Class 4 Tungsten vs. CR012A Copper

Class 4 tungsten belongs to the otherwise unclassified metals classification, while CR012A copper belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is class 4 tungsten and the bottom bar is CR012A copper.

Class 4 Tungsten EN CR012A (CuAg0.07) Silver-Bearing Tough Pitch Copper

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		270
Elastic (Young's, Tensile) Modulus, GPa		120

Elongation at Break, %		2.3
Elongation at Break, %		15

Poisson's Ratio		0.28
Poisson's Ratio		0.34

Shear Modulus, GPa		110
Shear Modulus, GPa		43

Tensile Strength: Ultimate (UTS), MPa		790
Tensile Strength: Ultimate (UTS), MPa		220

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

Thermal Properties

Latent Heat of Fusion, J/g		170
Latent Heat of Fusion, J/g		210

Specific Heat Capacity, J/kg-K		130
Specific Heat Capacity, J/kg-K		390

Thermal Conductivity, W/m-K		30
Thermal Conductivity, W/m-K		390

Thermal Expansion, µm/m-K		4.5
Thermal Expansion, µm/m-K		17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		17
Electrical Conductivity: Equal Volume, % IACS		100

Electrical Conductivity: Equal Weight (Specific), % IACS		9.7
Electrical Conductivity: Equal Weight (Specific), % IACS		100

Otherwise Unclassified Properties

Density, g/cm³		16
Density, g/cm³		9.0

Embodied Carbon, kg CO₂/kg material		24
Embodied Carbon, kg CO₂/kg material		2.7

Embodied Energy, MJ/kg		360
Embodied Energy, MJ/kg		42

Embodied Water, L/kg		150
Embodied Water, L/kg		360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		16
Resilience: Ultimate (Unit Rupture Work), MJ/m³		29

Resilience: Unit (Modulus of Resilience), kJ/m³		620
Resilience: Unit (Modulus of Resilience), kJ/m³		76

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		14
Strength to Weight: Axial, points		6.8

Strength to Weight: Bending, points		12
Strength to Weight: Bending, points		9.0

Thermal Diffusivity, mm²/s		15
Thermal Diffusivity, mm²/s		110

Thermal Shock Resistance, points		46
Thermal Shock Resistance, points		7.8

Alloy Composition

Bismuth (Bi), %		0
Bismuth (Bi), %		0 to 0.00050

Copper (Cu), %		0
Copper (Cu), %		99.85 to 99.94

Oxygen (O), %		0
Oxygen (O), %		0 to 0.040

Silver (Ag), %		0
Silver (Ag), %		0.060 to 0.080

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

Residuals, %		3.0
Residuals, %		0