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R31539 Cobalt vs. ASTM F15 Fe-Ni-Co

R31539 cobalt belongs to the cobalt alloys classification, while ASTM F15 Fe-Ni-Co belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is R31539 cobalt and the bottom bar is ASTM F15 Fe-Ni-Co.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 86
73
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
520 to 880

Thermal Properties

Latent Heat of Fusion, J/g 320
270
Melting Completion (Liquidus), °C 1360
1410
Melting Onset (Solidus), °C 1290
1450
Specific Heat Capacity, J/kg-K 450
460
Thermal Conductivity, W/m-K 13
17
Thermal Expansion, µm/m-K 13
6.0

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
4.0

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.3
Embodied Carbon, kg CO2/kg material 8.2
5.2
Embodied Energy, MJ/kg 110
71
Embodied Water, L/kg 530
190

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 33 to 44
17 to 29
Strength to Weight: Bending, points 27 to 32
17 to 24
Thermal Diffusivity, mm2/s 3.5
4.5
Thermal Shock Resistance, points 24 to 32
32 to 55

Alloy Composition

Aluminum (Al), % 0.3 to 1.0
0 to 0.1
Carbon (C), % 0 to 0.14
0 to 0.040
Chromium (Cr), % 26 to 30
0 to 0.2
Cobalt (Co), % 57.7 to 68.7
16 to 18
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 0 to 0.75
50.3 to 56
Lanthanum (La), % 0.030 to 0.2
0
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0 to 1.0
0 to 0.5
Molybdenum (Mo), % 5.0 to 7.0
0 to 0.2
Nickel (Ni), % 0 to 1.0
28 to 30
Nitrogen (N), % 0 to 0.25
0
Silicon (Si), % 0 to 1.0
0 to 0.2
Titanium (Ti), % 0
0 to 0.1
Zirconium (Zr), % 0
0 to 0.1

Comparable Variants