Overview
ISO 17607-2:2023 - "Steel structures - Execution of structural steelwork - Part 2: Steels" defines the general requirements for steels and steel products used in the execution of structural steelwork. Intended to be used together with ISO 17607-1 (General requirements and vocabulary), this part covers material identification, inspection documents, traceability, product selection, and essential characteristics for steels used as structures or fabricated components.
Keywords: ISO 17607-2, structural steel, steel structures, execution of structural steelwork, structural steels, steel products, inspection documents.
Key topics and requirements
- Scope and linkage: Works in conjunction with ISO 17607-1 and other parts of the series (fabrication, erection, welding, bolting) to provide a complete execution framework.
- Execution specification: Requires that material properties, options and execution levels (see Annex A) are agreed and recorded before work starts; allows technically equivalent national standards to be referenced when documented.
- Identification, inspection and traceability: Inspection documents are specified in line with ISO 10474. Typical requirements:
- Lower-strength steels (≤ 275 MPa) - Type 2.2 inspection documents.
- Higher-strength steels (> 275 MPa) - Type 3.1 inspection documents (Type 3.2 acceptable where 3.1 is listed).
- Special cases (e.g., castings, high-strength cables, bearings) default to Type 3.1 unless notes permit Type 2.2.
- Structural steels and products: Steel grades, qualities and any product options must be specified. Product standards referenced include the ISO 630 series (hot‑rolled, fine‑grain, high‑yield, atmospheric corrosion resistant, seismic-improved steels) and standards for hollow sections (ISO 10799, ISO 12633).
- Declared properties: Information must be available for yield/tensile strength, elongation, impact/toughness (if required), thermal treatment, through‑thickness properties (ISO 7778) and limits on discontinuities in weld zones where specified.
- Welding considerations: Welding-related classification or carbon equivalent (CEV) information must be provided to assess weldability (grouping systems referenced in ISO/TR 20172–20174).
- Manufacturing tolerances and surface condition: Plate thickness tolerances and surface conditions follow applicable product standards unless the execution specification states otherwise.
Applications and users
ISO 17607-2 is practical for:
- Structural engineers and designers specifying material requirements.
- Fabricators and steelwork contractors ensuring conformity, traceability and inspection.
- Procurement teams and owners defining execution specifications in projects without a regional/national standard.
- QA/QC managers and inspectors preparing inspection documents and verifying material properties.
Practical uses include material selection for buildings, bridges and industrial structures; defining inspection and traceability regimes; and coordinating welding and fabrication requirements.
Related standards
- ISO 17607-1, -3, -4, -5, -6 (Execution series: general, fabrication, erection, welding, bolting)
- ISO 10474 (inspection documents)
- ISO 630 series (structural steels)
- ISO 7778 (through-thickness characteristics)
- ISO/TR 20172–20174 (welding material grouping)
- ISO 10799 / ISO 12633 (hollow sections)
For project implementation, reference Annex A (execution options and levels) and Annex B (national standards mapping).
