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AWS BAu-1 vs. EN-MC65220 Magnesium

AWS BAu-1 belongs to the otherwise unclassified metals classification, while EN-MC65220 magnesium belongs to the magnesium alloys. 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 AWS BAu-1 and the bottom bar is EN-MC65220 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
44
Poisson's Ratio 0.37
0.29
Shear Modulus, GPa 40
17
Tensile Strength: Ultimate (UTS), MPa 210
270

Thermal Properties

Latent Heat of Fusion, J/g 150
340
Melting Completion (Liquidus), °C 1020
610
Melting Onset (Solidus), °C 990
550
Specific Heat Capacity, J/kg-K 290
980
Thermal Expansion, µm/m-K 16
26

Otherwise Unclassified Properties

Density, g/cm3 13
1.9

Common Calculations

Stiffness to Weight: Axial, points 4.7
13
Stiffness to Weight: Bending, points 12
62
Strength to Weight: Axial, points 4.5
40
Strength to Weight: Bending, points 6.1
49
Thermal Shock Resistance, points 8.5
17

Alloy Composition

Copper (Cu), % 61.9 to 63
0.050 to 0.1
Gold (Au), % 37 to 38
0
Iron (Fe), % 0
0 to 0.010
Magnesium (Mg), % 0
93.8 to 96.8
Manganese (Mn), % 0
0 to 0.15
Nickel (Ni), % 0
0 to 0.0050
Silicon (Si), % 0
0 to 0.010
Silver (Ag), % 0
1.3 to 1.7
Unspecified Rare Earths, % 0
1.5 to 3.0
Zinc (Zn), % 0
0 to 0.2
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.010