EN 1.6554 Steel vs. EN 1.6579 Steel
Both EN 1.6554 steel and EN 1.6579 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 1.6554 steel and the bottom bar is EN 1.6579 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 230 to 280 | |
| 260 to 290 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 17 to 21 | |
| 11 to 14 |
| Fatigue Strength, MPa | 380 to 520 | |
| 380 to 570 |
| Impact Strength: V-Notched Charpy, J | 30 to 45 | |
| 35 to 41 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 780 to 930 | |
| 850 to 980 |
| Tensile Strength: Yield (Proof), MPa | 550 to 790 | |
| 600 to 910 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 440 |
| 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 | 40 | |
| 39 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.6 | |
| 7.7 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.7 | |
| 8.8 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 3.4 | |
| 3.7 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.7 | |
| 1.7 |
| Embodied Energy, MJ/kg | 22 | |
| 22 |
| Embodied Water, L/kg | 53 | |
| 56 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 to 150 | |
| 100 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 810 to 1650 | |
| 950 to 2210 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 27 to 33 | |
| 30 to 35 |
| Strength to Weight: Bending, points | 24 to 27 | |
| 25 to 28 |
| Thermal Diffusivity, mm2/s | 11 | |
| 11 |
| Thermal Shock Resistance, points | 23 to 27 | |
| 25 to 29 |
Alloy Composition
| Carbon (C), % | 0.23 to 0.28 | |
| 0.32 to 0.38 |
| Chromium (Cr), % | 0.7 to 0.9 | |
| 1.4 to 1.7 |
| Copper (Cu), % | 0 to 0.3 | |
| 0 |
| Iron (Fe), % | 94.6 to 97.3 | |
| 94.2 to 96.1 |
| Manganese (Mn), % | 0.6 to 0.9 | |
| 0.6 to 1.0 |
| Molybdenum (Mo), % | 0.2 to 0.3 | |
| 0.15 to 0.35 |
| Nickel (Ni), % | 1.0 to 2.0 | |
| 1.4 to 1.7 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 0.6 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.030 |
| Vanadium (V), % | 0 to 0.030 | |
| 0 |