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R30003 Cobalt vs. ACI-ASTM CF10SMnN Steel

R30003 cobalt belongs to the cobalt alloys classification, while ACI-ASTM CF10SMnN steel belongs to the iron alloys. They have 43% of their average alloy composition in common. There are 23 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 R30003 cobalt and the bottom bar is ACI-ASTM CF10SMnN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 10 to 73
34
Fatigue Strength, MPa 320 to 560
260
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 83
75
Tensile Strength: Ultimate (UTS), MPa 970 to 1720
660
Tensile Strength: Yield (Proof), MPa 510 to 1090
330

Thermal Properties

Latent Heat of Fusion, J/g 310
340
Melting Completion (Liquidus), °C 1400
1360
Melting Onset (Solidus), °C 1440
1310
Specific Heat Capacity, J/kg-K 450
500
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 95
15
Density, g/cm3 8.4
7.5
Embodied Carbon, kg CO2/kg material 8.0
3.1
Embodied Energy, MJ/kg 110
45
Embodied Water, L/kg 400
150

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 600 to 2790
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 32 to 57
24
Strength to Weight: Bending, points 26 to 38
22
Thermal Shock Resistance, points 26 to 45
15

Alloy Composition

Boron (B), % 0 to 0.1
0
Carbon (C), % 0 to 0.15
0 to 0.1
Chromium (Cr), % 19 to 21
16 to 18
Cobalt (Co), % 39 to 41
0
Iron (Fe), % 10 to 20.5
59.1 to 65.4
Manganese (Mn), % 1.5 to 2.5
7.0 to 9.0
Molybdenum (Mo), % 6.0 to 8.0
0
Nickel (Ni), % 14 to 16
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 0 to 0.015
0 to 0.060
Silicon (Si), % 0 to 1.2
3.5 to 4.5
Sulfur (S), % 0 to 0.015
0 to 0.030