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Commercially Pure Silver vs. EN 2.4964 Cobalt

Commercially pure silver belongs to the otherwise unclassified metals classification, while EN 2.4964 cobalt belongs to the cobalt alloys. There are 20 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 commercially pure silver and the bottom bar is EN 2.4964 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
220
Elongation at Break, % 1.1 to 29
40
Poisson's Ratio 0.37
0.29
Shear Modulus, GPa 26
86
Tensile Strength: Ultimate (UTS), MPa 190 to 340
960

Thermal Properties

Latent Heat of Fusion, J/g 110
290
Melting Completion (Liquidus), °C 960
1630
Melting Onset (Solidus), °C 960
1550
Specific Heat Capacity, J/kg-K 240
400
Thermal Conductivity, W/m-K 420
15
Thermal Expansion, µm/m-K 20
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 100
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 87
1.8

Otherwise Unclassified Properties

Density, g/cm3 10
9.6

Common Calculations

Stiffness to Weight: Axial, points 3.8
13
Stiffness to Weight: Bending, points 13
21
Strength to Weight: Axial, points 4.9 to 8.9
28
Strength to Weight: Bending, points 6.9 to 10
23
Thermal Diffusivity, mm2/s 170
3.9
Thermal Shock Resistance, points 9.5 to 17
25

Alloy Composition

Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
46.4 to 58
Iron (Fe), % 0
0 to 3.0
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0
9.0 to 11
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 0.4
Silver (Ag), % 99.9 to 100
0
Sulfur (S), % 0
0 to 0.015
Tungsten (W), % 0
14 to 16
Residuals, % 0 to 0.1
0