GB/T 17616-2025 Iron and steel coding system for irons,steels and alloys

GB/T 17616-2013 Unified numbering system for designation of iron,steel and alloy

GB/T 221-2000 Notations for designations of iron and steel GB/T 221-2008 Notations for designations of iron and steel GB/T 4309-1984 Classification and designation for powder metallurgy materials GB/T 4309-2009 Classification and designation for powder metallurgy materials GB/T 5612-1985 Code for representing cast iron GB/T 5612-2008 Code for representing cast iron GB/T 5612-2025 Designation of cast irons GB/T 5613-1995 Code for representing cast steels GB/T 5613-2014 Designation for cast steels GB/T 7738-2008 Notations for designation of ferroallys GB/T 7738-1987 Notations for designation of ferroalloys GB/T 13304.1-2008 Steels classification—Part 1:Classification of according to chemical composition GB/T 13304.2-2008 Steels classification—Part 2:Classification of according to main quality classes and main property or application characteristics GB/T 14984.1-2010 Ferroalloys—Vocabulary—Part 1:Materials GB/T 14992-2005 Classification and designation for superalloys and high temperature intermetallic materials GB/T 14992-2025 Superalloys and intermetallic compounds—Designation and chemical composition GB/T 15007-2008 Designations of corrosion-resisting alloy GB/T 15007-2017 Designations of corrosion-resistant alloy GB/T 15019-2003 Designation and classification of rapidly quenched metals GB/T 15019-2017 Designation and classification of rapidly quenched metals GB/T 20566-2006 Terminology of steel and alloy GB/T 20878-2007 Stainless and heat-resisting steels—Designation and chemical composition GB/T 20878-2024 Stainless steels—Designation and chemical composition GB/T 37797-2019 Precision alloys—Designation