C48600

C48600 is a high-leaded brass alloy commonly known as Dezincification Resistant (DZR) Brass. It contains copper, zinc, tin, and a significant amount of lead, designed to resist dezincification—a form of corrosion particularly prevalent in potable water systems. This alloy is widely used in plumbing fittings, valves, and other applications requiring resistance to corrosion and dezincification.

Chemical Composition

• Copper (Cu): 57.0 – 63.0%

• Zinc (Zn): Balance (around 33 to 38%)

• Tin (Sn): 0.9 – 2.5%

• Lead (Pb): 1.5 – 2.5%

• Iron (Fe): Up to 0.2%

• Other Trace Elements: Up to 0.5%

Mechanical Properties

• Tensile Strength: Approximately 370 – 450 MPa

• Yield Strength: Around 150 – 300 MPa

• Elongation: 15 – 25%

• Hardness: Typically 70 – 90 HRB

Physical Properties

• Density: Approximately 8.4 g/cm³

• Melting Range: Solidus ~ 890°C, Liquidus ~ 920°C

• Electrical Conductivity: Approx. 20-25% IACS

• Thermal Conductivity: Around 65-70 BTU/(ft²·hr·°F)

• Coefficient of Thermal Expansion: Around 15 x 10⁻⁶ /°C

Fabrication and Applications

• Excellent corrosion and dezincification resistance

• Good machinability considering lead content

• Suitable for hot forging and various machining processes

• Commonly used in plumbing fittings, water valves, faucets, and marine hardware