EN 1.5521 Steel vs. EN 1.1147 Steel
Both EN 1.5521 steel and EN 1.1147 steel are iron alloys. Their average alloy composition is basically identical.
For each property being compared, the top bar is EN 1.5521 steel and the bottom bar is EN 1.1147 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 130 to 180 | |
| 110 to 140 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 11 to 21 | |
| 12 to 17 |
| Fatigue Strength, MPa | 210 to 310 | |
| 180 to 250 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Reduction in Area, % | 59 to 72 | |
| 63 to 73 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Shear Strength, MPa | 310 to 360 | |
| 280 |
| Tensile Strength: Ultimate (UTS), MPa | 430 to 1390 | |
| 390 to 470 |
| Tensile Strength: Yield (Proof), MPa | 300 to 490 | |
| 280 to 370 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 400 |
| 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 | 51 | |
| 51 |
| Thermal Expansion, µm/m-K | 13 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.1 | |
| 7.1 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.1 | |
| 8.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.9 | |
| 1.8 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 1.4 |
| Embodied Energy, MJ/kg | 19 | |
| 18 |
| Embodied Water, L/kg | 47 | |
| 46 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 44 to 230 | |
| 40 to 73 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 250 to 630 | |
| 210 to 370 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 15 to 49 | |
| 14 to 17 |
| Strength to Weight: Bending, points | 16 to 35 | |
| 15 to 17 |
| Thermal Diffusivity, mm2/s | 14 | |
| 14 |
| Thermal Shock Resistance, points | 13 to 41 | |
| 12 to 15 |
Alloy Composition
| Boron (B), % | 0.00080 to 0.0050 | |
| 0 |
| Carbon (C), % | 0.16 to 0.2 | |
| 0.15 to 0.19 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 to 0.25 |
| Iron (Fe), % | 98 to 98.9 | |
| 98.3 to 99.25 |
| Manganese (Mn), % | 0.9 to 1.2 | |
| 0.6 to 0.9 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 0.3 | |
| 0 to 0.3 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.025 |