High Density Nickel Chromium Aluminum (NiCrAl)


CT5146-2 is a nickel-chromium aluminum alloy coating applied using the HVOF process. The coating is very dense, very well bonded and suitable for use as a very machineable build up coating in areas where high temperature oxidation resistance is desirable. CT5146-1 works well in aerospace and land based turbine applications up to 1800° F.

Typical Properties

Nominal Composition:
Bond Strength:
In excess of 10,000 psi
Coating Porosity:
Less than 1%
Coating Hardness:
Rb 90-95
As-sprayed Surface Roughness:
200-250 Ra

For the Following Applications:

CT5146-2 is used for severe service conditions of high temperature oxidation. It is used frequently to repair hot section parts of gas turbines where machineability is a highly desirable characteristic.


Finish CT5146-2 by machining. If machining use C2 carbide tools, minimum 200 SFPM, light cuts up to .005” per pass and .0015/rev. traverse speeds. CT5146-2, if ground, tends to load the grinding wheel, so frequent dressing is required.


CT-5125-2 meets the following specifications: