EN 1.7033 +H Steel vs. EN 1.7108 +H Steel
Both EN 1.7033 +H steel and EN 1.7108 +H steel are iron alloys. Both are furnished in the hardened (H) condition. They have a very high 98% of their average alloy composition in common.
For each property being compared, the top bar is EN 1.7033 +H steel and the bottom bar is EN 1.7108 +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 | 53 | |
| 64 |
| Shear Modulus, GPa | 73 | |
| 72 |
| Tensile Strength: Ultimate (UTS), MPa | 1720 | |
| 2070 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 410 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1430 |
| Melting Onset (Solidus), °C | 1420 | |
| 1390 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 45 | |
| 46 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
| 7.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 8.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.2 | |
| 2.1 |
| Density, g/cm3 | 7.8 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 1.5 |
| Embodied Energy, MJ/kg | 19 | |
| 20 |
| Embodied Water, L/kg | 50 | |
| 47 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 61 | |
| 75 |
| Strength to Weight: Bending, points | 41 | |
| 47 |
| Thermal Diffusivity, mm2/s | 12 | |
| 12 |
| Thermal Shock Resistance, points | 50 | |
| 63 |
Alloy Composition
| Carbon (C), % | 0.3 to 0.37 | |
| 0.57 to 0.65 |
| Chromium (Cr), % | 0.9 to 1.2 | |
| 0.2 to 0.45 |
| Iron (Fe), % | 97.1 to 98.2 | |
| 95.9 to 96.9 |
| Manganese (Mn), % | 0.6 to 0.9 | |
| 0.7 to 1.0 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 0.4 | |
| 1.6 to 2.0 |
| Sulfur (S), % | 0 to 0.035 | |
| 0 to 0.025 |