strength:

  • High tensile strength and moderate elongation.

  • Suitable for applications requiring durability under load.

• Wear Resistance:

  • Superior due to the combination of aluminum and silicon, making it suitable for components exposed to friction and abrasion.

• Thermal and Electrical Conductivity:

  • Lower than pure copper but still sufficient for some engineering applications.

Applications

CuAl7Si is widely used in industries that demand high strength, wear resistance, and corrosion resistance, such as:

• Marine Industry: Propellers, pumps, and fittings.

• Aerospace: Bushings and bearings in challenging environments.

• Industrial Equipment: Gears, valves, and components in abrasive conditions.

• Decorative Applications: Architectural hardware due to its golden color and tarnish resistance.

Standards

CuAl7Si corresponds to various standards across the globe, depending on its intended application:

• EN (European Norm): Listed under casting and wrought aluminum bronze categories.

• ASTM Standards: May be equivalent to certain ASTM aluminum bronze alloys like C95200 (depending on specific Si content).

• ISO Standards: Included in copper and copper alloy casting norms.