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Solder Alloy 191 vs. Nickel 685

Solder alloy 191 belongs to the otherwise unclassified metals classification, while nickel 685 belongs to the nickel alloys. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is solder alloy 191 and the bottom bar is nickel 685.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 19
200
Elongation at Break, % 32
17
Poisson's Ratio 0.43
0.29
Shear Modulus, GPa 6.5
77
Tensile Strength: Ultimate (UTS), MPa 29
1250

Thermal Properties

Latent Heat of Fusion, J/g 27
320
Melting Completion (Liquidus), °C 300
1380
Melting Onset (Solidus), °C 300
1330
Specific Heat Capacity, J/kg-K 130
460
Thermal Conductivity, W/m-K 24
13
Thermal Expansion, µm/m-K 29
12

Otherwise Unclassified Properties

Density, g/cm3 11
8.4
Embodied Carbon, kg CO2/kg material 5.8
10
Embodied Energy, MJ/kg 95
140

Common Calculations

Stiffness to Weight: Axial, points 0.93
13
Stiffness to Weight: Bending, points 8.0
23
Strength to Weight: Axial, points 0.72
42
Strength to Weight: Bending, points 1.9
31
Thermal Diffusivity, mm2/s 16
3.3
Thermal Shock Resistance, points 3.9
37

Alloy Composition

Aluminum (Al), % 0 to 0.0010
1.2 to 1.6
Antimony (Sb), % 0 to 0.2
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.1
0
Boron (B), % 0
0.0030 to 0.010
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0.030 to 0.1
Chromium (Cr), % 0
18 to 21
Cobalt (Co), % 0
12 to 15
Copper (Cu), % 0 to 0.080
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), % 92.4 to 94
0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
3.5 to 5.0
Nickel (Ni), % 0 to 0.010
49.6 to 62.5
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.75
Silver (Ag), % 1.2 to 1.8
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 4.8 to 5.2
0
Titanium (Ti), % 0
2.8 to 3.3
Zinc (Zn), % 0 to 0.0010
0.020 to 0.12