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R30605 Cobalt vs. ASTM B628 Ag-Cu

R30605 cobalt belongs to the cobalt alloys classification, while ASTM B628 Ag-Cu belongs to the otherwise unclassified metals. There are 18 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 R30605 cobalt and the bottom bar is ASTM B628 Ag-Cu.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
83
Elongation at Break, % 34
1.1 to 17
Poisson's Ratio 0.29
0.36
Shear Modulus, GPa 81
31
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
350 to 760

Thermal Properties

Latent Heat of Fusion, J/g 290
140
Melting Completion (Liquidus), °C 1410
780
Melting Onset (Solidus), °C 1330
780
Specific Heat Capacity, J/kg-K 410
280
Thermal Expansion, µm/m-K 12
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
84
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
75

Otherwise Unclassified Properties

Density, g/cm3 9.6
10

Common Calculations

Stiffness to Weight: Axial, points 12
4.6
Stiffness to Weight: Bending, points 21
14
Strength to Weight: Axial, points 33 to 55
9.5 to 21
Strength to Weight: Bending, points 25 to 36
11 to 18
Thermal Shock Resistance, points 31 to 52
16 to 34

Alloy Composition


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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 57
0
Copper (Cu), % 0
26.6 to 29
Iron (Fe), % 0 to 3.0
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Manganese (Mn), % 1.0 to 2.0
0
Nickel (Ni), % 9.0 to 11
0 to 0.010
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.4
0
Silver (Ag), % 0
71 to 73
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
0 to 0.060
Residuals, % 0
0 to 0.21

Comparable Variants