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EN-MC65220 Magnesium vs. AWS BAu-5

EN-MC65220 magnesium belongs to the magnesium alloys classification, while AWS BAu-5 belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (16, 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-MC65220 magnesium and the bottom bar is AWS BAu-5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
140
Poisson's Ratio 0.29
0.37
Shear Modulus, GPa 17
50
Tensile Strength: Ultimate (UTS), MPa 270
210

Thermal Properties

Latent Heat of Fusion, J/g 340
180
Melting Completion (Liquidus), °C 610
1170
Melting Onset (Solidus), °C 550
1140
Specific Heat Capacity, J/kg-K 980
280
Thermal Expansion, µm/m-K 26
12

Otherwise Unclassified Properties

Density, g/cm3 1.9
13

Common Calculations

Stiffness to Weight: Axial, points 13
5.8
Stiffness to Weight: Bending, points 62
13
Strength to Weight: Axial, points 40
4.5
Strength to Weight: Bending, points 49
6.0
Thermal Shock Resistance, points 17
9.0

Alloy Composition


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Copper (Cu), % 0.050 to 0.1
0
Gold (Au), % 0
29.5 to 30.5
Iron (Fe), % 0 to 0.010
0
Magnesium (Mg), % 93.8 to 96.8
0
Manganese (Mn), % 0 to 0.15
0
Nickel (Ni), % 0 to 0.0050
35.5 to 36.4
Palladium (Pd), % 0
33.5 to 34.5
Silicon (Si), % 0 to 0.010
0
Silver (Ag), % 1.3 to 1.7
0
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0 to 0.15