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| Wrought copper alloy C28000 (Muntz Metal) | ||||
| Chemical composition: Zn=40%, Cu=60% | ||||
| Property | Value in metric unit | Value in US unit | ||
| Density | 8.39 *10³ | kg/m³ | 524 | lb/ft³ |
|---|---|---|---|---|
| Modulus of elasticity | 103 | GPa | 15000 | ksi |
| Thermal expansion (20 ºC) | 20.9*10-6 | ºCˉ¹ | 11.6*10-6 | in/(in* ºF) |
| Specific heat capacity | 377 | J/(kg*K) | 0.090 | BTU/(lb*ºF) |
| Thermal conductivity | 123 | W/(m*K) | 852 | BTU*in/(hr*ft²*ºF) |
| Electric resistivity | 6.15*10-8 | Ohm*m | 6.15*10-6 | Ohm*cm |
| Tensile strength (annealed) | 372 | MPa | 54000 | psi |
| Yield strength (annealed) | 145 | MPa | 21000 | psi |
| Elongation (annealed) | 45 | % | 45 | % |
| Shear strength (annealed) | 276 | MPa | 40000 | psi |
| Hardness (annealed) | 46 | R30T | 46 | R30T |
| Tensile strength (cold work) | 483 | MPa | 70000 | psi |
| Yield strength (cold work) | 345 | MPa | 50000 | psi |
| Elongation (cold work) | 10 | % | 10 | % |
| Shear strength (cold work) | 303 | MPa | 44000 | psi |
| Hardness (cold work) | 67 | R30T | 67 | R30T |
| Annealing temperature | 425-600 | ºC | 800-1100 | ºF |
| Liquidus temperature | 905 | ºC | 1660 | ºF |
| Solidus temperature | 900 | ºC | 1650 | ºF |
