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(submitted by the website administration)
| Cast copper alloy C84400 (Valve Metal) | ||||
| Chemical composition: Zn=9%, Pb=7%, Sn=3%, Cu=81% | ||||
| Property | Value in metric unit | Value in US unit | ||
| Density | 8.69 *10³ | kg/m³ | 542 | lb/ft³ |
|---|---|---|---|---|
| Modulus of elasticity | 89.6 | GPa | 13000 | ksi |
| Thermal expansion (20 ºC) | 18.0*10-6 | ºCˉ¹ | 10.0*10-6 | in/(in* ºF) |
| Specific heat capacity | 377 | J/(kg*K) | 0.090 | BTU/(lb*ºF) |
| Thermal conductivity | 72.4 | W/(m*K) | 502 | BTU*in/(hr*ft²*ºF) |
| Electric resistivity | 10.5*10-8 | Ohm*m | 10.5*10-6 | Ohm*cm |
| Tensile strength (sand cast) | 234 | MPa | 34000 | psi |
| Yield strength (sand cast) | 103 | MPa | 15000 | psi |
| Elongation (sand cast) | 26 | % | 26 | % |
| Hardness (sand cast) | 55 | HB(500) | 55 | HB(500) |
| Liquidus temperature | 1004 | ºC | 1840 | ºF |
| Solidus temperature | 843 | ºC | 1549 | ºF |
