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EN 2.4964 Cobalt vs. ASTM B780 Alloy

EN 2.4964 cobalt belongs to the cobalt alloys classification, while ASTM B780 alloy belongs to the otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (12, 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 B780 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
83
Elongation at Break, % 40
1.1 to 9.1
Poisson's Ratio 0.29
0.36
Shear Modulus, GPa 86
30
Tensile Strength: Ultimate (UTS), MPa 960
330 to 590

Thermal Properties

Latent Heat of Fusion, J/g 290
140
Specific Heat Capacity, J/kg-K 400
270
Thermal Expansion, µm/m-K 12
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
70 to 76
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
62 to 68

Otherwise Unclassified Properties

Density, g/cm3 9.6
10

Common Calculations

Stiffness to Weight: Axial, points 13
4.5
Stiffness to Weight: Bending, points 21
14
Strength to Weight: Axial, points 28
9.1 to 16
Strength to Weight: Bending, points 23
11 to 15
Thermal Shock Resistance, points 25
16 to 29

Alloy Composition

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
23.5 to 25.7
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
0.35 to 0.65
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.4
0
Silver (Ag), % 0
74 to 76
Sulfur (S), % 0 to 0.015
0
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
0 to 0.060