EN 1.5525 Steel vs. SAE-AISI 1049 Steel
Both EN 1.5525 steel and SAE-AISI 1049 steel are iron alloys. Their average alloy composition is basically identical.
For each property being compared, the top bar is EN 1.5525 steel and the bottom bar is SAE-AISI 1049 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 | |
| 250 to 400 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Reduction in Area, % | 62 to 73 | |
| 34 to 46 |
| Shear Modulus, GPa | 73 | |
| 72 |
| Shear Strength, MPa | 310 to 350 | |
| 420 to 450 |
| Tensile Strength: Ultimate (UTS), MPa | 440 to 1440 | |
| 680 to 750 |
| Tensile Strength: Yield (Proof), MPa | 300 to 490 | |
| 370 to 640 |
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 | 50 | |
| 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 | 8.2 | |
| 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 | 48 | |
| 46 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 44 to 240 | |
| 75 to 99 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 240 to 640 | |
| 370 to 1090 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 16 to 51 | |
| 24 to 27 |
| Strength to Weight: Bending, points | 16 to 36 | |
| 22 to 23 |
| Thermal Diffusivity, mm2/s | 13 | |
| 14 |
| Thermal Shock Resistance, points | 13 to 42 | |
| 22 to 24 |
Alloy Composition
| Boron (B), % | 0.00080 to 0.0050 | |
| 0 |
| Carbon (C), % | 0.18 to 0.23 | |
| 0.46 to 0.53 |
| Chromium (Cr), % | 0 to 0.3 | |
| 0 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 |
| Iron (Fe), % | 97.7 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 |