结构钢第5部分:耐大气腐蚀性能提高的结构钢交货技术条件

[中文适用范围]： 本文件规定了在轧制、正火/正火轧制、热机械控制处理和淬火回火交货条件下具有改进的耐大气腐蚀性能的热轧结构钢扁平材和长材产品的质量。它适用于在可逆式轧机上轧制的钢板、宽扁钢、热轧型材和钢筋，这些钢材用于焊接或螺栓结构。本文件涵盖 14 个等级和 5 个质量。S235、S295、S355、S420、S460、S500 和 S550 等级包含在附录 A 中。SG245、SG345、SG365、SG400、SG460、SG500 和 SG700 等级包含在附录 B 中。并非所有等级都具有所有质量，并且某些质量具有夏比 V 型缺口要求。本文件规定的钢材适用于S235W、S295W、S355W、S420W、S460W、S500W、S550W级最大公称厚度为150mm的热轧板材、宽扁钢、型材和棒材，SG245、SG345、SG365、SG400、SG460、SG500、SG700级最大公称厚度为200mm的热轧板材、宽扁钢、型材和棒材。本文件规定的钢材适用于S295WP、S355WP级最大公称厚度为20mm的热轧板材。本文件规定的钢材适用于S295WP、S355WP级最大公称厚度为40mm的热轧宽扁钢、型材和棒材。本文件中规定的钢材适用于 S355WSE 级最大公称厚度为 80 毫米的热轧钢板。本文件不包括以下结构钢，其中一些由其他国际标准涵盖。 — 薄板和带材，例如 ISO 4995 或 ISO 4996； — 管材。例如 ISO 12633-1、ISO 12633-2。注：在本文件中，除非另有说明，术语“厚度”均视为“公称厚度”。 [外文原描述]： This document specifies qualities for flat and long products of hot-rolled structural steels with improved atmospheric corrosion resistance in the as-rolled, normalized/normalized rolled, thermomechanical control processed and quenched and tempered delivery conditions. It is applicable to steel plates rolled on a reversing mill, wide flats, hot-rolled sections and bars, which are intended for use in welded or bolted structures. This document covers 14 grades and 5 qualities. Grades S235, S295, S355, S420, S460, S500 and S550 are covered in Annex A. Grades SG245, SG345, SG365, SG400, SG460, SG500, and SG700 are covered in Annex B. Not all grades are available in all qualities, and some qualities have Charpy V-notch requirements. The steels specified in this document are applicable to hot-rolled plates, wide flats, sections and bars with a maximum nominal thickness of 150 mm for grades S235W, S295W, S355W, S420W, S460W, S500W and S550W, with a maximum nominal thickness of 200 mm for grades SG245, SG345, SG365, SG400, SG460, SG500, and SG700. The steels specified in this document are applicable to hot-rolled plates with a maximum nominal thickness of 20 mm for grades S295WP and S355WP. The steels specified in this document are applicable to hot-rolled wide flats, sections and bars with a maximum nominal thickness of 40 mm for grades S295WP and S355WP. The steels specified in this document are applicable to hot-rolled plates with a maximum nominal thickness of 80 mm for grade S355WSE. This document does not include the following structural steels, some of which are covered by other International Standards. — sheet and strip, e.g. ISO 4995 or ISO 4996; — tubular products. e.g. ISO 12633-1, ISO 12633-2. NOTE In this document, the term of "thickness" is considered as "nominal thickness", unless otherwise stated.