MakeItFrom.com
Menu (ESC)

R30003 Cobalt vs. ACI-ASTM CK3MCuN Steel

R30003 cobalt belongs to the cobalt alloys classification, while ACI-ASTM CK3MCuN steel belongs to the iron alloys. They have 58% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is R30003 cobalt and the bottom bar is ACI-ASTM CK3MCuN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 10 to 73
39
Fatigue Strength, MPa 320 to 560
250
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 83
80
Tensile Strength: Ultimate (UTS), MPa 970 to 1720
620
Tensile Strength: Yield (Proof), MPa 510 to 1090
290

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1440
1350
Specific Heat Capacity, J/kg-K 450
460
Thermal Conductivity, W/m-K 13
12
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 95
29
Density, g/cm3 8.4
8.0
Embodied Carbon, kg CO2/kg material 8.0
5.6
Embodied Energy, MJ/kg 110
76
Embodied Water, L/kg 400
190

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 600 to 2790
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 32 to 57
21
Strength to Weight: Bending, points 26 to 38
20
Thermal Diffusivity, mm2/s 3.3
3.2
Thermal Shock Resistance, points 26 to 45
14

Alloy Composition

Boron (B), % 0 to 0.1
0
Carbon (C), % 0 to 0.15
0 to 0.025
Chromium (Cr), % 19 to 21
19.5 to 20.5
Cobalt (Co), % 39 to 41
0
Copper (Cu), % 0
0.5 to 1.0
Iron (Fe), % 10 to 20.5
49.5 to 56.3
Manganese (Mn), % 1.5 to 2.5
0 to 1.2
Molybdenum (Mo), % 6.0 to 8.0
6.0 to 7.0
Nickel (Ni), % 14 to 16
17.5 to 19.5
Nitrogen (N), % 0
0.18 to 0.24
Phosphorus (P), % 0 to 0.015
0 to 0.045
Silicon (Si), % 0 to 1.2
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.010