SAE-AISI D2 Steel vs. AISI 431 Stainless Steel
Both SAE-AISI D2 steel and AISI 431 stainless steel are iron alloys. They have a moderately high 94% of their average alloy composition in common. There are 30 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 D2 steel and the bottom bar is AISI 431 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 5.0 to 16 | |
| 15 to 17 |
| Fatigue Strength, MPa | 310 to 860 | |
| 430 to 610 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 75 | |
| 77 |
| Shear Strength, MPa | 460 to 1160 | |
| 550 to 840 |
| Tensile Strength: Ultimate (UTS), MPa | 760 to 2000 | |
| 890 to 1380 |
| Tensile Strength: Yield (Proof), MPa | 470 to 1510 | |
| 710 to 1040 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 280 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1510 |
| Melting Onset (Solidus), °C | 1390 | |
| 1450 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 31 | |
| 26 |
| Thermal Expansion, µm/m-K | 11 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 4.3 | |
| 2.6 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 5.1 | |
| 3.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 8.0 | |
| 9.0 |
| Density, g/cm3 | 7.7 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 3.4 | |
| 2.2 |
| Embodied Energy, MJ/kg | 50 | |
| 31 |
| Embodied Water, L/kg | 100 | |
| 120 |
Common Calculations
| PREN (Pitting Resistance) | 15 | |
| 16 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 92 to 100 | |
| 140 to 180 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 570 to 5940 | |
| 1270 to 2770 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 27 to 72 | |
| 32 to 50 |
| Strength to Weight: Bending, points | 24 to 46 | |
| 27 to 36 |
| Thermal Diffusivity, mm2/s | 8.3 | |
| 7.0 |
| Thermal Shock Resistance, points | 25 to 67 | |
| 28 to 43 |
Alloy Composition
| Carbon (C), % | 1.4 to 1.6 | |
| 0 to 0.2 |
| Chromium (Cr), % | 11 to 13 | |
| 15 to 17 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 |
| Iron (Fe), % | 81.3 to 86.9 | |
| 78.2 to 83.8 |
| Manganese (Mn), % | 0 to 0.6 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0.7 to 1.2 | |
| 0 |
| Nickel (Ni), % | 0 to 0.3 | |
| 1.3 to 2.5 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.6 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |
| Vanadium (V), % | 0 to 1.1 | |
| 0 |