C69 steel is a member of a new class of carburized secondary hardening gear and bearing steels that utilize an efficient M2C precipitate strengthening dispersion, computationally designed using our Materials by Design methodology. C69 can achieve case hardness of up to 67 HRC, promoting high surface wear resistance and contact fatigue life. C69 offers greater surface hardenability but lower fracture toughness than C64. Potential applications include camshafts and other components which experience very high surface loads.
Material and Licensing Availability
Only very limited quantities of C69 are currently available for testing, evaluation and use, and it is very unlikely that we can fulfill requests for small amounts or samples. Please contact us for more infromation.
- Design, Development and Application of New, High–Performance Gear Steels
An article describing QuesTek's new class of high-strength, secondary hardening steels, including Ferrium® C61™, C64™ and C69™, that are optimized for high-temperature, low-pressure carburization - Gear Technology, January/February 2010
- Pitting and Bending Fatigue Evaluations of Ferrium® C69™
This article provides a fatigue performance analysis of QuesTek's new gear steel, Ferrium® C69™, in comparison to baseline AISI 9310 and Pyrowear 53 steels - Gear Technology, March/April 2008