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AWS BAu-5 vs. EN-MC21210 Magnesium

AWS BAu-5 belongs to the otherwise unclassified metals classification, while EN-MC21210 magnesium belongs to the magnesium alloys. 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 AWS BAu-5 and the bottom bar is EN-MC21210 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
44
Poisson's Ratio 0.37
0.29
Shear Modulus, GPa 50
17
Tensile Strength: Ultimate (UTS), MPa 210
190

Thermal Properties

Latent Heat of Fusion, J/g 180
350
Melting Completion (Liquidus), °C 1170
600
Melting Onset (Solidus), °C 1140
570
Specific Heat Capacity, J/kg-K 280
1000
Thermal Expansion, µm/m-K 12
27

Otherwise Unclassified Properties

Density, g/cm3 13
1.6

Common Calculations

Stiffness to Weight: Axial, points 5.8
15
Stiffness to Weight: Bending, points 13
72
Strength to Weight: Axial, points 4.5
32
Strength to Weight: Bending, points 6.0
44
Thermal Shock Resistance, points 9.0
11

Alloy Composition

Aluminum (Al), % 0
1.6 to 2.6
Copper (Cu), % 0
0 to 0.010
Gold (Au), % 29.5 to 30.5
0
Iron (Fe), % 0
0 to 0.0050
Magnesium (Mg), % 0
96.3 to 98.3
Manganese (Mn), % 0
0.1 to 0.7
Nickel (Ni), % 35.5 to 36.4
0 to 0.0020
Palladium (Pd), % 33.5 to 34.5
0
Silicon (Si), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.010