ISO 683-15:1976
Heat-treated steels, alloy steels and free-cutting steels; Part XV : Valve steels for internal combustion engines

Заменен на ISO 683-15(1992.08)
 

5 страниц

Завершение срока действия 01.08.1992
Опубликован 01.04.1976

Heat-treated steels, alloy steels and free-cutting steels; Part XV : Valve steels for internal combustion engines