SAE-AISI 1020 Steel vs. S31727 Stainless Steel
Both SAE-AISI 1020 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 1020 steel and the bottom bar is S31727 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 120 to 130 | |
| 190 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 17 to 28 | |
| 40 |
| Fatigue Strength, MPa | 180 to 250 | |
| 240 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Reduction in Area, % | 45 to 57 | |
| 56 |
| Shear Modulus, GPa | 73 | |
| 78 |
| Shear Strength, MPa | 280 | |
| 430 |
| Tensile Strength: Ultimate (UTS), MPa | 430 to 460 | |
| 630 |
| Tensile Strength: Yield (Proof), MPa | 240 to 380 | |
| 270 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 1010 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1440 |
| Melting Onset (Solidus), °C | 1420 | |
| 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 | 7.9 | |
| 8.0 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 4.7 |
| Embodied Energy, MJ/kg | 18 | |
| 64 |
| Embodied Water, L/kg | 45 | |
| 180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 72 to 100 | |
| 200 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 150 to 380 | |
| 190 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 15 to 16 | |
| 22 |
| Strength to Weight: Bending, points | 16 to 17 | |
| 20 |
| Thermal Shock Resistance, points | 13 to 14 | |
| 14 |
Alloy Composition
| Carbon (C), % | 0.18 to 0.23 | |
| 0 to 0.030 |
| Chromium (Cr), % | 0 | |
| 17.5 to 19 |
| Copper (Cu), % | 0 | |
| 2.8 to 4.0 |
| Iron (Fe), % | 99.08 to 99.52 | |
| 53.7 to 61.3 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 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 |