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Class 2 Tungsten vs. S31655 Stainless Steel

Class 2 tungsten belongs to the otherwise unclassified metals classification, while S31655 stainless steel belongs to the iron alloys. There are 24 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 2 tungsten and the bottom bar is S31655 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 260
200
Elongation at Break, % 5.7
39
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 100
78
Tensile Strength: Ultimate (UTS), MPa 860
710
Tensile Strength: Yield (Proof), MPa 580
350

Thermal Properties

Latent Heat of Fusion, J/g 160
290
Specific Heat Capacity, J/kg-K 120
480
Thermal Conductivity, W/m-K 20
15
Thermal Expansion, µm/m-K 4.6
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 7.8
2.7

Otherwise Unclassified Properties

Density, g/cm3 15
7.8
Embodied Carbon, kg CO2/kg material 23
3.3
Embodied Energy, MJ/kg 350
46
Embodied Water, L/kg 140
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44
230
Resilience: Unit (Modulus of Resilience), kJ/m3 640
310
Stiffness to Weight: Axial, points 9.6
14
Stiffness to Weight: Bending, points 14
25
Strength to Weight: Axial, points 16
25
Strength to Weight: Bending, points 13
23
Thermal Diffusivity, mm2/s 11
4.0
Thermal Shock Resistance, points 52
16

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
19.5 to 21.5
Copper (Cu), % 0
0 to 1.0
Iron (Fe), % 0
63.2 to 71.9
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
0.5 to 1.5
Nickel (Ni), % 0
8.0 to 9.5
Nitrogen (N), % 0
0.14 to 0.25
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Tungsten (W), % 92.5
0
Residuals, % 7.5
0