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Class 3 Tungsten vs. ACI-ASTM CB7Cu-2 Steel

Class 3 tungsten belongs to the otherwise unclassified metals classification, while ACI-ASTM CB7Cu-2 steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is class 3 tungsten and the bottom bar is ACI-ASTM CB7Cu-2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 270
190
Elongation at Break, % 3.4
5.7 to 11
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 100
75
Tensile Strength: Ultimate (UTS), MPa 830
960 to 1350
Tensile Strength: Yield (Proof), MPa 580
760 to 1180

Thermal Properties

Latent Heat of Fusion, J/g 170
280
Specific Heat Capacity, J/kg-K 120
480
Thermal Conductivity, W/m-K 30
17
Thermal Expansion, µm/m-K 4.5
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
2.4

Otherwise Unclassified Properties

Density, g/cm3 15
7.8
Embodied Carbon, kg CO2/kg material 23
2.6
Embodied Energy, MJ/kg 360
38
Embodied Water, L/kg 150
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 25
71 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 630
1510 to 3600
Stiffness to Weight: Axial, points 9.6
14
Stiffness to Weight: Bending, points 14
25
Strength to Weight: Axial, points 15
34 to 48
Strength to Weight: Bending, points 13
28 to 35
Thermal Diffusivity, mm2/s 15
4.6
Thermal Shock Resistance, points 49
32 to 45

Alloy Composition

Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0
14 to 15.5
Copper (Cu), % 0
2.5 to 3.2
Iron (Fe), % 0
73.6 to 79
Manganese (Mn), % 0
0 to 0.7
Nickel (Ni), % 0
4.5 to 5.5
Niobium (Nb), % 0
0 to 0.35
Nitrogen (N), % 0
0 to 0.050
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 95
0
Residuals, % 5.0
0