EN 1.1122 Steel vs. EN 1.0303 Steel
Both EN 1.1122 steel and EN 1.0303 steel are iron alloys. Their average alloy composition is basically identical.
For each property being compared, the top bar is EN 1.1122 steel and the bottom bar is EN 1.0303 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 100 to 130 | |
| 84 to 120 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 12 to 21 | |
| 12 to 25 |
| Fatigue Strength, MPa | 170 to 260 | |
| 150 to 230 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Reduction in Area, % | 63 to 73 | |
| 75 to 86 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Shear Strength, MPa | 240 to 290 | |
| 220 to 260 |
| Tensile Strength: Ultimate (UTS), MPa | 340 to 460 | |
| 290 to 410 |
| Tensile Strength: Yield (Proof), MPa | 240 to 370 | |
| 200 to 320 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 400 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1470 |
| Melting Onset (Solidus), °C | 1420 | |
| 1430 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 51 | |
| 53 |
| Thermal Expansion, µm/m-K | 12 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.0 | |
| 6.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.0 | |
| 7.9 |
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 | 36 to 89 | |
| 30 to 94 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 160 to 360 | |
| 110 to 270 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 12 to 16 | |
| 10 to 15 |
| Strength to Weight: Bending, points | 14 to 17 | |
| 12 to 16 |
| Thermal Diffusivity, mm2/s | 14 | |
| 14 |
| Thermal Shock Resistance, points | 11 to 15 | |
| 9.2 to 13 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0.020 to 0.060 |
| Carbon (C), % | 0.080 to 0.12 | |
| 0.020 to 0.060 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 |
| Iron (Fe), % | 98.7 to 99.62 | |
| 99.335 to 99.71 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 0.25 to 0.4 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.020 |
| Silicon (Si), % | 0 to 0.3 | |
| 0 to 0.1 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.025 |