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AWS E2593 vs. R31233 Cobalt

AWS E2593 belongs to the iron alloys classification, while R31233 cobalt belongs to the cobalt alloys. They have 42% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is AWS E2593 and the bottom bar is R31233 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 17
17
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
85
Tensile Strength: Ultimate (UTS), MPa 850
1020

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Melting Completion (Liquidus), °C 1430
1350
Melting Onset (Solidus), °C 1390
1330
Specific Heat Capacity, J/kg-K 470
440
Thermal Conductivity, W/m-K 16
12
Thermal Expansion, µm/m-K 14
13

Otherwise Unclassified Properties

Density, g/cm3 7.8
8.6
Embodied Carbon, kg CO2/kg material 4.2
8.4
Embodied Energy, MJ/kg 59
110
Embodied Water, L/kg 190
480

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 30
33
Strength to Weight: Bending, points 25
26
Thermal Diffusivity, mm2/s 4.3
3.2
Thermal Shock Resistance, points 21
25

Alloy Composition

Boron (B), % 0
0 to 0.015
Carbon (C), % 0 to 0.040
0.020 to 0.1
Chromium (Cr), % 24 to 27
23.5 to 27.5
Cobalt (Co), % 0
44.7 to 63.3
Copper (Cu), % 1.5 to 3.0
0
Iron (Fe), % 52.7 to 62.5
1.0 to 5.0
Manganese (Mn), % 0.5 to 1.5
0.1 to 1.5
Molybdenum (Mo), % 2.9 to 3.9
4.0 to 6.0
Nickel (Ni), % 8.5 to 10.5
7.0 to 11
Nitrogen (N), % 0.080 to 0.25
0.030 to 0.12
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0.050 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 0
1.0 to 3.0