EN 1.5521 Steel vs. SAE-AISI 1548 Steel
Both EN 1.5521 steel and SAE-AISI 1548 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 1548 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 130 to 180 | |
| 220 to 250 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 11 to 21 | |
| 11 to 16 |
| Fatigue Strength, MPa | 210 to 310 | |
| 270 to 430 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Reduction in Area, % | 59 to 72 | |
| 31 to 39 |
| Shear Modulus, GPa | 73 | |
| 72 |
| Shear Strength, MPa | 310 to 360 | |
| 440 to 500 |
| Tensile Strength: Ultimate (UTS), MPa | 430 to 1390 | |
| 730 to 830 |
| Tensile Strength: Yield (Proof), MPa | 300 to 490 | |
| 420 to 690 |
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 | |
| 19 |
| Embodied Water, L/kg | 47 | |
| 47 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 44 to 230 | |
| 79 to 99 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 250 to 630 | |
| 470 to 1280 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 15 to 49 | |
| 26 to 30 |
| Strength to Weight: Bending, points | 16 to 35 | |
| 23 to 25 |
| Thermal Diffusivity, mm2/s | 14 | |
| 14 |
| Thermal Shock Resistance, points | 13 to 41 | |
| 23 to 27 |
Alloy Composition
| Boron (B), % | 0.00080 to 0.0050 | |
| 0 |
| Carbon (C), % | 0.16 to 0.2 | |
| 0.44 to 0.52 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 |
| Iron (Fe), % | 98 to 98.9 | |
| 98 to 98.5 |
| Manganese (Mn), % | 0.9 to 1.2 | |
| 1.1 to 1.4 |
| 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 |