EN 1.4062 Stainless Steel vs. SAE-AISI 8740 Steel
Both EN 1.4062 stainless steel and SAE-AISI 8740 steel are iron alloys. They have 76% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is EN 1.4062 stainless steel and the bottom bar is SAE-AISI 8740 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 23 to 34 | |
| 11 to 23 |
| Fatigue Strength, MPa | 410 to 420 | |
| 270 to 350 |
| Poisson's Ratio | 0.27 | |
| 0.29 |
| Shear Modulus, GPa | 79 | |
| 73 |
| Shear Strength, MPa | 510 | |
| 370 to 400 |
| Tensile Strength: Ultimate (UTS), MPa | 770 to 800 | |
| 580 to 670 |
| Tensile Strength: Yield (Proof), MPa | 530 to 600 | |
| 380 to 570 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 1030 | |
| 410 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1460 |
| Melting Onset (Solidus), °C | 1380 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 15 | |
| 39 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.1 | |
| 7.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.4 | |
| 8.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 12 | |
| 2.6 |
| Density, g/cm3 | 7.7 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 1.5 |
| Embodied Energy, MJ/kg | 37 | |
| 20 |
| Embodied Water, L/kg | 150 | |
| 50 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 170 to 230 | |
| 71 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 690 to 910 | |
| 390 to 850 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 28 to 29 | |
| 20 to 24 |
| Strength to Weight: Bending, points | 24 to 25 | |
| 20 to 22 |
| Thermal Diffusivity, mm2/s | 4.0 | |
| 10 |
| Thermal Shock Resistance, points | 21 to 22 | |
| 17 to 20 |
Alloy Composition
| Carbon (C), % | 0 to 0.030 | |
| 0.38 to 0.43 |
| Chromium (Cr), % | 21.5 to 24 | |
| 0.4 to 0.6 |
| Iron (Fe), % | 69.3 to 77.3 | |
| 96.5 to 97.7 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0.75 to 1.0 |
| Molybdenum (Mo), % | 0 to 0.45 | |
| 0.2 to 0.3 |
| Nickel (Ni), % | 1.0 to 2.9 | |
| 0.4 to 0.7 |
| Nitrogen (N), % | 0.16 to 0.28 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 1.0 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 to 0.040 |