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Solder Alloy 702 vs. Type 2 Niobium

Both solder alloy 702 and Type 2 niobium are otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is solder alloy 702 and the bottom bar is Type 2 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
110
Elongation at Break, % 21
29
Poisson's Ratio 0.36
0.4
Shear Modulus, GPa 19
38
Tensile Strength: Ultimate (UTS), MPa 53
140

Thermal Properties

Latent Heat of Fusion, J/g 61
320
Specific Heat Capacity, J/kg-K 220
270
Thermal Conductivity, W/m-K 62
52
Thermal Expansion, µm/m-K 22
7.3

Otherwise Unclassified Properties

Density, g/cm3 7.4
8.6

Common Calculations

Stiffness to Weight: Axial, points 3.8
6.8
Stiffness to Weight: Bending, points 17
18
Strength to Weight: Axial, points 2.0
4.6
Strength to Weight: Bending, points 4.2
7.1
Thermal Diffusivity, mm2/s 38
23
Thermal Shock Resistance, points 3.4
13

Alloy Composition

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
Carbon (C), % 0
0 to 0.010
Copper (Cu), % 0 to 0.050
0
Gold (Au), % 0 to 0.050
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.010
Lead (Pb), % 0 to 0.070
0
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 0 to 0.010
0 to 0.0050
Niobium (Nb), % 0
99.5 to 100
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.025
Silicon (Si), % 0
0 to 0.0050
Silver (Ag), % 2.8 to 3.2
0
Tantalum (Ta), % 0
0 to 0.3
Tin (Sn), % 96.3 to 97.2
0
Titanium (Ti), % 0
0 to 0.030
Tungsten (W), % 0
0 to 0.050
Zinc (Zn), % 0 to 0.0010
0
Zirconium (Zr), % 0
0 to 0.020