Numbering and Representation of Stainless Steel
Number and representation method of stainless steel:
① Use international chemical element symbols and national symbols to represent chemical composition, and use Arabic letters to represent composition content: such as China and Russia 12CrNi3A
② Use fixed digit numbers to represent steel series or numbers; For example, the United States, Japan, 300 series, 400 series, 200 series;
③ Use Latin letters and order to form a serial number, indicating only the purpose.
The numbering system in China:
① Using element symbols
② Usage, Chinese Pinyin, Open Hearth Steel: P, Boiling Steel: F, Killed Steel: B, Class A Steel: A, T8: Special 8, GCr15: Ball
◆ Composite steel, spring steel, such as 20CrMnTi 60SiMn, (expressed as C content in parts per ten thousand)
◆ Stainless steel and alloy tool steel (expressed in thousandths as C content), such as 1Cr18Ni9 in thousandths (i.e. 0.1% C), stainless C ≤ 0.08%, such as 0Cr18Ni9, ultra-low carbon C ≤ 0.03%, such as 0Cr17Ni13Mo
International stainless steel marking method:
The American Iron and Steel Institute uses three digits to indicate various standard grades of malleable stainless steel. Among them:
① Austenitic stainless steel is marked with numbers from the 200 and 300 series,
② Ferritic and martensitic stainless steels are represented by 400 series numbers. For example, some more common austenitic stainless steels are marked with 201, 304, 316, and 310,
③ Ferritic stainless steel is marked with 430 and 446, while martensitic stainless steel is marked with 410, 420, and 440C, with a dual phase (austenite ferrite),
④ Stainless steel, precipitation hardened stainless steel, and high alloys with an iron content of less than 50% are usually named under patent or trademark names.
① Use international chemical element symbols and national symbols to represent chemical composition, and use Arabic letters to represent composition content: such as China and Russia 12CrNi3A
② Use fixed digit numbers to represent steel series or numbers; For example, the United States, Japan, 300 series, 400 series, 200 series;
③ Use Latin letters and order to form a serial number, indicating only the purpose.
The numbering system in China:
① Using element symbols
② Usage, Chinese Pinyin, Open Hearth Steel: P, Boiling Steel: F, Killed Steel: B, Class A Steel: A, T8: Special 8, GCr15: Ball
◆ Composite steel, spring steel, such as 20CrMnTi 60SiMn, (expressed as C content in parts per ten thousand)
◆ Stainless steel and alloy tool steel (expressed in thousandths as C content), such as 1Cr18Ni9 in thousandths (i.e. 0.1% C), stainless C ≤ 0.08%, such as 0Cr18Ni9, ultra-low carbon C ≤ 0.03%, such as 0Cr17Ni13Mo
International stainless steel marking method:
The American Iron and Steel Institute uses three digits to indicate various standard grades of malleable stainless steel. Among them:
① Austenitic stainless steel is marked with numbers from the 200 and 300 series,
② Ferritic and martensitic stainless steels are represented by 400 series numbers. For example, some more common austenitic stainless steels are marked with 201, 304, 316, and 310,
③ Ferritic stainless steel is marked with 430 and 446, while martensitic stainless steel is marked with 410, 420, and 440C, with a dual phase (austenite ferrite),
④ Stainless steel, precipitation hardened stainless steel, and high alloys with an iron content of less than 50% are usually named under patent or trademark names.
