EN 1.0303 Steel vs. EN 1.5501 Steel
Both EN 1.0303 steel and EN 1.5501 steel are iron alloys. Their average alloy composition is basically identical.
For each property being compared, the top bar is EN 1.0303 steel and the bottom bar is EN 1.5501 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 84 to 120 | |
| 120 to 150 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 12 to 25 | |
| 12 to 17 |
| Fatigue Strength, MPa | 150 to 230 | |
| 180 to 270 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Reduction in Area, % | 75 to 86 | |
| 63 to 73 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Shear Strength, MPa | 220 to 260 | |
| 270 to 310 |
| Tensile Strength: Ultimate (UTS), MPa | 290 to 410 | |
| 390 to 510 |
| Tensile Strength: Yield (Proof), MPa | 200 to 320 | |
| 260 to 420 |
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 | |
| 52 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 6.9 | |
| 7.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 7.9 | |
| 8.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 1.8 |
| Density, g/cm3 | 7.9 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 1.4 |
| Embodied Energy, MJ/kg | 18 | |
| 18 |
| Embodied Water, L/kg | 46 | |
| 46 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 30 to 94 | |
| 40 to 83 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 110 to 270 | |
| 190 to 460 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 10 to 15 | |
| 14 to 18 |
| Strength to Weight: Bending, points | 12 to 16 | |
| 15 to 18 |
| Thermal Diffusivity, mm2/s | 14 | |
| 14 |
| Thermal Shock Resistance, points | 9.2 to 13 | |
| 11 to 15 |
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 | |
| 0.13 to 0.16 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Iron (Fe), % | 99.335 to 99.71 | |
| 98.4 to 99.269 |
| Manganese (Mn), % | 0.25 to 0.4 | |
| 0.6 to 0.8 |
| 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 |