Materials

Aluminum Bronze C63000 (UNS C63000)

Material:

• A high-strength nickel-aluminum bronze alloy containing copper, aluminum, nickel, and iron.

• Known for its exceptional combination of strength, wear resistance, and corrosion resistance.

• One of the strongest and most versatile copper-based alloys used in engineered fasteners and critical components.

Mechanical Properties:

• High strength, with tensile strength typically ranging from 110–140 ksi, depending on temper and processing.

• Excellent fatigue resistance and impact toughness.

• Superior wear and galling resistance compared to most brasses and bronzes.

• Maintains mechanical properties across a broad temperature range.

Corrosion Resistance:

• Outstanding resistance to seawater, salt spray, and marine environments.

• Excellent resistance to chloride attack, biofouling, and cavitation erosion.

• Performs well in many chemical processing environments.

• More resistant to corrosion than many carbon steels and standard stainless steels in marine service.

Manufacturing Considerations:

• Good machinability for a high-strength copper alloy, though more challenging than brass alloys.

• Suitable for machining, forging, and fabrication of custom fasteners and components.

• Weldable using appropriate procedures and filler materials.

• Can be heat treated to optimize mechanical properties.

Applications in Fasteners & Components:

• Marine and offshore fasteners exposed to seawater and harsh environmental conditions.

• Oil & gas equipment requiring corrosion resistance and high mechanical strength.

• Pump shafts, valve components, and bearing assemblies.

• Naval and defense hardware, including non-sparking and corrosion-resistant components.

• Heavy-duty industrial fasteners where both strength and corrosion resistance are critical.