SAE-AISI 1084 Steel vs. EN 1.7221 Steel
Both SAE-AISI 1084 steel and EN 1.7221 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 1084 steel and the bottom bar is EN 1.7221 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 220 to 270 | |
| 200 to 230 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 11 | |
| 11 to 17 |
| Fatigue Strength, MPa | 320 to 370 | |
| 290 to 390 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 72 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 780 to 930 | |
| 650 to 780 |
| Tensile Strength: Yield (Proof), MPa | 510 to 600 | |
| 430 to 630 |
Thermal Properties
| Latent Heat of Fusion, J/g | 240 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 420 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1460 |
| Melting Onset (Solidus), °C | 1410 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 51 | |
| 44 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.1 | |
| 7.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.2 | |
| 8.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 2.4 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 1.5 |
| Embodied Energy, MJ/kg | 19 | |
| 20 |
| Embodied Water, L/kg | 46 | |
| 51 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 81 to 89 | |
| 83 to 98 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 700 to 960 | |
| 490 to 1050 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 28 to 33 | |
| 23 to 27 |
| Strength to Weight: Bending, points | 24 to 27 | |
| 21 to 24 |
| Thermal Diffusivity, mm2/s | 14 | |
| 12 |
| Thermal Shock Resistance, points | 25 to 30 | |
| 19 to 23 |
Alloy Composition
| Carbon (C), % | 0.8 to 0.93 | |
| 0.22 to 0.29 |
| Chromium (Cr), % | 0 | |
| 0.8 to 1.2 |
| Iron (Fe), % | 98.1 to 98.6 | |
| 96.8 to 98.3 |
| Manganese (Mn), % | 0.6 to 0.9 | |
| 0.5 to 0.8 |
| Molybdenum (Mo), % | 0 | |
| 0.15 to 0.3 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 to 0.050 | |
| 0 to 0.030 |