Chemical composition and properties: C75400 copper plate is a copper-nickel-zinc alloy, whose main components are copper (Cu) 62.0-65.0%, nickel + cobalt (Ni + Co) 13.5-16.5%, the balance of zinc (Zn). This alloy has a beautiful silvery-white appearance and is commonly known as German silver or Chinese silver.C75400 copper plate possesses high strength and corrosion resistance, is malleable, and can withstand pressure machining well in both the hot and cold states. However, its machinability and weldability are poor.
Widely Used: Due to its excellent mechanical properties and corrosion resistance, C75400 copper sheet is widely used in a variety of industrial fields, such as electronic crystal shells, daily decorations, tableware, medical equipment, construction, etc. It is also suitable for use in humid conditions. It is also suitable for instrument parts working under humid conditions and in strong corrosive media, as well as steam fittings and waterway fittings. In addition, C75400 copper plate is also commonly used in the manufacture of parts such as springs and shrapnel.
| Melting Point – Liquidus°F | 1970 |
|---|---|
| Melting Point – Solidus°F | 1900 |
| Densitylb/cu in. at 68°F | 0.314 |
| Specific Gravity | 8.7 |
| Electrical Conductivity% IACS at 68°F | 7 |
| Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F | 21 |
| Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) | 9 |
| Specific Heat CapacityBtu/ lb /°F at 68°F | 0.09 |
| Modulus of Elasticity in Tensionksi | 18000 |
| Modulus of Rigidityksi | 6800 |
