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AWS BAg-35 vs. R31538 Cobalt

AWS BAg-35 belongs to the otherwise unclassified metals classification, while R31538 cobalt belongs to the cobalt alloys. There are 17 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is AWS BAg-35 and the bottom bar is R31538 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 91
220
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 34
86
Tensile Strength: Ultimate (UTS), MPa 170
1020 to 1360

Thermal Properties

Latent Heat of Fusion, J/g 140
320
Melting Completion (Liquidus), °C 750
1360
Melting Onset (Solidus), °C 690
1290
Specific Heat Capacity, J/kg-K 330
450
Thermal Expansion, µm/m-K 21
13

Otherwise Unclassified Properties

Density, g/cm3 8.7
8.4
Embodied Carbon, kg CO2/kg material 35
8.1
Embodied Energy, MJ/kg 550
110

Common Calculations

Stiffness to Weight: Axial, points 5.8
15
Stiffness to Weight: Bending, points 17
24
Strength to Weight: Axial, points 5.4
34 to 45
Strength to Weight: Bending, points 7.8
27 to 32
Thermal Shock Resistance, points 6.4
25 to 33

Alloy Composition


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Carbon (C), % 0
0.15 to 0.35
Chromium (Cr), % 0
26 to 30
Cobalt (Co), % 0
58.7 to 68.9
Copper (Cu), % 31 to 33
0
Iron (Fe), % 0
0 to 0.75
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), % 34 to 36
0
Zinc (Zn), % 31 to 35
0
Residuals, % 0 to 0.15
0