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Class 2 Tungsten vs. C18700 Copper

Class 2 tungsten belongs to the otherwise unclassified metals classification, while C18700 copper belongs to the copper 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.

For each property being compared, the top bar is class 2 tungsten and the bottom bar is C18700 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 260
110
Elongation at Break, % 5.7
9.0 to 9.6
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 100
43
Tensile Strength: Ultimate (UTS), MPa 860
290 to 330
Tensile Strength: Yield (Proof), MPa 580
230 to 250

Thermal Properties

Latent Heat of Fusion, J/g 160
210
Specific Heat Capacity, J/kg-K 120
380
Thermal Conductivity, W/m-K 20
380
Thermal Expansion, µm/m-K 4.6
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
98
Electrical Conductivity: Equal Weight (Specific), % IACS 7.8
99

Otherwise Unclassified Properties

Density, g/cm3 15
9.0
Embodied Carbon, kg CO2/kg material 23
2.6
Embodied Energy, MJ/kg 350
41
Embodied Water, L/kg 140
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44
24 to 29
Resilience: Unit (Modulus of Resilience), kJ/m3 640
240 to 280
Stiffness to Weight: Axial, points 9.6
7.1
Stiffness to Weight: Bending, points 14
18
Strength to Weight: Axial, points 16
9.0 to 10
Strength to Weight: Bending, points 13
11 to 12
Thermal Diffusivity, mm2/s 11
110
Thermal Shock Resistance, points 52
10 to 12

Alloy Composition

Copper (Cu), % 0
98 to 99.2
Lead (Pb), % 0
0.8 to 1.5
Tungsten (W), % 92.5
0
Residuals, % 0
0 to 0.5