CZ130

CZ130 (also known as CW624N) is a machinable, duplex (alpha/beta) brass alloy known for its good strength, corrosion resistance, and attractive yellow lustre.

Chemical Composition

• Copper (Cu): 55.00% - 57.00%

• Lead (Pb): 1.60% - 3.00%

• Aluminium (Al): 0.05% - 5.00%

• Zinc (Zn): Balance (approx. 38-43%)

• Minor elements: Trace amounts possible

Mechanical Properties

• Tensile Strength: 350 - 420 MPa

• Proof Stress (0.2% offset): 150 - 220 MPa

• Elongation (A50 mm): 20 - 30%

• Hardness (Vickers): 90 - 120 HV

Physical Properties

• Density: 8.44 g/cm³

• Melting Point: Around 890 °C

• Thermal Conductivity: 109 W/m.K

Fabrication and Machinability

• Excellent hot working, often formed by hot extrusion into complex profiles

• Poor to fair cold working ability

• Very good machinability rating (~90 compared to free cutting brass CZ121/CW614N rated 100)

• Excellent soldering and brazing capability

• Welding generally not recommended except for friction welding and fair resistance welding

Typical Uses

• Decorative applications such as shop fittings

• Machine parts and instruments

• Electrical appliances and hinges

• Profiles and sections including angles and bars