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Class 3 Tungsten vs. Solder Alloy 121

Both class 3 tungsten and solder alloy 121 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 (8, in this case) are not shown.

For each property being compared, the top bar is class 3 tungsten and the bottom bar is solder alloy 121.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 270
21
Elongation at Break, % 3.4
25
Poisson's Ratio 0.28
0.43
Shear Modulus, GPa 100
7.5
Tensile Strength: Ultimate (UTS), MPa 830
32

Thermal Properties

Latent Heat of Fusion, J/g 170
29
Specific Heat Capacity, J/kg-K 120
140
Thermal Conductivity, W/m-K 30
31
Thermal Expansion, µm/m-K 4.5
28

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
8.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
7.4

Otherwise Unclassified Properties

Density, g/cm3 15
11
Embodied Carbon, kg CO2/kg material 23
5.6
Embodied Energy, MJ/kg 360
93
Embodied Water, L/kg 150
580

Common Calculations

Stiffness to Weight: Axial, points 9.6
1.1
Stiffness to Weight: Bending, points 14
8.6
Strength to Weight: Axial, points 15
0.84
Strength to Weight: Bending, points 13
2.1
Thermal Diffusivity, mm2/s 15
20
Thermal Shock Resistance, points 49
3.9

Alloy Composition

Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
0 to 0.5
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
83.4 to 85.5
Nickel (Ni), % 0
0 to 0.010
Silver (Ag), % 0
0 to 0.1
Tin (Sn), % 0
14.5 to 15.5
Tungsten (W), % 95
0
Zinc (Zn), % 0
0 to 0.0010
Residuals, % 5.0
0