Gas and liquid argon is used as protective medium at welding, cutting, melting of active and rare metals and metal alloys – aluminum, aluminum and magnesium alloys, stainless nickel chrome heat-resistant alloys and steels of various grades, and also in metal refining process in metallurgy industry. It is produced by low-temperature rectification of tail gases obtained from ammonia production.
Main technical characteristics
|Main specifications||Top grade OKP code 21 1183 0120||1st grade OKP code 21 1483 0130|
|Volume fraction of argon, %, no less than||99.993||99.987|
|Volume fraction of oxygen, %, no less than||0.0007||0.002|
|Volume fraction of nitrogen, %, no more than||0.005||0.01|
|Percentage by weight of steam at the temperature 20°С and pressure 101.3 кPa (760 mmHg), g/cm³, no more than||0.007||0.01|
|Volume fraction of water steam, %, no more than||0.0009||0.001|
|Volume fraction of the sum of carbonaceous compounds in calculation on CO3, %, not more than||0.0005||0.001|
Volume concentration of total carbon-bearing compounds is not rated in gaseous and liquid argon, produced from air, if wet argon is cleaned by electrolytic hydrogen not-containing admixtures of carbon-bearing compounds and alkali, and also hydrogen of coke oven gas and gas synthesis, especially additionally-cleaned in ammonia production.
Normal values for the liquid argon meet the values of the gas argon produced at full evaporation of the liquid argon sample.
Quality figures of liquid argon shall correspond to above-specified rates, providing reduction of liquid argon quantity due to its evaporation under transportation and storage for not more than 10% of shipped quantity.
Argon is non-toxic and explosion-proof. Liquid argon – low-boiling liquid, which may cause freeze burn of the skin and conjunctiva damage.
Shelf life – 18 months from the date of production.