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R30605 Cobalt vs. AWS E383

R30605 cobalt belongs to the cobalt alloys classification, while AWS E383 belongs to the iron alloys. They have a modest 33% of their average alloy composition in common, which, by itself, doesn't mean much. There are 21 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is R30605 cobalt and the bottom bar is AWS E383.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
210
Elongation at Break, % 34
34
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
80
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
580

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Melting Completion (Liquidus), °C 1410
1420
Melting Onset (Solidus), °C 1330
1370
Specific Heat Capacity, J/kg-K 410
470
Thermal Conductivity, W/m-K 9.6
12
Thermal Expansion, µm/m-K 12
14

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.1
Embodied Carbon, kg CO2/kg material 9.8
6.4
Embodied Energy, MJ/kg 140
89
Embodied Water, L/kg 450
240

Common Calculations

Stiffness to Weight: Axial, points 12
14
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
3.1
Thermal Shock Resistance, points 31 to 52
15

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.030
Chromium (Cr), % 19 to 21
26.5 to 29
Cobalt (Co), % 46.4 to 57
0
Copper (Cu), % 0
0.6 to 1.5
Iron (Fe), % 0 to 3.0
28.8 to 39.2
Manganese (Mn), % 1.0 to 2.0
0.5 to 2.5
Molybdenum (Mo), % 0
3.2 to 4.2
Nickel (Ni), % 9.0 to 11
30 to 33
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 0.4
0 to 0.9
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 14 to 16
0