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Class 1 Tungsten vs. SAE-AISI S1 Steel

Class 1 tungsten belongs to the otherwise unclassified metals classification, while SAE-AISI S1 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 1 tungsten and the bottom bar is SAE-AISI S1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 250
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 98
73
Tensile Strength: Ultimate (UTS), MPa 860
690 to 1840

Thermal Properties

Latent Heat of Fusion, J/g 160
260
Specific Heat Capacity, J/kg-K 120
470
Thermal Conductivity, W/m-K 21
41
Thermal Expansion, µm/m-K 5.1
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 7.4
8.7

Otherwise Unclassified Properties

Density, g/cm3 15
8.0
Embodied Carbon, kg CO2/kg material 22
2.6
Embodied Energy, MJ/kg 340
37
Embodied Water, L/kg 140
56

Common Calculations

Stiffness to Weight: Axial, points 9.6
13
Stiffness to Weight: Bending, points 14
24
Strength to Weight: Axial, points 16
24 to 64
Strength to Weight: Bending, points 14
22 to 42
Thermal Diffusivity, mm2/s 12
11
Thermal Shock Resistance, points 48
21 to 56

Alloy Composition

Carbon (C), % 0
0.4 to 0.55
Chromium (Cr), % 0
1.0 to 1.8
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0
91.6 to 96.7
Manganese (Mn), % 0
0.1 to 0.4
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0.15 to 1.2
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 90
1.5 to 3.0
Vanadium (V), % 0
0.15 to 0.3
Residuals, % 10
0