EN 1.5521 Steel vs. SAE-AISI 1050 Steel
Both EN 1.5521 steel and SAE-AISI 1050 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 SAE-AISI 1050 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 130 to 180 | |
| 200 to 220 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 11 to 21 | |
| 11 to 17 |
| Fatigue Strength, MPa | 210 to 310 | |
| 260 to 400 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Reduction in Area, % | 59 to 72 | |
| 34 to 45 |
| Shear Modulus, GPa | 73 | |
| 72 |
| Shear Strength, MPa | 310 to 360 | |
| 430 to 470 |
| Tensile Strength: Ultimate (UTS), MPa | 430 to 1390 | |
| 690 to 790 |
| Tensile Strength: Yield (Proof), MPa | 300 to 490 | |
| 390 to 650 |
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 | |
| 7.0 |
| 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 | |
| 81 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 250 to 630 | |
| 400 to 1130 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 15 to 49 | |
| 25 to 28 |
| Strength to Weight: Bending, points | 16 to 35 | |
| 22 to 24 |
| Thermal Diffusivity, mm2/s | 14 | |
| 14 |
| Thermal Shock Resistance, points | 13 to 41 | |
| 22 to 25 |
Alloy Composition
| Boron (B), % | 0.00080 to 0.0050 | |
| 0 |
| Carbon (C), % | 0.16 to 0.2 | |
| 0.48 to 0.55 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 |
| Iron (Fe), % | 98 to 98.9 | |
| 98.5 to 98.9 |
| Manganese (Mn), % | 0.9 to 1.2 | |
| 0.6 to 0.9 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.3 | |
| 0 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.050 |