UNS C38500 is a corrosion-resistant brass alloy belonging to the brass family. The chemical composition of this alloy is approximately 60% copper, 39% zinc, and 1% lead. The addition of lead makes the material easier to machine. It also enhances the wear resistance, improves the machinability, and reduces the friction coefficient of the alloy.
UNS C38500 copper alloy boasts excellent physical properties such as high thermal and electrical conductivity, low magnetic permeability, and a coefficient of thermal expansion close to that of steel. The density of the material ranges from 8.44 to 8.48 g/cm3, while its melting point is around 900 to 930 °C.
UNS C38500 exhibits good mechanical properties such as high tensile strength, elongation, and toughness. The alloy can be easily formed into intricate shapes and resists deformation under high loads. The hardness of UNS C38500 is typically in the 70-90 HRB range.
Equivalent materials to UNS C38500 architectural bronze alloys are ASTM B455 alloys.
UNS C38500 copper alloy is preferred in industries that demand corrosion resistance, like marine, plumbing, and electrical. It is also used in various applications, including electronics, industrial equipment, pumps, valves, and fittings.
UNS C38500 copper alloy is an excellent material to weld. The material should be washed thoroughly with solvents like acetone or alcohol, and then the joint should be heated to 500-600 °C. The alloy can be annealed at 350-450 °C before welding. For heat treatment, the material is typically annealed at 480-575 °C for 1-3 hours for the best result.
UNS C38500 copper alloy exhibits superior corrosion resistance, making it useful in various applications where the material is continuously exposed to corrosive environments like seawater or acidic solutions. The material is rust-resistant, allowing it to endure internal and external pressures without deteriorating.
