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AWS E2594 vs. R30016 Cobalt

AWS E2594 belongs to the iron alloys classification, while R30016 cobalt belongs to the cobalt alloys. They have a modest 31% 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 (11, in this case) are not shown.

For each property being compared, the top bar is AWS E2594 and the bottom bar is R30016 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
220
Elongation at Break, % 17
8.4
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 81
85
Tensile Strength: Ultimate (UTS), MPa 850
1010

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Melting Completion (Liquidus), °C 1440
1360
Melting Onset (Solidus), °C 1400
1270
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 14
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.0

Otherwise Unclassified Properties

Density, g/cm3 7.8
8.5
Embodied Carbon, kg CO2/kg material 4.3
7.7
Embodied Energy, MJ/kg 60
110
Embodied Water, L/kg 190
500

Common Calculations

Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 30
33
Strength to Weight: Bending, points 25
26
Thermal Diffusivity, mm2/s 4.3
3.9
Thermal Shock Resistance, points 21
24

Alloy Composition

Carbon (C), % 0 to 0.040
0.9 to 1.4
Chromium (Cr), % 24 to 27
28 to 32
Cobalt (Co), % 0
49.6 to 66.9
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 53.8 to 63.8
0 to 3.0
Manganese (Mn), % 0.5 to 2.0
0.5 to 2.0
Molybdenum (Mo), % 3.5 to 4.5
0 to 1.5
Nickel (Ni), % 8.0 to 10.5
0 to 3.0
Nitrogen (N), % 0.2 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