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AWS BAg-8 vs. AZ63A Magnesium

AWS BAg-8 belongs to the otherwise unclassified metals classification, while AZ63A magnesium belongs to the magnesium alloys. 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 AWS BAg-8 and the bottom bar is AZ63A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 84
46
Poisson's Ratio 0.36
0.29
Shear Modulus, GPa 31
18
Tensile Strength: Ultimate (UTS), MPa 150
190 to 270

Thermal Properties

Latent Heat of Fusion, J/g 140
350
Melting Completion (Liquidus), °C 780
610
Melting Onset (Solidus), °C 780
450
Specific Heat Capacity, J/kg-K 280
980
Thermal Expansion, µm/m-K 19
26

Otherwise Unclassified Properties

Density, g/cm3 10
1.8

Common Calculations

Stiffness to Weight: Axial, points 4.6
14
Stiffness to Weight: Bending, points 14
66
Strength to Weight: Axial, points 4.1
29 to 41
Strength to Weight: Bending, points 6.2
40 to 51
Thermal Shock Resistance, points 6.7
11 to 16

Alloy Composition

Aluminum (Al), % 0
5.3 to 6.7
Copper (Cu), % 26.9 to 29
0 to 0.25
Magnesium (Mg), % 0
88.6 to 92.1
Manganese (Mn), % 0
0.15 to 0.35
Nickel (Ni), % 0
0 to 0.010
Silicon (Si), % 0
0 to 0.3
Silver (Ag), % 71 to 73
0
Zinc (Zn), % 0
2.5 to 3.5
Residuals, % 0
0 to 0.3