SAE-AISI 1064 Steel vs. S81921 Stainless Steel
Both SAE-AISI 1064 steel and S81921 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 (4, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 1064 steel and the bottom bar is S81921 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 220 | |
| 260 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 12 to 13 | |
| 29 |
| Fatigue Strength, MPa | 300 | |
| 370 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 72 | |
| 79 |
| Shear Strength, MPa | 430 to 440 | |
| 460 |
| Tensile Strength: Ultimate (UTS), MPa | 720 to 730 | |
| 710 |
| Tensile Strength: Yield (Proof), MPa | 470 to 480 | |
| 500 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 990 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1430 |
| Melting Onset (Solidus), °C | 1420 | |
| 1390 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 51 | |
| 15 |
| Thermal Expansion, µm/m-K | 11 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.0 | |
| 2.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.1 | |
| 2.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 14 |
| Density, g/cm3 | 7.8 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 2.9 |
| Embodied Energy, MJ/kg | 19 | |
| 41 |
| Embodied Water, L/kg | 46 | |
| 150 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 79 to 81 | |
| 180 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 600 to 630 | |
| 630 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 25 to 26 | |
| 25 |
| Strength to Weight: Bending, points | 23 | |
| 23 |
| Thermal Diffusivity, mm2/s | 14 | |
| 4.0 |
| Thermal Shock Resistance, points | 25 | |
| 20 |
Alloy Composition
| Carbon (C), % | 0.6 to 0.7 | |
| 0 to 0.030 |
| Chromium (Cr), % | 0 | |
| 19 to 22 |
| Iron (Fe), % | 98.4 to 98.9 | |
| 66.7 to 75.9 |
| Manganese (Mn), % | 0.5 to 0.8 | |
| 2.0 to 4.0 |
| Molybdenum (Mo), % | 0 | |
| 1.0 to 2.0 |
| Nickel (Ni), % | 0 | |
| 2.0 to 4.0 |
| Nitrogen (N), % | 0 | |
| 0.14 to 0.2 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.050 | |
| 0 to 0.030 |