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Commercially Pure Silver vs. R30035 Cobalt

Commercially pure silver belongs to the otherwise unclassified metals classification, while R30035 cobalt belongs to the cobalt alloys. There are 20 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is commercially pure silver and the bottom bar is R30035 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
220 to 230
Elongation at Break, % 1.1 to 29
9.0 to 46
Poisson's Ratio 0.37
0.29
Shear Modulus, GPa 26
84 to 89
Tensile Strength: Ultimate (UTS), MPa 190 to 340
900 to 1900

Thermal Properties

Latent Heat of Fusion, J/g 110
320
Melting Completion (Liquidus), °C 960
1440
Melting Onset (Solidus), °C 960
1320
Specific Heat Capacity, J/kg-K 240
440
Thermal Conductivity, W/m-K 420
11
Thermal Expansion, µm/m-K 20
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 100
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 87
1.8

Otherwise Unclassified Properties

Density, g/cm3 10
8.7

Common Calculations

Stiffness to Weight: Axial, points 3.8
14 to 15
Stiffness to Weight: Bending, points 13
23 to 24
Strength to Weight: Axial, points 4.9 to 8.9
29 to 61
Strength to Weight: Bending, points 6.9 to 10
24 to 39
Thermal Diffusivity, mm2/s 170
3.0
Thermal Shock Resistance, points 9.5 to 17
23 to 46

Alloy Composition

Boron (B), % 0
0 to 0.015
Carbon (C), % 0
0 to 0.025
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
29.1 to 39
Iron (Fe), % 0
0 to 1.0
Manganese (Mn), % 0
0 to 0.15
Molybdenum (Mo), % 0
9.0 to 10.5
Nickel (Ni), % 0
33 to 37
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0
0 to 0.15
Silver (Ag), % 99.9 to 100
0
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0
0 to 1.0
Residuals, % 0 to 0.1
0

Comparable Variants