Argon is a non-flammable gas that forms 0.9 per cent of the earth's atmosphere.
Most commonly used in the metal industry for metal production, processing and fabrication, it can be used as a pure gas for certain shielding, blanketing, annealing and hot isostatic pressing (HIPing) applications. It can also be used as part of a mixture with other gases, in particular carbon dioxide, oxygen, nitrogen, hydrogen or helium, depending on the process and material.
Its inert properties make argon popular in other industries such as the glass industry for double glazing, the food industry for removing oxygen from wine barrels, and analytical laboratories who use it as a carrier gas in gas chromatography (GC) and in ICP-MS equipment.
Air Products offers compressed argon gas and liquid argon in a variety of purities and in various modes of supply around the world thanks to our network of storage and transfill facilities.
Microbulk Applications Engineer, North America
Is my gas purity adequate for my process?
Industrial gases (such as nitrogen, hydrogen, and argon) for furnace atmospheres are characterized by their very high purity (>99.995%). Typical impurity levels are much less than 10 parts per million by volume (ppmv) oxygen and less than 3 ppmv moisture (<– 90° F dew point). This purity is typically adequate for many processes involving a wide array of materials. Some materials, though, due to their high reactivity, may require additional purification to reach even lower levels of impurity, especially with gases supplied via bulk or tube trailer supply modes. Some facilities install in-line purifiers as an added precaution against impurities picked up from the houseline. In-line purification typically involves the removal of oxygen and moisture. Sometimes with argon supply, it is necessary to remove trace nitrogen impurities. The choice of purifier is dependent on the gas and the type and amount of impurities to be removed.