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EN 2.4964 Cobalt vs. ASTM B617 Coin Silver

EN 2.4964 cobalt belongs to the cobalt alloys classification, while ASTM B617 coin silver belongs to the otherwise unclassified metals. There are 18 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 EN 2.4964 cobalt and the bottom bar is ASTM B617 coin silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
75
Elongation at Break, % 40
1.1 to 22
Poisson's Ratio 0.29
0.37
Shear Modulus, GPa 86
28
Tensile Strength: Ultimate (UTS), MPa 960
290 to 520

Thermal Properties

Latent Heat of Fusion, J/g 290
120
Melting Completion (Liquidus), °C 1630
870
Melting Onset (Solidus), °C 1550
780
Specific Heat Capacity, J/kg-K 400
250
Thermal Expansion, µm/m-K 12
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
83
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
72

Otherwise Unclassified Properties

Density, g/cm3 9.6
10

Common Calculations

Stiffness to Weight: Axial, points 13
4.1
Stiffness to Weight: Bending, points 21
14
Strength to Weight: Axial, points 28
7.7 to 14
Strength to Weight: Bending, points 23
9.3 to 14
Thermal Shock Resistance, points 25
14 to 25

Alloy Composition

Aluminum (Al), % 0
0 to 0.0050
Cadmium (Cd), % 0
0 to 0.050
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 46.4 to 58
0
Copper (Cu), % 0
9.0 to 10.4
Iron (Fe), % 0 to 3.0
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 9.0 to 11
0 to 0.010
Phosphorus (P), % 0 to 0.020
0 to 0.020
Silicon (Si), % 0 to 0.4
0
Silver (Ag), % 0
89.6 to 91
Sulfur (S), % 0 to 0.015
0
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
0 to 0.060
Residuals, % 0
0 to 0.060