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AWS BAg-4 vs. EN-MC65120 Magnesium

AWS BAg-4 belongs to the otherwise unclassified metals classification, while EN-MC65120 magnesium belongs to the magnesium alloys. There are 17 material properties with values for both materials. Properties with values for just one material (15, 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 BAg-4 and the bottom bar is EN-MC65120 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 91
45
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 34
17
Tensile Strength: Ultimate (UTS), MPa 150
160

Thermal Properties

Latent Heat of Fusion, J/g 140
330
Melting Completion (Liquidus), °C 780
590
Melting Onset (Solidus), °C 670
520
Specific Heat Capacity, J/kg-K 330
970
Thermal Expansion, µm/m-K 21
26

Otherwise Unclassified Properties

Density, g/cm3 8.9
1.9
Embodied Carbon, kg CO2/kg material 40
25
Embodied Energy, MJ/kg 630
190

Common Calculations

Stiffness to Weight: Axial, points 5.7
13
Stiffness to Weight: Bending, points 17
62
Strength to Weight: Axial, points 4.7
23
Strength to Weight: Bending, points 7.1
34
Thermal Shock Resistance, points 5.7
9.8

Alloy Composition

Copper (Cu), % 29 to 31
0 to 0.030
Iron (Fe), % 0
0 to 0.010
Magnesium (Mg), % 0
91.8 to 95.1
Manganese (Mn), % 0
0 to 0.15
Nickel (Ni), % 1.5 to 2.5
0 to 0.0050
Silicon (Si), % 0
0 to 0.010
Silver (Ag), % 39 to 41
0
Unspecified Rare Earths, % 0
2.5 to 4.0
Zinc (Zn), % 26 to 30
2.0 to 3.0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.010