标准摘要
[中文适用范围]： 本部分ISO 4948标准规定了按化学成分将钢分为非合金钢和合金钢的分类体系。第二部分则依据主要质量等级及主要性能或应用特征，对非合金钢和合金钢进行分类。 [外文原描述]： This part of ISO 4948 defines steel and gives 2.0 % carbon as the usual dividing line between steel and cast iron. The classification based on the specified values for the ladle analyses of the elements given in the table.
英文名称Steels — Classification — Part 1: Classification of steels into unalloyed and alloy steels based on chemical composition