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308.0 Aluminum vs. AWS BAg-9

308.0 aluminum belongs to the aluminum alloys classification, while AWS BAg-9 belongs to the otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (17, 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 308.0 aluminum and the bottom bar is AWS BAg-9.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
82
Poisson's Ratio 0.33
0.35
Shear Modulus, GPa 27
31
Tensile Strength: Ultimate (UTS), MPa 190
140

Thermal Properties

Latent Heat of Fusion, J/g 470
130
Melting Completion (Liquidus), °C 620
720
Melting Onset (Solidus), °C 540
670
Specific Heat Capacity, J/kg-K 870
290
Thermal Expansion, µm/m-K 20
20

Otherwise Unclassified Properties

Density, g/cm3 2.9
9.6
Embodied Energy, MJ/kg 140
980

Common Calculations

Stiffness to Weight: Axial, points 14
4.8
Stiffness to Weight: Bending, points 47
15
Strength to Weight: Axial, points 18
4.1
Strength to Weight: Bending, points 25
6.3
Thermal Shock Resistance, points 9.2
6.0

Alloy Composition

Aluminum (Al), % 85.7 to 91
0
Copper (Cu), % 4.0 to 5.0
19 to 21
Iron (Fe), % 0 to 1.0
0
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
0
Silicon (Si), % 5.0 to 6.0
0
Silver (Ag), % 0
64 to 66
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 1.0
13 to 17
Residuals, % 0
0 to 0.15