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AWS BAg-19 vs. R31538 Cobalt

AWS BAg-19 belongs to the otherwise unclassified metals classification, while R31538 cobalt belongs to the cobalt alloys. 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 AWS BAg-19 and the bottom bar is R31538 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 74
220
Poisson's Ratio 0.37
0.29
Shear Modulus, GPa 27
86
Tensile Strength: Ultimate (UTS), MPa 140
1020 to 1360

Thermal Properties

Latent Heat of Fusion, J/g 120
320
Melting Completion (Liquidus), °C 890
1360
Melting Onset (Solidus), °C 760
1290
Specific Heat Capacity, J/kg-K 250
450
Thermal Expansion, µm/m-K 20
13

Otherwise Unclassified Properties

Density, g/cm3 10
8.4

Common Calculations

Stiffness to Weight: Axial, points 4.0
15
Stiffness to Weight: Bending, points 14
24
Strength to Weight: Axial, points 3.8
34 to 45
Strength to Weight: Bending, points 5.8
27 to 32
Thermal Shock Resistance, points 6.9
25 to 33

Alloy Composition

Carbon (C), % 0
0.15 to 0.35
Chromium (Cr), % 0
26 to 30
Cobalt (Co), % 0
58.7 to 68.9
Copper (Cu), % 6.6 to 7.9
0
Iron (Fe), % 0
0 to 0.75
Lithium (Li), % 0.15 to 0.3
0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 0
0 to 1.0
Nitrogen (N), % 0
0 to 0.25
Silicon (Si), % 0
0 to 1.0
Silver (Ag), % 92 to 93
0
Residuals, % 0 to 0.15
0