CW623N

CW623N is a brass alloy also known under designations such as CZ130 and CW624N, classified as a high-strength, leaded alpha/beta brass.

Chemical Composition

• Copper (Cu): 55.00% - 57.00%

• Lead (Pb): 1.60% - 3.00%

• Aluminium (Al): 0.05% - 5.00%

• Zinc (Zn): Balance

• Other elements in trace amounts

Mechanical Properties

• Tensile Strength: 350 - 420 MPa

• Proof Stress: 150 - 220 MPa

• Elongation: 20% - 30%

• Hardness: 90 - 120 HV

Physical Properties

• Density: 8.44 g/cm³

• Melting Point: Around 890°C

• Thermal Conductivity: 109 W/m.K

Fabrication and Application Notes

• Excellent hot workability, often formed via hot extrusion into complex profiles

• Fair to poor cold working capabilities

• Very good machinability rating (~90% compared to free-cutting brass Alloy 360)

• Good corrosion resistance in various environments

• Welding generally not recommended

Typical Uses

• Automotive components

• Plumbing fittings

• Profiles and sections requiring complex shapes

• Industrial hardware

• Applications needing corrosion resistance combined with strength and machinability