EN 1.4945 Stainless Steel vs. EN 1.7231 Steel
Both EN 1.4945 stainless steel and EN 1.7231 steel are iron alloys. They have 64% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is EN 1.4945 stainless steel and the bottom bar is EN 1.7231 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 200 to 220 | |
| 240 to 280 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 19 to 34 | |
| 11 to 12 |
| Fatigue Strength, MPa | 230 to 350 | |
| 360 to 500 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 640 to 740 | |
| 790 to 930 |
| Tensile Strength: Yield (Proof), MPa | 290 to 550 | |
| 570 to 800 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 920 | |
| 420 |
| Melting Completion (Liquidus), °C | 1490 | |
| 1460 |
| Melting Onset (Solidus), °C | 1440 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 14 | |
| 46 |
| Thermal Expansion, µm/m-K | 17 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.9 | |
| 7.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.2 | |
| 8.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 30 | |
| 2.5 |
| Density, g/cm3 | 8.1 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 5.0 | |
| 1.5 |
| Embodied Energy, MJ/kg | 73 | |
| 20 |
| Embodied Water, L/kg | 150 | |
| 51 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 130 to 180 | |
| 87 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 210 to 760 | |
| 870 to 1700 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 22 to 25 | |
| 28 to 33 |
| Strength to Weight: Bending, points | 20 to 22 | |
| 24 to 27 |
| Thermal Diffusivity, mm2/s | 3.7 | |
| 12 |
| Thermal Shock Resistance, points | 14 to 16 | |
| 23 to 27 |
Alloy Composition
| Carbon (C), % | 0.040 to 0.1 | |
| 0.38 to 0.45 |
| Chromium (Cr), % | 15.5 to 17.5 | |
| 0.8 to 1.2 |
| Iron (Fe), % | 57.9 to 65.7 | |
| 96.4 to 98.1 |
| Manganese (Mn), % | 0 to 1.5 | |
| 0.6 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 0.15 to 0.3 |
| Nickel (Ni), % | 15.5 to 17.5 | |
| 0 |
| Niobium (Nb), % | 0.4 to 1.2 | |
| 0 |
| Nitrogen (N), % | 0.060 to 0.14 | |
| 0 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.025 |
| Silicon (Si), % | 0.3 to 0.6 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.030 |
| Tungsten (W), % | 2.5 to 3.5 | |
| 0 |