EN 1.4938 Stainless Steel vs. 390.0 Aluminum
EN 1.4938 stainless steel belongs to the iron alloys classification, while 390.0 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.
For each property being compared, the top bar is EN 1.4938 stainless steel and the bottom bar is 390.0 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 75 |
| Elongation at Break, % | 16 to 17 | |
| 1.0 |
| Fatigue Strength, MPa | 390 to 520 | |
| 76 to 110 |
| Poisson's Ratio | 0.28 | |
| 0.33 |
| Shear Modulus, GPa | 76 | |
| 28 |
| Tensile Strength: Ultimate (UTS), MPa | 870 to 1030 | |
| 280 to 300 |
| Tensile Strength: Yield (Proof), MPa | 640 to 870 | |
| 240 to 270 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 640 |
| Maximum Temperature: Mechanical, °C | 750 | |
| 170 |
| Melting Completion (Liquidus), °C | 1460 | |
| 650 |
| Melting Onset (Solidus), °C | 1420 | |
| 560 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 880 |
| Thermal Conductivity, W/m-K | 30 | |
| 130 |
| Thermal Expansion, µm/m-K | 11 | |
| 18 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.9 | |
| 24 to 25 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.3 | |
| 79 to 83 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 10 | |
| 11 |
| Density, g/cm3 | 7.8 | |
| 2.7 |
| Embodied Carbon, kg CO2/kg material | 3.3 | |
| 7.3 |
| Embodied Energy, MJ/kg | 47 | |
| 130 |
| Embodied Water, L/kg | 110 | |
| 950 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 to 160 | |
| 2.7 to 2.9 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1050 to 1920 | |
| 380 to 470 |
| Stiffness to Weight: Axial, points | 14 | |
| 15 |
| Stiffness to Weight: Bending, points | 25 | |
| 52 |
| Strength to Weight: Axial, points | 31 to 37 | |
| 28 to 30 |
| Strength to Weight: Bending, points | 26 to 29 | |
| 35 to 36 |
| Thermal Diffusivity, mm2/s | 8.1 | |
| 56 |
| Thermal Shock Resistance, points | 30 to 35 | |
| 14 to 15 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 74.5 to 79.6 |
| Carbon (C), % | 0.080 to 0.15 | |
| 0 |
| Chromium (Cr), % | 11 to 12.5 | |
| 0 |
| Copper (Cu), % | 0 | |
| 4.0 to 5.0 |
| Iron (Fe), % | 80.5 to 84.8 | |
| 0 to 1.3 |
| Magnesium (Mg), % | 0 | |
| 0.45 to 0.65 |
| Manganese (Mn), % | 0.4 to 0.9 | |
| 0 to 0.1 |
| Molybdenum (Mo), % | 1.5 to 2.0 | |
| 0 |
| Nickel (Ni), % | 2.0 to 3.0 | |
| 0 |
| Nitrogen (N), % | 0.020 to 0.040 | |
| 0 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 |
| Silicon (Si), % | 0 to 0.5 | |
| 16 to 18 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 0 to 0.2 |
| Vanadium (V), % | 0.25 to 0.4 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 0 to 0.1 |
| Residuals, % | 0 | |
| 0 to 0.2 |