C35000

C35000 is a medium leaded brass alloy widely recognised for its excellent balance of machinability, strength, and corrosion resistance. It contains approximately 62-63% copper, 0.8-2.0% lead, and zinc making up the remainder.

Chemical Composition

• Copper (Cu): 61.0 – 63.0%

• Lead (Pb): 0.8 – 2.0%

• Zinc (Zn): Balance (around 34.5 – 40%)

• Iron (Fe): Up to 0.15%

• Other residuals: Up to 0.4%

Mechanical Properties

• Tensile Strength: 340 – 650 MPa (varies by temper and form)

• Yield Strength: 120 – 420 MPa

• Elongation: 3 – 38% (depending on temper)

• Hardness: Rockwell B 53 – 91 (depending on temper)

Physical Properties

• Density: 8.44 g/cm³

• Melting Range: Solidus ~1640°F (893°C), Liquidus ~1680°F (915°C)

• Electrical Conductivity: 26% IACS

• Thermal Conductivity: 67 BTU/(ft²·hr·°F)

• Coefficient of Thermal Expansion: 11.3 × 10⁻⁶ /°F

• Specific Heat Capacity: 0.09 BTU/lb/°F

• Modulus of Elasticity: 15000 ksi

• Modulus of Rigidity: 5600 ksi

Fabrication and Applications

• Excellent machinability rated at 70%

• Good cold workability and fair hot workability

• Excellent soldering, good brazing; limited welding suitability

• Commonly used in applications like fasteners, valves, gears, and hardware components requiring good machinability and strength