标准编号：ISO 630-3:2021
中文名称：结构钢 第3部分：细晶粒结构钢的交货技术条件
英文名称：Structural steels — Part 3: Technical delivery conditions for fine-grain structural steels
发布日期：2021-04
标准范围
This document specifies requirements for flat and long products of hot-rolled weldable fine- grain structural steels in the as-rolled (for SG grades only), normalized/normalized rolled and thermomechanical processed delivery conditions. It applies to steel plates rolled on a reversing mill, wide flats, hot-rolled sections and bars, which are intended for use in heavily loaded parts of welded or bolted structures.
This document covers 13 grades and 6 qualities. Grades S275, S355, S390, S420, S460 and S500 are covered in Annex A. Grades SG245, SG290, SG325, SG345, SG365, SG415 and SG460 are covered in Annex B. Not all grades are available in all qualities, and some qualities have Charpy V-notch requirements.
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