SIST EN 10338:2025/oprA1:2026

• Abstract:

  This document applies to hot rolled and cold rolled non-coated steel flat products made of multiphase steels for cold forming. It covers cold rolled products of thicknesses t < 3 mm and hot rolled products of thicknesses t ≤ 6,5 mm.; These products are delivered in sheet, hot rolled strip, slit hot rolled strip, cold strip, slit cold rolled strip or cut lengths obtained from slit wide strip.; Flat products of multiphase steels for cold forming can be delivered with an electrolytic zinc coating according to EN 10152.

• Status: Not Published
• Public Enquiry End Date: 19-Oct-2026
• ICS: 77.140.50 - Flat steel products and semi-products
• Technical Committee: IFEK - Ferrous metals
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 14-Aug-2026
• Due Date: 01-Jan-2027
• Ref Project: EN 10338:2025/prA1 - Hot rolled and cold rolled non-coated products of multiphase steels for cold forming - Technical delivery conditions

• Amends: SIST EN 10338:2025 - Hot rolled and cold rolled non-coated products of multiphase steels for cold forming - Technical delivery conditions
• Effective Date: 25-Feb-2026

SIST EN 10338:2025/oprA1:2026 is a draft amendment from CEN for EN 10338:2025, the European standard for hot rolled and cold rolled non-coated products of multiphase steels for cold forming. It updates the delivery conditions for these flat steel products by changing the normative references, one mechanical-property designation, and the wording for how mechanical properties are determined and tested.

What does SIST EN 10338:2025/oprA1:2026 specify?

SIST EN 10338:2025/oprA1:2026 modifies EN 10338:2025, which applies to hot rolled and cold rolled non-coated steel flat products made of multiphase steels for cold forming. The base scope covers cold rolled products with thickness t < 3 mm and hot rolled products with thickness t ≤ 6,5 mm, supplied as sheet, hot rolled strip, slit hot rolled strip, cold strip, slit cold rolled strip, or cut lengths from slit wide strip.

The amendment is organized as a European foreword and three modification items.

Part	What it covers
European foreword	CEN committee responsibility, enquiry status, and amendment status
Clause 2	Normative References
8.2	Mechanical Properties
9.3	Tests to be carried out

The base standard also notes that these flat products can be delivered with an electrolytic zinc coating according to EN 10152.

What are the key requirements of SIST EN 10338:2025/oprA1:2026?

SIST EN 10338:2025/oprA1:2026 changes how the standard points to calculation methods, how one steel grade is identified, and how mechanical properties are determined in practice.

Normative references

Clause 2 adds EN 10373, Determination of the physical and mechanical properties of steels using models. In practice, this means that when the standard allows properties to be determined by calculation, the calculation route is tied to a named reference method instead of an unspecified approved method.

Mechanical properties

In 8.2, Table 5 is revised for grade HCT1180C by replacing the steel number entry. For users, that means the grade designation in procurement documents, certificates, and internal product records needs to match the updated table.

Tests to be carried out

Clause 9.3 changes the rule for determining mechanical properties. SIST EN 10338:2025/oprA1:2026 makes the manufacturer responsible for choosing between testing and calculation unless another arrangement is agreed at enquiry and order. If mechanical testing is used, one series of tests is carried out per test unit as defined in 9.2.

If the manufacturer determines the properties by calculation, the method must follow EN 10373. In practice, buyers need to state clearly whether they want test-based results or accept calculated results.

Order agreement and documentation

The revised wording in 9.3 links the choice of method to the enquiry and order. That matters because the delivery condition is no longer just a laboratory question - it becomes part of what the buyer and manufacturer agree before supply.

What terms does SIST EN 10338:2025/oprA1:2026 define?

• CEN - The European Committee for Standardization, which issues the amendment.
• CEN/TC 459/SC 9 - The technical committee and subcommittee responsible for flat products to be used for cold forming.
• EN 10373 - The referenced standard for determining physical and mechanical properties of steels using models.
• HCT1180C - A steel grade designation listed in Table 5 whose steel number is updated by this amendment.
• Mechanical properties - The properties covered by clause 9.3, which may be determined by testing or by calculation.
• Test unit - The unit of product for which one series of tests is carried out when mechanical testing is used.

Who uses SIST EN 10338:2025/oprA1:2026?

SIST EN 10338:2025/oprA1:2026 is used by steel producers, cold-rolling and hot-rolling mills, service centres, laboratories, and buyers of multiphase flat steel products. It is also relevant to quality managers and purchasing engineers who need to agree how properties are verified.

In practice, users apply it when specifying delivery conditions, checking steel grade identification, deciding whether results come from testing or calculation, and preparing certificates or inspection records for cold-forming applications.

What changed in SIST EN 10338:2025/oprA1:2026 from the previous edition?

SIST EN 10338:2025/oprA1:2026 modifies EN 10338:2025 in three places:

• Clause 2 adds EN 10373 to the normative references.
• In 8.2, Table 5 changes the steel number for HCT1180C.
• In 9.3, the text on determining mechanical properties is revised so that the manufacturer may choose the method unless otherwise agreed, and any calculation route must follow EN 10373.

Which standards are used with SIST EN 10338:2025/oprA1:2026?

• EN 10373 - Used for determining mechanical properties by calculation when the manufacturer chooses that route.
• EN 10152 - Cited in the scope as the coating standard for electrolytic zinc coating on these flat products.

What does the SIST EN 10338:2025/oprA1:2026 document contain?

SIST EN 10338:2025/oprA1:2026 contains amendment text rather than the full base standard. It shows the change to the normative references clause, the updated steel-number entry in Table 5, and the revised wording in 9.3 for testing and calculation of mechanical properties.

The document is set out for CEN enquiry and comment, so it is intended to be read as a set of changes to EN 10338:2025. For implementation, the useful parts are the exact amendment locations: Clause 2, 8.2, and 9.3.

SLOVENSKI STANDARD
01-oktober-2026
Vroče in hladno valjani neprevlečeni izdelki večfaznih jekel za hladno oblikovanje -
Tehnični dobavni pogoji - Dopolnilo A1
Hot rolled and cold rolled non-coated products of multiphase steels for cold forming -
Technical delivery conditions
Warmgewalzte und kaltgewalzte Flacherzeugnisse ohne Überzug aus
Mehrphasenstählen zum Kaltumformen - Technische Lieferbedingungen
Produits plats non revêtus laminés à chaud et laminés à froid en aciers en aciers
multiphases pour formage à froid - Conditions techniques de livraison
Ta slovenski standard je istoveten z: EN 10338:2025/prA1
ICS:
77.140.50 Ploščati jekleni izdelki in Flat steel products and semi-
polizdelki products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
EN 10338:2025
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
August 2026
ICS 77.140.50
English Version
Hot rolled and cold rolled non-coated products of
multiphase steels for cold forming - Technical delivery
conditions
Produits plats non revêtus laminés à chaud et laminés Warmgewalzte und kaltgewalzte Flacherzeugnisse
à froid en aciers en aciers multiphases pour formage à ohne Überzug aus Mehrphasenstählen zum
froid - Conditions techniques de livraison Kaltumformen - Technische Lieferbedingungen
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC
459/SC 9.
This draft amendment A1, if approved, will modify the European Standard EN 10338:2025. If this draft becomes an amendment,
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
this amendment into the relevant national standard without any alteration.

This draft amendment was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a Europ
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