EN 1.1170 Steel vs. EN 1.1221 Steel
Both EN 1.1170 steel and EN 1.1221 steel are iron alloys. Their average alloy composition is basically identical. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is EN 1.1170 steel and the bottom bar is EN 1.1221 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 180 to 210 | |
| 210 to 250 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 16 to 17 | |
| 10 to 21 |
| Fatigue Strength, MPa | 220 to 330 | |
| 240 to 340 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 72 |
| Shear Strength, MPa | 390 to 450 | |
| 450 to 520 |
| Tensile Strength: Ultimate (UTS), MPa | 640 to 730 | |
| 730 to 870 |
| Tensile Strength: Yield (Proof), MPa | 330 to 500 | |
| 390 to 550 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 400 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1460 |
| Melting Onset (Solidus), °C | 1420 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 50 | |
| 48 |
| Thermal Expansion, µm/m-K | 12 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.3 | |
| 7.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.4 | |
| 8.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.1 | |
| 2.1 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 1.5 |
| Embodied Energy, MJ/kg | 19 | |
| 19 |
| Embodied Water, L/kg | 49 | |
| 47 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 91 to 100 | |
| 67 to 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 290 to 670 | |
| 410 to 800 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 23 to 26 | |
| 26 to 31 |
| Strength to Weight: Bending, points | 21 to 23 | |
| 23 to 26 |
| Thermal Diffusivity, mm2/s | 13 | |
| 13 |
| Thermal Shock Resistance, points | 20 to 23 | |
| 23 to 28 |
Alloy Composition
| Carbon (C), % | 0.25 to 0.32 | |
| 0.57 to 0.65 |
| Chromium (Cr), % | 0 to 0.4 | |
| 0 to 0.4 |
| Iron (Fe), % | 96.7 to 98.5 | |
| 97.1 to 98.8 |
| Manganese (Mn), % | 1.3 to 1.7 | |
| 0.6 to 0.9 |
| Molybdenum (Mo), % | 0 to 0.1 | |
| 0 to 0.1 |
| Nickel (Ni), % | 0 to 0.4 | |
| 0 to 0.4 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 0.4 | |
| 0 to 0.4 |
| Sulfur (S), % | 0 to 0.035 | |
| 0 to 0.035 |