Nitrogen for the metal fabrication industry

The inert gas that can become active.

A multipurpose gas in the metal fabrication sector

This gas has the characteristic of being inert under normal conditions, but if subject to high temperatures or to an electric arc, it can become active. As such, it has the ability to influence the final result of the process. It is widely used in plasma and laser cutting processes for noble materials such as austenitic or high alloy steels and aluminum.

Pure Nitrogen is used for root protection. It can also be mixed with Hydrogen or Argon for the welding of Duplex and Superduplex steels.
Boiling point
1,4023 J/mol
First ionisation energy
Relative density
Related gases
Hydrogen for the metal fabrication industry
Hydrogen is a combustible and very light gas that has the characteristic of binding easily with Oxygen. For its deoxidizing function and the contribution of energy it can give to the welding process, Hydrogen is used, in small percentages, in the TIG and MAG welding processes.
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Helium for the metal fabrication industry
Like Argon, Helium is an absolutely inert gas that does not react under any circumstances. Thanks to its ionization potential, it transfers more energy, bringing more heat into the welded joint. In addition, the low specific weight of Helium widens the protection cone, which facilitates the cooling of the welded joint.
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Carbon Dioxide for the metal fabrication industry
Carbon Dioxide is the active gas par excellence, especially for carbon steel welding. The energy, coming from the electric arc, separates the Carbon Dioxide into Oxygen, the true active gas in the process, and Carbon. The carbon replaces the gas contained in the steel, which is lost in the welding process, leaving the chemical composition of the welded joint unchanged.
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Acetylene for the metal fabrication industry
Acetylene is a fuel gas which, combined with Oxygen, generates a very high flame temperature and an atmosphere that can be used in braze-welding and other oxy-fuel technologies. Its instability is resolved by storing it in special cylinders that contain a porous mass that is first saturated with a solvent (Acetone or DMF). The Acetylene is than dissolved in the solvent to make it stable and safe to use.
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