ASTM Grade 70-50-05 vs. Ductile Cast Iron
ASTM grade 70-50-05 is a variant of ductile cast iron. The properties of the parent material encompass the values of all of its variants.
For each property being compared, the top bar is ASTM grade 70-50-05 and the bottom bar is ductile cast iron.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 200 | |
| 160 to 310 |
| Elastic (Young's, Tensile) Modulus, GPa | 180 | |
| 170 to 180 |
| Elongation at Break, % | 6.1 | |
| 2.1 to 20 |
| Fracture Toughness, MPa-m1/2 | 25 | |
| 14 to 30 |
| Poisson's Ratio | 0.29 | |
| 0.28 to 0.31 |
| Shear Modulus, GPa | 70 | |
| 64 to 70 |
| Shear Strength, MPa | 450 | |
| 420 to 800 |
| Tensile Strength: Ultimate (UTS), MPa | 530 | |
| 460 to 920 |
| Tensile Strength: Yield (Proof), MPa | 370 | |
| 310 to 670 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 270 |
| Maximum Temperature: Mechanical, °C | 290 | |
| 290 |
| Melting Completion (Liquidus), °C | 1160 | |
| 1160 |
| Melting Onset (Solidus), °C | 1120 | |
| 1120 |
| Specific Heat Capacity, J/kg-K | 490 | |
| 490 |
| Thermal Conductivity, W/m-K | 35 | |
| 31 to 36 |
| Thermal Expansion, µm/m-K | 11 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 | |
| 7.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 9.4 | |
| 8.8 to 9.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.9 | |
| 1.9 |
| Density, g/cm3 | 7.1 | |
| 7.1 to 7.5 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 1.5 |
| Embodied Energy, MJ/kg | 21 | |
| 21 |
| Embodied Water, L/kg | 43 | |
| 43 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 29 | |
| 17 to 80 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 380 | |
| 280 to 1330 |
| Stiffness to Weight: Axial, points | 14 | |
| 12 to 14 |
| Stiffness to Weight: Bending, points | 26 | |
| 24 to 26 |
| Strength to Weight: Axial, points | 21 | |
| 17 to 35 |
| Strength to Weight: Bending, points | 21 | |
| 18 to 29 |
| Thermal Diffusivity, mm2/s | 10 | |
| 8.9 to 10 |
| Thermal Shock Resistance, points | 19 | |
| 17 to 35 |
Alloy Composition
| Carbon (C), % | 3.0 to 3.5 | |
| 3.0 to 3.5 |
| Iron (Fe), % | 93.7 to 95.5 | |
| 93.7 to 95.5 |
| Phosphorus (P), % | 0 to 0.080 | |
| 0 to 0.080 |
| Silicon (Si), % | 1.5 to 2.8 | |
| 1.5 to 2.8 |