CW506L

CW506L is a yellow brass alloy also known as CuZn33 or C26800, characterized by approximately 66-68% copper and around 32-34% zinc.

Chemical Composition

• Copper (Cu): 66.0 – 68.0%

• Zinc (Zn): Balance

• Lead (Pb): Up to 0.05%

• Iron (Fe): Up to 0.05%

• Tin (Sn): Up to 0.10%

• Nickel (Ni): Up to 0.30%

• Aluminium (Al): Up to 0.02%

• Total impurities: Up to 0.10%

Mechanical Properties (Typical for temper R350)

• Tensile Strength (UTS): 350 – 430 MPa

• Proof Stress (PS): Minimum 170 MPa

• Elongation: Minimum 23%

• Hardness: 70 – 75 (Vickers, typical)

• Machinability: Fair

• Excellent cold forming capabilities and soldering/brazing properties

Physical Properties

• Density: 8.4 g/cm³

• Melting Point: Approximately 890–910°C

• Thermal Conductivity: Approx. 95–105 W/m·K

• Electrical Conductivity: 25% IACS

• Coefficient of Thermal Expansion: 20 μm/m-K

Fabrication and Uses

• Excellent for cold forming, bending, forming, and deep drawing

• Good brazing, soldering, and welding (oxyacetylene recommended)

• Often used for automotive parts, decorative hardware, marine fittings, plumbing components, and electrical fittings