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85-silver 15-nickel vs. R30605 Cobalt

85-silver 15-nickel belongs to the otherwise unclassified metals classification, while R30605 cobalt belongs to the cobalt alloys. There are 17 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is 85-silver 15-nickel and the bottom bar is R30605 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 88
210
Poisson's Ratio 0.36
0.29
Shear Modulus, GPa 32
81
Tensile Strength: Ultimate (UTS), MPa 260 to 470
1130 to 1900

Thermal Properties

Latent Heat of Fusion, J/g 140
290
Melting Completion (Liquidus), °C 870
1410
Melting Onset (Solidus), °C 960
1330
Specific Heat Capacity, J/kg-K 270
410
Thermal Expansion, µm/m-K 18
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 86
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 75
1.8

Otherwise Unclassified Properties

Density, g/cm3 10
9.6

Common Calculations

Stiffness to Weight: Axial, points 4.8
12
Stiffness to Weight: Bending, points 14
21
Strength to Weight: Axial, points 7.1 to 13
33 to 55
Strength to Weight: Bending, points 8.9 to 13
25 to 36
Thermal Shock Resistance, points 12 to 21
31 to 52

Alloy Composition

Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
46.4 to 57
Iron (Fe), % 0
0 to 3.0
Manganese (Mn), % 0
1.0 to 2.0
Nickel (Ni), % 13.8 to 16
9.0 to 11
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 0.4
Silver (Ag), % 84 to 86
0
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
14 to 16
Residuals, % 0 to 0.2
0

Comparable Variants