Class 4 Tungsten vs. EN 1.3558 Steel

Class 4 tungsten belongs to the otherwise unclassified metals classification, while EN 1.3558 steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is class 4 tungsten and the bottom bar is EN 1.3558 steel.

Class 4 Tungsten EN 1.3558 (X75WCrV18-4-1) High-Temperature Bearing Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		270
Elastic (Young's, Tensile) Modulus, GPa		210

Poisson's Ratio		0.28
Poisson's Ratio		0.29

Shear Modulus, GPa		110
Shear Modulus, GPa		80

Tensile Strength: Ultimate (UTS), MPa		790
Tensile Strength: Ultimate (UTS), MPa		770

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		20

Thermal Expansion, µm/m-K		4.5
Thermal Expansion, µm/m-K		12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		17
Electrical Conductivity: Equal Volume, % IACS		13

Electrical Conductivity: Equal Weight (Specific), % IACS		9.7
Electrical Conductivity: Equal Weight (Specific), % IACS		12

Otherwise Unclassified Properties

Density, g/cm³		16
Density, g/cm³		9.3

Embodied Carbon, kg CO₂/kg material		24
Embodied Carbon, kg CO₂/kg material		8.4

Embodied Energy, MJ/kg		360
Embodied Energy, MJ/kg		130

Embodied Water, L/kg		150
Embodied Water, L/kg		90

Common Calculations

Stiffness to Weight: Axial, points		9.6
Stiffness to Weight: Axial, points		12

Stiffness to Weight: Bending, points		14
Stiffness to Weight: Bending, points		21

Strength to Weight: Axial, points		14
Strength to Weight: Axial, points		23

Strength to Weight: Bending, points		12
Strength to Weight: Bending, points		20

Thermal Diffusivity, mm²/s		15
Thermal Diffusivity, mm²/s		5.3

Thermal Shock Resistance, points		46
Thermal Shock Resistance, points		22

Alloy Composition

Carbon (C), %		0
Carbon (C), %		0.7 to 0.8

Chromium (Cr), %		0
Chromium (Cr), %		3.9 to 4.3

Copper (Cu), %		0
Copper (Cu), %		0 to 0.3

Iron (Fe), %		0
Iron (Fe), %		73.7 to 77.6

Manganese (Mn), %		0
Manganese (Mn), %		0 to 0.4

Molybdenum (Mo), %		0
Molybdenum (Mo), %		0 to 0.6

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.025

Silicon (Si), %		0
Silicon (Si), %		0 to 0.4

Sulfur (S), %		0
Sulfur (S), %		0 to 0.015

Tungsten (W), %		97
Tungsten (W), %		17.5 to 19

Vanadium (V), %		0
Vanadium (V), %		1.0 to 1.3

Residuals, %		3.0
Residuals, %		0