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AWS BAg-7 vs. ISO-WD32250 Magnesium

AWS BAg-7 belongs to the otherwise unclassified metals classification, while ISO-WD32250 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-7 and the bottom bar is ISO-WD32250 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
45
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 31
17
Tensile Strength: Ultimate (UTS), MPa 150
310 to 330

Thermal Properties

Latent Heat of Fusion, J/g 130
340
Melting Completion (Liquidus), °C 650
600
Melting Onset (Solidus), °C 620
550
Specific Heat Capacity, J/kg-K 290
980
Thermal Expansion, µm/m-K 20
26

Otherwise Unclassified Properties

Density, g/cm3 9.3
1.8
Embodied Carbon, kg CO2/kg material 55
24
Embodied Energy, MJ/kg 860
160

Common Calculations

Stiffness to Weight: Axial, points 4.9
14
Stiffness to Weight: Bending, points 16
67
Strength to Weight: Axial, points 4.5
49 to 51
Strength to Weight: Bending, points 6.7
58 to 60
Thermal Shock Resistance, points 6.4
19 to 20

Alloy Composition

Copper (Cu), % 21 to 23
0
Magnesium (Mg), % 0
94.9 to 97.1
Silver (Ag), % 55 to 57
0
Tin (Sn), % 4.5 to 5.5
0
Zinc (Zn), % 15 to 19
2.5 to 4.0
Zirconium (Zr), % 0
0.45 to 0.8
Residuals, % 0
0 to 0.3