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R30155 Cobalt vs. 60Pd-40Ag Alloy

R30155 cobalt belongs to the iron alloys classification, while 60Pd-40Ag alloy belongs to the otherwise unclassified metals. There are 19 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is R30155 cobalt and the bottom bar is 60Pd-40Ag alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
100
Elongation at Break, % 34
1.1 to 28
Poisson's Ratio 0.29
0.38
Shear Modulus, GPa 81
37
Shear Strength, MPa 570
220 to 350
Tensile Strength: Ultimate (UTS), MPa 850
340 to 720

Thermal Properties

Latent Heat of Fusion, J/g 300
140
Melting Completion (Liquidus), °C 1470
1360
Melting Onset (Solidus), °C 1420
1310
Specific Heat Capacity, J/kg-K 450
240
Thermal Conductivity, W/m-K 12
29
Thermal Expansion, µm/m-K 14
15

Otherwise Unclassified Properties

Density, g/cm3 8.5
11

Common Calculations

Stiffness to Weight: Axial, points 14
4.9
Stiffness to Weight: Bending, points 23
14
Strength to Weight: Axial, points 28
8.4 to 18
Strength to Weight: Bending, points 24
9.6 to 16
Thermal Diffusivity, mm2/s 3.2
11
Thermal Shock Resistance, points 21
16 to 34

Alloy Composition

Carbon (C), % 0.080 to 0.16
0
Chromium (Cr), % 20 to 22.5
0
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 24.3 to 36.2
0
Manganese (Mn), % 1.0 to 2.0
0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
0
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0 to 0.2
0
Palladium (Pd), % 0
59.5 to 60.9
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Silver (Ag), % 0
39.1 to 40.5
Sulfur (S), % 0 to 0.030
0
Tantalum (Ta), % 0.75 to 1.3
0
Tungsten (W), % 2.0 to 3.0
0
Residuals, % 0
0 to 0.3