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AWS BAg-35 vs. AZ31C Magnesium

AWS BAg-35 belongs to the otherwise unclassified metals classification, while AZ31C magnesium belongs to the magnesium alloys. There are 17 material properties with values for both materials. Properties with values for just one material (14, 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-35 and the bottom bar is AZ31C magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 91
45
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 34
17
Tensile Strength: Ultimate (UTS), MPa 170
260

Thermal Properties

Latent Heat of Fusion, J/g 140
350
Melting Completion (Liquidus), °C 750
600
Melting Onset (Solidus), °C 690
550
Specific Heat Capacity, J/kg-K 330
990
Thermal Expansion, µm/m-K 21
26

Otherwise Unclassified Properties

Density, g/cm3 8.7
1.7
Embodied Carbon, kg CO2/kg material 35
23
Embodied Energy, MJ/kg 550
160

Common Calculations

Stiffness to Weight: Axial, points 5.8
15
Stiffness to Weight: Bending, points 17
70
Strength to Weight: Axial, points 5.4
42
Strength to Weight: Bending, points 7.8
53
Thermal Shock Resistance, points 6.4
16

Alloy Composition

Aluminum (Al), % 0
2.4 to 3.6
Copper (Cu), % 31 to 33
0 to 0.1
Magnesium (Mg), % 0
93.4 to 97
Manganese (Mn), % 0
0.15 to 1.0
Nickel (Ni), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.1
Silver (Ag), % 34 to 36
0
Zinc (Zn), % 31 to 35
0.5 to 1.5
Residuals, % 0
0 to 0.3