本文件规定了不锈钢的牌号和统一数字代号及其化学成分,给出了部分牌号的物理性能、牌号和统一数字代号与国外标准牌号(或近似牌号)对照表等。本文件规定的不锈钢的牌号和统一数字代号及其化学成分适用于指导不锈钢(包括钢锭和半成品)产品标准的制修订。注: 本文件中表示不锈钢的化学成分组成的各元素含量均用质量分数表示。
本标准规定了不锈钢和耐热钢牌号及其化学成分(见表1~表5),并以资料性附录的形式列入了部分牌号的物理参数、国外标准牌号或近似牌号对照表、不锈钢和耐热钢牌号适用标准等。 本标准规定的牌号及其化学成分适用于制、修订不锈钢和耐热钢(包括钢锭和半成品)产品标准时采用。
This standard specifies stainless and heat-resisting steel grades and chemical composition(see Table 1~Table 5).Physical properties of some steel grades, table of comparable grades in designation systems from other countries and applicable standards for stainless and heat-resisting steels are listed in the informative annexes.
The steel grades and chemical composition limits specified in this standard are applicable to development and revising of product standards for stainless and heat-resisting steels(including ingots and semi-finished products).