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R30021 Cobalt vs. AWS BVAg-32

R30021 cobalt belongs to the cobalt alloys classification, while AWS BVAg-32 belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is R30021 cobalt and the bottom bar is AWS BVAg-32.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
93
Poisson's Ratio 0.29
0.37
Shear Modulus, GPa 86
34
Tensile Strength: Ultimate (UTS), MPa 700
180

Thermal Properties

Latent Heat of Fusion, J/g 330
140
Melting Completion (Liquidus), °C 1350
950
Melting Onset (Solidus), °C 1190
900
Specific Heat Capacity, J/kg-K 450
270
Thermal Expansion, µm/m-K 11
17

Otherwise Unclassified Properties

Density, g/cm3 8.4
11

Common Calculations

Stiffness to Weight: Axial, points 15
4.9
Stiffness to Weight: Bending, points 24
14
Strength to Weight: Axial, points 23
4.7
Strength to Weight: Bending, points 21
6.7
Thermal Shock Resistance, points 21
8.0

Alloy Composition

Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0.2 to 0.35
0 to 0.0050
Chromium (Cr), % 26 to 29
0
Cobalt (Co), % 61.7 to 67.3
0
Copper (Cu), % 0
20 to 22
Iron (Fe), % 0 to 3.0
0
Lead (Pb), % 0
0 to 0.0020
Molybdenum (Mo), % 4.5 to 6.0
0
Nickel (Ni), % 2.0 to 3.0
0
Palladium (Pd), % 0
23 to 27
Phosphorus (P), % 0
0 to 0.0020
Silicon (Si), % 0 to 1.5
0
Silver (Ag), % 0
53 to 55
Zinc (Zn), % 0
0 to 0.0010