C37700

C37700, also known as forging brass or alloy C377, is a leaded brass alloy designed for hot working and machining applications. It is noted for excellent forgeability, good machinability, and corrosion resistance. This alloy is widely used for components requiring durability and complex shaping, such as forged parts in mechanical and industrial applications.

Chemical Composition

• Copper (Cu): 58.0 – 61.0%

• Lead (Pb): 1.5 – 2.5%

• Iron (Fe): Up to 0.30%

• Zinc (Zn): Balance (remainder)

• Other elements (total): Up to 0.50%

Mechanical Properties

• Tensile Strength: Typically around 310–365 MPa

• Yield Strength: Approximately 140–220 MPa

• Elongation: Typically 15–25%

• Hardness: Approximately 45–85 HRB

Physical Properties

• Density: 8.44 g/cm³

• Melting Point: Solidus ~1620°F (882°C), Liquidus ~1640°F (893°C)

• Electrical Conductivity: About 27% IACS at 68°F (20°C)

• Thermal Conductivity: Approximately 69 BTU/(ft²·hr·°F)

Fabrication Properties

• Excellent forgeability at hot working temperatures (1200–1500°F)

• Good machinability for leaded brasses

• Excellent for soldering and brazing

• Welding is generally not recommended or limited to butt welding

Typical Applications

• Hot-forged components

• Electrical fittings

• Industrial hardware

• Plumbing fixtures

• Automotive parts