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| Cast copper alloy C90500 (Gun Metal) | ||||
| Chemical composition: Sn=10.0%, Zn=2.0%, Cu=88% | ||||
| Property | Value in metric unit | Value in US unit | ||
| Density | 8.72 *10³ | kg/m³ | 544 | lb/ft³ |
|---|---|---|---|---|
| Modulus of elasticity | 103 | GPa | 15000 | ksi |
| Thermal expansion (20 ºC) | 19.8*10-6 | ºCˉ¹ | 11.0*10-6 | in/(in* ºF) |
| Specific heat capacity | 377 | J/(kg*K) | 0.090 | BTU/(lb*ºF) |
| Thermal conductivity | 74.8 | W/(m*K) | 518 | BTU*in/(hr*ft²*ºF) |
| Electric resistivity | 15.6*10-8 | Ohm*m | 15.6*10-6 | Ohm*cm |
| Tensile strength (sand cast) | 310 | MPa | 45000 | psi |
| Yield strength (sand cast) | 152 | MPa | 22000 | psi |
| Elongation (sand cast) | 25 | % | 25 | % |
| Fatigue strength (sand cast) | 90 | MPa | 13000 | psi |
| Hardness (sand cast) | 75 | HB(500) | 75 | HB(500) |
| Liquidus temperature | 999 | ºC | 1830 | ºF |
| Solidus temperature | 854 | ºC | 1570 | ºF |