What is ISO 4954 about?
ISO 4954 specifies requirements for non-alloy and alloy steels that are intended for cold heading or cold extruding and are delivered as wire rods, wire, or bars. It also contains specific requirements for:
- Steels not intended for heat treatment, with diameters from 2 mm to 100 mm (see Annex A)
- Case-hardening steels with diameters from 2 mm to 100 mm (see Annex B)
- Steels for quenching and tempering, including boron alloyed steels (see Table C.3), with diameters from 2 mm to 100 mm (see Annex C)
- Stainless steels with diameters of 0,8 mm up to 50 mm for austenitic steels, up to 25 mm for ferritic steels, and up to 100 mm for martensitic steels (see Annex D)
ISO 4954 (except Annex A) applies to the properties of cold-headed or cold-extruded parts
which have been subjected to a subsequent heat treatment. As the properties of the parts in the cold-headed or cold-extruded, and subsequently not-heat-treated condition, are largely dependent on the applied cold-heading or cold-extruding conditions, these are, if necessary, subject to agreement between the purchaser and the manufacturer of the parts.
Who is ISO 4954 for?
ISO 4954 on steels for cold heading and cold extruding is relevant to:
- Manufacturer of steel
- Mechanical engineer
- Metallurgist
Why should you use ISO 4954?
Cold heading and cold extrusion are the same deformation processing conditions, but the operation mode is different they are used to form metal parts at room temperature.
ISO 4954 provides information on the manufacturing process, chemical composition, mechanical properties and hardenability, grain size, surface quality testing procedures, and types of analysis required to manufacture cold heading and cold extruding steel.
With obedience and compliance to ISO 4954, you can manufacture high-quality cold heading and cold extruding steel and steel products which builds consumer trust and confidence. With ISO 4954 you can be ensured that the products consistently meet and exceed quality assurance targets.
What’s changed since the last update?
BS ISO 4954:2021 cancels and replaces the third edition (ISO 4954:2018), of which it constitutes a minor revision.
The changes compared to the previous edition are as follows:
- The wording in Decarburization, the first paragraph was corrected to "free from complete decarburization"
- In Clause E.3 on Carbide spheroidization, end of the last paragraph, a reference was added as an example: "e. G. ISO 23825"
- Editorial corrections