ASTM A356 Grade 1 vs. ASTM A27 Cast Steel
Both ASTM A356 grade 1 and ASTM A27 cast steel are iron alloys.
For each property being compared, the top bar is ASTM A356 grade 1 and the bottom bar is ASTM A27 cast steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 23 | |
| 25 to 27 |
| Fatigue Strength, MPa | 200 | |
| 170 to 230 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Reduction in Area, % | 39 | |
| 34 to 40 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 550 | |
| 460 to 550 |
| Tensile Strength: Yield (Proof), MPa | 280 | |
| 230 to 310 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 400 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1460 |
| Melting Onset (Solidus), °C | 1420 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 51 | |
| 52 |
| Thermal Expansion, µm/m-K | 12 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.0 | |
| 7.0 to 7.1 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.1 | |
| 8.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 1.8 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 1.4 |
| Embodied Energy, MJ/kg | 18 | |
| 18 |
| Embodied Water, L/kg | 45 | |
| 45 to 46 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 | |
| 96 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 210 | |
| 140 to 260 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 20 | |
| 16 to 20 |
| Strength to Weight: Bending, points | 19 | |
| 17 to 19 |
| Thermal Diffusivity, mm2/s | 14 | |
| 14 |
| Thermal Shock Resistance, points | 18 | |
| 15 to 18 |