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R30003 Cobalt vs. 85-silver 15-nickel

R30003 cobalt belongs to the cobalt alloys classification, while 85-silver 15-nickel belongs to the otherwise unclassified metals. There are 17 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 R30003 cobalt and the bottom bar is 85-silver 15-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
88
Poisson's Ratio 0.29
0.36
Shear Modulus, GPa 83
32
Tensile Strength: Ultimate (UTS), MPa 970 to 1720
260 to 470

Thermal Properties

Latent Heat of Fusion, J/g 310
140
Melting Completion (Liquidus), °C 1400
870
Melting Onset (Solidus), °C 1440
960
Specific Heat Capacity, J/kg-K 450
270
Thermal Expansion, µm/m-K 13
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
86
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
75

Otherwise Unclassified Properties

Density, g/cm3 8.4
10

Common Calculations

Stiffness to Weight: Axial, points 14
4.8
Stiffness to Weight: Bending, points 24
14
Strength to Weight: Axial, points 32 to 57
7.1 to 13
Strength to Weight: Bending, points 26 to 38
8.9 to 13
Thermal Shock Resistance, points 26 to 45
12 to 21

Alloy Composition

Boron (B), % 0 to 0.1
0
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 39 to 41
0
Iron (Fe), % 10 to 20.5
0
Manganese (Mn), % 1.5 to 2.5
0
Molybdenum (Mo), % 6.0 to 8.0
0
Nickel (Ni), % 14 to 16
13.8 to 16
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 1.2
0
Silver (Ag), % 0
84 to 86
Sulfur (S), % 0 to 0.015
0
Residuals, % 0
0 to 0.2

Comparable Variants