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to Properties of steels and cast irons
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| Ductile cast iron ASTM A536 | ||||
| Chemical composition: C=3.5-3.9%, Mn=0.15-0.35%, Si=2.25-2.75%, S=0.01-0.025%, P=0.05%max | ||||
| Property | Value in metric unit | Value in US unit | ||
| Density | 6.64 *10³-7.2 *10³ | kg/m³ | 415-450 | lb/ft³ |
|---|---|---|---|---|
| Modulus of elasticity | 172 | GPa | 25000 | ksi |
| Thermal expansion (20 ºC) | 11.6*10-6 | ºCˉ¹ | 6.46*10-6 | in/(in* ºF) |
| Specific heat capacity | 506 | J/(kg*K) | 0.121 | BTU/(lb*ºF) |
| Thermal conductivity | 32.3 | W/(m*K) | 224 | BTU*in/(hr*ft²*ºF) |
| Electric resistivity | 6.0*10-7 | Ohm*m | 6.0*10-5 | Ohm*cm |
| Tensile strength | 496 | MPa | 72000 | psi |
| Yield strength | 345 | MPa | 50000 | psi |
| Elongation | 18 | % | 18 | % |
| Shear strength | 372 | MPa | 54000 | psi |
| Fatigue strength | 290 | MPa | 42000 | psi |
| Hardness (Brinell) | 130-217 | HB | 130-217 | HB |
| Wear resistance | Low | |||
| Corrosion resistance | Low | |||
| Weldability | Low | |||
| Machinability | Good | |||
| Castability | Good | |||
| Shock resistance | Medium | |||