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Solder Alloy 811 vs. R30605 Cobalt

Solder alloy 811 belongs to the otherwise unclassified metals classification, while R30605 cobalt belongs to the cobalt alloys. There are 23 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is solder alloy 811 and the bottom bar is R30605 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 52
210
Elongation at Break, % 38
34
Poisson's Ratio 0.35
0.29
Shear Modulus, GPa 19
81
Tensile Strength: Ultimate (UTS), MPa 53
1130 to 1900

Thermal Properties

Latent Heat of Fusion, J/g 63
290
Melting Completion (Liquidus), °C 200
1410
Melting Onset (Solidus), °C 190
1330
Specific Heat Capacity, J/kg-K 230
410
Thermal Conductivity, W/m-K 59
9.6
Thermal Expansion, µm/m-K 22
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 17
1.8

Otherwise Unclassified Properties

Density, g/cm3 7.3
9.6
Embodied Carbon, kg CO2/kg material 14
9.8
Embodied Energy, MJ/kg 240
140
Embodied Water, L/kg 1200
450

Common Calculations

Stiffness to Weight: Axial, points 4.0
12
Stiffness to Weight: Bending, points 17
21
Strength to Weight: Axial, points 2.0
33 to 55
Strength to Weight: Bending, points 4.3
25 to 36
Thermal Diffusivity, mm2/s 35
2.5
Thermal Shock Resistance, points 3.3
31 to 52

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), % 2.8 to 3.2
0
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
46.4 to 57
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 3.0
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
1.0 to 2.0
Nickel (Ni), % 0 to 0.010
9.0 to 11
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 0.4
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 87.8 to 89.7
0
Tungsten (W), % 0
14 to 16
Zinc (Zn), % 7.5 to 8.5
0