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Metal Fabrication
Select a step where Air Liquide intervenes in your value chain

Heat treatment

Air Liquide’s extensive technical knowledge of heat treatment processes, coupled with our safe, reliable and customized gas solutions, will help you optimize your operations and manage costs. ALNAT™, Air Liquide’s dedicated offer for heat treatment applications, includes the delivery of gases and  equipment as well as a range of services relating to the generation, use and control of atmospheres in industrial heat-processing furnaces. Air Liquide also produces various hydrogen gas mixtures in a wide range of balances and packaging options, and all related gas handling equipment. These gas mixtures are used specifically to modify structure characteristics of steel, such as hardness and flexibility.


In addition to industrial gases for heat treatment applications, Air Liquide’s ALPHAGAZ™ brand specialty gas mixtures are used specifically to modify the structure characteristics of steel, such as hardness and flexibility. We engineer hydrogen gas mixtures in a variety of balances and packaging options for steel and heat treatment.

Equipment for lab



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

Why choose us?

  • 01

    Diverse offer

    We offer gas cylinders in various volumes and concentrations and all associated equipment. We also supply bulk volumes and storage solutions, as well as on-site production technologies.

  • 02

    Focus on quality

    Air Liquide produces gases in a range of purities to meet your needs. We can analyze for specific impurities based on your request.

  • 03


    A global network of industry experts is available to support you in developing solutions to meet your unique challenges. Our teams have extensive experience and expertise in assembly, surface treatment and cutting techniques.

  • 04


    Air Liquide’s industry experts are backed by a global R&D network.