SAE-AISI 1108 Steel vs. 2007 Aluminum
SAE-AISI 1108 steel belongs to the iron alloys classification, while 2007 aluminum belongs to the aluminum alloys. There are 30 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 SAE-AISI 1108 steel and the bottom bar is 2007 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
71 |
Elongation at Break, % | 23 to 34 | |
5.6 to 8.0 |
Fatigue Strength, MPa | 170 to 260 | |
91 to 110 |
Poisson's Ratio | 0.29 | |
0.33 |
Shear Modulus, GPa | 73 | |
27 |
Shear Strength, MPa | 250 to 280 | |
220 to 250 |
Tensile Strength: Ultimate (UTS), MPa | 380 to 440 | |
370 to 420 |
Tensile Strength: Yield (Proof), MPa | 220 to 360 | |
240 to 270 |
Thermal Properties
Latent Heat of Fusion, J/g | 250 | |
390 |
Maximum Temperature: Mechanical, °C | 400 | |
190 |
Melting Completion (Liquidus), °C | 1460 | |
640 |
Melting Onset (Solidus), °C | 1420 | |
510 |
Specific Heat Capacity, J/kg-K | 470 | |
870 |
Thermal Conductivity, W/m-K | 52 | |
130 |
Thermal Expansion, µm/m-K | 12 | |
23 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 7.0 | |
47 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 8.0 | |
140 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 1.8 | |
11 |
Density, g/cm3 | 7.9 | |
3.1 |
Embodied Carbon, kg CO2/kg material | 1.4 | |
8.0 |
Embodied Energy, MJ/kg | 18 | |
150 |
Embodied Water, L/kg | 46 | |
1130 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 95 to 110 | |
21 to 26 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 130 to 340 | |
390 to 530 |
Stiffness to Weight: Axial, points | 13 | |
13 |
Stiffness to Weight: Bending, points | 24 | |
44 |
Strength to Weight: Axial, points | 13 to 16 | |
33 to 38 |
Strength to Weight: Bending, points | 15 to 16 | |
37 to 40 |
Thermal Diffusivity, mm2/s | 14 | |
48 |
Thermal Shock Resistance, points | 12 to 14 | |
16 to 19 |
Alloy Composition
Aluminum (Al), % | 0 | |
87.5 to 95 |
Bismuth (Bi), % | 0 | |
0 to 0.2 |
Carbon (C), % | 0.080 to 0.13 | |
0 |
Chromium (Cr), % | 0 | |
0 to 0.1 |
Copper (Cu), % | 0 | |
3.3 to 4.6 |
Iron (Fe), % | 98.9 to 99.24 | |
0 to 0.8 |
Lead (Pb), % | 0 | |
0.8 to 1.5 |
Magnesium (Mg), % | 0 | |
0.4 to 1.8 |
Manganese (Mn), % | 0.6 to 0.8 | |
0.5 to 1.0 |
Nickel (Ni), % | 0 | |
0 to 0.2 |
Phosphorus (P), % | 0 to 0.040 | |
0 |
Silicon (Si), % | 0 | |
0 to 0.8 |
Sulfur (S), % | 0.080 to 0.13 | |
0 |
Tin (Sn), % | 0 | |
0 to 0.2 |
Titanium (Ti), % | 0 | |
0 to 0.2 |
Zinc (Zn), % | 0 | |
0 to 0.8 |
Residuals, % | 0 | |
0 to 0.3 |