Annealed 350 Maraging Steel vs. Annealed SAE-AISI S7
Both annealed 350 maraging steel and annealed SAE-AISI S7 are iron alloys. Both are furnished in the annealed condition. They have 65% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is annealed 350 maraging steel and the bottom bar is annealed SAE-AISI S7.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 18 | |
| 21 |
| Poisson's Ratio | 0.3 | |
| 0.29 |
| Shear Modulus, GPa | 75 | |
| 74 |
| Shear Strength, MPa | 710 | |
| 420 |
| Tensile Strength: Ultimate (UTS), MPa | 1140 | |
| 670 |
| Tensile Strength: Yield (Proof), MPa | 830 | |
| 370 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 260 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1460 |
| Melting Onset (Solidus), °C | 1420 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 470 |
| Thermal Expansion, µm/m-K | 12 | |
| 12 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 39 | |
| 5.0 |
| Density, g/cm3 | 8.2 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 5.6 | |
| 2.3 |
| Embodied Energy, MJ/kg | 74 | |
| 31 |
| Embodied Water, L/kg | 160 | |
| 65 |
Common Calculations
| PREN (Pitting Resistance) | 16 | |
| 8.4 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 190 | |
| 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1770 | |
| 350 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 23 | |
| 25 |
| Strength to Weight: Axial, points | 38 | |
| 24 |
| Strength to Weight: Bending, points | 29 | |
| 22 |
| Thermal Shock Resistance, points | 35 | |
| 22 |
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 | |
| 0.45 to 0.55 |
| Chromium (Cr), % | 0 | |
| 3.0 to 3.5 |
| Cobalt (Co), % | 11.5 to 12.5 | |
| 0 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Iron (Fe), % | 61.2 to 64.6 | |
| 91.6 to 94.9 |
| Manganese (Mn), % | 0 to 0.1 | |
| 0.2 to 0.9 |
| Molybdenum (Mo), % | 4.6 to 5.2 | |
| 1.3 to 1.8 |
| Nickel (Ni), % | 18 to 19 | |
| 0 |
| Phosphorus (P), % | 0 to 0.010 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 0.1 | |
| 0.2 to 1.0 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 to 0.030 |
| Titanium (Ti), % | 1.3 to 1.6 | |
| 0 |
| Vanadium (V), % | 0 | |
| 0 to 0.3 |
| Zirconium (Zr), % | 0 to 0.020 | |
| 0 |