EN 1.4029 Stainless Steel vs. Hardened AISI 440C
Both EN 1.4029 stainless steel and hardened AISI 440C are iron alloys. They have a moderately high 95% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is EN 1.4029 stainless steel and the bottom bar is hardened AISI 440C.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 10 to 20 | |
| 2.0 |
| Fatigue Strength, MPa | 270 to 400 | |
| 840 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 76 | |
| 76 |
| Shear Strength, MPa | 440 to 550 | |
| 1120 |
| Tensile Strength: Ultimate (UTS), MPa | 700 to 930 | |
| 1970 |
| Tensile Strength: Yield (Proof), MPa | 410 to 740 | |
| 1900 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 280 |
| Maximum Temperature: Corrosion, °C | 390 | |
| 390 |
| Maximum Temperature: Mechanical, °C | 750 | |
| 870 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1480 |
| Melting Onset (Solidus), °C | 1400 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 30 | |
| 22 |
| Thermal Expansion, µm/m-K | 10 | |
| 10 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 3.1 | |
| 2.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.7 | |
| 2.8 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 7.0 | |
| 9.0 |
| Density, g/cm3 | 7.7 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 2.0 | |
| 2.2 |
| Embodied Energy, MJ/kg | 28 | |
| 31 |
| Embodied Water, L/kg | 100 | |
| 120 |
Common Calculations
| PREN (Pitting Resistance) | 14 | |
| 18 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 89 to 120 | |
| 39 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 25 to 33 | |
| 71 |
| Strength to Weight: Bending, points | 23 to 27 | |
| 46 |
| Thermal Diffusivity, mm2/s | 8.1 | |
| 6.0 |
| Thermal Shock Resistance, points | 26 to 34 | |
| 71 |
Alloy Composition
| Carbon (C), % | 0.25 to 0.32 | |
| 1.0 to 1.2 |
| Chromium (Cr), % | 12 to 13.5 | |
| 16 to 18 |
| Iron (Fe), % | 82.8 to 87.6 | |
| 78 to 83.1 |
| Manganese (Mn), % | 0 to 1.5 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 to 0.6 | |
| 0 to 0.75 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0.15 to 0.25 | |
| 0 to 0.015 |