AISI 347 Stainless Steel vs. 3105 Aluminum
AISI 347 stainless steel belongs to the iron alloys classification, while 3105 aluminum belongs to the aluminum alloys. There are 32 material properties with values for both materials. Properties with values for just one material (2, 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 AISI 347 stainless steel and the bottom bar is 3105 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 160 to 210 | |
| 29 to 67 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 69 |
| Elongation at Break, % | 34 to 46 | |
| 1.1 to 20 |
| Fatigue Strength, MPa | 220 to 270 | |
| 39 to 95 |
| Poisson's Ratio | 0.28 | |
| 0.33 |
| Shear Modulus, GPa | 77 | |
| 26 |
| Shear Strength, MPa | 430 to 460 | |
| 77 to 140 |
| Tensile Strength: Ultimate (UTS), MPa | 610 to 690 | |
| 120 to 240 |
| Tensile Strength: Yield (Proof), MPa | 240 to 350 | |
| 46 to 220 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 400 |
| Maximum Temperature: Mechanical, °C | 870 | |
| 180 |
| Melting Completion (Liquidus), °C | 1430 | |
| 660 |
| Melting Onset (Solidus), °C | 1400 | |
| 640 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 900 |
| Thermal Conductivity, W/m-K | 16 | |
| 170 |
| Thermal Expansion, µm/m-K | 17 | |
| 24 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.4 | |
| 44 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.7 | |
| 140 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 19 | |
| 9.5 |
| Calomel Potential, mV | -80 | |
| -750 |
| Density, g/cm3 | 7.8 | |
| 2.8 |
| Embodied Carbon, kg CO2/kg material | 3.6 | |
| 8.2 |
| Embodied Energy, MJ/kg | 52 | |
| 150 |
| Embodied Water, L/kg | 150 | |
| 1180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 190 to 220 | |
| 2.6 to 19 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 150 to 310 | |
| 15 to 340 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 50 |
| Strength to Weight: Axial, points | 22 to 25 | |
| 12 to 24 |
| Strength to Weight: Bending, points | 20 to 22 | |
| 20 to 31 |
| Thermal Diffusivity, mm2/s | 4.3 | |
| 68 |
| Thermal Shock Resistance, points | 13 to 15 | |
| 5.2 to 11 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 96 to 99.5 |
| Carbon (C), % | 0 to 0.080 | |
| 0 |
| Chromium (Cr), % | 17 to 19 | |
| 0 to 0.2 |
| Copper (Cu), % | 0 | |
| 0 to 0.3 |
| Iron (Fe), % | 64.1 to 74 | |
| 0 to 0.7 |
| Magnesium (Mg), % | 0 | |
| 0.2 to 0.8 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0.3 to 0.8 |
| Nickel (Ni), % | 9.0 to 13 | |
| 0 |
| Niobium (Nb), % | 0 to 1.0 | |
| 0 |
| Phosphorus (P), % | 0 to 0.045 | |
| 0 |
| Silicon (Si), % | 0 to 0.75 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 0 to 0.1 |
| Zinc (Zn), % | 0 | |
| 0 to 0.4 |
| Residuals, % | 0 | |
| 0 to 0.15 |