355.0 Aluminum vs. EN 1.4938 Stainless Steel
355.0 aluminum belongs to the aluminum alloys classification, while EN 1.4938 stainless steel belongs to the iron alloys. There are 30 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 355.0 aluminum and the bottom bar is EN 1.4938 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 71 | |
| 200 |
| Elongation at Break, % | 1.5 to 2.6 | |
| 16 to 17 |
| Fatigue Strength, MPa | 55 to 70 | |
| 390 to 520 |
| Poisson's Ratio | 0.33 | |
| 0.28 |
| Shear Modulus, GPa | 27 | |
| 76 |
| Shear Strength, MPa | 150 to 240 | |
| 540 to 630 |
| Tensile Strength: Ultimate (UTS), MPa | 200 to 260 | |
| 870 to 1030 |
| Tensile Strength: Yield (Proof), MPa | 150 to 190 | |
| 640 to 870 |
Thermal Properties
| Latent Heat of Fusion, J/g | 470 | |
| 270 |
| Maximum Temperature: Mechanical, °C | 180 | |
| 750 |
| Melting Completion (Liquidus), °C | 620 | |
| 1460 |
| Melting Onset (Solidus), °C | 560 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 890 | |
| 470 |
| Thermal Conductivity, W/m-K | 150 to 170 | |
| 30 |
| Thermal Expansion, µm/m-K | 22 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 38 to 43 | |
| 2.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 120 to 140 | |
| 3.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.5 | |
| 10 |
| Density, g/cm3 | 2.7 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 8.0 | |
| 3.3 |
| Embodied Energy, MJ/kg | 150 | |
| 47 |
| Embodied Water, L/kg | 1120 | |
| 110 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 2.7 to 5.9 | |
| 140 to 160 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 150 to 250 | |
| 1050 to 1920 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 51 | |
| 25 |
| Strength to Weight: Axial, points | 20 to 27 | |
| 31 to 37 |
| Strength to Weight: Bending, points | 28 to 33 | |
| 26 to 29 |
| Thermal Diffusivity, mm2/s | 60 to 69 | |
| 8.1 |
| Thermal Shock Resistance, points | 9.1 to 12 | |
| 30 to 35 |
Alloy Composition
| Aluminum (Al), % | 90.3 to 94.1 | |
| 0 |
| Carbon (C), % | 0 | |
| 0.080 to 0.15 |
| Chromium (Cr), % | 0 to 0.25 | |
| 11 to 12.5 |
| Copper (Cu), % | 1.0 to 1.5 | |
| 0 |
| Iron (Fe), % | 0 to 0.6 | |
| 80.5 to 84.8 |
| Magnesium (Mg), % | 0.4 to 0.6 | |
| 0 |
| Manganese (Mn), % | 0 to 0.5 | |
| 0.4 to 0.9 |
| Molybdenum (Mo), % | 0 | |
| 1.5 to 2.0 |
| Nickel (Ni), % | 0 | |
| 2.0 to 3.0 |
| Nitrogen (N), % | 0 | |
| 0.020 to 0.040 |
| Phosphorus (P), % | 0 | |
| 0 to 0.025 |
| Silicon (Si), % | 4.5 to 5.5 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 | |
| 0 to 0.015 |
| Titanium (Ti), % | 0 to 0.25 | |
| 0 |
| Vanadium (V), % | 0 | |
| 0.25 to 0.4 |
| Zinc (Zn), % | 0 to 0.35 | |
| 0 |
| Residuals, % | 0 to 0.15 | |
| 0 |