SAE-AISI 8645 Steel vs. EN 1.4313 Stainless Steel
Both SAE-AISI 8645 steel and EN 1.4313 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 8645 steel and the bottom bar is EN 1.4313 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 12 to 23 | |
| 12 to 17 |
| Fatigue Strength, MPa | 280 to 350 | |
| 340 to 510 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 76 |
| Shear Strength, MPa | 380 to 400 | |
| 460 to 600 |
| Tensile Strength: Ultimate (UTS), MPa | 600 to 670 | |
| 750 to 1000 |
| Tensile Strength: Yield (Proof), MPa | 390 to 560 | |
| 580 to 910 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 410 | |
| 780 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1450 |
| Melting Onset (Solidus), °C | 1420 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 39 | |
| 25 |
| Thermal Expansion, µm/m-K | 13 | |
| 10 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.3 | |
| 2.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.4 | |
| 3.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.6 | |
| 10 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 2.4 |
| Embodied Energy, MJ/kg | 20 | |
| 34 |
| Embodied Water, L/kg | 50 | |
| 110 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 77 to 120 | |
| 110 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 420 to 840 | |
| 870 to 2100 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 21 to 24 | |
| 27 to 36 |
| Strength to Weight: Bending, points | 20 to 22 | |
| 23 to 28 |
| Thermal Diffusivity, mm2/s | 10 | |
| 6.7 |
| Thermal Shock Resistance, points | 18 to 20 | |
| 27 to 36 |
Alloy Composition
| Carbon (C), % | 0.43 to 0.48 | |
| 0 to 0.050 |
| Chromium (Cr), % | 0.4 to 0.6 | |
| 12 to 14 |
| Iron (Fe), % | 96.5 to 97.7 | |
| 78.5 to 84.2 |
| Manganese (Mn), % | 0.75 to 1.0 | |
| 0 to 1.5 |
| Molybdenum (Mo), % | 0.15 to 0.25 | |
| 0.3 to 0.7 |
| Nickel (Ni), % | 0.4 to 0.7 | |
| 3.5 to 4.5 |
| Nitrogen (N), % | 0 | |
| 0 to 0.020 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.040 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 to 0.7 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 to 0.015 |