ISO-630-2 › Structural steels - Part 2: Technical delivery conditions for structural steels for general purposes
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This document specifies qualities for steels for general structural use. This document applies to steel plates rolled on a reversing mill, wide flats, hot-rolled sections and bars, which are used in the as-delivered condition and normally intended for welded or bolted structures.
This document covers 8 steel grades and 4 qualities. GradesÂ S235, S275, S355, and S460 are covered in AnnexÂ A. GradesÂ SG205, SG250, SG285 and SG345 are covered in AnnexÂ B. Not all grades are available in all qualities, and some qualities have Charpy Vâ..notch requirements.
The steels specified in this document are applicable to hot-rolled flat products and sections with:
â..Â Â Â thicknesses â.¥Â 3Â mm and â.¤Â 150Â mm for long products of steel grade S460 all qualities;
â..Â Â Â thicknesses â.¥Â 3Â mm and â.¤Â 250Â mm for long products or â.¤Â 400Â mm for flat products of all other grades and qualities;
and no restriction on nominal thickness for grades SG205, SG250, SG285, and SG345 for flat products, sections and long products.
This document does not include the following structural steels, some of which are covered by other International Standards:
â..Â Â Â sheet and strip: refer to ISOÂ TCÂ 17/SCÂ 12 â..Continuous mill flat rolled productsâ..;
â..Â Â Â tubular products: refer to ISOÂ TCÂ 5/SCÂ 1 â..Steel tubesâ...
NOTEÂ 1Â Â Â Lists of standards covered by ISO/TCÂ 17/SCÂ 12 and ISO/TCÂ 5/SCÂ 1 are available on the ISO website.
NOTEÂ 2Â Â Â In all parts of ISO 630, the term of "thickness" is considered as "nominal thickness", unless otherwise stated.
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April 1, 2021
ISO/TC 17/SC 3