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G-CoCr28 Cobalt vs. Grade TDC Steel

G-CoCr28 cobalt belongs to the cobalt alloys classification, while grade TDC steel belongs to the iron alloys. There are 22 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 G-CoCr28 cobalt and the bottom bar is grade TDC steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 83
80
Tensile Strength: Ultimate (UTS), MPa 560
1700

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Maximum Temperature: Mechanical, °C 1200
400
Melting Completion (Liquidus), °C 1330
1450
Melting Onset (Solidus), °C 1270
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 8.5
51
Thermal Expansion, µm/m-K 14
13

Otherwise Unclassified Properties

Base Metal Price, % relative 100
1.9
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 6.2
1.4
Embodied Energy, MJ/kg 84
19
Embodied Water, L/kg 440
47

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19
60
Strength to Weight: Bending, points 19
40
Thermal Diffusivity, mm2/s 2.2
14
Thermal Shock Resistance, points 14
50

Alloy Composition

Carbon (C), % 0.050 to 0.25
0.6 to 0.75
Chromium (Cr), % 27 to 30
0 to 0.3
Cobalt (Co), % 48 to 52
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 9.7 to 24.5
98 to 99.4
Manganese (Mn), % 0 to 1.5
0.5 to 1.2
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 4.0
0
Niobium (Nb), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0.5 to 1.5
0.1 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.020