Металлы легкие и их сплавы. Код обозначения, основанный на химических знаках
Название (англ.):
Light metals and their alloys; Code of designation based on chemical symbols
Описание (англ.):
The designations of metals and alloys shall be based on the chemical composition limits given in International Standards. International chemical symbols shall be used for the designation of the principal metal and the major alloying elements followed by numbers indicating the metal grade or the nominal alloy content.