CZ132

CZ132 is a dezincification resistant (DZR) brass alloy, also designated as CW602N in EN standards. It is specially formulated for excellent resistance to dezincification, good corrosion resistance, and enhanced machinability due to the addition of lead and arsenic.

Chemical Composition

• Copper (Cu): 61.0 – 63.0%

• Lead (Pb): 1.7 – 2.8%

• Arsenic (As): 0.02 – 0.15%

• Zinc (Zn): 35.0 – 37.0%

• Tin (Sn): Up to 0.1%

• Iron (Fe): Up to 0.1%

• Nickel (Ni): Up to 0.3%

• Aluminium (Al): Up to 0.05%

• Manganese (Mn): Up to 0.1%

• Others: Up to 0.2%

Mechanical Properties

• Tensile Strength: Minimum 350 MPa (depending on size and form)

• Proof Strength: Minimum 150 MPa

• Elongation: Minimum 22%

Physical Properties

• Density: About 8.4 g/cm³

• Melting Range: Solidus ~ 1645°F (895°C), Liquidus ~ 1660°F (903°C)

• Electrical Conductivity: Approximately 26% IACS

• Thermal Conductivity: Around 117 W/m°C

• Thermal Expansion: Approximately 20.7 × 10⁻⁶ /°C

Fabrication and Applications

• Excellent hot and good cold formability

• Good machinability: Machinability rating around 75% compared to free cutting brass

• Excellent soldering and brazing capabilities

• Not recommended for welding

• Applications include plumbing fittings, valves, taps, and other components requiring high resistance to dezincification and corrosion