C36500

C36500, also known as Leaded Muntz Metal or CW610N, is a brass alloy known for its excellent machinability, good corrosion resistance, and moderate strength. It is copper alloyed primarily with zinc, tin, and lead, making it suitable for a wide range of applications, including condensers, evaporators, tubesheets, heat exchangers, fasteners, and architectural components.

Chemical Composition

• Copper (Cu): 58.00 – 61.00%

• Lead (Pb): 0.25 – 0.70%

• Tin (Sn): 0.25 – 1.00%

• Iron (Fe): Up to 0.15%

• Zinc (Zn): Remainder (Balance)

Mechanical Properties

• Tensile Strength: Approximately 400 – 500 MPa

• Yield Strength: Approximately 160 – 320 MPa

• Elongation: About 30 – 40%

• Hardness: Approximately 75 Rockwell F scale

Physical Properties

• Density: 8.41 g/cm³

• Electrical Conductivity: Approximately 28% IACS at 68°F

• Thermal Conductivity: 71 BTU/(ft²·hr·°F) at 68°F

• Melting Point: Liquidus ~1650°F (899°C), Solidus ~1630°F (887°C)

• Coefficient of Thermal Expansion: 11.6 x 10⁻⁶ /°F

Fabrication and Applications

• Excellent soldering and good brazing characteristics

• Fair gas-shielded arc welding and oxyacetylene welding

• Recommended for forgings, rods, bars, and various industrial components

• Preferred alloy for condenser tube plates, evaporators, tubesheets, and heat exchangers due to corrosion resistance and machinability