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Solder Alloy 181 vs. R30003 Cobalt

Solder alloy 181 belongs to the otherwise unclassified metals classification, while R30003 cobalt belongs to the cobalt alloys. There are 22 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is solder alloy 181 and the bottom bar is R30003 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 18
210
Elongation at Break, % 41
10 to 73
Poisson's Ratio 0.44
0.29
Shear Modulus, GPa 6.1
83
Tensile Strength: Ultimate (UTS), MPa 27
970 to 1720

Thermal Properties

Latent Heat of Fusion, J/g 26
310
Melting Completion (Liquidus), °C 310
1400
Melting Onset (Solidus), °C 300
1440
Specific Heat Capacity, J/kg-K 130
450
Thermal Conductivity, W/m-K 24
13
Thermal Expansion, µm/m-K 29
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.3
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 7.4
2.1

Otherwise Unclassified Properties

Density, g/cm3 11
8.4
Embodied Carbon, kg CO2/kg material 6.2
8.0
Embodied Energy, MJ/kg 100
110

Common Calculations

Stiffness to Weight: Axial, points 0.86
14
Stiffness to Weight: Bending, points 7.7
24
Strength to Weight: Axial, points 0.66
32 to 57
Strength to Weight: Bending, points 1.8
26 to 38
Thermal Diffusivity, mm2/s 16
3.3
Thermal Shock Resistance, points 3.8
26 to 45

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
Boron (B), % 0
0 to 0.1
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
39 to 41
Copper (Cu), % 0 to 0.080
0
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
10 to 20.5
Lead (Pb), % 96.2 to 98
0
Manganese (Mn), % 0
1.5 to 2.5
Molybdenum (Mo), % 0
6.0 to 8.0
Nickel (Ni), % 0 to 0.010
14 to 16
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0
0 to 1.2
Silver (Ag), % 2.0 to 3.0
0
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.0010
0