SAE-AISI 4320 Steel vs. S66286 Stainless Steel
Both SAE-AISI 4320 steel and S66286 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 (3, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 4320 steel and the bottom bar is S66286 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 21 to 29 | |
| 17 to 40 |
| Fatigue Strength, MPa | 320 | |
| 240 to 410 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 75 |
| Shear Strength, MPa | 370 to 500 | |
| 420 to 630 |
| Tensile Strength: Ultimate (UTS), MPa | 570 to 790 | |
| 620 to 1020 |
| Tensile Strength: Yield (Proof), MPa | 430 to 460 | |
| 280 to 670 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 300 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 920 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1430 |
| Melting Onset (Solidus), °C | 1420 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 46 | |
| 15 |
| Thermal Expansion, µm/m-K | 11 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 | |
| 1.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.5 | |
| 2.2 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 3.4 | |
| 26 |
| Density, g/cm3 | 7.9 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 1.7 | |
| 6.0 |
| Embodied Energy, MJ/kg | 22 | |
| 87 |
| Embodied Water, L/kg | 52 | |
| 170 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 to 150 | |
| 150 to 200 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 480 to 560 | |
| 190 to 1150 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 20 to 28 | |
| 22 to 36 |
| Strength to Weight: Bending, points | 19 to 24 | |
| 20 to 28 |
| Thermal Diffusivity, mm2/s | 13 | |
| 4.0 |
| Thermal Shock Resistance, points | 19 to 27 | |
| 13 to 22 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0 to 0.35 |
| Boron (B), % | 0 | |
| 0.0010 to 0.010 |
| Carbon (C), % | 0.17 to 0.22 | |
| 0 to 0.080 |
| Chromium (Cr), % | 0.4 to 0.6 | |
| 13.5 to 16 |
| Iron (Fe), % | 95.8 to 97 | |
| 49.1 to 59.5 |
| Manganese (Mn), % | 0.45 to 0.65 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 0.2 to 0.3 | |
| 1.0 to 1.5 |
| Nickel (Ni), % | 1.7 to 2.0 | |
| 24 to 27 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.040 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 to 0.030 |
| Titanium (Ti), % | 0 | |
| 1.9 to 2.4 |
| Vanadium (V), % | 0 | |
| 0.1 to 0.5 |