C63600

C63600 is a silicon-aluminium bronze alloy known for its strength, corrosion resistance, electrical conductivity, and good welding and brazing capabilities.

Chemical Composition

• Copper (Cu): Balance (~95.5%)

• Aluminium (Al): 3.0 – 4.0%

• Silicon (Si): 0.7 – 1.3%

• Arsenic (As): Up to 0.15%

• Iron (Fe): Up to 0.15%

• Nickel (Ni): Up to 0.15%

• Tin (Sn): Up to 0.2%

• Zinc (Zn): Up to 0.5%

• Lead (Pb): Up to 0.05%

Mechanical Properties

• Tensile Strength: 410 – 530 MPa (varies with temper)

• Elongation: Approximately 30 – 64% (varies with temper)

• Rockwell Hardness (B Scale): 60 – 84

Physical Properties

• Density: Around 8.33 g/cm³

• Thermal Conductivity: Approx. 33 W/m·K

• Electrical Conductivity: 12% IACS

• Melting Range: Approx. 980 – 1032°C

• Thermal Expansion Coefficient: 16.9 x 10⁻⁶ /°C

Fabrication and Joining

• Excellent cold workability and fair hot forging ability

• Good weldability and brazing suitability, including gas shield arc welding and resistance welding

• Not recommended for oxyacetylene welding or soldering

Applications

• Marine hardware (pump & valve components, shafts)

• Electrical connectors and busbars

• Heat exchangers and plumbing fittings

• Fasteners and machined components requiring corrosion resistance and strength