ISO 6929:2013

Overview

ISO 6929:2013 - Steel products - Vocabulary is an international standard that defines standardized terminology for steel products. It organizes terms by:

• stage of manufacture (e.g., liquid steel, ingots, semi‑finished products),
• shape and dimensions (flat products, long products, blanks), and
• appearance (coated, uncoated, surface finish).

The second edition (2013) replaces ISO 6929:1987 and includes comprehensive lists, annexes with alphabetical and numerical vocabularies, and illustrative examples (sheet piles, mining frames, heavy sections).

Key topics and technical requirements

ISO 6929 does not set mechanical or chemical requirements - it provides precise definitions and classification rules that support technical specifications. Major topics covered include:

• Liquid steel - definition of steel in the liquid state ready for pouring.
• Ingots and semi‑finished products - terms such as ingot, slab ingot, blooms, billets, blanks for sections and tubes; special remelted products (VAR, ESR) are defined with their intended improvement in homogeneity and cleanliness.
• Flat products - terminology for hot‑rolled and cold‑rolled products, sheets, plates, strips, wide flat and coil forms. Notable definitional thresholds included in the standard:
  • sheet vs plate distinction at 3 mm thickness,
  • common winding and width categories (e.g., 600 mm reference for wide strip),
  • skin pass (light cold pass) and cold‑rolling reductions (generally ≥25% for cold‑rolled classification).
• Special product vocabularies - electrical steel (non‑oriented and grain‑oriented), tin mill products (blackplate, tinplate, ECCS), and metal‑coated sheets and strips.
• Annexes - numeric and alphabetic term indexes plus practical examples (e.g., typical sheet pile and heavy section shapes).

All dimensions in ISO 6929 are nominal, and many notes clarify common industry practices (edge conditions, coatings, supply forms).

Applications and who uses it

ISO 6929 is essential for:

• Steel producers and mills - for product descriptions, catalogs and internal classification.
• Procurement, spec writers and purchasers - to ensure unambiguous purchase orders and contracts.
• Design and structural engineers - to reference correct product forms in drawings and bills of materials.
• Quality, testing and inspection bodies - for consistent reporting and traceability.
• Standards committees, technical translators and customs/classification authorities - to harmonize terminology across documents and jurisdictions.

Using ISO 6929 improves clarity in specifications, reduces misinterpretation in supply chains, and supports interoperability between manufacturers and end users.

Related standards and resources

ISO 6929 was prepared by ISO/TC 17 (Steel) and references the ISO/IEC Directives for standards development. For authoritative use, obtain the full text from ISO or national standards bodies to ensure access to all definitions, annexes and notes.