EN 1.7216 Steel vs. SAE-AISI 8620 Steel
Both EN 1.7216 steel and SAE-AISI 8620 steel are iron alloys. Their average alloy composition is basically identical.
For each property being compared, the top bar is EN 1.7216 steel and the bottom bar is SAE-AISI 8620 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 200 to 280 | |
| 150 to 210 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 12 to 23 | |
| 13 to 31 |
| Fatigue Strength, MPa | 290 to 440 | |
| 270 to 360 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Shear Strength, MPa | 410 to 560 | |
| 340 to 420 |
| Tensile Strength: Ultimate (UTS), MPa | 650 to 930 | |
| 520 to 690 |
| Tensile Strength: Yield (Proof), MPa | 400 to 690 | |
| 360 to 570 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 410 |
| 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 | 46 | |
| 39 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
| 7.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 8.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.4 | |
| 2.6 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 1.5 |
| Embodied Energy, MJ/kg | 20 | |
| 20 |
| Embodied Water, L/kg | 50 | |
| 50 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 130 | |
| 86 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 430 to 1280 | |
| 340 to 880 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 23 to 33 | |
| 18 to 24 |
| Strength to Weight: Bending, points | 21 to 27 | |
| 18 to 22 |
| Thermal Diffusivity, mm2/s | 12 | |
| 10 |
| Thermal Shock Resistance, points | 19 to 27 | |
| 15 to 20 |
Alloy Composition
| Carbon (C), % | 0.27 to 0.34 | |
| 0.18 to 0.23 |
| Chromium (Cr), % | 0.8 to 1.2 | |
| 0.4 to 0.6 |
| Iron (Fe), % | 97.2 to 98.4 | |
| 96.9 to 98 |
| Manganese (Mn), % | 0.35 to 0.6 | |
| 0.7 to 0.9 |
| Molybdenum (Mo), % | 0.15 to 0.3 | |
| 0.15 to 0.25 |
| Nickel (Ni), % | 0 | |
| 0.4 to 0.7 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 0.35 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 to 0.035 | |
| 0 to 0.040 |