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EN-MC21320 Magnesium vs. AWS BVAu-8

EN-MC21320 magnesium belongs to the magnesium alloys classification, while AWS BVAu-8 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-MC21320 magnesium and the bottom bar is AWS BVAu-8.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
100
Poisson's Ratio 0.29
0.42
Shear Modulus, GPa 18
36
Tensile Strength: Ultimate (UTS), MPa 230
140

Thermal Properties

Latent Heat of Fusion, J/g 370
71
Melting Completion (Liquidus), °C 600
1240
Melting Onset (Solidus), °C 530
1200
Specific Heat Capacity, J/kg-K 1000
140
Thermal Expansion, µm/m-K 26
14

Otherwise Unclassified Properties

Density, g/cm3 1.6
19

Common Calculations

Stiffness to Weight: Axial, points 15
3.0
Stiffness to Weight: Bending, points 72
8.3
Strength to Weight: Axial, points 38
2.1
Strength to Weight: Bending, points 50
3.2
Thermal Shock Resistance, points 13
7.1

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0
Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0
0 to 0.0050
Copper (Cu), % 0 to 0.010
0
Gold (Au), % 0
91 to 93
Iron (Fe), % 0 to 0.0050
0
Lead (Pb), % 0
0 to 0.0020
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0
Nickel (Ni), % 0 to 0.0020
0
Palladium (Pd), % 0
7.0 to 9.0
Phosphorus (P), % 0
0 to 0.0020
Silicon (Si), % 0.5 to 1.5
0
Zinc (Zn), % 0 to 0.2
0 to 0.0010
Residuals, % 0 to 0.010
0