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ISO-WD32250 Magnesium vs. AWS BCo-1

ISO-WD32250 magnesium belongs to the magnesium alloys classification, while AWS BCo-1 belongs to the cobalt alloys. There are 18 material properties with values for both materials. Properties with values for just one material (13, 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 ISO-WD32250 magnesium and the bottom bar is AWS BCo-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 17
78
Tensile Strength: Ultimate (UTS), MPa 310 to 330
700

Thermal Properties

Latent Heat of Fusion, J/g 340
420
Melting Completion (Liquidus), °C 600
1150
Melting Onset (Solidus), °C 550
1120
Specific Heat Capacity, J/kg-K 980
480
Thermal Expansion, µm/m-K 26
12

Otherwise Unclassified Properties

Density, g/cm3 1.8
8.1
Embodied Carbon, kg CO2/kg material 24
8.0
Embodied Energy, MJ/kg 160
110
Embodied Water, L/kg 950
430

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 67
24
Strength to Weight: Axial, points 49 to 51
24
Strength to Weight: Bending, points 58 to 60
22
Thermal Shock Resistance, points 19 to 20
21

Alloy Composition


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Aluminum (Al), % 0
0 to 0.050
Boron (B), % 0
0.7 to 0.9
Carbon (C), % 0
0.35 to 0.45
Chromium (Cr), % 0
18 to 20
Cobalt (Co), % 0
46 to 54
Iron (Fe), % 0
0 to 1.0
Magnesium (Mg), % 94.9 to 97.1
0
Nickel (Ni), % 0
16 to 18
Phosphorus (P), % 0
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0
7.5 to 8.5
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Tungsten (W), % 0
3.5 to 4.5
Zinc (Zn), % 2.5 to 4.0
0
Zirconium (Zr), % 0.45 to 0.8
0 to 0.050
Residuals, % 0 to 0.3
0 to 0.5