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EN-MC21210 Magnesium vs. AWS BAu-4

EN-MC21210 magnesium belongs to the magnesium alloys classification, while AWS BAu-4 belongs to the otherwise unclassified metals. 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 EN-MC21210 magnesium and the bottom bar is AWS BAu-4.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
110
Poisson's Ratio 0.29
0.4
Shear Modulus, GPa 17
41
Tensile Strength: Ultimate (UTS), MPa 190
200

Thermal Properties

Latent Heat of Fusion, J/g 350
100
Melting Completion (Liquidus), °C 600
950
Melting Onset (Solidus), °C 570
950
Specific Heat Capacity, J/kg-K 1000
190
Thermal Expansion, µm/m-K 27
14

Otherwise Unclassified Properties

Density, g/cm3 1.6
17

Common Calculations

Stiffness to Weight: Axial, points 15
3.6
Stiffness to Weight: Bending, points 72
9.3
Strength to Weight: Axial, points 32
3.2
Strength to Weight: Bending, points 44
4.4
Thermal Shock Resistance, points 11
9.2

Alloy Composition

Aluminum (Al), % 1.6 to 2.6
0
Copper (Cu), % 0 to 0.010
0
Gold (Au), % 0
81.5 to 82.5
Iron (Fe), % 0 to 0.0050
0
Magnesium (Mg), % 96.3 to 98.3
0
Manganese (Mn), % 0.1 to 0.7
0
Nickel (Ni), % 0 to 0.0020
17.4 to 18.5
Silicon (Si), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0 to 0.15