Steel International Number
Jun 04, 2023
International number
① International chemical element symbols and national symbols are used to represent Chemical composition, and Arabic alphabet are used to represent the content of ingredients: 12CrNi3A in China and Russia;
② Use fixed digit numbers to represent steel series or numbers: United States, Japan, 300 series, 400 series, 200 series;
③ The serial number is composed of Latin script and order, which only indicates the purpose.
Chinese numbering system
① Using element symbols
② Use, Pinyin, open hearth steel: P, rimmed steel: F, killed steel: Z, Class A steel: A, T8: special 8, GCr15: ball
◆ Composite steel, spring steel, such as 20CrMnTi 60Si2Mn, (expressed as C content in parts per ten thousand)
◆ Stainless steel, alloy Tool steel (expressed as C content in thousandths), such as one thousandth of 1Cr18Ni9 (0.1% C), stainless C ≤ 0.08%, such as 0Cr18Ni9, and ultra-low carbon C ≤ 0.03%, such as 0Cr17Ni13Mo.
