Class 4 Tungsten vs. C71640 Copper-nickel

Class 4 tungsten belongs to the otherwise unclassified metals classification, while C71640 copper-nickel belongs to the copper alloys. There are 22 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is class 4 tungsten and the bottom bar is C71640 copper-nickel.

Class 4 Tungsten UNS C71640 Copper-Nickel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		270
Elastic (Young's, Tensile) Modulus, GPa		140

Poisson's Ratio		0.28
Poisson's Ratio		0.33

Shear Modulus, GPa		110
Shear Modulus, GPa		52

Tensile Strength: Ultimate (UTS), MPa		790
Tensile Strength: Ultimate (UTS), MPa		490 to 630

Tensile Strength: Yield (Proof), MPa		580
Tensile Strength: Yield (Proof), MPa		190 to 460

Thermal Properties

Latent Heat of Fusion, J/g		170
Latent Heat of Fusion, J/g		240

Specific Heat Capacity, J/kg-K		130
Specific Heat Capacity, J/kg-K		410

Thermal Conductivity, W/m-K		30
Thermal Conductivity, W/m-K		29

Thermal Expansion, µm/m-K		4.5
Thermal Expansion, µm/m-K		15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		17
Electrical Conductivity: Equal Volume, % IACS		7.0

Electrical Conductivity: Equal Weight (Specific), % IACS		9.7
Electrical Conductivity: Equal Weight (Specific), % IACS		7.1

Otherwise Unclassified Properties

Density, g/cm³		16
Density, g/cm³		8.9

Embodied Carbon, kg CO₂/kg material		24
Embodied Carbon, kg CO₂/kg material		5.0

Embodied Energy, MJ/kg		360
Embodied Energy, MJ/kg		73

Embodied Water, L/kg		150
Embodied Water, L/kg		280

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m³		620
Resilience: Unit (Modulus of Resilience), kJ/m³		130 to 750

Stiffness to Weight: Axial, points		9.6
Stiffness to Weight: Axial, points		8.7

Stiffness to Weight: Bending, points		14
Stiffness to Weight: Bending, points		20

Strength to Weight: Axial, points		14
Strength to Weight: Axial, points		15 to 20

Strength to Weight: Bending, points		12
Strength to Weight: Bending, points		16 to 18

Thermal Diffusivity, mm²/s		15
Thermal Diffusivity, mm²/s		8.2

Thermal Shock Resistance, points		46
Thermal Shock Resistance, points		16 to 21

Alloy Composition

Copper (Cu), %		0
Copper (Cu), %		61.7 to 67.8

Iron (Fe), %		0
Iron (Fe), %		1.7 to 2.3

Lead (Pb), %		0
Lead (Pb), %		0 to 0.050

Manganese (Mn), %		0
Manganese (Mn), %		1.5 to 2.5

Nickel (Ni), %		0
Nickel (Ni), %		29 to 32

Tungsten (W), %		97
Tungsten (W), %		0

Zinc (Zn), %		0
Zinc (Zn), %		0 to 1.0

Residuals, %		0
Residuals, %		0 to 0.5