CZ124

CZ124 is a free-machining brass alloy known for its high machinability, strength, and corrosion resistance. It is widely used in applications requiring precision machining and good mechanical performance, resembling steel.

Chemical Composition of CZ124

• Copper (Cu): 60.00 - 63.00%

• Lead (Pb): 2.50 - 3.70%

• Iron (Fe): Up to 0.30%

• Zinc (Zn): Balance (Remainder)

• Total Other Elements: Up to 0.50%

Mechanical Properties (BS 2874, Temper M)

• Tensile Strength (UTS) ranges from 280 to 330 N/mm², depending on size and shape

• Proof Stress (PS) from 95 to 130 N/mm²

• Elongation from 12% to 22% depending on form

• Hardness varies by temper and size

Physical Properties

• Melting Point (Liquidus): 1650°F

• Melting Point (Solidus): 1630°F

• Density: 8.5 g/cm³

• Electrical Conductivity: 26% IACS at 68°F

• Thermal Conductivity: 67 BTU/ft²/hr/°F at 68°F

• Coefficient of Thermal Expansion: 11.4 x 10⁻⁶ per °F (68 - 572°F)

• Modulus of Elasticity: 14,000 ksi

• Modulus of Rigidity: 5300 ksi

Fabrication Properties

• Excellent soldering and good brazing capabilities

• Welding is generally not recommended

• Fair cold workability

• Machinability rating: 100 (benchmark for brass)

Typical Uses

• Automotive components

• Builders hardware

• Consumer goods

• Fasteners

• Industrial equipment

• Plumbing fixtures