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R30001 Cobalt vs. SAE-AISI T2 Steel

R30001 cobalt belongs to the cobalt alloys classification, while SAE-AISI T2 steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is R30001 cobalt and the bottom bar is SAE-AISI T2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 86
79
Tensile Strength: Ultimate (UTS), MPa 620
780 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Melting Completion (Liquidus), °C 1530
1820
Melting Onset (Solidus), °C 1260
1760
Specific Heat Capacity, J/kg-K 430
410
Thermal Conductivity, W/m-K 15
19
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Density, g/cm3 9.0
9.3
Embodied Carbon, kg CO2/kg material 8.9
11
Embodied Energy, MJ/kg 130
170
Embodied Water, L/kg 460
98

Common Calculations

Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 22
21
Strength to Weight: Axial, points 19
23 to 64
Strength to Weight: Bending, points 18
20 to 40
Thermal Diffusivity, mm2/s 3.7
4.9
Thermal Shock Resistance, points 19
23 to 65

Alloy Composition

Carbon (C), % 2.0 to 3.0
0.8 to 0.9
Chromium (Cr), % 28 to 32
3.8 to 4.5
Cobalt (Co), % 43 to 59
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0 to 3.0
70.8 to 75.8
Manganese (Mn), % 0
0.2 to 0.4
Molybdenum (Mo), % 0 to 1.0
0 to 1.0
Nickel (Ni), % 0 to 3.0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 2.0
0.2 to 0.4
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 11 to 13
17.5 to 19
Vanadium (V), % 0
1.8 to 2.4