SAE-AISI 4320 Steel vs. EN 1.6554 Steel
Both SAE-AISI 4320 steel and EN 1.6554 steel are iron alloys. Their average alloy composition is basically identical. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 4320 steel and the bottom bar is EN 1.6554 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 160 to 240 | |
| 230 to 280 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 21 to 29 | |
| 17 to 21 |
| Fatigue Strength, MPa | 320 | |
| 380 to 520 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 570 to 790 | |
| 780 to 930 |
| Tensile Strength: Yield (Proof), MPa | 430 to 460 | |
| 550 to 790 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 420 |
| 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 | |
| 40 |
| Thermal Expansion, µm/m-K | 11 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 | |
| 7.6 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.5 | |
| 8.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 3.4 | |
| 3.4 |
| Density, g/cm3 | 7.9 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 1.7 | |
| 1.7 |
| Embodied Energy, MJ/kg | 22 | |
| 22 |
| Embodied Water, L/kg | 52 | |
| 53 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 to 150 | |
| 140 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 480 to 560 | |
| 810 to 1650 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 20 to 28 | |
| 27 to 33 |
| Strength to Weight: Bending, points | 19 to 24 | |
| 24 to 27 |
| Thermal Diffusivity, mm2/s | 13 | |
| 11 |
| Thermal Shock Resistance, points | 19 to 27 | |
| 23 to 27 |
Alloy Composition
| Carbon (C), % | 0.17 to 0.22 | |
| 0.23 to 0.28 |
| Chromium (Cr), % | 0.4 to 0.6 | |
| 0.7 to 0.9 |
| Copper (Cu), % | 0 | |
| 0 to 0.3 |
| Iron (Fe), % | 95.8 to 97 | |
| 94.6 to 97.3 |
| Manganese (Mn), % | 0.45 to 0.65 | |
| 0.6 to 0.9 |
| Molybdenum (Mo), % | 0.2 to 0.3 | |
| 0.2 to 0.3 |
| Nickel (Ni), % | 1.7 to 2.0 | |
| 1.0 to 2.0 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.030 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 to 0.025 |
| Vanadium (V), % | 0 | |
| 0 to 0.030 |