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R30003 Cobalt vs. AWS E219

R30003 cobalt belongs to the cobalt alloys classification, while AWS E219 belongs to the iron alloys. They have 44% of their average alloy composition in common. There are 22 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 R30003 cobalt and the bottom bar is AWS E219.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 10 to 73
17
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 83
78
Tensile Strength: Ultimate (UTS), MPa 970 to 1720
690

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Melting Completion (Liquidus), °C 1400
1400
Melting Onset (Solidus), °C 1440
1360
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 13
14
Thermal Expansion, µm/m-K 13
15

Otherwise Unclassified Properties

Base Metal Price, % relative 95
15
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 8.0
3.1
Embodied Energy, MJ/kg 110
44
Embodied Water, L/kg 400
160

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 32 to 57
25
Strength to Weight: Bending, points 26 to 38
23
Thermal Diffusivity, mm2/s 3.3
3.8
Thermal Shock Resistance, points 26 to 45
17

Alloy Composition

Boron (B), % 0 to 0.1
0
Carbon (C), % 0 to 0.15
0 to 0.060
Chromium (Cr), % 19 to 21
19 to 21.5
Cobalt (Co), % 39 to 41
0
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 10 to 20.5
58.6 to 67.4
Manganese (Mn), % 1.5 to 2.5
8.0 to 10
Molybdenum (Mo), % 6.0 to 8.0
0 to 0.75
Nickel (Ni), % 14 to 16
5.5 to 7.0
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 1.2
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030