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AWS BAg-13a vs. ZK51A Magnesium

AWS BAg-13a belongs to the otherwise unclassified metals classification, while ZK51A magnesium belongs to the magnesium alloys. 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 AWS BAg-13a and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 92
45
Poisson's Ratio 0.36
0.29
Shear Modulus, GPa 34
18
Tensile Strength: Ultimate (UTS), MPa 180
240

Thermal Properties

Latent Heat of Fusion, J/g 160
340
Melting Completion (Liquidus), °C 890
640
Melting Onset (Solidus), °C 770
550
Specific Heat Capacity, J/kg-K 300
970
Thermal Expansion, µm/m-K 19
26

Otherwise Unclassified Properties

Density, g/cm3 9.8
1.8
Embodied Carbon, kg CO2/kg material 54
24
Embodied Energy, MJ/kg 850
160

Common Calculations

Stiffness to Weight: Axial, points 5.2
14
Stiffness to Weight: Bending, points 15
64
Strength to Weight: Axial, points 5.1
36
Strength to Weight: Bending, points 7.2
47
Thermal Shock Resistance, points 7.5
15

Alloy Composition

Copper (Cu), % 40.4 to 43.5
0 to 0.1
Magnesium (Mg), % 0
93.1 to 95.9
Nickel (Ni), % 1.5 to 2.5
0 to 0.010
Silver (Ag), % 55 to 57
0
Zinc (Zn), % 0
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3