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R30605 Cobalt vs. Grade TDSiCr Steel

R30605 cobalt belongs to the cobalt alloys classification, while grade TDSiCr steel belongs to the iron alloys. There are 22 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 R30605 cobalt and the bottom bar is grade TDSiCr steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
80
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
1950

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Melting Completion (Liquidus), °C 1410
1440
Melting Onset (Solidus), °C 1330
1400
Specific Heat Capacity, J/kg-K 410
480
Thermal Conductivity, W/m-K 9.6
46
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
8.5

Otherwise Unclassified Properties

Density, g/cm3 9.6
7.7
Embodied Carbon, kg CO2/kg material 9.8
1.5
Embodied Energy, MJ/kg 140
20
Embodied Water, L/kg 450
48

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 33 to 55
70
Strength to Weight: Bending, points 25 to 36
45
Thermal Diffusivity, mm2/s 2.5
12
Thermal Shock Resistance, points 31 to 52
58

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.5 to 0.6
Chromium (Cr), % 19 to 21
0.5 to 0.8
Cobalt (Co), % 46.4 to 57
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 0 to 3.0
96.6 to 97.8
Manganese (Mn), % 1.0 to 2.0
0.5 to 0.9
Nickel (Ni), % 9.0 to 11
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 0.4
1.2 to 1.6
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 14 to 16
0