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EN AC-45400 Aluminum vs. AWS BAu-2

EN AC-45400 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 (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 EN AC-45400 aluminum and the bottom bar is AWS BAu-2.

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 260
150

Thermal Properties

Latent Heat of Fusion, J/g 470
92
Melting Completion (Liquidus), °C 630
890
Melting Onset (Solidus), °C 560
890
Specific Heat Capacity, J/kg-K 880
180
Thermal Expansion, µm/m-K 22
15

Otherwise Unclassified Properties

Density, g/cm3 2.8
17

Common Calculations

Stiffness to Weight: Axial, points 14
3.3
Stiffness to Weight: Bending, points 49
9.1
Strength to Weight: Axial, points 25
2.4
Strength to Weight: Bending, points 32
3.6
Thermal Shock Resistance, points 12
7.1

Alloy Composition

Aluminum (Al), % 88.4 to 92.9
0
Copper (Cu), % 2.6 to 3.6
19.4 to 20.5
Gold (Au), % 0
79.5 to 80.5
Iron (Fe), % 0 to 0.6
0
Lead (Pb), % 0 to 0.1
0
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.55
0
Nickel (Ni), % 0 to 0.1
0
Silicon (Si), % 4.5 to 6.0
0
Tin (Sn), % 0 to 0.050
0
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0
0 to 0.15