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AWS E209 vs. R30016 Cobalt

AWS E209 belongs to the iron alloys classification, while R30016 cobalt belongs to the cobalt alloys. They have a modest 28% of their average alloy composition in common, which, by itself, doesn't mean much. There are 19 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is AWS E209 and the bottom bar is R30016 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 17
8.4
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
85
Tensile Strength: Ultimate (UTS), MPa 770
1010

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Melting Completion (Liquidus), °C 1420
1360
Melting Onset (Solidus), °C 1370
1270
Specific Heat Capacity, J/kg-K 480
450
Thermal Expansion, µm/m-K 14
14

Otherwise Unclassified Properties

Density, g/cm3 7.8
8.5
Embodied Carbon, kg CO2/kg material 4.4
7.7
Embodied Energy, MJ/kg 63
110
Embodied Water, L/kg 180
500

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 28
33
Strength to Weight: Bending, points 24
26
Thermal Shock Resistance, points 19
24

Alloy Composition

Carbon (C), % 0 to 0.060
0.9 to 1.4
Chromium (Cr), % 20.5 to 24
28 to 32
Cobalt (Co), % 0
49.6 to 66.9
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 51.5 to 64.3
0 to 3.0
Manganese (Mn), % 4.0 to 7.0
0.5 to 2.0
Molybdenum (Mo), % 1.5 to 3.0
0 to 1.5
Nickel (Ni), % 9.5 to 12
0 to 3.0
Nitrogen (N), % 0.1 to 0.3
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0.2 to 2.0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 0
3.5 to 5.5
Vanadium (V), % 0.1 to 0.3
0