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Solder Alloy 704 vs. Nickel 686

Solder alloy 704 belongs to the otherwise unclassified metals classification, while nickel 686 belongs to the nickel alloys. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is solder alloy 704 and the bottom bar is nickel 686.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
220
Elongation at Break, % 30
51
Poisson's Ratio 0.36
0.29
Shear Modulus, GPa 19
77
Tensile Strength: Ultimate (UTS), MPa 55
780

Thermal Properties

Latent Heat of Fusion, J/g 62
320
Melting Completion (Liquidus), °C 240
1380
Melting Onset (Solidus), °C 220
1340
Specific Heat Capacity, J/kg-K 220
420
Thermal Conductivity, W/m-K 50
9.8
Thermal Expansion, µm/m-K 22
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 15
1.4

Otherwise Unclassified Properties

Density, g/cm3 7.5
9.0
Embodied Carbon, kg CO2/kg material 19
12
Embodied Energy, MJ/kg 320
170

Common Calculations

Stiffness to Weight: Axial, points 3.8
14
Stiffness to Weight: Bending, points 17
22
Strength to Weight: Axial, points 2.1
24
Strength to Weight: Bending, points 4.3
21
Thermal Diffusivity, mm2/s 30
2.6
Thermal Shock Resistance, points 3.5
21

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
Chromium (Cr), % 0
19 to 23
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 to 5.0
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
0 to 0.75
Molybdenum (Mo), % 0
15 to 17
Nickel (Ni), % 0 to 0.010
49.5 to 63
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 0.080
Silver (Ag), % 4.8 to 5.2
0
Sulfur (S), % 0
0 to 0.020
Tin (Sn), % 94.3 to 95.2
0
Titanium (Ti), % 0
0.020 to 0.25
Tungsten (W), % 0
3.0 to 4.4
Zinc (Zn), % 0 to 0.0010
0