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  CMSX -2/3
For improved turbine efficiency.

 


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CMSX Single Crystal Alloys

CMSX -2/3
CMSX-4
CMSX -10
CM 186 LC
CM-247 LC
CMSX-486

Product Information Sheet Contents:

bullet 
Product Summary
bullet 
Engineering Characteristics
bullet 
Applications
bullet 
Alloy Features
bullet 
Information Request Form

Product Summary

Single crystal turbine blade and vane airfoils have extensively replace equiaxed and DS components in turbine engines. This activity is stimulated by the increased temperature/stress capability and superior thermal and cyclic fatigue properties typically achieved with single crystal components. Single crystal airfoils help achieve improved turbine efficiency and performance without sacrificing durability and can lower life cycle costs.

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Engineering Characteristics

CMSX-2® is a single crystal alloy development of the Cannon Muskegon Corporation which achieves an attractive balance of necessary properties. It was the first single crystal alloy developed to have a combination of good single crystal castability, a wide solution heat treatment "window, " phase stability and excellent oxidation properties. CMSX-3® alloy originally developed for Garrett, is CMSX-2 alloy with a 0.1% Hf addition. Both alloys have essentially the same properties, however a slightly lower solution temperature for CMSX-3 alloy is employed.

CMSX-2 and CMSX-3 alloys are production status materials. Many 800 lb. (3630 kg) V-3 furnace heats have been melted to date and 15 years of experience with CMSX-2 and CMSX-3 alloys -- vis-á-vis, alloy melting, single crystal casting [fifteen (15) different casting processes/sources used], solution heat treatment, mechanical and environmental property response and turbine engine experience -- support the following alloy listed below.

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Applications

Numerous very successful turbine applications for CMSX-2 and CMSX-3 are in effect worldwide.

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Alloy Features

bulletDensity 0.309 lb./ cu in. (8.56 kg/dm3).
bulletGood single crystal castability when cast with moderate to high thermal gradient industrial processes.
bulletWide solution heat treatment "window" of 49°F (27°C).
bulletSuperior resistence to recrystalization on solution treatment.
bullet45°F (25°C) to 905°F (50°C) creep capability improvement over the widely used DS MAR M 200 Hf alloy.
 
bulletExcellent phasial stability.
bulletExcellent bare coated oxidation resistance (see graph).
bulletHot corrosion resistance (uncoated, bare) very much closer to IN 792 than IN 100 equiaxed.
bulletNumerous fatigue [1922°F (1050°C) max - 212°F (100°C)min] 10x advantage over equiaxed IN 100.

 

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Information Request Form

Please use the following form to request additional information on this, or another product. Be sure to include your full mailing address as the information will mailed to you.

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Copyright © 1999, 2004 The C-M Group. Specialty Material and Alloys Group. 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-2® and CMSX-3® alloys are registered trademarks of Cannon-Muskegon Corporation.
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