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Class 3 Tungsten vs. 2025 Aluminum

Class 3 tungsten belongs to the otherwise unclassified metals classification, while 2025 aluminum belongs to the aluminum alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 3 tungsten and the bottom bar is 2025 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 270
72
Elongation at Break, % 3.4
15
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 100
27
Tensile Strength: Ultimate (UTS), MPa 830
400
Tensile Strength: Yield (Proof), MPa 580
260

Thermal Properties

Latent Heat of Fusion, J/g 170
400
Specific Heat Capacity, J/kg-K 120
870
Thermal Conductivity, W/m-K 30
150
Thermal Expansion, µm/m-K 4.5
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
40
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
120

Otherwise Unclassified Properties

Density, g/cm3 15
3.0
Embodied Carbon, kg CO2/kg material 23
7.9
Embodied Energy, MJ/kg 360
150
Embodied Water, L/kg 150
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 25
55
Resilience: Unit (Modulus of Resilience), kJ/m3 630
450
Stiffness to Weight: Axial, points 9.6
13
Stiffness to Weight: Bending, points 14
46
Strength to Weight: Axial, points 15
37
Strength to Weight: Bending, points 13
40
Thermal Diffusivity, mm2/s 15
58
Thermal Shock Resistance, points 49
18

Alloy Composition

Aluminum (Al), % 0
90.9 to 95.2
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0
3.9 to 5.0
Iron (Fe), % 0
0 to 1.0
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0
0.4 to 1.2
Silicon (Si), % 0
0.5 to 1.2
Titanium (Ti), % 0
0 to 0.15
Tungsten (W), % 95
0
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15