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R31539 Cobalt vs. AWS BAu-1

R31539 cobalt belongs to the cobalt alloys classification, while AWS BAu-1 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 R31539 cobalt and the bottom bar is AWS BAu-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Poisson's Ratio 0.29
0.37
Shear Modulus, GPa 86
40
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
210

Thermal Properties

Latent Heat of Fusion, J/g 320
150
Melting Completion (Liquidus), °C 1360
1020
Melting Onset (Solidus), °C 1290
990
Specific Heat Capacity, J/kg-K 450
290
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Density, g/cm3 8.4
13

Common Calculations

Stiffness to Weight: Axial, points 15
4.7
Stiffness to Weight: Bending, points 24
12
Strength to Weight: Axial, points 33 to 44
4.5
Strength to Weight: Bending, points 27 to 32
6.1
Thermal Shock Resistance, points 24 to 32
8.5

Alloy Composition

Aluminum (Al), % 0.3 to 1.0
0
Carbon (C), % 0 to 0.14
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 57.7 to 68.7
0
Copper (Cu), % 0
61.9 to 63
Gold (Au), % 0
37 to 38
Iron (Fe), % 0 to 0.75
0
Lanthanum (La), % 0.030 to 0.2
0
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0
Nitrogen (N), % 0 to 0.25
0
Silicon (Si), % 0 to 1.0
0
Residuals, % 0
0 to 0.15