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2218 Aluminum vs. Class 3 Tungsten

2218 aluminum belongs to the aluminum alloys classification, while class 3 tungsten belongs to the otherwise unclassified metals. 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 2218 aluminum and the bottom bar is class 3 tungsten.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
270
Elongation at Break, % 6.8 to 10
3.4
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
100
Tensile Strength: Ultimate (UTS), MPa 330 to 430
830
Tensile Strength: Yield (Proof), MPa 260 to 310
580

Thermal Properties

Latent Heat of Fusion, J/g 390
170
Specific Heat Capacity, J/kg-K 870
120
Thermal Conductivity, W/m-K 140
30
Thermal Expansion, µm/m-K 22
4.5

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
15
Electrical Conductivity: Equal Weight (Specific), % IACS 110
8.5

Otherwise Unclassified Properties

Density, g/cm3 3.1
15
Embodied Carbon, kg CO2/kg material 8.2
23
Embodied Energy, MJ/kg 150
360
Embodied Water, L/kg 1130
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27 to 31
25
Resilience: Unit (Modulus of Resilience), kJ/m3 450 to 650
630
Stiffness to Weight: Axial, points 13
9.6
Stiffness to Weight: Bending, points 45
14
Strength to Weight: Axial, points 30 to 39
15
Strength to Weight: Bending, points 34 to 41
13
Thermal Diffusivity, mm2/s 52
15
Thermal Shock Resistance, points 15 to 19
49

Alloy Composition

Aluminum (Al), % 88.8 to 93.6
0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.5 to 4.5
0
Iron (Fe), % 0 to 1.0
0
Magnesium (Mg), % 1.2 to 1.8
0
Manganese (Mn), % 0 to 0.2
0
Nickel (Ni), % 1.7 to 2.3
0
Silicon (Si), % 0 to 0.9
0
Tungsten (W), % 0
95
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0
5.0