CZ107

CZ107 is a brass alloy equivalent to CW510L (CuZn42), characterised by approximately 57-59% copper and around 42% zinc. It is a lead-free yellow brass alloy widely used for applications requiring excellent corrosion resistance, good strength, and moderate machinability.

Chemical Composition

• Copper (Cu): 56% – 59%

• Zinc (Zn): Balance (~41-44%)

• Lead (Pb): Up to 0.10%

• Iron (Fe): Up to 0.30%

• Tin (Sn): Up to 0.10%

• Nickel (Ni): Up to 0.30%

• Aluminium (Al): Up to 0.05%

Mechanical Properties

• Tensile Strength: Approx. 390 – 430 MPa

• Yield Strength: Approx. 220 – 260 MPa

• Elongation: Around 10%

• Hardness: Moderate, depending on temper

Physical Properties

• Density: About 8.41 g/cm³

• Electrical Conductivity: Approx. 31% IACS

• Thermal Conductivity: Around 139 W/m·K

• Coefficient of Thermal Expansion: Approx. 21.7×10−6/K

Applications and Fabrication

• Excellent for plumbing and potable water fittings

• Used in electrical components and hardware

• Offers good machinability for a lead-free alloy

• Suitable for soldering, brazing, gas welding, and resistance welding