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Class 3 Tungsten vs. Solder Alloy 704

Both class 3 tungsten and solder alloy 704 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. There are 20 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 704.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 270
51
Elongation at Break, % 3.4
30
Poisson's Ratio 0.28
0.36
Shear Modulus, GPa 100
19
Tensile Strength: Ultimate (UTS), MPa 830
55

Thermal Properties

Latent Heat of Fusion, J/g 170
62
Specific Heat Capacity, J/kg-K 120
220
Thermal Conductivity, W/m-K 30
50
Thermal Expansion, µm/m-K 4.5
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
13
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
15

Otherwise Unclassified Properties

Density, g/cm3 15
7.5
Embodied Carbon, kg CO2/kg material 23
19
Embodied Energy, MJ/kg 360
320

Common Calculations

Stiffness to Weight: Axial, points 9.6
3.8
Stiffness to Weight: Bending, points 14
17
Strength to Weight: Axial, points 15
2.1
Strength to Weight: Bending, points 13
4.3
Thermal Diffusivity, mm2/s 15
30
Thermal Shock Resistance, points 49
3.5

Alloy Composition

Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
0 to 0.1
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.1
Cadmium (Cd), % 0
0 to 0.0020
Copper (Cu), % 0
0 to 0.050
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0
0 to 0.020
Lead (Pb), % 0
0 to 0.070
Nickel (Ni), % 0
0 to 0.010
Silver (Ag), % 0
4.8 to 5.2
Tin (Sn), % 0
94.3 to 95.2
Tungsten (W), % 95
0
Zinc (Zn), % 0
0 to 0.0010
Residuals, % 5.0
0