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G-CoCr28 Cobalt vs. N08366 Stainless Steel

G-CoCr28 cobalt belongs to the cobalt alloys classification, while N08366 stainless steel belongs to the iron alloys. They have 42% of their average alloy composition in common. There are 27 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 G-CoCr28 cobalt and the bottom bar is N08366 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
210
Elongation at Break, % 6.7
34
Fatigue Strength, MPa 130
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 83
80
Tensile Strength: Ultimate (UTS), MPa 560
590
Tensile Strength: Yield (Proof), MPa 260
240

Thermal Properties

Latent Heat of Fusion, J/g 320
310
Maximum Temperature: Mechanical, °C 1200
1100
Melting Completion (Liquidus), °C 1330
1460
Melting Onset (Solidus), °C 1270
1410
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 8.5
13
Thermal Expansion, µm/m-K 14
16

Otherwise Unclassified Properties

Base Metal Price, % relative 100
33
Density, g/cm3 8.1
8.1
Embodied Carbon, kg CO2/kg material 6.2
6.2
Embodied Energy, MJ/kg 84
84
Embodied Water, L/kg 440
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
160
Resilience: Unit (Modulus of Resilience), kJ/m3 160
150
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19
20
Strength to Weight: Bending, points 19
19
Thermal Diffusivity, mm2/s 2.2
3.4
Thermal Shock Resistance, points 14
13

Alloy Composition

Carbon (C), % 0.050 to 0.25
0 to 0.035
Chromium (Cr), % 27 to 30
20 to 22
Cobalt (Co), % 48 to 52
0
Iron (Fe), % 9.7 to 24.5
42.4 to 50.5
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
6.0 to 7.0
Nickel (Ni), % 0 to 4.0
23.5 to 25.5
Niobium (Nb), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0.5 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030