SAE-AISI 1021 Steel vs. AISI 201 Stainless Steel
Both SAE-AISI 1021 steel and AISI 201 stainless steel are iron alloys. They have 72% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 1021 steel and the bottom bar is AISI 201 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 130 to 150 | |
| 200 to 440 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 17 to 27 | |
| 4.6 to 51 |
| Fatigue Strength, MPa | 190 to 300 | |
| 280 to 600 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 77 |
| Shear Strength, MPa | 310 to 320 | |
| 450 to 840 |
| Tensile Strength: Ultimate (UTS), MPa | 480 to 530 | |
| 650 to 1450 |
| Tensile Strength: Yield (Proof), MPa | 260 to 450 | |
| 300 to 1080 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 880 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1410 |
| Melting Onset (Solidus), °C | 1420 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 52 | |
| 15 |
| Thermal Expansion, µm/m-K | 12 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.0 | |
| 2.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.0 | |
| 2.9 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 12 |
| Density, g/cm3 | 7.9 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 2.6 |
| Embodied Energy, MJ/kg | 18 | |
| 38 |
| Embodied Water, L/kg | 46 | |
| 140 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 84 to 110 | |
| 61 to 340 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 180 to 530 | |
| 230 to 2970 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 17 to 19 | |
| 23 to 52 |
| Strength to Weight: Bending, points | 17 to 18 | |
| 22 to 37 |
| Thermal Diffusivity, mm2/s | 14 | |
| 4.0 |
| Thermal Shock Resistance, points | 15 to 17 | |
| 14 to 32 |
Alloy Composition
| Carbon (C), % | 0.18 to 0.23 | |
| 0 to 0.15 |
| Chromium (Cr), % | 0 | |
| 16 to 18 |
| Iron (Fe), % | 98.8 to 99.22 | |
| 67.5 to 75 |
| Manganese (Mn), % | 0.6 to 0.9 | |
| 5.5 to 7.5 |
| Nickel (Ni), % | 0 | |
| 3.5 to 5.5 |
| Nitrogen (N), % | 0 | |
| 0 to 0.25 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.060 |
| Silicon (Si), % | 0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.050 | |
| 0 to 0.030 |