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Solder Alloy 142 vs. 85-platinum 15-iridium

Both solder alloy 142 and 85-platinum 15-iridium are otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (6, 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 142 and the bottom bar is 85-platinum 15-iridium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 33
220
Elongation at Break, % 37
5.5 to 34
Poisson's Ratio 0.4
0.38
Shear Modulus, GPa 12
81
Tensile Strength: Ultimate (UTS), MPa 43
560 to 730

Thermal Properties

Latent Heat of Fusion, J/g 42
110
Melting Completion (Liquidus), °C 210
1820
Melting Onset (Solidus), °C 180
1790
Specific Heat Capacity, J/kg-K 170
130
Thermal Expansion, µm/m-K 25
8.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
6.2
Electrical Conductivity: Equal Weight (Specific), % IACS 11
2.6

Otherwise Unclassified Properties

Density, g/cm3 9.3
22

Common Calculations

Stiffness to Weight: Axial, points 2.0
5.7
Stiffness to Weight: Bending, points 11
9.3
Strength to Weight: Axial, points 1.3
7.1 to 9.3
Strength to Weight: Bending, points 2.9
6.9 to 8.3
Thermal Shock Resistance, points 3.7
21 to 28

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), % 2.5 to 3.5
0
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.080
0
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iridium (Ir), % 0
14.5 to 15.5
Iron (Fe), % 0 to 0.020
0
Lead (Pb), % 47.4 to 50
0
Nickel (Ni), % 0 to 0.010
0
Platinum (Pt), % 0
84.3 to 85.5
Silver (Ag), % 0 to 0.1
0
Tin (Sn), % 47.5 to 48.5
0
Zinc (Zn), % 0 to 0.0010
0
Residuals, % 0
0 to 0.2