SAE-AISI 1026 Steel vs. S21640 Stainless Steel
Both SAE-AISI 1026 steel and S21640 stainless steel are iron alloys. They have 69% 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 1026 steel and the bottom bar is S21640 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 140 to 160 | |
| 230 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 17 to 27 | |
| 46 |
| Fatigue Strength, MPa | 200 to 310 | |
| 320 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 78 |
| Shear Strength, MPa | 320 to 340 | |
| 520 |
| Tensile Strength: Ultimate (UTS), MPa | 500 to 550 | |
| 740 |
| Tensile Strength: Yield (Proof), MPa | 270 to 470 | |
| 350 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 940 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1430 |
| Melting Onset (Solidus), °C | 1420 | |
| 1380 |
| 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 | |
| 2.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.0 | |
| 2.8 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 17 |
| Density, g/cm3 | 7.9 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 3.6 |
| Embodied Energy, MJ/kg | 18 | |
| 51 |
| Embodied Water, L/kg | 46 | |
| 150 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 89 to 110 | |
| 280 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 200 to 580 | |
| 300 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 18 to 20 | |
| 27 |
| Strength to Weight: Bending, points | 18 to 19 | |
| 23 |
| Thermal Diffusivity, mm2/s | 14 | |
| 4.0 |
| Thermal Shock Resistance, points | 16 to 18 | |
| 16 |
Alloy Composition
| Carbon (C), % | 0.22 to 0.28 | |
| 0 to 0.080 |
| Chromium (Cr), % | 0 | |
| 17.5 to 19.5 |
| Iron (Fe), % | 98.7 to 99.18 | |
| 63 to 74.3 |
| Manganese (Mn), % | 0.6 to 0.9 | |
| 3.5 to 6.5 |
| Molybdenum (Mo), % | 0 | |
| 0.5 to 2.0 |
| Nickel (Ni), % | 0 | |
| 4.0 to 6.5 |
| Niobium (Nb), % | 0 | |
| 0.1 to 1.0 |
| Nitrogen (N), % | 0 | |
| 0.080 to 0.3 |
| 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 |