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Structural steels — Part 3: Technical delivery conditions for fine-grain structural steels
This part of ISO 630 covers 11 grades and four qualities. Grades S275, S355, S420 and S460 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.
This part of ISO 630 does not include the following structural steels, some of which are covered by other International StandardDetails:
— Sheet and strip — refer to ISO TC 17/SC 12, Continuous mill flat rolled products;
— Tubular products — refer to ISO TC 5/SC 1, Steel tubes.
NOTE Lists of StandardDetails covered by ISO/TC 17/SC 12 and ISO/TC 5/SC 1 are available on the ISO Web site.
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