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R30006 Cobalt vs. AWS BAu-5

R30006 cobalt belongs to the cobalt alloys classification, while AWS BAu-5 belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is R30006 cobalt and the bottom bar is AWS BAu-5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
140
Poisson's Ratio 0.28
0.37
Shear Modulus, GPa 85
50
Tensile Strength: Ultimate (UTS), MPa 900
210

Thermal Properties

Latent Heat of Fusion, J/g 320
180
Melting Completion (Liquidus), °C 1400
1170
Melting Onset (Solidus), °C 1290
1140
Specific Heat Capacity, J/kg-K 450
280
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Density, g/cm3 8.6
13

Common Calculations

Stiffness to Weight: Axial, points 14
5.8
Stiffness to Weight: Bending, points 23
13
Strength to Weight: Axial, points 29
4.5
Strength to Weight: Bending, points 24
6.0
Thermal Shock Resistance, points 26
9.0

Alloy Composition


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Carbon (C), % 0.9 to 1.4
0
Chromium (Cr), % 27 to 32
0
Cobalt (Co), % 48.6 to 68.1
0
Gold (Au), % 0
29.5 to 30.5
Iron (Fe), % 0 to 3.0
0
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
35.5 to 36.4
Palladium (Pd), % 0
33.5 to 34.5
Silicon (Si), % 0 to 2.0
0
Tungsten (W), % 4.0 to 6.0
0
Residuals, % 0
0 to 0.15