Helium

Helium is one of the noble gases among Argon, Krypton, Neon, Radon and Xenon. A helium atom consists of two protons, two neutrons and two electrons. The electrons are located in the same, closed electron shell. The completely filled electron shell causes helium to be very inert. So far, no chemical compound with helium has been discovered.

Helium as inert gas

Even under extreme conditions, helium does not form compounds with other elements. Due to this inertness, helium is perfectly suited as an inert gas for industry. For example, for welding or laser cutting, helium displaces the ambient air and prevents chemical reactions between the heated metal and the oxygen contained in the air.

See also

Brinell hardness test

Performing the hardness test by means of a ball pressure test according to the Swedish engineer Johann August Brinell.

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Coil

Plate metal that is rolled-up to coils is easier to transport and requires less space in the warehouse

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Corrosion

Corrosion is a natural process and damages most metals. What types of corrosion are there?

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