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Class 4 Tungsten vs. Solder Alloy 137

Both class 4 tungsten and solder alloy 137 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. 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 solder alloy 137.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 270
24
Elongation at Break, % 2.3
19
Poisson's Ratio 0.28
0.42
Shear Modulus, GPa 110
8.3
Tensile Strength: Ultimate (UTS), MPa 790
34

Thermal Properties

Latent Heat of Fusion, J/g 170
33
Specific Heat Capacity, J/kg-K 130
150
Thermal Conductivity, W/m-K 30
38
Thermal Expansion, µm/m-K 4.5
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
8.9
Electrical Conductivity: Equal Weight (Specific), % IACS 9.7
7.7

Otherwise Unclassified Properties

Density, g/cm3 16
10
Embodied Carbon, kg CO2/kg material 24
6.3
Embodied Energy, MJ/kg 360
100
Embodied Water, L/kg 150
660

Common Calculations

Stiffness to Weight: Axial, points 9.6
1.3
Stiffness to Weight: Bending, points 14
9.2
Strength to Weight: Axial, points 14
0.9
Strength to Weight: Bending, points 12
2.2
Thermal Diffusivity, mm2/s 15
25
Thermal Shock Resistance, points 46
3.7

Alloy Composition


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Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
0.5 to 3.0
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.25
Cadmium (Cd), % 0
0 to 0.0050
Copper (Cu), % 0
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0
0 to 0.020
Lead (Pb), % 0
75.9 to 80
Nickel (Ni), % 0
0 to 0.010
Silver (Ag), % 0
0 to 0.1
Tin (Sn), % 0
19.5 to 20.5
Tungsten (W), % 97
0
Zinc (Zn), % 0
0 to 0.0010
Residuals, % 3.0
0