Cobalt Molybdenum Chromium Superalloy (T800)

CT5200-2

CT5200-2 is a Cobalt Molybdenum Chromium superalloy which provides excellent wear resistance, corrosion resistance, high temperature resistance and oxidation resistance up to 1400° F. CT5200-2 is applied using the HVOF process to achieve very dense coatings that contain hard laves phases. These hard laves phases provide wear resistance without the excessive wear on mating components that is often associated with tungsten carbide or chromium carbide type wear resistant coatings. CT5200-2 is often used where lubrication is low or nonexistent. This coating wears very well against itself and against stainless steel, aluminum and other superalloys. CT5200-2 may be heat treated for improved wear resistance and improved density for critical corrosion applications. CT5200-2 may be used in oxidizing or reducing atmospheres and in non-oxidizing environments.

Typical Properties

Nominal Composition Cobalt:
62% Co – 28% Mo – 8% Cr – 2% Si
Bond Strength:
8,500-9,500 psi
Coating Porosity:
Less than 2%
Coating Hardness:
DPH300 500-550
As-sprayed Surface Roughness:
200-350 RMS

For the Following Applications:

CT5200-2 is widely used in aerospace and industrial applications where a combination of high temperature resistance and wear resistance are desired. It is an excellent material for use in one side of a bearing match – wearing well against most metals used in hot oxidation or hot corrosion applications. It is also frequently used in ambient temperature applications where superior wear resistance is required and where galling needs to be overcome.

Finishing

CT5200-2 may be finished by wet grinding with silicon carbide wheels. The coating may also be lapped or superfinished. Finishes of 2 Ra have been achieved on a routine basis.

Specifications

CT5200-2 meets the following specifications: