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AWS BAg-2a vs. R30006 Cobalt

AWS BAg-2a belongs to the otherwise unclassified metals classification, while R30006 cobalt belongs to the cobalt alloys. There are 17 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is AWS BAg-2a and the bottom bar is R30006 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
220
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 31
85
Tensile Strength: Ultimate (UTS), MPa 170
900

Thermal Properties

Latent Heat of Fusion, J/g 130
320
Melting Completion (Liquidus), °C 710
1400
Melting Onset (Solidus), °C 610
1290
Specific Heat Capacity, J/kg-K 310
450
Thermal Expansion, µm/m-K 23
11

Otherwise Unclassified Properties

Density, g/cm3 8.8
8.6
Embodied Carbon, kg CO2/kg material 30
7.8
Embodied Energy, MJ/kg 470
110

Common Calculations

Stiffness to Weight: Axial, points 5.2
14
Stiffness to Weight: Bending, points 17
23
Strength to Weight: Axial, points 5.4
29
Strength to Weight: Bending, points 7.8
24
Thermal Shock Resistance, points 6.5
26

Alloy Composition

Cadmium (Cd), % 19 to 21
0
Carbon (C), % 0
0.9 to 1.4
Chromium (Cr), % 0
27 to 32
Cobalt (Co), % 0
48.6 to 68.1
Copper (Cu), % 26 to 28
0
Iron (Fe), % 0
0 to 3.0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 3.0
Silicon (Si), % 0
0 to 2.0
Silver (Ag), % 29 to 31
0
Tungsten (W), % 0
4.0 to 6.0
Zinc (Zn), % 21 to 25
0
Residuals, % 0 to 0.15
0