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Class 4 Tungsten vs. ISO-WD21150 Magnesium

Class 4 tungsten belongs to the otherwise unclassified metals classification, while ISO-WD21150 magnesium belongs to the magnesium alloys. There are 24 material properties with values for both materials. Properties with values for just one material (6, 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 4 tungsten and the bottom bar is ISO-WD21150 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 270
45
Elongation at Break, % 2.3
5.7 to 11
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 110
17
Tensile Strength: Ultimate (UTS), MPa 790
240 to 290
Tensile Strength: Yield (Proof), MPa 580
120 to 200

Thermal Properties

Latent Heat of Fusion, J/g 170
350
Specific Heat Capacity, J/kg-K 130
990
Thermal Conductivity, W/m-K 30
100
Thermal Expansion, µm/m-K 4.5
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
19
Electrical Conductivity: Equal Weight (Specific), % IACS 9.7
100

Otherwise Unclassified Properties

Density, g/cm3 16
1.7
Embodied Carbon, kg CO2/kg material 24
23
Embodied Energy, MJ/kg 360
160
Embodied Water, L/kg 150
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16
15 to 24
Resilience: Unit (Modulus of Resilience), kJ/m3 620
160 to 460
Stiffness to Weight: Axial, points 9.6
15
Stiffness to Weight: Bending, points 14
70
Strength to Weight: Axial, points 14
40 to 48
Strength to Weight: Bending, points 12
52 to 58
Thermal Diffusivity, mm2/s 15
60
Thermal Shock Resistance, points 46
15 to 17

Alloy Composition

Aluminum (Al), % 0
2.4 to 3.6
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 0
0 to 0.0050
Magnesium (Mg), % 0
94 to 97
Manganese (Mn), % 0
0.15 to 0.4
Nickel (Ni), % 0
0 to 0.0050
Silicon (Si), % 0
0 to 0.1
Tungsten (W), % 97
0
Zinc (Zn), % 0
0.5 to 1.5
Residuals, % 0
0 to 0.3