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R30605 Cobalt vs. AWS E330

R30605 cobalt belongs to the cobalt alloys classification, while AWS E330 belongs to the iron alloys. They have a modest 29% of their average alloy composition in common, which, by itself, doesn't mean much. There are 23 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is R30605 cobalt and the bottom bar is AWS E330.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 34
29
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
76
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
580

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Melting Completion (Liquidus), °C 1410
1400
Melting Onset (Solidus), °C 1330
1350
Specific Heat Capacity, J/kg-K 410
470
Thermal Conductivity, W/m-K 9.6
12
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
1.9

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.1
Embodied Carbon, kg CO2/kg material 9.8
5.4
Embodied Energy, MJ/kg 140
75
Embodied Water, L/kg 450
180

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 33 to 55
20
Strength to Weight: Bending, points 25 to 36
19
Thermal Diffusivity, mm2/s 2.5
3.2
Thermal Shock Resistance, points 31 to 52
16

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.18 to 0.25
Chromium (Cr), % 19 to 21
14 to 17
Cobalt (Co), % 46.4 to 57
0
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 0 to 3.0
40.7 to 51.8
Manganese (Mn), % 1.0 to 2.0
1.0 to 2.5
Molybdenum (Mo), % 0
0 to 0.75
Nickel (Ni), % 9.0 to 11
33 to 37
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 14 to 16
0