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6081 Aluminum vs. AWS BAu-6

6081 aluminum belongs to the aluminum alloys classification, while AWS BAu-6 belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (16, 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 6081 aluminum and the bottom bar is AWS BAu-6.

6081 (6081-T6, AlSi0.9MgMn) AluminumAWS BAu-6 (P00700) Filler Metal
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
120
Poisson's Ratio 0.33
0.39
Shear Modulus, GPa 26
43
Tensile Strength: Ultimate (UTS), MPa 310
190

Thermal Properties

Latent Heat of Fusion, J/g 410
120
Melting Completion (Liquidus), °C 640
1050
Melting Onset (Solidus), °C 610
1010
Specific Heat Capacity, J/kg-K 900
210
Thermal Expansion, µm/m-K 23
13

Otherwise Unclassified Properties

Density, g/cm3 2.7
16

Common Calculations

Stiffness to Weight: Axial, points 14
4.0
Stiffness to Weight: Bending, points 50
10
Strength to Weight: Axial, points 32
3.2
Strength to Weight: Bending, points 37
4.5
Thermal Shock Resistance, points 14
8.5

Alloy Composition

Aluminum (Al), % 96.3 to 98.6
0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0 to 0.1
0
Gold (Au), % 0
69.5 to 70.5
Iron (Fe), % 0 to 0.5
0
Magnesium (Mg), % 0.6 to 1.0
0
Manganese (Mn), % 0.1 to 0.45
0
Nickel (Ni), % 0
21.5 to 22.5
Palladium (Pd), % 0
7.5 to 8.5
Silicon (Si), % 0.7 to 1.1
0
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0
0 to 0.15