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AWS BAg-37 vs. R30155 Cobalt

AWS BAg-37 belongs to the otherwise unclassified metals classification, while R30155 cobalt belongs to the iron alloys. There are 17 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 AWS BAg-37 and the bottom bar is R30155 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 94
210
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 36
81
Tensile Strength: Ultimate (UTS), MPa 180
850

Thermal Properties

Latent Heat of Fusion, J/g 150
300
Melting Completion (Liquidus), °C 780
1470
Melting Onset (Solidus), °C 690
1420
Specific Heat Capacity, J/kg-K 350
450
Thermal Expansion, µm/m-K 21
14

Otherwise Unclassified Properties

Density, g/cm3 8.5
8.5
Embodied Carbon, kg CO2/kg material 26
9.7
Embodied Energy, MJ/kg 410
150

Common Calculations

Stiffness to Weight: Axial, points 6.1
14
Stiffness to Weight: Bending, points 18
23
Strength to Weight: Axial, points 5.9
28
Strength to Weight: Bending, points 8.3
24
Thermal Shock Resistance, points 6.6
21

Alloy Composition

Carbon (C), % 0
0.080 to 0.16
Chromium (Cr), % 0
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Copper (Cu), % 39 to 41
0
Iron (Fe), % 0
24.3 to 36.2
Manganese (Mn), % 0
1.0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Silver (Ag), % 24 to 26
0
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 0
0.75 to 1.3
Tin (Sn), % 1.5 to 2.5
0
Tungsten (W), % 0
2.0 to 3.0
Zinc (Zn), % 31 to 35
0
Residuals, % 0 to 0.15
0