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Class 2 Tungsten vs. S44800 Stainless Steel

Class 2 tungsten belongs to the otherwise unclassified metals classification, while S44800 stainless steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is class 2 tungsten and the bottom bar is S44800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 260
210
Elongation at Break, % 5.7
23
Poisson's Ratio 0.28
0.27
Rockwell C Hardness 29
18
Shear Modulus, GPa 100
82
Tensile Strength: Ultimate (UTS), MPa 860
590
Tensile Strength: Yield (Proof), MPa 580
450

Thermal Properties

Latent Heat of Fusion, J/g 160
300
Specific Heat Capacity, J/kg-K 120
480
Thermal Conductivity, W/m-K 20
17
Thermal Expansion, µm/m-K 4.6
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 7.8
3.0

Otherwise Unclassified Properties

Density, g/cm3 15
7.8
Embodied Carbon, kg CO2/kg material 23
3.8
Embodied Energy, MJ/kg 350
52
Embodied Water, L/kg 140
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44
120
Resilience: Unit (Modulus of Resilience), kJ/m3 640
480
Stiffness to Weight: Axial, points 9.6
15
Stiffness to Weight: Bending, points 14
25
Strength to Weight: Axial, points 16
21
Strength to Weight: Bending, points 13
20
Thermal Diffusivity, mm2/s 11
4.6
Thermal Shock Resistance, points 52
19

Alloy Composition

Carbon (C), % 0
0 to 0.010
Chromium (Cr), % 0
28 to 30
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 0
62.6 to 66.5
Manganese (Mn), % 0
0 to 0.3
Molybdenum (Mo), % 0
3.5 to 4.2
Nickel (Ni), % 0
2.0 to 2.5
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0 to 0.2
Sulfur (S), % 0
0 to 0.020
Tungsten (W), % 92.5
0
Residuals, % 7.5
0