CMSX-4®

Single Crystal Alloy

Contents:

Product Summary
Applications
Alloy Features
Figures
Information request Form

Product Summary

Gas turbine engine designers seek improved fuel efficiency' power to weight performance, improved hot section durability and lower life cycle costs. To achieve the improved performance and efficiencies, designers tend to utilize increasingly capable single crystal alloys. In particular, many employ CMSX-4®.

CMSX-4 is an ultra high strength, single crystal alloy development of the Cannon Muskegon Corporation. This second generation rhenium-containing, nickel-base single crystal alloy is capable of higher peak temperature/stress operation of at least 2125°F (1163°C). Large tonnages of CMSX-4 have been produced. Solar® Turbines  report blade lives to overhaul of 25,000 - 30,000 hrs. in their 15,000 hp Mars 100 industrial gas turbine. Significant world wide are and industrial gas turbine airfoil application experience support the CMSX-4 alloy features noted below.

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Applications

CMSX®-4 super alloy from Cannon Muskegon is in use by Solar® Turbines   for their new 4.2 MW Mars 100 industrial gas turbine engine. Click here to read the story.

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Alloy Features

Density 0.314 lb./in3 (8.70 kg/dm3).
Good single crystal castability with moderate to high thermal gradient, industrial casting processes - similar to CMSX-2® and CMSX-3® production experience.
Solution heat treatment "window of approximately 19°C (35°F) - capable of full ý and eutectuc y and y-ý solutioning without incipient melting.

 

 
Specific (density corrected) stress-rupture advantage of 35°C (63°F) over CMSX-2/3 alloys.
Stress - 1% creep advantage of 62°C  (111°F) over DS  CM 247LC®.
Oxidation resistance (both bare & coated) at least as good as CMSX-2 and CMSX-3 alloys. Improved hot corrosion resistance.
Excellent phasial stability and tolerant of rare earth elemental ppm residual additions of lanthanun and yttrium for enhanced bare oxidation resistance and thermal barrier coating adherence.

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Information Request Form

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Copyright © 1999 The C-M Group. Specialty Materials and Alloys Group of SPS Technologies, Inc. All rights reserved.
Information in this document is subject to change without notice. Other products and companies referred to herein are trademarks or registered trademarks of their respective companies or mark holders.  CMSX-4®, CMSX-2®, CMSX-3® CM 247LC® alloys are registered trademarks of Cannon-Muskegon Corporation.