SAE-AISI 1090 Steel vs. S31727 Stainless Steel
Both SAE-AISI 1090 steel and S31727 stainless steel are iron alloys. They have 58% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 1090 steel and the bottom bar is S31727 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 220 to 280 | |
| 190 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 11 | |
| 40 |
| Fatigue Strength, MPa | 320 to 380 | |
| 240 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Reduction in Area, % | 28 to 45 | |
| 56 |
| Shear Modulus, GPa | 72 | |
| 78 |
| Shear Strength, MPa | 470 to 570 | |
| 430 |
| Tensile Strength: Ultimate (UTS), MPa | 790 to 950 | |
| 630 |
| Tensile Strength: Yield (Proof), MPa | 520 to 610 | |
| 270 |
Thermal Properties
| Latent Heat of Fusion, J/g | 240 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 1010 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1440 |
| Melting Onset (Solidus), °C | 1410 | |
| 1390 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Expansion, µm/m-K | 12 | |
| 16 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 24 |
| Density, g/cm3 | 7.8 | |
| 8.0 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 4.7 |
| Embodied Energy, MJ/kg | 19 | |
| 64 |
| Embodied Water, L/kg | 46 | |
| 180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 82 to 91 | |
| 200 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 730 to 1000 | |
| 190 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 28 to 34 | |
| 22 |
| Strength to Weight: Bending, points | 24 to 27 | |
| 20 |
| Thermal Shock Resistance, points | 25 to 31 | |
| 14 |
Alloy Composition
| Carbon (C), % | 0.85 to 1.0 | |
| 0 to 0.030 |
| Chromium (Cr), % | 0 | |
| 17.5 to 19 |
| Copper (Cu), % | 0 | |
| 2.8 to 4.0 |
| Iron (Fe), % | 98 to 98.6 | |
| 53.7 to 61.3 |
| Manganese (Mn), % | 0.6 to 0.9 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 3.8 to 4.5 |
| Nickel (Ni), % | 0 | |
| 14.5 to 16.5 |
| Nitrogen (N), % | 0 | |
| 0.15 to 0.21 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.050 | |
| 0 to 0.030 |