This standard stipulates the classification of quenched metals, the representation method of grades, nomenclature, and the grades, chemical composition, performance characteristics and main uses of various alloys. This standard applies to the classification of quenched metals and the naming of various grades.
GB/T 15019-2003 history
2017GB/T 15019-2017 Designation and classification of rapidly quenched metals
2003GB/T 15019-2003 Designation and classification of rapidly quenched metals