EN 1.0303 Steel vs. EN 1.5502 Steel
Both EN 1.0303 steel and EN 1.5502 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 1.5502 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 84 to 120 | |
| 120 to 160 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 12 to 25 | |
| 12 to 20 |
| Fatigue Strength, MPa | 150 to 230 | |
| 190 to 290 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Reduction in Area, % | 75 to 86 | |
| 62 to 76 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Shear Strength, MPa | 220 to 260 | |
| 280 to 330 |
| Tensile Strength: Ultimate (UTS), MPa | 290 to 410 | |
| 400 to 1380 |
| Tensile Strength: Yield (Proof), MPa | 200 to 320 | |
| 270 to 440 |
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 | |
| 7.1 |
| 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 | |
| 41 to 210 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 110 to 270 | |
| 200 to 520 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 10 to 15 | |
| 14 to 49 |
| Strength to Weight: Bending, points | 12 to 16 | |
| 15 to 35 |
| Thermal Diffusivity, mm2/s | 14 | |
| 14 |
| Thermal Shock Resistance, points | 9.2 to 13 | |
| 12 to 40 |
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 | |
| 0.15 to 0.2 |
| Chromium (Cr), % | 0 | |
| 0 to 0.3 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Iron (Fe), % | 99.335 to 99.71 | |
| 98 to 99.249 |
| Manganese (Mn), % | 0.25 to 0.4 | |
| 0.6 to 0.9 |
| 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 |