EN 1.7231 Steel vs. Grade N7M Nickel
EN 1.7231 steel belongs to the iron alloys classification, while grade N7M nickel belongs to the nickel alloys. There are 25 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is EN 1.7231 steel and the bottom bar is grade N7M nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 220 |
| Elongation at Break, % | 11 to 12 | |
| 22 |
| Fatigue Strength, MPa | 360 to 500 | |
| 190 |
| Poisson's Ratio | 0.29 | |
| 0.31 |
| Shear Modulus, GPa | 73 | |
| 85 |
| Tensile Strength: Ultimate (UTS), MPa | 790 to 930 | |
| 590 |
| Tensile Strength: Yield (Proof), MPa | 570 to 800 | |
| 310 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 320 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 900 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1650 |
| Melting Onset (Solidus), °C | 1420 | |
| 1590 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 390 |
| Thermal Expansion, µm/m-K | 13 | |
| 9.9 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.5 | |
| 75 |
| Density, g/cm3 | 7.8 | |
| 9.3 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 16 |
| Embodied Energy, MJ/kg | 20 | |
| 200 |
| Embodied Water, L/kg | 51 | |
| 270 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 87 to 100 | |
| 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 870 to 1700 | |
| 220 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 22 |
| Strength to Weight: Axial, points | 28 to 33 | |
| 18 |
| Strength to Weight: Bending, points | 24 to 27 | |
| 17 |
| Thermal Shock Resistance, points | 23 to 27 | |
| 19 |
Alloy Composition
| Carbon (C), % | 0.38 to 0.45 | |
| 0 to 0.070 |
| Chromium (Cr), % | 0.8 to 1.2 | |
| 0 to 1.0 |
| Iron (Fe), % | 96.4 to 98.1 | |
| 0 to 3.0 |
| Manganese (Mn), % | 0.6 to 1.0 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0.15 to 0.3 | |
| 30 to 33 |
| Nickel (Ni), % | 0 | |
| 60.9 to 70 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.6 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |