What is ISO 630‑1 about?

ISO 630-1 is the first part in the multi-series of International Standards on ‘Steels for structural purposes.’ ISO 630‑1 specifies the general technical delivery conditions for steel flat and long products (plates/ sections/wide flats and bars) used principally for general-purpose structural steels.

The steels specified in ISO 630‑1 are intended for use in welded or bolted structures.

ISO 630‑1 does not include the following structural steels, some of which are covered by other International Standards:

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: In all parts of ISO 630, the term "thickness" is considered as "nominal thickness", unless otherwise stated.

Who is ISO 630‑1 for?

ISO 630‑1 on technical delivery conditions for hot-rolled products is relevant to:

Steel manufacturers
Structural and mechanical engineers
Construction industry
Automotive industry
Welders
Fabricators

Why should you use ISO 630‑1?

Hot-rolled steel is when the steel has gone through the rolling process at temperatures higher than its recrystallisation temperature.

ISO 630‑1 provide information on the steelmaking process, delivery condition, chemical composition, mechanical properties, the surface condition required to manufacture hot-rolled steel products.

ISO 630‑1 provides different testing methods such as tensile test , impact test, thickness test and ultrasonic test which aids in determining quality of hot rolled steel.

ISO 630‑1 also covers the classification of steel grades based on chemical composition and treatment condition as well their designated steel names in accordance with ISO/TS 4949.

Compliance to ISO 630-1 will equip you with best practice guidance on ensuring greater formability and workability of hot-rolled steel for your specific engineering needs.

What’s changed since the last update?

ISO 630‑1 replaces the earlier edition(ISO 630‑1:2011), which has been technically revised. The main changes compared to the previous edition are as follows:

List of normative, options references and Content of Table Applicable standards on dimensions, tolerances, shape and mass has been updated
The designations concerning thickness have been changed to “nominal thickness”
Terms and definitions of “non-specific inspection” and “specific inspection” have been deleted because ISO 404 and ISO 10474 have been added in Clause 2
Designation of qualities has been added
The content of the document has been updated to harmonize with all parts of ISO 630

BS ISO 630-1:2021

Structural steels - General technical delivery conditions for hot-rolled products

Current

Published:

30 Apr 2021