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AWS E309 vs. EN 2.4964 Cobalt

AWS E309 belongs to the iron alloys classification, while EN 2.4964 cobalt belongs to the cobalt alloys. They have a modest 33% 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 AWS E309 and the bottom bar is EN 2.4964 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 34
40
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 78
86
Tensile Strength: Ultimate (UTS), MPa 620
960

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Melting Completion (Liquidus), °C 1410
1630
Melting Onset (Solidus), °C 1370
1550
Specific Heat Capacity, J/kg-K 480
400
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 14
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
1.8

Otherwise Unclassified Properties

Density, g/cm3 7.8
9.6
Embodied Carbon, kg CO2/kg material 3.7
9.8
Embodied Energy, MJ/kg 52
140
Embodied Water, L/kg 180
450

Common Calculations

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

Alloy Composition

Carbon (C), % 0 to 0.15
0.050 to 0.15
Chromium (Cr), % 22 to 25
19 to 21
Cobalt (Co), % 0
46.4 to 58
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 55.8 to 65.5
0 to 3.0
Manganese (Mn), % 0.5 to 2.5
0 to 2.0
Molybdenum (Mo), % 0 to 0.75
0
Nickel (Ni), % 12 to 14
9.0 to 11
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 0
14 to 16