EN 1.7003 Steel vs. EN 1.5918 Steel
Both EN 1.7003 steel and EN 1.5918 steel are iron alloys. They have a very high 97% of their average alloy composition in common.
For each property being compared, the top bar is EN 1.7003 steel and the bottom bar is EN 1.5918 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 150 to 200 | |
| 160 to 190 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 520 to 1780 | |
| 530 to 1390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 410 | |
| 440 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1460 |
| Melting Onset (Solidus), °C | 1420 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 46 | |
| 43 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.1 | |
| 7.6 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.2 | |
| 8.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.0 | |
| 3.4 |
| Density, g/cm3 | 7.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 1.6 |
| Embodied Energy, MJ/kg | 19 | |
| 21 |
| Embodied Water, L/kg | 48 | |
| 56 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 18 to 63 | |
| 19 to 49 |
| Strength to Weight: Bending, points | 18 to 42 | |
| 18 to 35 |
| Thermal Diffusivity, mm2/s | 12 | |
| 12 |
| Thermal Shock Resistance, points | 15 to 53 | |
| 15 to 41 |
Alloy Composition
| Carbon (C), % | 0.35 to 0.42 | |
| 0.14 to 0.2 |
| Chromium (Cr), % | 0.4 to 0.6 | |
| 1.4 to 1.7 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Iron (Fe), % | 97.7 to 98.8 | |
| 94.9 to 96.6 |
| Manganese (Mn), % | 0.5 to 0.8 | |
| 0.5 to 0.9 |
| Nickel (Ni), % | 0 | |
| 1.4 to 1.7 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 0.4 | |
| 0 to 0.3 |
| Sulfur (S), % | 0 to 0.035 | |
| 0 to 0.025 |