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2218 Aluminum vs. AWS BAg-5

2218 aluminum belongs to the aluminum alloys classification, while AWS BAg-5 belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (15, 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 2218 aluminum and the bottom bar is AWS BAg-5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
88
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
33
Tensile Strength: Ultimate (UTS), MPa 330 to 430
150

Thermal Properties

Latent Heat of Fusion, J/g 390
140
Melting Completion (Liquidus), °C 640
740
Melting Onset (Solidus), °C 510
660
Specific Heat Capacity, J/kg-K 870
320
Thermal Expansion, µm/m-K 22
21

Otherwise Unclassified Properties

Density, g/cm3 3.1
9.0
Embodied Carbon, kg CO2/kg material 8.2
44
Embodied Energy, MJ/kg 150
700

Common Calculations

Stiffness to Weight: Axial, points 13
5.4
Stiffness to Weight: Bending, points 45
16
Strength to Weight: Axial, points 30 to 39
4.6
Strength to Weight: Bending, points 34 to 41
6.9
Thermal Shock Resistance, points 15 to 19
5.9

Alloy Composition

Aluminum (Al), % 88.8 to 93.6
0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.5 to 4.5
29 to 31
Iron (Fe), % 0 to 1.0
0
Magnesium (Mg), % 1.2 to 1.8
0
Manganese (Mn), % 0 to 0.2
0
Nickel (Ni), % 1.7 to 2.3
0
Silicon (Si), % 0 to 0.9
0
Silver (Ag), % 0
44 to 46
Zinc (Zn), % 0 to 0.25
23 to 27
Residuals, % 0
0 to 0.15