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Solder Alloy 703 vs. Class 4 Tungsten

Both solder alloy 703 and class 4 tungsten 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. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is solder alloy 703 and the bottom bar is class 4 tungsten.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
270
Elongation at Break, % 35
2.3
Poisson's Ratio 0.36
0.28
Shear Modulus, GPa 19
110
Tensile Strength: Ultimate (UTS), MPa 57
790

Thermal Properties

Latent Heat of Fusion, J/g 61
170
Specific Heat Capacity, J/kg-K 220
130
Thermal Conductivity, W/m-K 55
30
Thermal Expansion, µm/m-K 22
4.5

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
17
Electrical Conductivity: Equal Weight (Specific), % IACS 17
9.7

Otherwise Unclassified Properties

Density, g/cm3 7.4
16
Embodied Carbon, kg CO2/kg material 18
24
Embodied Energy, MJ/kg 300
360

Common Calculations

Stiffness to Weight: Axial, points 3.8
9.6
Stiffness to Weight: Bending, points 17
14
Strength to Weight: Axial, points 2.1
14
Strength to Weight: Bending, points 4.4
12
Thermal Diffusivity, mm2/s 33
15
Thermal Shock Resistance, points 3.7
46

Alloy Composition


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Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.1
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.1
0
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.050
0
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0
Lead (Pb), % 0 to 0.070
0
Nickel (Ni), % 0 to 0.010
0
Silver (Ag), % 3.3 to 3.7
0
Tin (Sn), % 95.8 to 96.7
0
Tungsten (W), % 0
97
Zinc (Zn), % 0 to 0.0010
0
Residuals, % 0
3.0