EN 1.7117 +H Steel vs. EN 1.8063 +H Steel
Both EN 1.7117 +H steel and EN 1.8063 +H steel are iron alloys. Both are furnished in the hardened (H) condition. Their average alloy composition is basically identical.
For each property being compared, the top bar is EN 1.7117 +H steel and the bottom bar is EN 1.8063 +H steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Rockwell C Hardness | 60 | |
| 61 |
| Shear Modulus, GPa | 72 | |
| 72 |
| Tensile Strength: Ultimate (UTS), MPa | 1930 | |
| 1980 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 270 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 420 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1440 |
| Melting Onset (Solidus), °C | 1400 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 43 | |
| 42 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.5 | |
| 7.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.7 | |
| 8.8 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.6 | |
| 2.6 |
| Density, g/cm3 | 7.7 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 1.6 |
| Embodied Energy, MJ/kg | 21 | |
| 21 |
| Embodied Water, L/kg | 51 | |
| 51 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 69 | |
| 71 |
| Strength to Weight: Bending, points | 44 | |
| 45 |
| Thermal Diffusivity, mm2/s | 12 | |
| 11 |
| Thermal Shock Resistance, points | 58 | |
| 59 |
Alloy Composition
| Carbon (C), % | 0.49 to 0.56 | |
| 0.46 to 0.54 |
| Chromium (Cr), % | 0.7 to 1.0 | |
| 0.8 to 1.1 |
| Iron (Fe), % | 95.2 to 96.4 | |
| 95.2 to 96.4 |
| Manganese (Mn), % | 0.7 to 1.0 | |
| 0.7 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 0.2 to 0.35 |
| Nickel (Ni), % | 0.5 to 0.7 | |
| 0 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.025 |
| Silicon (Si), % | 1.2 to 1.5 | |
| 1.4 to 1.8 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.025 |