EN 1.7231 Steel vs. EN 1.4307 Stainless Steel
Both EN 1.7231 steel and EN 1.4307 stainless steel are iron alloys. They have 73% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is EN 1.7231 steel and the bottom bar is EN 1.4307 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 240 to 280 | |
| 180 to 270 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 11 to 12 | |
| 14 to 46 |
| Fatigue Strength, MPa | 360 to 500 | |
| 190 to 320 |
| Impact Strength: V-Notched Charpy, J | 28 to 30 | |
| 91 to 94 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 77 |
| Tensile Strength: Ultimate (UTS), MPa | 790 to 930 | |
| 590 to 900 |
| Tensile Strength: Yield (Proof), MPa | 570 to 800 | |
| 200 to 570 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 940 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1430 |
| Melting Onset (Solidus), °C | 1420 | |
| 1380 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 46 | |
| 15 |
| Thermal Expansion, µm/m-K | 13 | |
| 16 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.3 | |
| 2.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.4 | |
| 2.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.5 | |
| 15 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 3.0 |
| Embodied Energy, MJ/kg | 20 | |
| 43 |
| Embodied Water, L/kg | 51 | |
| 140 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 87 to 100 | |
| 110 to 210 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 870 to 1700 | |
| 100 to 810 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 28 to 33 | |
| 21 to 32 |
| Strength to Weight: Bending, points | 24 to 27 | |
| 20 to 27 |
| Thermal Diffusivity, mm2/s | 12 | |
| 4.0 |
| Thermal Shock Resistance, points | 23 to 27 | |
| 13 to 20 |
Alloy Composition
| Carbon (C), % | 0.38 to 0.45 | |
| 0 to 0.030 |
| Chromium (Cr), % | 0.8 to 1.2 | |
| 17.5 to 19.5 |
| Iron (Fe), % | 96.4 to 98.1 | |
| 66.8 to 74.5 |
| Manganese (Mn), % | 0.6 to 1.0 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 0.15 to 0.3 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 8.0 to 10.5 |
| Nitrogen (N), % | 0 | |
| 0 to 0.1 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 to 0.6 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.015 |