ISO 630-1:2021 PDF

Structural steels — Part 1: General technical delivery conditions for hot-rolled products

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Title (English):

ISO 630-1:2021

Structural steels — Part 1: General technical delivery conditions for hot-rolled products

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 12
Publication date:: April 20, 2021
Edition:: ISO IS 630 edition 2 version 1
ICS:: 77.140.01

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Description (English):

This document 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 this document are intended for use in welded or bolted structures. The specific requirements for structural steels are given in the individual parts of ISO 630. This document 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 1 Lists of standards covered by ISO/TC 17/SC 12 and ISO/TC 5/SC 1 are available on the ISO website. NOTE 2 In all parts of ISO 630, the term of "thickness" is considered as "nominal thickness", unless otherwise stated.

Technical details

Technical committee: ISO/TC 17/SC 3 - Steels for structural purposes
SKU: ISO 630-1:2021

Abstract

Overview

ISO 630-1:2021 - Structural steels - Part 1: General technical delivery conditions for hot-rolled products defines the general technical delivery conditions for hot‑rolled steel flat and long products (plates, sections, wide flats and bars) intended mainly for general-purpose structural steels used in welded or bolted structures. It sets out the purchaser/producer information, testing and inspection framework, and basic requirements that harmonize how structural steel is specified, supplied and verified. Note: sheet/strip and tubular products are excluded (covered by other ISO technical committees).

Key topics and requirements

Scope & classification
- Applies to plates, sections, wide flats and bars; grades designated in the ISO 630 series; thickness is treated as nominal thickness unless stated otherwise.
Information to be supplied by purchaser
- Mandatory items: quantity, product type, nominal dimensions and tolerances, ISO 630 part number, steel grade/name, options and inspection document required.
Chemical composition
- Heat and product analysis requirements and carbon equivalent considerations for weldability (options may be agreed).
Mechanical properties
- Tensile properties (ISO 6892-1 referenced), impact energy/Charpy V‑notch requirements at specified temperatures (quality A–L), and through‑thickness characteristics.
Surface condition & dimensional tolerances
- Surface finish delivery requirements and tolerances on dimensions, shape and mass are defined or referenced (e.g., ISO 7788, ISO 9034).
Inspection, sampling and testing
- Types of inspection documents (ISO 10474), sampling frequency, preparation of test pieces (ISO 377/14284), and test methods (Charpy - ISO 148‑1, tensile - ISO 6892‑1, ultrasonic - ISO 17577).
Marking and documentation
- Requirements for marking and issuance of inspection/test certificates on delivery.

Applications and practical value

Ensures consistent specification and traceability of hot‑rolled structural steels for:
- Structural steel fabricators and welding contractors
- Steel producers and rolling mills
- Construction engineers and specifiers preparing procurement documents
- Quality assurance and testing laboratories performing tensile, impact, ultrasonic and chemical analyses
- Procurement teams requiring standardized inspection certificates
Using ISO 630-1 improves interoperability between suppliers and buyers, streamlines conformity checks, and reduces disputes over material properties, surface condition, and testing.

Related standards

ISO 630 series (Parts 2–6) for specific structural steel grades and conditions
Test and inspection standards referenced: ISO 148‑1, ISO 6892‑1, ISO 17577, ISO 10474, ISO 7788, ISO 9034

Keywords: ISO 630-1, structural steels, hot-rolled products, technical delivery conditions, steel flat and long products, welded structures, nominal thickness, inspection, mechanical properties.

Related standards

Standards mentioned in the description

Abstract

Overview

Key topics and requirements

Scope & classification
- Applies to plates, sections, wide flats and bars; grades designated in the ISO 630 series; thickness is treated as nominal thickness unless stated otherwise.
Information to be supplied by purchaser
- Mandatory items: quantity, product type, nominal dimensions and tolerances, ISO 630 part number, steel grade/name, options and inspection document required.
Chemical composition
- Heat and product analysis requirements and carbon equivalent considerations for weldability (options may be agreed).
Mechanical properties
- Tensile properties (ISO 6892-1 referenced), impact energy/Charpy V‑notch requirements at specified temperatures (quality A–L), and through‑thickness characteristics.
Surface condition & dimensional tolerances
- Surface finish delivery requirements and tolerances on dimensions, shape and mass are defined or referenced (e.g., ISO 7788, ISO 9034).
Inspection, sampling and testing
- Types of inspection documents (ISO 10474), sampling frequency, preparation of test pieces (ISO 377/14284), and test methods (Charpy - ISO 148‑1, tensile - ISO 6892‑1, ultrasonic - ISO 17577).
Marking and documentation
- Requirements for marking and issuance of inspection/test certificates on delivery.

Applications and practical value

Ensures consistent specification and traceability of hot‑rolled structural steels for:
- Structural steel fabricators and welding contractors
- Steel producers and rolling mills
- Construction engineers and specifiers preparing procurement documents
- Quality assurance and testing laboratories performing tensile, impact, ultrasonic and chemical analyses
- Procurement teams requiring standardized inspection certificates
Using ISO 630-1 improves interoperability between suppliers and buyers, streamlines conformity checks, and reduces disputes over material properties, surface condition, and testing.

Related standards

ISO 630 series (Parts 2–6) for specific structural steel grades and conditions
Test and inspection standards referenced: ISO 148‑1, ISO 6892‑1, ISO 17577, ISO 10474, ISO 7788, ISO 9034

Keywords: ISO 630-1, structural steels, hot-rolled products, technical delivery conditions, steel flat and long products, welded structures, nominal thickness, inspection, mechanical properties.

ISO 630-1:2021 PDF

Technical details

Abstract

Overview

Key topics and requirements

Applications and practical value

Related standards

Related standards

Abstract

Overview

Key topics and requirements

Applications and practical value

Related standards

Related standards

Chemical analysis of steel - Order of listing elements in steel standards (ISO 6306:2020)

Metallic materials - Tensile testing - Part 1: Method of test at room temperature (ISO 6892-1:2019)

Steel — Surface finish of hot-rolled plates and wide flats — Delivery requirements

Hot-rolled structural steel wide flats — Tolerances on dimensions and shape

Steel and steel products — Inspection documents

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Steel — Ultrasonic testing for steel flat products of thickness equal to or greater than 6 mm