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Class 1 Tungsten vs. ISO-WD32250 Magnesium

Class 1 tungsten belongs to the otherwise unclassified metals classification, while ISO-WD32250 magnesium belongs to the magnesium alloys. There are 24 material properties with values for both materials. Properties with values for just one material (7, 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 class 1 tungsten and the bottom bar is ISO-WD32250 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 250
45
Elongation at Break, % 5.7
4.5 to 8.6
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 98
17
Tensile Strength: Ultimate (UTS), MPa 860
310 to 330
Tensile Strength: Yield (Proof), MPa 580
240 to 290

Thermal Properties

Latent Heat of Fusion, J/g 160
340
Specific Heat Capacity, J/kg-K 120
980
Thermal Conductivity, W/m-K 21
130
Thermal Expansion, µm/m-K 5.1
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
25
Electrical Conductivity: Equal Weight (Specific), % IACS 7.4
130

Otherwise Unclassified Properties

Density, g/cm3 15
1.8
Embodied Carbon, kg CO2/kg material 22
24
Embodied Energy, MJ/kg 340
160
Embodied Water, L/kg 140
950

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44
14 to 26
Resilience: Unit (Modulus of Resilience), kJ/m3 660
630 to 930
Stiffness to Weight: Axial, points 9.6
14
Stiffness to Weight: Bending, points 14
67
Strength to Weight: Axial, points 16
49 to 51
Strength to Weight: Bending, points 14
58 to 60
Thermal Diffusivity, mm2/s 12
72
Thermal Shock Resistance, points 48
19 to 20

Alloy Composition

Magnesium (Mg), % 0
94.9 to 97.1
Tungsten (W), % 90
0
Zinc (Zn), % 0
2.5 to 4.0
Zirconium (Zr), % 0
0.45 to 0.8
Residuals, % 0
0 to 0.3