Class 1 Tungsten vs. C14181 Copper

Class 1 tungsten belongs to the otherwise unclassified metals classification, while C14181 copper belongs to the copper alloys. There are 22 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is class 1 tungsten and the bottom bar is C14181 copper.

Class 1 Tungsten UNS C14181 (BVCu-1x) Vacuum Service Filler Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		250
Elastic (Young's, Tensile) Modulus, GPa		120

Elongation at Break, %		5.7
Elongation at Break, %		15

Poisson's Ratio		0.29
Poisson's Ratio		0.34

Shear Modulus, GPa		98
Shear Modulus, GPa		43

Tensile Strength: Ultimate (UTS), MPa		860
Tensile Strength: Ultimate (UTS), MPa		210

Tensile Strength: Yield (Proof), MPa		580
Tensile Strength: Yield (Proof), MPa		130

Thermal Properties

Latent Heat of Fusion, J/g		160
Latent Heat of Fusion, J/g		210

Specific Heat Capacity, J/kg-K		120
Specific Heat Capacity, J/kg-K		390

Thermal Conductivity, W/m-K		21
Thermal Conductivity, W/m-K		380

Thermal Expansion, µm/m-K		5.1
Thermal Expansion, µm/m-K		17

Otherwise Unclassified Properties

Density, g/cm³		15
Density, g/cm³		9.0

Embodied Carbon, kg CO₂/kg material		22
Embodied Carbon, kg CO₂/kg material		2.6

Embodied Energy, MJ/kg		340
Embodied Energy, MJ/kg		41

Embodied Water, L/kg		140
Embodied Water, L/kg		310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		44
Resilience: Ultimate (Unit Rupture Work), MJ/m³		28

Resilience: Unit (Modulus of Resilience), kJ/m³		660
Resilience: Unit (Modulus of Resilience), kJ/m³		69

Stiffness to Weight: Axial, points		9.6
Stiffness to Weight: Axial, points		7.2

Stiffness to Weight: Bending, points		14
Stiffness to Weight: Bending, points		18

Strength to Weight: Axial, points		16
Strength to Weight: Axial, points		6.5

Strength to Weight: Bending, points		14
Strength to Weight: Bending, points		8.8

Thermal Diffusivity, mm²/s		12
Thermal Diffusivity, mm²/s		110

Thermal Shock Resistance, points		48
Thermal Shock Resistance, points		7.4

Alloy Composition

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Cadmium (Cd), %		0
Cadmium (Cd), %		0 to 0.0020

Carbon (C), %		0
Carbon (C), %		0 to 0.0050

Copper (Cu), %		0
Copper (Cu), %		99.9 to 100

Lead (Pb), %		0
Lead (Pb), %		0 to 0.0020

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.0020

Tungsten (W), %		90
Tungsten (W), %		0

Zinc (Zn), %		0
Zinc (Zn), %		0 to 0.0020

Residuals, %		10
Residuals, %		0