EN 1.4421 Stainless Steel vs. SAE-AISI D4 Steel
Both EN 1.4421 stainless steel and SAE-AISI D4 steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is EN 1.4421 stainless steel and the bottom bar is SAE-AISI D4 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 11 to 17 | |
| 8.4 to 15 |
| Fatigue Strength, MPa | 380 to 520 | |
| 310 to 920 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 77 | |
| 74 |
| Tensile Strength: Ultimate (UTS), MPa | 880 to 1100 | |
| 760 to 2060 |
| Tensile Strength: Yield (Proof), MPa | 620 to 950 | |
| 470 to 1540 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 270 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1430 |
| Melting Onset (Solidus), °C | 1400 | |
| 1380 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 16 | |
| 31 |
| Thermal Expansion, µm/m-K | 10 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.2 | |
| 4.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.5 | |
| 5.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 12 | |
| 8.0 |
| Density, g/cm3 | 7.8 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 3.3 |
| Embodied Energy, MJ/kg | 36 | |
| 49 |
| Embodied Water, L/kg | 130 | |
| 100 |
Common Calculations
| PREN (Pitting Resistance) | 18 | |
| 15 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 to 140 | |
| 100 to 160 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 31 to 39 | |
| 27 to 75 |
| Strength to Weight: Bending, points | 26 to 30 | |
| 24 to 47 |
| Thermal Diffusivity, mm2/s | 4.4 | |
| 8.3 |
| Thermal Shock Resistance, points | 31 to 39 | |
| 23 to 63 |
Alloy Composition
| Carbon (C), % | 0 to 0.060 | |
| 2.1 to 2.4 |
| Chromium (Cr), % | 15.5 to 17.5 | |
| 11 to 13 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Iron (Fe), % | 74.4 to 80.5 | |
| 80.6 to 86.3 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 0.6 |
| Molybdenum (Mo), % | 0 to 0.7 | |
| 0.7 to 1.2 |
| Nickel (Ni), % | 4.0 to 5.5 | |
| 0 to 0.3 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 0.8 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 to 0.020 | |
| 0 to 0.030 |
| Vanadium (V), % | 0 | |
| 0 to 1.0 |