EN 1.4938 Stainless Steel vs. SAE-AISI D2 Steel
Both EN 1.4938 stainless steel and SAE-AISI D2 steel are iron alloys. They have a very high 97% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is EN 1.4938 stainless steel and the bottom bar is SAE-AISI D2 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 16 to 17 | |
| 5.0 to 16 |
| Fatigue Strength, MPa | 390 to 520 | |
| 310 to 860 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 76 | |
| 75 |
| Shear Strength, MPa | 540 to 630 | |
| 460 to 1160 |
| Tensile Strength: Ultimate (UTS), MPa | 870 to 1030 | |
| 760 to 2000 |
| Tensile Strength: Yield (Proof), MPa | 640 to 870 | |
| 470 to 1510 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 270 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1440 |
| Melting Onset (Solidus), °C | 1420 | |
| 1390 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 30 | |
| 31 |
| Thermal Expansion, µm/m-K | 11 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.9 | |
| 4.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.3 | |
| 5.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 10 | |
| 8.0 |
| Density, g/cm3 | 7.8 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 3.3 | |
| 3.4 |
| Embodied Energy, MJ/kg | 47 | |
| 50 |
| Embodied Water, L/kg | 110 | |
| 100 |
Common Calculations
| PREN (Pitting Resistance) | 18 | |
| 15 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 to 160 | |
| 92 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1050 to 1920 | |
| 570 to 5940 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 31 to 37 | |
| 27 to 72 |
| Strength to Weight: Bending, points | 26 to 29 | |
| 24 to 46 |
| Thermal Diffusivity, mm2/s | 8.1 | |
| 8.3 |
| Thermal Shock Resistance, points | 30 to 35 | |
| 25 to 67 |
Alloy Composition
| Carbon (C), % | 0.080 to 0.15 | |
| 1.4 to 1.6 |
| Chromium (Cr), % | 11 to 12.5 | |
| 11 to 13 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Iron (Fe), % | 80.5 to 84.8 | |
| 81.3 to 86.9 |
| Manganese (Mn), % | 0.4 to 0.9 | |
| 0 to 0.6 |
| Molybdenum (Mo), % | 1.5 to 2.0 | |
| 0.7 to 1.2 |
| Nickel (Ni), % | 2.0 to 3.0 | |
| 0 to 0.3 |
| Nitrogen (N), % | 0.020 to 0.040 | |
| 0 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.030 |
| Vanadium (V), % | 0.25 to 0.4 | |
| 0 to 1.1 |