ISO 4954-1:2024

Overview - ISO 4954-1:2024 (Steels for cold heading and cold extruding)

ISO 4954-1:2024 defines technical delivery conditions for non‑alloy and alloy steels intended specifically for cold heading and cold extruding. It covers steels delivered as wire rod, wire or bars and sets the requirements for steels with diameters from 2 mm to 100 mm. The standard includes normative annexes with tailored requirements for:

• steels not intended for heat treatment (Annex A),
• case‑hardening steels (Annex B),
• steels for quenching and tempering, including boron‑alloyed grades (Annex C).

Note: stainless steels for cold heading/extruding are covered separately in ISO 4954-2.

Key topics and technical requirements

ISO 4954-1 addresses the full set of delivery and acceptance criteria required for reliable cold forming:

• Classification and designation of steel grades for cold heading/cold extruding.
• Information to be supplied by the purchaser, including mandatory and optional data for orders.
• Manufacturing process attributes such as deoxidation, heat‑treatment condition, surface condition and traceability.
• Chemical composition and mechanical properties (tensile/impact where applicable) and hardenability (for case‑hardening and quench/tempered steels).
• Microstructure controls: grain size and carbide spheroidization.
• Non‑metallic inclusions and internal soundness requirements.
• Aptitude to cold forming (upsetting tests) and surface quality standards for wire rod, bars and bright products.
• Decarburization, shape, dimensions and tolerances.
• Inspection, sampling and testing procedures (chemical, mechanical, hardenability, non‑destructive testing) plus marking, packaging and traceability.

Practical applications

This standard is practical for organizations that specify, manufacture or inspect steels and components intended for cold forming:

• Fastener and bolt manufacturers producing high‑volume cold‑headed parts.
• Automotive and aerospace suppliers where cold‑formed components require controlled properties and post‑forming heat treatment.
• Wire‑rod and bar producers delivering material for cold extrusion operations.
• Quality, purchasing and metallurgical engineers who must specify material acceptance criteria, testing frequencies and traceability.

Using ISO 4954-1 helps ensure consistent material performance in cold forming operations, reduces scrap and rework, and provides a harmonized basis for procurement and conformity assessment.

Related standards

• ISO 4954-2 (stainless steels for cold heading/extruding)
• Relevant normative references cited in ISO 4954-1: ISO 377, ISO 404, ISO 642 (Jominy), ISO 643 (grain size), ISO 683 series (heat‑treatable steels)

Keywords: ISO 4954-1, cold heading, cold extruding, non‑alloy steels, alloy steels, technical delivery conditions, wire rod, case‑hardening, quenching and tempering, material specification.