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Class 2 Tungsten vs. EN 1.6781 Steel

Class 2 tungsten belongs to the otherwise unclassified metals classification, while EN 1.6781 steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is class 2 tungsten and the bottom bar is EN 1.6781 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 260
190
Elongation at Break, % 5.7
17
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 100
73
Tensile Strength: Ultimate (UTS), MPa 860
830
Tensile Strength: Yield (Proof), MPa 580
680

Thermal Properties

Latent Heat of Fusion, J/g 160
260
Specific Heat Capacity, J/kg-K 120
470
Thermal Conductivity, W/m-K 20
44
Thermal Expansion, µm/m-K 4.6
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 7.8
9.1

Otherwise Unclassified Properties

Density, g/cm3 15
7.9
Embodied Carbon, kg CO2/kg material 23
1.9
Embodied Energy, MJ/kg 350
25
Embodied Water, L/kg 140
60

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44
130
Resilience: Unit (Modulus of Resilience), kJ/m3 640
1220
Stiffness to Weight: Axial, points 9.6
13
Stiffness to Weight: Bending, points 14
24
Strength to Weight: Axial, points 16
29
Strength to Weight: Bending, points 13
25
Thermal Diffusivity, mm2/s 11
12
Thermal Shock Resistance, points 52
24

Alloy Composition

Carbon (C), % 0
0.15 to 0.19
Chromium (Cr), % 0
1.3 to 1.8
Iron (Fe), % 0
92.6 to 94.6
Manganese (Mn), % 0
0.55 to 0.8
Molybdenum (Mo), % 0
0.45 to 0.6
Nickel (Ni), % 0
3.0 to 3.5
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Tungsten (W), % 92.5
0
Residuals, % 7.5
0