EN 1.0303 Steel vs. EN 1.5521 Steel
Both EN 1.0303 steel and EN 1.5521 steel are iron alloys. They have a very high 99% of their average alloy composition in common.
For each property being compared, the top bar is EN 1.0303 steel and the bottom bar is EN 1.5521 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 84 to 120 | |
| 130 to 180 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 12 to 25 | |
| 11 to 21 |
| Fatigue Strength, MPa | 150 to 230 | |
| 210 to 310 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Reduction in Area, % | 75 to 86 | |
| 59 to 72 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Shear Strength, MPa | 220 to 260 | |
| 310 to 360 |
| Tensile Strength: Ultimate (UTS), MPa | 290 to 410 | |
| 430 to 1390 |
| Tensile Strength: Yield (Proof), MPa | 200 to 320 | |
| 300 to 490 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 400 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1460 |
| Melting Onset (Solidus), °C | 1430 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 53 | |
| 51 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 6.9 | |
| 7.1 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 7.9 | |
| 8.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 1.9 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 1.4 |
| Embodied Energy, MJ/kg | 18 | |
| 19 |
| Embodied Water, L/kg | 46 | |
| 47 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 30 to 94 | |
| 44 to 230 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 110 to 270 | |
| 250 to 630 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 10 to 15 | |
| 15 to 49 |
| Strength to Weight: Bending, points | 12 to 16 | |
| 16 to 35 |
| Thermal Diffusivity, mm2/s | 14 | |
| 14 |
| Thermal Shock Resistance, points | 9.2 to 13 | |
| 13 to 41 |
Alloy Composition
| Aluminum (Al), % | 0.020 to 0.060 | |
| 0 |
| Boron (B), % | 0 | |
| 0.00080 to 0.0050 |
| Carbon (C), % | 0.020 to 0.060 | |
| 0.16 to 0.2 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Iron (Fe), % | 99.335 to 99.71 | |
| 98 to 98.9 |
| Manganese (Mn), % | 0.25 to 0.4 | |
| 0.9 to 1.2 |
| Phosphorus (P), % | 0 to 0.020 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 0.1 | |
| 0 to 0.3 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.025 |