EN 1.6580 Steel vs. SAE-AISI 8645 Steel
Both EN 1.6580 steel and SAE-AISI 8645 steel are iron alloys. They have a very high 97% of their average alloy composition in common. 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 1.6580 steel and the bottom bar is SAE-AISI 8645 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 220 to 350 | |
| 180 to 200 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 11 to 19 | |
| 12 to 23 |
| Fatigue Strength, MPa | 310 to 610 | |
| 280 to 350 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Shear Strength, MPa | 450 to 700 | |
| 380 to 400 |
| Tensile Strength: Ultimate (UTS), MPa | 720 to 1170 | |
| 600 to 670 |
| Tensile Strength: Yield (Proof), MPa | 460 to 990 | |
| 390 to 560 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 450 | |
| 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 | 40 | |
| 39 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.8 | |
| 7.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.9 | |
| 8.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 4.3 | |
| 2.6 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 1.5 |
| Embodied Energy, MJ/kg | 23 | |
| 20 |
| Embodied Water, L/kg | 59 | |
| 50 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 to 130 | |
| 77 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 560 to 2590 | |
| 420 to 840 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 26 to 41 | |
| 21 to 24 |
| Strength to Weight: Bending, points | 23 to 31 | |
| 20 to 22 |
| Thermal Diffusivity, mm2/s | 11 | |
| 10 |
| Thermal Shock Resistance, points | 21 to 34 | |
| 18 to 20 |
Alloy Composition
| Carbon (C), % | 0.26 to 0.34 | |
| 0.43 to 0.48 |
| Chromium (Cr), % | 1.8 to 2.2 | |
| 0.4 to 0.6 |
| Iron (Fe), % | 93.7 to 95.5 | |
| 96.5 to 97.7 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 0.75 to 1.0 |
| Molybdenum (Mo), % | 0.3 to 0.5 | |
| 0.15 to 0.25 |
| Nickel (Ni), % | 1.8 to 2.2 | |
| 0.4 to 0.7 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 0.4 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 to 0.035 | |
| 0 to 0.040 |