Class 3 Tungsten vs. SAE-AISI A8 Steel

Class 3 tungsten belongs to the otherwise unclassified metals classification, while SAE-AISI A8 steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is class 3 tungsten and the bottom bar is SAE-AISI A8 steel.

Class 3 Tungsten SAE-AISI A8 (T30108) Air-Hardening Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		270
Elastic (Young's, Tensile) Modulus, GPa		190

Poisson's Ratio		0.28
Poisson's Ratio		0.29

Shear Modulus, GPa		100
Shear Modulus, GPa		74

Tensile Strength: Ultimate (UTS), MPa		830
Tensile Strength: Ultimate (UTS), MPa		700 to 1920

Thermal Properties

Latent Heat of Fusion, J/g		170
Latent Heat of Fusion, J/g		270

Specific Heat Capacity, J/kg-K		120
Specific Heat Capacity, J/kg-K		470

Thermal Conductivity, W/m-K		30
Thermal Conductivity, W/m-K		37

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

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		15
Electrical Conductivity: Equal Volume, % IACS		8.3

Electrical Conductivity: Equal Weight (Specific), % IACS		8.5
Electrical Conductivity: Equal Weight (Specific), % IACS		9.5

Otherwise Unclassified Properties

Density, g/cm³		15
Density, g/cm³		7.9

Embodied Carbon, kg CO₂/kg material		23
Embodied Carbon, kg CO₂/kg material		2.3

Embodied Energy, MJ/kg		360
Embodied Energy, MJ/kg		31

Embodied Water, L/kg		150
Embodied Water, L/kg		73

Common Calculations

Stiffness to Weight: Axial, points		9.6
Stiffness to Weight: Axial, points		14

Stiffness to Weight: Bending, points		14
Stiffness to Weight: Bending, points		24

Strength to Weight: Axial, points		15
Strength to Weight: Axial, points		25 to 68

Strength to Weight: Bending, points		13
Strength to Weight: Bending, points		22 to 44

Thermal Diffusivity, mm²/s		15
Thermal Diffusivity, mm²/s		9.9

Thermal Shock Resistance, points		49
Thermal Shock Resistance, points		22 to 62

Alloy Composition

Carbon (C), %		0
Carbon (C), %		0.5 to 0.6

Chromium (Cr), %		0
Chromium (Cr), %		4.8 to 5.5

Copper (Cu), %		0
Copper (Cu), %		0 to 0.25

Iron (Fe), %		0
Iron (Fe), %		88.5 to 91.9

Manganese (Mn), %		0
Manganese (Mn), %		0 to 0.5

Molybdenum (Mo), %		0
Molybdenum (Mo), %		1.2 to 1.7

Nickel (Ni), %		0
Nickel (Ni), %		0 to 0.3

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.030

Silicon (Si), %		0
Silicon (Si), %		0.75 to 1.1

Sulfur (S), %		0
Sulfur (S), %		0 to 0.030

Tungsten (W), %		95
Tungsten (W), %		1.0 to 1.5

Residuals, %		5.0
Residuals, %		0