ISO 630-2 is the second part in the multi-series of International Standards on ‘Steels for structural purposes’. ISO 630‑2 specifies qualities for steels for general structural use.
ISO 630‑2 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.
ISO 630‑2 covers 8 steel grades and 4 qualities. Grades S235, S275, S355, and S460 are covered in Annex A. Grades SG205, SG250, SG285 and SG345 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 ISO 630‑2 apply to hot-rolled flat products and sections with:
ISO 630‑2 on structural steels is relevant to:
Structural steel is a category of steel used for making construction materials in a variety of shapes.
ISO 630‑2 specifies eight steel grades. Each grade is available in up to four qualities. These grades and qualities differ in their specified mechanical properties and impact energy requirements.
ISO 630‑2 provides information on classification and designation of grades and qualities of the steel, steelmaking process, delivery condition, chemical composition, mechanical properties and the surface condition required to manufacture high-quality structural steel.
Charpy V-notch test, tensile test and impact test is provided in ISO 630‑2.
Compliance to ISO 630-2 will equip you with best practice guidance on ensuring greater formability and workability of structural steel and make the right choice for your specific engineering needs. Incorporating a standardised process will also aid in improved product development and stringent quality control measures.
BS ISO 630‑2:2021 supersedes BS ISO 630‑2:2011, which has been withdrawn. The main changes compared to the previous edition are as follows: