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AZ81A Magnesium vs. Class 1 Tungsten

AZ81A magnesium belongs to the magnesium alloys classification, while class 1 tungsten belongs to the otherwise unclassified metals. There are 24 material properties with values for both materials. Properties with values for just one material (10, 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 AZ81A magnesium and the bottom bar is class 1 tungsten.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
250
Elongation at Break, % 3.0 to 8.8
5.7
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
98
Tensile Strength: Ultimate (UTS), MPa 160 to 240
860
Tensile Strength: Yield (Proof), MPa 84
580

Thermal Properties

Latent Heat of Fusion, J/g 350
160
Specific Heat Capacity, J/kg-K 990
120
Thermal Conductivity, W/m-K 84
21
Thermal Expansion, µm/m-K 27
5.1

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
12
Electrical Conductivity: Equal Weight (Specific), % IACS 65
7.4

Otherwise Unclassified Properties

Density, g/cm3 1.7
15
Embodied Carbon, kg CO2/kg material 23
22
Embodied Energy, MJ/kg 160
340
Embodied Water, L/kg 990
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.0 to 17
44
Resilience: Unit (Modulus of Resilience), kJ/m3 77 to 78
660
Stiffness to Weight: Axial, points 15
9.6
Stiffness to Weight: Bending, points 70
14
Strength to Weight: Axial, points 26 to 39
16
Strength to Weight: Bending, points 38 to 50
14
Thermal Diffusivity, mm2/s 50
12
Thermal Shock Resistance, points 9.1 to 14
48

Alloy Composition


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Aluminum (Al), % 7.0 to 8.1
0
Copper (Cu), % 0 to 0.1
0
Magnesium (Mg), % 89.8 to 92.5
0
Manganese (Mn), % 0.13 to 0.35
0
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0 to 0.3
0
Tungsten (W), % 0
90
Zinc (Zn), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
10