Cannon Muskegon commenced cast superalloy modification work in the late 1970’s with CM 247 LC® alloy (also known as Rene’ 108), a DS derivative of MAR M 247 alloy.
Because of the excellent castability (freedom from DS grain boundary cracking and equiaxe hot cracking), strength and ductility – including fatigue properties, CM 247 LC® is used since 1984, for flight and industrial engine blades and vane segments (DS & equiaxed), integral axial turbine wheels and nozzles and high performance turbocharger wheels (Formula 1 racing) by at least 14 OEMS worldwide.
- CMSX®-2/3 – 1st Generation SX Alloys
- CMSX-6® – Low Density 1st Generation SX Alloy
- CMSX-4® – 2nd Generation 3% Re Alloy
- Greatest Worldwide Applications (175 Million Total Engine Hours) Flight, Industrial, and Marine Turbines
- CMSX®-10K/10N – 3rd Generation 6-7% Re Alloys
- Uncooled 2nd Stage Blades
- CM 186 LC®/CMSX-486® – SX Vane Segment Alloys, Including IGT Large Vanes
- Used As Cast
- CM 681 LC® – Sophisticated Integral Wheel Alloy (3% Re)
- CM 939 Weldable® – Structurally Weld Repairable IGT Vane and Flight Engine Integral Nozzle and High Temperature Structural Part Alloy (10 Years Engine Operating Experience).
- CMSX®-7 – Strength, Oxidation Resistance and Castability Improvement Over CMSX-3® – Zero Re
- CMSX®-8/B/C – 1.5% Re Alloy With Properties Close to CMSX-4® – Excellent SX Castability
- CMSX-4® Plus – 4th Generation SX Alloy – Excellent “All-Round” Properties
- Moderate 4-5% Re Content – Creep-Rupture Properties Close to CMSX-10K®
- Good SX Castability
- Improved Potential Single-Engine-Out Blade Capability Compared to CMSX-4®
- No SRZ (TCP) phase occurrence under TBC bond coats during high temperature, stressed turbine airfoil service exposure.
SX casting yield, casting quality and turbine engine airfoil component performance results – including component lifing/durability, for these CM manufactured proprietary alloys, is acknowledged by the gas turbine industry as world-class.