Class 4 Tungsten vs. C42500 Brass

Class 4 tungsten belongs to the otherwise unclassified metals classification, while C42500 brass belongs to the copper 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.

For each property being compared, the top bar is class 4 tungsten and the bottom bar is C42500 brass.

Class 4 Tungsten UNS C42500 (CW454K) Tin Brass

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		270
Elastic (Young's, Tensile) Modulus, GPa		110

Elongation at Break, %		2.3
Elongation at Break, %		2.0 to 49

Poisson's Ratio		0.28
Poisson's Ratio		0.33

Shear Modulus, GPa		110
Shear Modulus, GPa		42

Tensile Strength: Ultimate (UTS), MPa		790
Tensile Strength: Ultimate (UTS), MPa		310 to 630

Tensile Strength: Yield (Proof), MPa		580
Tensile Strength: Yield (Proof), MPa		120 to 590

Thermal Properties

Latent Heat of Fusion, J/g		170
Latent Heat of Fusion, J/g		200

Specific Heat Capacity, J/kg-K		130
Specific Heat Capacity, J/kg-K		380

Thermal Conductivity, W/m-K		30
Thermal Conductivity, W/m-K		120

Thermal Expansion, µm/m-K		4.5
Thermal Expansion, µm/m-K		18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		17
Electrical Conductivity: Equal Volume, % IACS		28

Electrical Conductivity: Equal Weight (Specific), % IACS		9.7
Electrical Conductivity: Equal Weight (Specific), % IACS		29

Otherwise Unclassified Properties

Density, g/cm³		16
Density, g/cm³		8.7

Embodied Carbon, kg CO₂/kg material		24
Embodied Carbon, kg CO₂/kg material		2.8

Embodied Energy, MJ/kg		360
Embodied Energy, MJ/kg		46

Embodied Water, L/kg		150
Embodied Water, L/kg		330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		16
Resilience: Ultimate (Unit Rupture Work), MJ/m³		12 to 130

Resilience: Unit (Modulus of Resilience), kJ/m³		620
Resilience: Unit (Modulus of Resilience), kJ/m³		64 to 1570

Stiffness to Weight: Axial, points		9.6
Stiffness to Weight: Axial, points		7.1

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

Strength to Weight: Axial, points		14
Strength to Weight: Axial, points		9.9 to 20

Strength to Weight: Bending, points		12
Strength to Weight: Bending, points		12 to 19

Thermal Diffusivity, mm²/s		15
Thermal Diffusivity, mm²/s		36

Thermal Shock Resistance, points		46
Thermal Shock Resistance, points		11 to 22

Alloy Composition

Copper (Cu), %		0
Copper (Cu), %		87 to 90

Iron (Fe), %		0
Iron (Fe), %		0 to 0.050

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

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.35

Tin (Sn), %		0
Tin (Sn), %		1.5 to 3.0

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

Zinc (Zn), %		0
Zinc (Zn), %		6.1 to 11.5

Residuals, %		0
Residuals, %		0 to 0.5