![]() The modes of application for gas shielded welding processes include, but are not limited to: manual, semiautomatic, mechanized, and automatic weld methods. ![]() ![]() The purpose of this standard is to classify and designate these gases and gas mixtures in accordance with their chemical properties and metallurgical behavior as the basis for correct selection by the user and to simplify the possible qualification procedures. This standard specifies requirements for the classification of gases and gas mixtures that chemically shield or chemically react with the filler material, base metal, and weld metal, and are used in fusion welding and allied processes including, but not limited to:
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