ISO/TS 4949:2016规定了通过符号字母和数字来表示应用和主要特征（如机械、物理、化学）的国际标准化钢种的命名规则，以便提供钢种的缩写标识。 注1:为避免歧义，根据本文件建立的主要符号可由识别钢或钢产品其他特性的附加符号补充，例如，在高温或低温下使用的适用性、表面条件、处理条件、脱氧。 注2:这些规则也适用于国家或地区标准化钢材。

ISO/TS 4949:2016 specifies rules for the designation of internationally standardized steel grades by means of symbolic letters and numbers to express application and principal characteristics (e.g. mechanical, physical, chemical) so as to provide an abbreviated identification of steel grades. NOTE 1 In order to avoid ambiguity, the principal symbols established according to this document can be supplemented by additional symbols identifying additional characteristics of the steel or steel product, e.g. suitability for use at high or low temperatures, surface condition, treatment condition, deoxidation. NOTE 2 These rules can also be applied to nationally or regionally standardized steels.