Annealed ASTM B780 Alloy vs. Annealed 250 Maraging Steel
Annealed ASTM B780 alloy belongs to the otherwise unclassified metals classification, while annealed 250 maraging steel belongs to the iron alloys. There are 16 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.
For each property being compared, the top bar is annealed ASTM B780 alloy and the bottom bar is annealed 250 maraging steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 83 | |
| 190 |
| Elongation at Break, % | 9.1 | |
| 17 |
| Poisson's Ratio | 0.36 | |
| 0.3 |
| Shear Modulus, GPa | 30 | |
| 75 |
| Shear Strength, MPa | 200 | |
| 600 |
| Tensile Strength: Ultimate (UTS), MPa | 330 | |
| 970 |
Thermal Properties
| Latent Heat of Fusion, J/g | 140 | |
| 270 |
| Melting Completion (Liquidus), °C | 860 | |
| 1480 |
| Specific Heat Capacity, J/kg-K | 270 | |
| 450 |
| Thermal Expansion, µm/m-K | 18 | |
| 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 10 | |
| 8.2 |
Common Calculations
| Stiffness to Weight: Axial, points | 4.5 | |
| 13 |
| Stiffness to Weight: Bending, points | 14 | |
| 23 |
| Strength to Weight: Axial, points | 9.1 | |
| 33 |
| Strength to Weight: Bending, points | 11 | |
| 26 |
| Thermal Shock Resistance, points | 16 | |
| 29 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0.050 to 0.15 |
| Boron (B), % | 0 | |
| 0 to 0.0030 |
| Cadmium (Cd), % | 0 to 0.050 | |
| 0 |
| Calcium (Ca), % | 0 | |
| 0 to 0.050 |
| Carbon (C), % | 0 | |
| 0 to 0.030 |
| Cobalt (Co), % | 0 | |
| 7.0 to 8.5 |
| Copper (Cu), % | 23.5 to 25.7 | |
| 0 |
| Iron (Fe), % | 0 to 0.050 | |
| 66.3 to 71.1 |
| Lead (Pb), % | 0 to 0.030 | |
| 0 |
| Manganese (Mn), % | 0 | |
| 0 to 0.1 |
| Molybdenum (Mo), % | 0 | |
| 4.6 to 5.2 |
| Nickel (Ni), % | 0.35 to 0.65 | |
| 17 to 19 |
| Phosphorus (P), % | 0 | |
| 0 to 0.010 |
| Silicon (Si), % | 0 | |
| 0 to 0.1 |
| Silver (Ag), % | 74 to 76 | |
| 0 |
| Sulfur (S), % | 0 | |
| 0 to 0.010 |
| Titanium (Ti), % | 0 | |
| 0.3 to 0.5 |
| Zinc (Zn), % | 0 to 0.060 | |
| 0 |
| Zirconium (Zr), % | 0 | |
| 0 to 0.020 |