SAE-AISI 8720 Steel vs. EN 1.3555 Steel
Both SAE-AISI 8720 steel and EN 1.3555 steel are iron alloys. Both are furnished in the annealed condition. They have 88% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 8720 steel and the bottom bar is EN 1.3555 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 150 | |
| 230 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 75 |
| Tensile Strength: Ultimate (UTS), MPa | 500 | |
| 770 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 260 |
| Maximum Temperature: Mechanical, °C | 410 | |
| 540 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1500 |
| Melting Onset (Solidus), °C | 1420 | |
| 1450 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 460 |
| Thermal Expansion, µm/m-K | 11 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.3 | |
| 9.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 11 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.6 | |
| 11 |
| Density, g/cm3 | 7.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 5.6 |
| Embodied Energy, MJ/kg | 20 | |
| 81 |
| Embodied Water, L/kg | 50 | |
| 90 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 18 | |
| 27 |
| Strength to Weight: Bending, points | 18 | |
| 23 |
| Thermal Shock Resistance, points | 17 | |
| 22 |
Alloy Composition
| Carbon (C), % | 0.18 to 0.23 | |
| 0.1 to 0.15 |
| Chromium (Cr), % | 0.4 to 0.6 | |
| 3.9 to 4.3 |
| Copper (Cu), % | 0 | |
| 0 to 0.1 |
| Iron (Fe), % | 96.8 to 98 | |
| 85.4 to 87.7 |
| Manganese (Mn), % | 0.7 to 0.9 | |
| 0.15 to 0.35 |
| Molybdenum (Mo), % | 0.2 to 0.3 | |
| 4.0 to 4.5 |
| Nickel (Ni), % | 0.4 to 0.7 | |
| 3.2 to 3.6 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.015 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0.1 to 0.25 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 to 0.010 |
| Tungsten (W), % | 0 | |
| 0 to 0.15 |
| Vanadium (V), % | 0 | |
| 1.0 to 1.3 |