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AWS BAg-24 vs. EQ21A Magnesium

AWS BAg-24 belongs to the otherwise unclassified metals classification, while EQ21A magnesium belongs to the magnesium alloys. There are 17 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-24 and the bottom bar is EQ21A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 87
44
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 33
17
Tensile Strength: Ultimate (UTS), MPa 150
250

Thermal Properties

Latent Heat of Fusion, J/g 130
340
Melting Completion (Liquidus), °C 730
640
Melting Onset (Solidus), °C 660
560
Specific Heat Capacity, J/kg-K 310
980
Thermal Expansion, µm/m-K 21
27

Otherwise Unclassified Properties

Density, g/cm3 9.0
1.9
Embodied Carbon, kg CO2/kg material 49
27
Embodied Energy, MJ/kg 770
210

Common Calculations

Stiffness to Weight: Axial, points 5.3
13
Stiffness to Weight: Bending, points 16
63
Strength to Weight: Axial, points 4.6
37
Strength to Weight: Bending, points 6.9
47
Thermal Shock Resistance, points 5.9
15

Alloy Composition

Copper (Cu), % 19 to 21
0.050 to 0.1
Magnesium (Mg), % 0
93.9 to 96.8
Nickel (Ni), % 1.5 to 2.5
0 to 0.010
Silver (Ag), % 49 to 51
1.3 to 1.7
Unspecified Rare Earths, % 0
1.5 to 3.0
Zinc (Zn), % 26 to 30
0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0 to 0.15
0 to 0.3