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R31538 Cobalt vs. Solder Alloy 601

R31538 cobalt belongs to the cobalt alloys classification, while solder alloy 601 belongs to the otherwise unclassified metals. There are 21 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 R31538 cobalt and the bottom bar is solder alloy 601.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
31
Elongation at Break, % 13 to 23
83
Poisson's Ratio 0.29
0.41
Shear Modulus, GPa 86
11
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
12

Thermal Properties

Latent Heat of Fusion, J/g 320
43
Melting Completion (Liquidus), °C 1360
120
Melting Onset (Solidus), °C 1290
120
Specific Heat Capacity, J/kg-K 450
230
Thermal Conductivity, W/m-K 13
34
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
12
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
14

Otherwise Unclassified Properties

Density, g/cm3 8.4
7.3
Embodied Water, L/kg 530
1330

Common Calculations

Stiffness to Weight: Axial, points 15
2.3
Stiffness to Weight: Bending, points 24
14
Strength to Weight: Axial, points 34 to 45
0.45
Strength to Weight: Bending, points 27 to 32
1.6
Thermal Diffusivity, mm2/s 3.5
20
Thermal Shock Resistance, points 25 to 33
1.2

Alloy Composition

Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
0 to 0.1
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.1
Cadmium (Cd), % 0
0 to 0.0020
Carbon (C), % 0.15 to 0.35
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 58.7 to 68.9
0
Copper (Cu), % 0
0 to 0.050
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
51 to 52.5
Iron (Fe), % 0 to 0.75
0 to 0.020
Lead (Pb), % 0
0 to 0.070
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0 to 0.010
Nitrogen (N), % 0 to 0.25
0
Silicon (Si), % 0 to 1.0
0
Silver (Ag), % 0
0 to 0.1
Tin (Sn), % 0
47.5 to 48.5
Zinc (Zn), % 0
0 to 0.0010