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AWS BAu-5 vs. 319.0 Aluminum

AWS BAu-5 belongs to the otherwise unclassified metals classification, while 319.0 aluminum belongs to the aluminum alloys. 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 AWS BAu-5 and the bottom bar is 319.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
72
Poisson's Ratio 0.37
0.33
Shear Modulus, GPa 50
27
Tensile Strength: Ultimate (UTS), MPa 210
190 to 240

Thermal Properties

Latent Heat of Fusion, J/g 180
480
Melting Completion (Liquidus), °C 1170
600
Melting Onset (Solidus), °C 1140
540
Specific Heat Capacity, J/kg-K 280
880
Thermal Expansion, µm/m-K 12
22

Otherwise Unclassified Properties

Density, g/cm3 13
2.9

Common Calculations

Stiffness to Weight: Axial, points 5.8
14
Stiffness to Weight: Bending, points 13
48
Strength to Weight: Axial, points 4.5
18 to 24
Strength to Weight: Bending, points 6.0
25 to 30
Thermal Shock Resistance, points 9.0
8.6 to 11

Alloy Composition

Aluminum (Al), % 0
85.8 to 91.5
Copper (Cu), % 0
3.0 to 4.0
Gold (Au), % 29.5 to 30.5
0
Iron (Fe), % 0
0 to 1.0
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0
0 to 0.5
Nickel (Ni), % 35.5 to 36.4
0 to 0.35
Palladium (Pd), % 33.5 to 34.5
0
Silicon (Si), % 0
5.5 to 6.5
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5