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Class 4 Tungsten vs. Zamak 3

Class 4 tungsten belongs to the otherwise unclassified metals classification, while Zamak 3 belongs to the zinc alloys. There are 24 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 class 4 tungsten and the bottom bar is Zamak 3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 270
86
Elongation at Break, % 2.3
11
Poisson's Ratio 0.28
0.25
Shear Modulus, GPa 110
33
Tensile Strength: Ultimate (UTS), MPa 790
280
Tensile Strength: Yield (Proof), MPa 580
210

Thermal Properties

Latent Heat of Fusion, J/g 170
120
Specific Heat Capacity, J/kg-K 130
410
Thermal Conductivity, W/m-K 30
110
Thermal Expansion, µm/m-K 4.5
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
27
Electrical Conductivity: Equal Weight (Specific), % IACS 9.7
38

Otherwise Unclassified Properties

Density, g/cm3 16
6.4
Embodied Carbon, kg CO2/kg material 24
3.0
Embodied Energy, MJ/kg 360
57
Embodied Water, L/kg 150
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16
28
Resilience: Unit (Modulus of Resilience), kJ/m3 620
260
Stiffness to Weight: Axial, points 9.6
7.5
Stiffness to Weight: Bending, points 14
23
Strength to Weight: Axial, points 14
12
Strength to Weight: Bending, points 12
15
Thermal Diffusivity, mm2/s 15
43
Thermal Shock Resistance, points 46
8.6

Alloy Composition


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Aluminum (Al), % 0
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0050
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0
0 to 0.1
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 0
0.020 to 0.060
Nickel (Ni), % 0
0 to 0.020
Silicon (Si), % 0
0 to 0.030
Tin (Sn), % 0
0 to 0.0030
Tungsten (W), % 97
0
Zinc (Zn), % 0
95.3 to 96.5
Residuals, % 3.0
0