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Class 4 Tungsten vs. AWS ENiCu-7

Class 4 tungsten belongs to the otherwise unclassified metals classification, while AWS ENiCu-7 belongs to the nickel alloys. There are 21 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 4 tungsten and the bottom bar is AWS ENiCu-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 270
160
Elongation at Break, % 2.3
34
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 110
62
Tensile Strength: Ultimate (UTS), MPa 790
550

Thermal Properties

Latent Heat of Fusion, J/g 170
280
Specific Heat Capacity, J/kg-K 130
430
Thermal Conductivity, W/m-K 30
21
Thermal Expansion, µm/m-K 4.5
13

Electrical Properties

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

Otherwise Unclassified Properties

Density, g/cm3 16
8.7
Embodied Carbon, kg CO2/kg material 24
8.0
Embodied Energy, MJ/kg 360
110
Embodied Water, L/kg 150
250

Common Calculations

Stiffness to Weight: Axial, points 9.6
10
Stiffness to Weight: Bending, points 14
21
Strength to Weight: Axial, points 14
17
Strength to Weight: Bending, points 12
17
Thermal Diffusivity, mm2/s 15
5.5
Thermal Shock Resistance, points 46
18

Alloy Composition

Aluminum (Al), % 0
0 to 0.75
Carbon (C), % 0
0 to 0.1
Copper (Cu), % 0
20.6 to 38
Iron (Fe), % 0
0 to 2.5
Manganese (Mn), % 0
0 to 4.0
Nickel (Ni), % 0
62 to 69
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 1.5
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
0 to 1.0
Tungsten (W), % 97
0
Residuals, % 0
0 to 0.5