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Solder Alloy 721 vs. Nickel 242

Solder alloy 721 belongs to the otherwise unclassified metals classification, while nickel 242 belongs to the nickel alloys. There are 22 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 solder alloy 721 and the bottom bar is nickel 242.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
220
Elongation at Break, % 17
45
Poisson's Ratio 0.36
0.3
Shear Modulus, GPa 19
84
Tensile Strength: Ultimate (UTS), MPa 50
820

Thermal Properties

Latent Heat of Fusion, J/g 61
330
Melting Completion (Liquidus), °C 220
1380
Melting Onset (Solidus), °C 210
1290
Specific Heat Capacity, J/kg-K 220
400
Thermal Conductivity, W/m-K 56
11
Thermal Expansion, µm/m-K 22
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 17
1.4

Otherwise Unclassified Properties

Density, g/cm3 7.4
9.0
Embodied Carbon, kg CO2/kg material 17
14
Embodied Energy, MJ/kg 280
180

Common Calculations

Stiffness to Weight: Axial, points 3.8
13
Stiffness to Weight: Bending, points 17
22
Strength to Weight: Axial, points 1.9
25
Strength to Weight: Bending, points 4.1
21
Thermal Diffusivity, mm2/s 34
3.1
Thermal Shock Resistance, points 3.2
25

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.5
Antimony (Sb), % 0 to 0.1
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0.8 to 1.2
0
Boron (B), % 0
0 to 0.0060
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
7.0 to 9.0
Cobalt (Co), % 0
0 to 1.0
Copper (Cu), % 0.3 to 0.7
0 to 0.5
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 2.0
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
0 to 0.8
Molybdenum (Mo), % 0
24 to 26
Nickel (Ni), % 0 to 0.010
59.3 to 69
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.8
Silver (Ag), % 2.3 to 2.7
0
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 95 to 96.6
0
Zinc (Zn), % 0 to 0.0010
0