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EN 2.4964 Cobalt vs. AWS E318

EN 2.4964 cobalt belongs to the cobalt alloys classification, while AWS E318 belongs to the iron 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 (6, in this case) are not shown.

For each property being compared, the top bar is EN 2.4964 cobalt and the bottom bar is AWS E318.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 40
29
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 86
78
Tensile Strength: Ultimate (UTS), MPa 960
620

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Melting Completion (Liquidus), °C 1630
1440
Melting Onset (Solidus), °C 1550
1400
Specific Heat Capacity, J/kg-K 400
470
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 12
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
2.6

Otherwise Unclassified Properties

Density, g/cm3 9.6
7.9
Embodied Carbon, kg CO2/kg material 9.8
4.4
Embodied Energy, MJ/kg 140
62
Embodied Water, L/kg 450
160

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 28
22
Strength to Weight: Bending, points 23
20
Thermal Diffusivity, mm2/s 3.9
4.0
Thermal Shock Resistance, points 25
16

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.080
Chromium (Cr), % 19 to 21
17 to 20
Cobalt (Co), % 46.4 to 58
0
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 0 to 3.0
57.6 to 69.5
Manganese (Mn), % 0 to 2.0
0.5 to 2.5
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 9.0 to 11
11 to 14
Niobium (Nb), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 14 to 16
0