EN 1.3963 Alloy vs. EN 1.6781 Steel
Both EN 1.3963 alloy and EN 1.6781 steel are iron alloys. Both are furnished in the quenched and tempered condition. They have 67% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is EN 1.3963 alloy and the bottom bar is EN 1.6781 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 29 | |
| 17 |
| Poisson's Ratio | 0.3 | |
| 0.29 |
| Shear Modulus, GPa | 72 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 440 | |
| 830 |
| Tensile Strength: Yield (Proof), MPa | 310 | |
| 680 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 260 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1460 |
| Melting Onset (Solidus), °C | 1390 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 460 | |
| 470 |
| Thermal Expansion, µm/m-K | 1.6 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 25 | |
| 5.0 |
| Density, g/cm3 | 8.2 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 4.8 | |
| 1.9 |
| Embodied Energy, MJ/kg | 66 | |
| 25 |
| Embodied Water, L/kg | 110 | |
| 60 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 | |
| 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 260 | |
| 1220 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 23 | |
| 24 |
| Strength to Weight: Axial, points | 15 | |
| 29 |
| Strength to Weight: Bending, points | 16 | |
| 25 |
| Thermal Shock Resistance, points | 110 | |
| 24 |
Alloy Composition
| Carbon (C), % | 0 to 0.050 | |
| 0.15 to 0.19 |
| Chromium (Cr), % | 0 to 0.25 | |
| 1.3 to 1.8 |
| Iron (Fe), % | 60.5 to 64.9 | |
| 92.6 to 94.6 |
| Manganese (Mn), % | 0 to 0.5 | |
| 0.55 to 0.8 |
| Molybdenum (Mo), % | 0 to 1.0 | |
| 0.45 to 0.6 |
| Nickel (Ni), % | 35 to 37 | |
| 3.0 to 3.5 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 to 0.015 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 0.5 |
| Sulfur (S), % | 0.1 to 0.2 | |
| 0 to 0.015 |