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R30155 Cobalt vs. ASTM F15 Fe-Ni-Co

Both R30155 cobalt and ASTM F15 Fe-Ni-Co are iron alloys. They have 68% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is R30155 cobalt and the bottom bar is ASTM F15 Fe-Ni-Co.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 81
73
Tensile Strength: Ultimate (UTS), MPa 850
520 to 880

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Melting Completion (Liquidus), °C 1470
1410
Melting Onset (Solidus), °C 1420
1450
Specific Heat Capacity, J/kg-K 450
460
Thermal Conductivity, W/m-K 12
17
Thermal Expansion, µm/m-K 14
6.0

Otherwise Unclassified Properties

Base Metal Price, % relative 80
49
Density, g/cm3 8.5
8.3
Embodied Carbon, kg CO2/kg material 9.7
5.2
Embodied Energy, MJ/kg 150
71
Embodied Water, L/kg 300
190

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 28
17 to 29
Strength to Weight: Bending, points 24
17 to 24
Thermal Diffusivity, mm2/s 3.2
4.5
Thermal Shock Resistance, points 21
32 to 55

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Carbon (C), % 0.080 to 0.16
0 to 0.040
Chromium (Cr), % 20 to 22.5
0 to 0.2
Cobalt (Co), % 18.5 to 21
16 to 18
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 24.3 to 36.2
50.3 to 56
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 1.0 to 2.0
0 to 0.5
Molybdenum (Mo), % 2.5 to 3.5
0 to 0.2
Nickel (Ni), % 19 to 21
28 to 30
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0 to 0.2
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.2
Sulfur (S), % 0 to 0.030
0
Tantalum (Ta), % 0.75 to 1.3
0
Titanium (Ti), % 0
0 to 0.1
Tungsten (W), % 2.0 to 3.0
0
Zirconium (Zr), % 0
0 to 0.1