Grade 250 Maraging Steel vs. SAE-AISI O7 Steel
Both grade 250 maraging steel and SAE-AISI O7 steel are iron alloys. They have 69% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is grade 250 maraging steel and the bottom bar is SAE-AISI O7 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Poisson's Ratio | 0.3 | |
| 0.29 |
| Shear Modulus, GPa | 75 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 970 to 1800 | |
| 680 to 2110 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 250 |
| Melting Completion (Liquidus), °C | 1480 | |
| 1480 |
| Melting Onset (Solidus), °C | 1430 | |
| 1430 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 470 |
| Thermal Expansion, µm/m-K | 12 | |
| 12 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 32 | |
| 6.0 |
| Density, g/cm3 | 8.2 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 4.9 | |
| 2.3 |
| Embodied Energy, MJ/kg | 65 | |
| 33 |
| Embodied Water, L/kg | 140 | |
| 52 |
Common Calculations
| PREN (Pitting Resistance) | 16 | |
| 3.6 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 23 | |
| 24 |
| Strength to Weight: Axial, points | 33 to 61 | |
| 24 to 74 |
| Strength to Weight: Bending, points | 26 to 40 | |
| 22 to 46 |
| Thermal Shock Resistance, points | 29 to 54 | |
| 23 to 70 |
Alloy Composition
| Aluminum (Al), % | 0.050 to 0.15 | |
| 0 |
| Boron (B), % | 0 to 0.0030 | |
| 0 |
| Calcium (Ca), % | 0 to 0.050 | |
| 0 |
| Carbon (C), % | 0 to 0.030 | |
| 1.1 to 1.3 |
| Chromium (Cr), % | 0 | |
| 0.35 to 0.85 |
| Cobalt (Co), % | 7.0 to 8.5 | |
| 0 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Iron (Fe), % | 66.3 to 71.1 | |
| 92.9 to 97.6 |
| Manganese (Mn), % | 0 to 0.1 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 4.6 to 5.2 | |
| 0 to 0.3 |
| Nickel (Ni), % | 17 to 19 | |
| 0 to 0.3 |
| Phosphorus (P), % | 0 to 0.010 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 0.1 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 to 0.030 |
| Titanium (Ti), % | 0.3 to 0.5 | |
| 0 |
| Tungsten (W), % | 0 | |
| 1.0 to 2.0 |
| Vanadium (V), % | 0 | |
| 0 to 0.4 |
| Zirconium (Zr), % | 0 to 0.020 | |
| 0 |