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Air Liquide in the value chain

Deep Cryogenic Treatment (DCT)

Air Liquide’s ALNAT™ DCT solution treats components through exposure to temperatures below 150 degrees Fahrenheit. Benefits of ALNAT DCT include increased resistance to wear, abrasion, pitting and spalling while reducing residual stress for a longer use life. The ALNAT DCT solution will help ensure a controlled atmosphere providing safety, efficiency and reliability.




Our ALNAT brand solutions include bulk gas supply, related gas handling equipment, and a range of services related to the generation, use and control of atmospheres. We provide process and safety audits to optimize the use of cryogenic and heat treatment furnaces and assist in troubleshooting. Additionally, we provide training to help ensure safe, smooth and efficient processes.


Our ALNAT supply solutions will help you ensure a controlled atmosphere in terms of safety, efficiency, and reliability in heat treat applications, including annealing, brazing and carburizing, and also in deep cryogenic treatments.

Why choose us?

  • 01

    High quality gas solutions

    Our gases are compatible with new lightweight composite materials used in the fabrication of components and the upkeep of aircraft.

  • 02


    Air Liquide gas solutions are reliable, reproducible and in compliance with stringent and ever-evolving regulations.

  • 03

    World-class expertise

    As a global company with an international network of experts that specialize in heat treatment, welding and curing, Air Liquide is ready to support your development and innovation.

  • 04

    Sustainable solutions

    We are deeply committed to sustainable development. Our solutions for the aeronautics industry have been developed with the environment and regulatory compliance at top of mind.