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3105 Aluminum vs. AWS BAg-8a

3105 aluminum belongs to the aluminum alloys classification, while AWS BAg-8a belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (18, 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 3105 aluminum and the bottom bar is AWS BAg-8a.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
83
Poisson's Ratio 0.33
0.36
Shear Modulus, GPa 26
31
Tensile Strength: Ultimate (UTS), MPa 120 to 240
150

Thermal Properties

Latent Heat of Fusion, J/g 400
140
Melting Completion (Liquidus), °C 660
770
Melting Onset (Solidus), °C 640
770
Specific Heat Capacity, J/kg-K 900
290
Thermal Expansion, µm/m-K 24
19

Otherwise Unclassified Properties

Density, g/cm3 2.8
10

Common Calculations

Stiffness to Weight: Axial, points 14
4.6
Stiffness to Weight: Bending, points 50
15
Strength to Weight: Axial, points 12 to 24
4.2
Strength to Weight: Bending, points 20 to 31
6.3
Thermal Shock Resistance, points 5.2 to 11
6.7

Alloy Composition

Aluminum (Al), % 96 to 99.5
0
Chromium (Cr), % 0 to 0.2
0
Copper (Cu), % 0 to 0.3
26.4 to 28.8
Iron (Fe), % 0 to 0.7
0
Lithium (Li), % 0
0.25 to 0.5
Magnesium (Mg), % 0.2 to 0.8
0
Manganese (Mn), % 0.3 to 0.8
0
Silicon (Si), % 0 to 0.6
0
Silver (Ag), % 0
71 to 73
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.4
0
Residuals, % 0
0 to 0.15