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Solder Alloy 181 vs. Type 1 Niobium

Both solder alloy 181 and Type 1 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 181 and the bottom bar is Type 1 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 18
110
Elongation at Break, % 41
29
Poisson's Ratio 0.44
0.4
Shear Modulus, GPa 6.1
38
Tensile Strength: Ultimate (UTS), MPa 27
140

Thermal Properties

Latent Heat of Fusion, J/g 26
320
Specific Heat Capacity, J/kg-K 130
270
Thermal Conductivity, W/m-K 24
52
Thermal Expansion, µm/m-K 29
7.3

Otherwise Unclassified Properties

Density, g/cm3 11
8.6

Common Calculations

Stiffness to Weight: Axial, points 0.86
6.8
Stiffness to Weight: Bending, points 7.7
18
Strength to Weight: Axial, points 0.66
4.6
Strength to Weight: Bending, points 1.8
7.1
Thermal Diffusivity, mm2/s 16
23
Thermal Shock Resistance, points 3.8
13

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.2
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 0.080
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 0.0050
Lead (Pb), % 96.2 to 98
0
Molybdenum (Mo), % 0
0 to 0.010
Nickel (Ni), % 0 to 0.010
0 to 0.0050
Niobium (Nb), % 0
99.7 to 100
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Silicon (Si), % 0
0 to 0.0050
Silver (Ag), % 2.0 to 3.0
0
Tantalum (Ta), % 0
0 to 0.1
Tin (Sn), % 0 to 0.25
0
Titanium (Ti), % 0
0 to 0.020
Tungsten (W), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.0010
0
Zirconium (Zr), % 0
0 to 0.020