EN 1.4371 Stainless Steel vs. 772.0 Aluminum
EN 1.4371 stainless steel belongs to the iron alloys classification, while 772.0 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 1.4371 stainless steel and the bottom bar is 772.0 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 69 |
| Elongation at Break, % | 45 to 51 | |
| 6.3 to 8.4 |
| Fatigue Strength, MPa | 290 to 340 | |
| 94 to 160 |
| Poisson's Ratio | 0.28 | |
| 0.32 |
| Shear Modulus, GPa | 77 | |
| 26 |
| Tensile Strength: Ultimate (UTS), MPa | 740 to 750 | |
| 260 to 320 |
| Tensile Strength: Yield (Proof), MPa | 320 to 340 | |
| 220 to 250 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 380 |
| Maximum Temperature: Mechanical, °C | 880 | |
| 180 |
| Melting Completion (Liquidus), °C | 1410 | |
| 630 |
| Melting Onset (Solidus), °C | 1370 | |
| 580 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 870 |
| Thermal Conductivity, W/m-K | 15 | |
| 150 |
| Thermal Expansion, µm/m-K | 17 | |
| 24 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.5 | |
| 35 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.9 | |
| 110 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 12 | |
| 9.5 |
| Density, g/cm3 | 7.7 | |
| 3.0 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 8.0 |
| Embodied Energy, MJ/kg | 38 | |
| 150 |
| Embodied Water, L/kg | 140 | |
| 1140 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 270 to 310 | |
| 16 to 25 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 250 to 300 | |
| 350 to 430 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 46 |
| Strength to Weight: Axial, points | 27 | |
| 25 to 31 |
| Strength to Weight: Bending, points | 24 | |
| 31 to 36 |
| Thermal Diffusivity, mm2/s | 4.0 | |
| 58 |
| Thermal Shock Resistance, points | 16 | |
| 11 to 14 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 91.2 to 93.2 |
| Carbon (C), % | 0 to 0.030 | |
| 0 |
| Chromium (Cr), % | 16 to 17.5 | |
| 0.060 to 0.2 |
| Copper (Cu), % | 0 to 1.0 | |
| 0 to 0.1 |
| Iron (Fe), % | 66.7 to 74.4 | |
| 0 to 0.15 |
| Magnesium (Mg), % | 0 | |
| 0.6 to 0.8 |
| Manganese (Mn), % | 6.0 to 8.0 | |
| 0 to 0.1 |
| Nickel (Ni), % | 3.5 to 5.5 | |
| 0 |
| Nitrogen (N), % | 0.15 to 0.25 | |
| 0 |
| Phosphorus (P), % | 0 to 0.045 | |
| 0 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.15 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 0.1 to 0.2 |
| Zinc (Zn), % | 0 | |
| 6.0 to 7.0 |
| Residuals, % | 0 | |
| 0 to 0.15 |