EN 1.4740 Stainless Steel vs. SAE-AISI T8 Steel
Both EN 1.4740 stainless steel and SAE-AISI T8 steel are iron alloys. They have 78% of their average alloy composition in common. There are 18 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is EN 1.4740 stainless steel and the bottom bar is SAE-AISI T8 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 78 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 250 |
| Melting Completion (Liquidus), °C | 1420 | |
| 1730 |
| Melting Onset (Solidus), °C | 1370 | |
| 1670 |
| Specific Heat Capacity, J/kg-K | 490 | |
| 420 |
| Thermal Conductivity, W/m-K | 18 | |
| 18 |
| Thermal Expansion, µm/m-K | 10 | |
| 12 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.5 | |
| 45 |
| Density, g/cm3 | 7.6 | |
| 9.0 |
| Embodied Carbon, kg CO2/kg material | 2.3 | |
| 10 |
| Embodied Energy, MJ/kg | 32 | |
| 160 |
| Embodied Water, L/kg | 120 | |
| 120 |
Common Calculations
| PREN (Pitting Resistance) | 18 | |
| 30 |
| Stiffness to Weight: Axial, points | 14 | |
| 12 |
| Stiffness to Weight: Bending, points | 25 | |
| 22 |
| Thermal Diffusivity, mm2/s | 4.8 | |
| 4.8 |
Alloy Composition
| Carbon (C), % | 0.3 to 0.5 | |
| 0.75 to 0.85 |
| Chromium (Cr), % | 16 to 19 | |
| 3.8 to 4.5 |
| Cobalt (Co), % | 0 | |
| 4.3 to 5.8 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Iron (Fe), % | 75.4 to 82.7 | |
| 69.3 to 75.4 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0.2 to 0.4 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 0.4 to 1.0 |
| Nickel (Ni), % | 0 to 1.0 | |
| 0 to 0.3 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.030 |
| Silicon (Si), % | 1.0 to 2.5 | |
| 0.2 to 0.4 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |
| Tungsten (W), % | 0 | |
| 13.3 to 14.8 |
| Vanadium (V), % | 0 | |
| 1.8 to 2.4 |