EN 1.7221 Steel vs. EN 1.5410 Steel
Both EN 1.7221 steel and EN 1.5410 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 1.7221 steel and the bottom bar is EN 1.5410 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 200 to 230 | |
| 170 to 190 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 11 to 17 | |
| 20 to 25 |
| Fatigue Strength, MPa | 290 to 390 | |
| 290 to 330 |
| Impact Strength: V-Notched Charpy, J | 20 to 38 | |
| 67 to 68 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 650 to 780 | |
| 560 to 620 |
| Tensile Strength: Yield (Proof), MPa | 430 to 630 | |
| 400 to 480 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 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 | 44 | |
| 51 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.3 | |
| 7.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.4 | |
| 8.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.4 | |
| 2.3 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 1.7 |
| Embodied Energy, MJ/kg | 20 | |
| 22 |
| Embodied Water, L/kg | 51 | |
| 49 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 83 to 98 | |
| 120 to 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 490 to 1050 | |
| 430 to 610 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 23 to 27 | |
| 20 to 22 |
| Strength to Weight: Bending, points | 21 to 24 | |
| 19 to 21 |
| Thermal Diffusivity, mm2/s | 12 | |
| 14 |
| Thermal Shock Resistance, points | 19 to 23 | |
| 16 to 18 |
Alloy Composition
| Carbon (C), % | 0.22 to 0.29 | |
| 0 to 0.12 |
| Chromium (Cr), % | 0.8 to 1.2 | |
| 0 |
| Iron (Fe), % | 96.8 to 98.3 | |
| 96.9 to 98.6 |
| Manganese (Mn), % | 0.5 to 0.8 | |
| 1.2 to 1.8 |
| Molybdenum (Mo), % | 0.15 to 0.3 | |
| 0.2 to 0.4 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 0.6 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.020 |
| Vanadium (V), % | 0 | |
| 0.050 to 0.1 |