ASTM A732 Cast Steel vs. ASTM B780 Alloy
ASTM A732 cast steel belongs to the iron alloys classification, while ASTM B780 alloy belongs to the otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.
For each property being compared, the top bar is ASTM A732 cast steel and the bottom bar is ASTM B780 alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 83 |
| Elongation at Break, % | 4.0 to 25 | |
| 1.1 to 9.1 |
| Poisson's Ratio | 0.29 | |
| 0.36 |
| Shear Modulus, GPa | 72 to 73 | |
| 30 |
| Tensile Strength: Ultimate (UTS), MPa | 460 to 1470 | |
| 330 to 590 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 to 260 | |
| 140 |
| Specific Heat Capacity, J/kg-K | 470 to 480 | |
| 270 |
| Thermal Expansion, µm/m-K | 13 | |
| 18 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.1 to 7.7 | |
| 70 to 76 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.2 to 8.9 | |
| 62 to 68 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.8 to 7.9 | |
| 10 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 4.5 |
| Stiffness to Weight: Bending, points | 24 | |
| 14 |
| Strength to Weight: Axial, points | 16 to 52 | |
| 9.1 to 16 |
| Strength to Weight: Bending, points | 17 to 37 | |
| 11 to 15 |
| Thermal Shock Resistance, points | 14 to 43 | |
| 16 to 29 |