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7108A Aluminum vs. AWS E308Mo

7108A aluminum belongs to the aluminum alloys classification, while AWS E308Mo belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (7, 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 7108A aluminum and the bottom bar is AWS E308Mo.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 11 to 13
40
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
78
Tensile Strength: Ultimate (UTS), MPa 350
620

Thermal Properties

Latent Heat of Fusion, J/g 380
290
Melting Completion (Liquidus), °C 630
1440
Melting Onset (Solidus), °C 520
1400
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 150
16
Thermal Expansion, µm/m-K 24
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
19
Density, g/cm3 2.9
7.9
Embodied Carbon, kg CO2/kg material 8.3
3.8
Embodied Energy, MJ/kg 150
53
Embodied Water, L/kg 1150
160

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 33 to 34
22
Strength to Weight: Bending, points 38
20
Thermal Diffusivity, mm2/s 59
4.2
Thermal Shock Resistance, points 15 to 16
16

Alloy Composition

Aluminum (Al), % 91.6 to 94.4
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.040
18 to 21
Copper (Cu), % 0 to 0.050
0 to 0.75
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.3
59.6 to 70.5
Magnesium (Mg), % 0.7 to 1.5
0
Manganese (Mn), % 0 to 0.050
0.5 to 2.5
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0
9.0 to 12
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.2
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.030
0
Zinc (Zn), % 4.8 to 5.8
0
Zirconium (Zr), % 0.15 to 0.25
0
Residuals, % 0 to 0.15
0