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328.0 Aluminum vs. AWS BAu-2

328.0 aluminum belongs to the aluminum alloys classification, while AWS BAu-2 belongs to the otherwise unclassified metals. There are 15 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 328.0 aluminum and the bottom bar is AWS BAu-2.

328.0 (SC82A, A03280) Cast AluminumAWS BAu-2 (P00800) Filler Metal
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
100
Poisson's Ratio 0.33
0.4
Shear Modulus, GPa 27
36
Tensile Strength: Ultimate (UTS), MPa 200 to 270
150

Thermal Properties

Latent Heat of Fusion, J/g 510
92
Melting Completion (Liquidus), °C 620
890
Melting Onset (Solidus), °C 560
890
Specific Heat Capacity, J/kg-K 890
180
Thermal Expansion, µm/m-K 22
15

Otherwise Unclassified Properties

Density, g/cm3 2.7
17

Common Calculations

Stiffness to Weight: Axial, points 15
3.3
Stiffness to Weight: Bending, points 51
9.1
Strength to Weight: Axial, points 21 to 28
2.4
Strength to Weight: Bending, points 28 to 34
3.6
Thermal Shock Resistance, points 9.2 to 12
7.1

Alloy Composition

Aluminum (Al), % 84.5 to 91.1
0
Chromium (Cr), % 0 to 0.35
0
Copper (Cu), % 1.0 to 2.0
19.4 to 20.5
Gold (Au), % 0
79.5 to 80.5
Iron (Fe), % 0 to 1.0
0
Magnesium (Mg), % 0.2 to 0.6
0
Manganese (Mn), % 0.2 to 0.6
0
Nickel (Ni), % 0 to 0.25
0
Silicon (Si), % 7.5 to 8.5
0
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 1.5
0
Residuals, % 0
0 to 0.15