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SAE-AISI S6 Steel vs. Class 4 Tungsten

SAE-AISI S6 steel belongs to the iron alloys classification, while class 4 tungsten belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is SAE-AISI S6 steel and the bottom bar is class 4 tungsten.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
270
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
110
Tensile Strength: Ultimate (UTS), MPa 670 to 1920
790

Thermal Properties

Latent Heat of Fusion, J/g 290
170
Specific Heat Capacity, J/kg-K 480
130
Thermal Conductivity, W/m-K 41
30
Thermal Expansion, µm/m-K 12
4.5

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
17
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
9.7

Otherwise Unclassified Properties

Density, g/cm3 7.7
16
Embodied Carbon, kg CO2/kg material 2.3
24
Embodied Energy, MJ/kg 33
360
Embodied Water, L/kg 56
150

Common Calculations

Stiffness to Weight: Axial, points 13
9.6
Stiffness to Weight: Bending, points 25
14
Strength to Weight: Axial, points 24 to 70
14
Strength to Weight: Bending, points 22 to 45
12
Thermal Diffusivity, mm2/s 11
15
Thermal Shock Resistance, points 22 to 64
46

Alloy Composition

Carbon (C), % 0.4 to 0.5
0
Chromium (Cr), % 1.2 to 1.5
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 92.8 to 94.7
0
Manganese (Mn), % 1.2 to 1.5
0
Molybdenum (Mo), % 0.3 to 0.5
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 2.0 to 2.5
0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 0
97
Vanadium (V), % 0.2 to 0.4
0
Residuals, % 0
3.0