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ISO-WD32250 Magnesium vs. AWS BAg-21

ISO-WD32250 magnesium belongs to the magnesium alloys classification, while AWS BAg-21 belongs to the otherwise unclassified metals. There are 16 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 ISO-WD32250 magnesium and the bottom bar is AWS BAg-21.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
85
Poisson's Ratio 0.29
0.36
Shear Modulus, GPa 17
31
Tensile Strength: Ultimate (UTS), MPa 310 to 330
150

Thermal Properties

Latent Heat of Fusion, J/g 340
140
Melting Completion (Liquidus), °C 600
800
Melting Onset (Solidus), °C 550
690
Specific Heat Capacity, J/kg-K 980
280
Thermal Expansion, µm/m-K 26
19

Otherwise Unclassified Properties

Density, g/cm3 1.8
9.8
Embodied Energy, MJ/kg 160
970

Common Calculations

Stiffness to Weight: Axial, points 14
4.8
Stiffness to Weight: Bending, points 67
15
Strength to Weight: Axial, points 49 to 51
4.2
Strength to Weight: Bending, points 58 to 60
6.4
Thermal Shock Resistance, points 19 to 20
6.6

Alloy Composition


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Copper (Cu), % 0
27.5 to 29.5
Magnesium (Mg), % 94.9 to 97.1
0
Nickel (Ni), % 0
2.0 to 3.0
Silver (Ag), % 0
62 to 64
Tin (Sn), % 0
5.0 to 7.0
Zinc (Zn), % 2.5 to 4.0
0
Zirconium (Zr), % 0.45 to 0.8
0
Residuals, % 0 to 0.3
0 to 0.15