Our production +7 (4732) 77-12-54 394052, Voronezh st., Ostrogozhskaya 109 V krioservis@mail.ru Argon ARGON GAS AND LIQUID Gas and liquid argon GOST 10157-73 This standard applies to gaseous and liquid argon obtained from atmospheric air by deep cooling, as well as obtained from waste gases from ammonia production. Gaseous argon and liquid argon after gasification is intended for use as a protective medium in welding, cutting and melting of active and rare metals (titanium, zirconium, niobium) and alloys based on them, aluminum, aluminum and magnesium alloys, stainless chromium oxide heat-resistant alloys and alloyed steels of various grades, as well as in the refining of metals in metallurgy. Argon gas is an inert gas, colorless and odorless, with a density under normal conditions (20C and 760 mmrt. st.) - 1,662 kg / m3 Liquid argon is a colorless, odorless liquid with a boiling point at normal pressure (760 mmrt. Art.) 87.29 K and density at 87.29 K - 1392 kg / ml Formula: Ar Atomic mass (by international atomic masses 1969 year.) —39.948 TECHNICAL REQUIREMENTS Depending on the content of impurities, gaseous and liquid argon is produced in three grades. In terms of physical and chemical parameters, gaseous and liquid argon must comply with the standards specified in table. I. Table I The name of indicators Rate for varieties Higher 1st 2nd 1. Content of argon, vol. %, not less 99.990 99.98 99.95 2. Oxygen content, vol. %, no more 0.001 0.003 0.005 3. Nitrogen content, vol. %. no more 0.008 0.01 0.04 4. Content of water vapor, g / m3 under normal conditions (20C and760 mm r.st.), no more 0.01 0.03 0.03 which corresponds to the saturation temperature of argon at a pressure 760 mm rt. Minus 58 Minus 50 Minus 50 5. Content of carbon dioxide and hydrocarbons in the sum. vol% CO, no more carbon. 0.001 0.005 0.005 Copyright © "Krioservice" 2008 All rights reserved