This standard specifies the classification, technical requirements, test methods, inspection rules, signs, Encasement, transportation, storage and accompanying documents of metal lanthanum and metal lanthanum powder. It is suitable for metal lanthanum prepared by molten salt electrolysis method and thermal reduction method. The main uses include special steel, non-ferrous metals, hydrogen storage materials, additives or alloying elements of magnetic materials, and reducing agents for the preparation of Miscellaneous rare earth metals. Metal lanthanum powder is prepared from metal lanthanum by hydrogenation dehydrogenation method. It is mainly used in the fields of electronic industry functional materials, alloy replacement agents, metal reducing agents, 3D printing powders, additives of non-ferrous metals and special alloys.