EN 1.4024 Stainless Steel vs. ACI-ASTM CK20 Steel
Both EN 1.4024 stainless steel and ACI-ASTM CK20 steel are iron alloys. They have 66% of their average alloy composition in common. There are 31 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 1.4024 stainless steel and the bottom bar is ACI-ASTM CK20 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 15 to 22 | |
| 37 |
| Fatigue Strength, MPa | 220 to 300 | |
| 220 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 76 | |
| 78 |
| Tensile Strength: Ultimate (UTS), MPa | 590 to 750 | |
| 530 |
| Tensile Strength: Yield (Proof), MPa | 330 to 510 | |
| 260 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 310 |
| Maximum Temperature: Corrosion, °C | 390 | |
| 440 |
| Maximum Temperature: Mechanical, °C | 760 | |
| 1100 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1400 |
| Melting Onset (Solidus), °C | 1400 | |
| 1430 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 30 | |
| 14 |
| Thermal Expansion, µm/m-K | 11 | |
| 15 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.9 | |
| 2.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.3 | |
| 2.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 7.0 | |
| 25 |
| Density, g/cm3 | 7.7 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.9 | |
| 4.4 |
| Embodied Energy, MJ/kg | 27 | |
| 62 |
| Embodied Water, L/kg | 100 | |
| 190 |
Common Calculations
| PREN (Pitting Resistance) | 13 | |
| 26 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 98 to 110 | |
| 160 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 280 to 660 | |
| 170 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 21 to 27 | |
| 19 |
| Strength to Weight: Bending, points | 20 to 24 | |
| 19 |
| Thermal Diffusivity, mm2/s | 8.1 | |
| 3.7 |
| Thermal Shock Resistance, points | 21 to 26 | |
| 13 |
Alloy Composition
| Carbon (C), % | 0.12 to 0.17 | |
| 0 to 0.2 |
| Chromium (Cr), % | 12 to 14 | |
| 23 to 27 |
| Iron (Fe), % | 83.8 to 87.9 | |
| 46.7 to 58 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 0 | |
| 0 to 0.5 |
| Nickel (Ni), % | 0 | |
| 19 to 22 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 2.0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.040 |