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Commercially Pure Palladium vs. R31539 Cobalt

Commercially pure palladium belongs to the otherwise unclassified metals classification, while R31539 cobalt belongs to the cobalt alloys. There are 18 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is commercially pure palladium and the bottom bar is R31539 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
220
Elongation at Break, % 1.1 to 11
13 to 22
Poisson's Ratio 0.39
0.29
Shear Modulus, GPa 43
86
Tensile Strength: Ultimate (UTS), MPa 200 to 380
1000 to 1340

Thermal Properties

Latent Heat of Fusion, J/g 160
320
Melting Completion (Liquidus), °C 1550
1360
Melting Onset (Solidus), °C 1550
1290
Specific Heat Capacity, J/kg-K 240
450
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 16
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 12
2.1

Otherwise Unclassified Properties

Density, g/cm3 12
8.4

Common Calculations

Stiffness to Weight: Axial, points 5.6
15
Stiffness to Weight: Bending, points 14
24
Strength to Weight: Axial, points 4.5 to 8.8
33 to 44
Strength to Weight: Bending, points 6.2 to 9.7
27 to 32
Thermal Shock Resistance, points 9.8 to 19
24 to 32

Alloy Composition

Aluminum (Al), % 0
0.3 to 1.0
Carbon (C), % 0
0 to 0.14
Chromium (Cr), % 0
26 to 30
Cobalt (Co), % 0
57.7 to 68.7
Iron (Fe), % 0
0 to 0.75
Lanthanum (La), % 0
0.030 to 0.2
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 0
0 to 1.0
Nitrogen (N), % 0
0 to 0.25
Palladium (Pd), % 99.8 to 100
0
Silicon (Si), % 0
0 to 1.0
Residuals, % 0 to 0.2
0

Comparable Variants