CW616N

CW616N is a leaded alpha/beta brass alloy with a small addition of aluminium, which enhances its bright golden colour and corrosion resistance. The lead content provides excellent free-cutting machinability. CW616N is readily extrudable and commonly used in builders’ hardware.

Chemical Composition

• Copper (Cu): 57.00 – 59.00%

• Lead (Pb): 1.00 – 2.00%

• Tin (Sn): Up to 0.20%

• Iron (Fe): Up to 0.20%

• Aluminium (Al): 0.05 – 0.30%

• Nickel (Ni): Up to 0.20%

• Total Others: Up to 0.20%

• Zinc (Zn): Remainder

Mechanical Properties (According to EN12165, Temper H080)

• Hardness: 80 – 170 HV, depending on shape and size

• Tensile Strength: Minimum 340 MPa (round bar)

• Elongation: Minimum 20%

• Machinability: Approximately 95% compared to CuZn39Pb3

• Cold Workability: Poor

• Hot Workability: Excellent

Physical Properties

• Density: 8.3 g/cm³

• Thermal Conductivity: 784 BTU-in/hr-ft²-°F

• Melting Point: Solidus 1620°F, Liquidus 1650°F

• Coefficient of Thermal Expansion: 14.4 µin/in-°F

• Specific Heat Capacity: 0.0908 BTU/lb-°F

Typical Applications

• Architectural components

• Builders’ hardware

• Decorative extrusions

• Fittings requiring good machinability and corrosion resistance