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R30012 Cobalt vs. SAE-AISI P6 Steel

R30012 cobalt belongs to the cobalt alloys classification, while SAE-AISI P6 steel belongs to the iron alloys. There are 22 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 R30012 cobalt and the bottom bar is SAE-AISI P6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 86
73
Tensile Strength: Ultimate (UTS), MPa 830
630 to 1930

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1280
1420
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 15
43
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
9.0

Otherwise Unclassified Properties

Density, g/cm3 8.8
7.9
Embodied Carbon, kg CO2/kg material 8.3
1.8
Embodied Energy, MJ/kg 120
24
Embodied Water, L/kg 480
59

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 26
22 to 68
Strength to Weight: Bending, points 22
21 to 44
Thermal Diffusivity, mm2/s 3.8
11
Thermal Shock Resistance, points 23
21 to 63

Alloy Composition

Carbon (C), % 1.4 to 2.0
0.050 to 0.15
Chromium (Cr), % 27 to 32
1.3 to 1.8
Cobalt (Co), % 47.5 to 64.1
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0 to 3.0
92.9 to 95
Manganese (Mn), % 0
0.35 to 0.7
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
3.3 to 3.8
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 2.0
0.1 to 0.4
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 7.5 to 9.5
0