Industrial Gases from a Global Leader
- Global leading manufacturer of nitrogen, oxygen, and argon
- World-leading producer and supplier of hydrogen and helium
- Reliable supply of industrial gases
- Excellent record of meeting on-time needs
- The industry leader in safety
- Technical support when you need it
- World-class customer service
Covai Air Products gases, typically provided in gaseous and liquid form, enable customers in a wide range of industries to improve their environmental performance, product quality, and productivity.
Useful as a gas, for its inert properties, and as a liquid for cooling and freezing. Virtually any industry can benefit from its unique properties to improve yields, optimize performance and make operations safer.
ASK A QUESTION
Why would I want to cryogenically treat tool steels? Does it really affect the microstructure?
After austenitizing and quenching, tool steels are sometimes subjected to cold treatment at approximately –80°C (-112°F), followed by tempering. Primarily, the cold treatment is done to increase strength, improve dimensional or microstructure stability, and improve wear resistance. These benefits are due to the transformation of retained austenite to martensite. Some studies show that lowering the cold treatment temperature below –100°C (-148°F) does not significantly increase the amount of retained austenite-to-martensite transformation—therefore, it does not result in additional benefits. However, other studies show that compared to cold treatment (–80°C / -112°F), cryogenic treatment (–190°C / -310°F) further improves wear resistance.
Get in touch with our technical experts.
Let us help you determine how to maximize the benefits of the Cryotreating process.