SAE-AISI 1090 Steel vs. S20910 Stainless Steel
Both SAE-AISI 1090 steel and S20910 stainless steel are iron alloys. They have 58% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 1090 steel and the bottom bar is S20910 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 220 to 280 | |
| 230 to 290 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 11 | |
| 14 to 39 |
| Fatigue Strength, MPa | 320 to 380 | |
| 310 to 460 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Reduction in Area, % | 28 to 45 | |
| 56 to 62 |
| Shear Modulus, GPa | 72 | |
| 79 |
| Shear Strength, MPa | 470 to 570 | |
| 500 to 570 |
| Tensile Strength: Ultimate (UTS), MPa | 790 to 950 | |
| 780 to 940 |
| Tensile Strength: Yield (Proof), MPa | 520 to 610 | |
| 430 to 810 |
Thermal Properties
| Latent Heat of Fusion, J/g | 240 | |
| 300 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 1080 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1420 |
| Melting Onset (Solidus), °C | 1410 | |
| 1380 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 50 | |
| 13 |
| Thermal Expansion, µm/m-K | 12 | |
| 16 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 22 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 4.8 |
| Embodied Energy, MJ/kg | 19 | |
| 68 |
| Embodied Water, L/kg | 46 | |
| 180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 82 to 91 | |
| 120 to 260 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 730 to 1000 | |
| 460 to 1640 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 28 to 34 | |
| 28 to 33 |
| Strength to Weight: Bending, points | 24 to 27 | |
| 24 to 27 |
| Thermal Diffusivity, mm2/s | 13 | |
| 3.6 |
| Thermal Shock Resistance, points | 25 to 31 | |
| 17 to 21 |
Alloy Composition
| Carbon (C), % | 0.85 to 1.0 | |
| 0 to 0.060 |
| Chromium (Cr), % | 0 | |
| 20.5 to 23.5 |
| Iron (Fe), % | 98 to 98.6 | |
| 52.1 to 62.1 |
| Manganese (Mn), % | 0.6 to 0.9 | |
| 4.0 to 6.0 |
| Molybdenum (Mo), % | 0 | |
| 1.5 to 3.0 |
| Nickel (Ni), % | 0 | |
| 11.5 to 13.5 |
| Niobium (Nb), % | 0 | |
| 0.1 to 0.3 |
| Nitrogen (N), % | 0 | |
| 0.2 to 0.4 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 | |
| 0 to 0.75 |
| Sulfur (S), % | 0 to 0.050 | |
| 0 to 0.030 |
| Vanadium (V), % | 0 | |
| 0.1 to 0.3 |