C34000

C34000 is a medium leaded brass alloy well-known for its high machinability and moderate strength, making it ideal for machining operations, hot stamping, and applications like fittings, fasteners, and components requiring good corrosion resistance.

Chemical Composition

• Copper (Cu): 62.0 – 65.0%

• Zinc (Zn): 33.0 – 37.2%

• Lead (Pb): 0.8 – 1.5%

• Iron (Fe): Up to 0.1%

• Other elements: Up to 0.4%

Mechanical Properties

• Tensile Strength (UTS): 340 – 650 MPa (49 – 95 ksi)

• Yield Strength: 100 – 350 MPa (varies with form and temper)

• Elongation: 5 – 41% (depends on temper)

• Hardness: Rockwell B 53–91 (varies with form)

• Machinability Rating: 100 (excellent for machining)

Physical Properties

• Density: 8.47 g/cm³ (0.306 lb/cu in)

• Melting Point: Solidus 1630°F (890°C), Liquidus 1700°F (930°C)

• Electrical Conductivity: 26% IACS at 68°F

• 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: 15,000 ksi; Modulus of Rigidity: 5,600 ksi

Fabrication and Uses

• Excellent for blanking, heading, upsetting, roll threading, knurling, stamping, and machining

• Excellent soldering; Good brazing; welding generally not recommended

• Commonly used in plumbing fittings, screws, nuts, rivets, and fastener components