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Class 4 Tungsten vs. S41003 Stainless Steel

Class 4 tungsten belongs to the otherwise unclassified metals classification, while S41003 stainless steel belongs to the iron alloys. There are 25 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 class 4 tungsten and the bottom bar is S41003 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 270
190
Elongation at Break, % 2.3
21
Poisson's Ratio 0.28
0.28
Rockwell C Hardness 31
17
Shear Modulus, GPa 110
76
Tensile Strength: Ultimate (UTS), MPa 790
520
Tensile Strength: Yield (Proof), MPa 580
310

Thermal Properties

Latent Heat of Fusion, J/g 170
270
Specific Heat Capacity, J/kg-K 130
480
Thermal Conductivity, W/m-K 30
27
Thermal Expansion, µm/m-K 4.5
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 9.7
3.3

Otherwise Unclassified Properties

Density, g/cm3 16
7.8
Embodied Carbon, kg CO2/kg material 24
1.9
Embodied Energy, MJ/kg 360
27
Embodied Water, L/kg 150
97

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16
92
Resilience: Unit (Modulus of Resilience), kJ/m3 620
240
Stiffness to Weight: Axial, points 9.6
14
Stiffness to Weight: Bending, points 14
25
Strength to Weight: Axial, points 14
19
Strength to Weight: Bending, points 12
18
Thermal Diffusivity, mm2/s 15
7.2
Thermal Shock Resistance, points 46
19

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
10.5 to 12.5
Iron (Fe), % 0
83.4 to 89.5
Manganese (Mn), % 0
0 to 1.5
Nickel (Ni), % 0
0 to 1.5
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 97
0
Residuals, % 3.0
0