SAE-AISI 9310 Steel vs. S31730 Stainless Steel
Both SAE-AISI 9310 steel and S31730 stainless steel are iron alloys. They have 62% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 9310 steel and the bottom bar is S31730 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 540 to 610 | |
| 180 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 17 to 19 | |
| 40 |
| Fatigue Strength, MPa | 300 to 390 | |
| 170 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Rockwell B Hardness | 240 to 270 | |
| 78 |
| Shear Modulus, GPa | 73 | |
| 77 |
| Shear Strength, MPa | 510 to 570 | |
| 370 |
| Tensile Strength: Ultimate (UTS), MPa | 820 to 910 | |
| 540 |
| Tensile Strength: Yield (Proof), MPa | 450 to 570 | |
| 200 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 440 | |
| 990 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1430 |
| Melting Onset (Solidus), °C | 1420 | |
| 1390 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Expansion, µm/m-K | 13 | |
| 16 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 4.4 | |
| 24 |
| Density, g/cm3 | 7.9 | |
| 8.0 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 4.6 |
| Embodied Energy, MJ/kg | 24 | |
| 63 |
| Embodied Water, L/kg | 57 | |
| 180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 to 150 | |
| 170 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 540 to 860 | |
| 99 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 29 to 32 | |
| 19 |
| Strength to Weight: Bending, points | 25 to 27 | |
| 18 |
| Thermal Shock Resistance, points | 24 to 27 | |
| 12 |
Alloy Composition
| Carbon (C), % | 0.080 to 0.13 | |
| 0 to 0.030 |
| Chromium (Cr), % | 1.0 to 1.4 | |
| 17 to 19 |
| Copper (Cu), % | 0 | |
| 4.0 to 5.0 |
| Iron (Fe), % | 93.8 to 95.2 | |
| 52.4 to 61 |
| Manganese (Mn), % | 0.45 to 0.65 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 0.080 to 0.15 | |
| 3.0 to 4.0 |
| Nickel (Ni), % | 3.0 to 3.5 | |
| 15 to 16.5 |
| Nitrogen (N), % | 0 | |
| 0 to 0.045 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 to 0.040 |
| Silicon (Si), % | 0.2 to 0.35 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.012 | |
| 0 to 0.010 |