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Class 3 Tungsten vs. 4145 Aluminum

Class 3 tungsten belongs to the otherwise unclassified metals classification, while 4145 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 4145 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 270
73
Elongation at Break, % 3.4
2.2
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 100
28
Tensile Strength: Ultimate (UTS), MPa 830
120
Tensile Strength: Yield (Proof), MPa 580
68

Thermal Properties

Latent Heat of Fusion, J/g 170
540
Specific Heat Capacity, J/kg-K 120
880
Thermal Conductivity, W/m-K 30
100
Thermal Expansion, µm/m-K 4.5
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
26
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
84

Otherwise Unclassified Properties

Density, g/cm3 15
2.8
Embodied Carbon, kg CO2/kg material 23
7.6
Embodied Energy, MJ/kg 360
140
Embodied Water, L/kg 150
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 25
2.3
Resilience: Unit (Modulus of Resilience), kJ/m3 630
31
Stiffness to Weight: Axial, points 9.6
14
Stiffness to Weight: Bending, points 14
50
Strength to Weight: Axial, points 15
12
Strength to Weight: Bending, points 13
19
Thermal Diffusivity, mm2/s 15
42
Thermal Shock Resistance, points 49
5.5

Alloy Composition

Aluminum (Al), % 0
83 to 87.4
Chromium (Cr), % 0
0 to 0.15
Copper (Cu), % 0
3.3 to 4.7
Iron (Fe), % 0
0 to 0.8
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 0
0 to 0.15
Silicon (Si), % 0
9.3 to 10.7
Tungsten (W), % 95
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15