oSIST prEN 10048:2026

• Abstract:

  This document specifies tolerances on dimensions and shape for hot rolled uncoated narrow strip and cut lengths of non-alloy and alloy steel grades in accordance with Table 1.; It is usually produced in thickness of 0,8 mm up to and including 16 mm and generally has a rolled width less than 600 mm but is also produced in rolled widths up to and including 720 mm.; Hot-rolled narrow strip has a symmetrical thickness profile with tight crown tolerances and therefore cannot be compared to slit wide strip.; This document also applies to hot-rolled strip for cold rolling.; Table 1 — Field of application; [...table not represented...]; This document can also be used for other steels, e.g.: steels from standards not mentioned in Table 1.; This document does not apply to:; — continuously hot-rolled wide strip and plate/sheet cut from wide strip of non-alloy and alloy steels and narrow strip obtained by slitting wide strip (EN 10051);; — hot-rolled patterned steel strip and plate/sheet cut from wide strip (see EN 10363);; — uncoated or electrolytically coated cold rolled sheet and strip (see EN 10131);; — hot-dip coated steel sheet and strip (EN 10143).

• Status: Not Published
• Public Enquiry End Date: 09-Oct-2026
• ICS: 77.140.45 - Non-alloyed steels
• 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: 12-Aug-2026
• Due Date: 30-Dec-2026
• Mandate: M/BC/CEN/89/10 - ECISS - 3rd programme
• Ref Project: prEN 10048 - Hot-rolled narrow steel strip - Tolerances on dimensions and shape

• Revises: SIST EN 10048:1998 - Hot rolled narrow steel strip - Tolerances on dimensions and shape
• Effective Date: 22-Oct-2025

Overview

oSIST prEN 10048:2026: Hot-rolled narrow steel strip - Tolerances on dimensions and shape is a draft European Standard developed by the Slovenian Institute for Standardization (SIST). This standard defines the tolerances on dimensions and shape for hot-rolled uncoated narrow steel strip and cut lengths of non-alloy and alloy steel grades. It covers products typically produced in thicknesses from 0.8 mm up to and including 16 mm – generally with rolled widths under 600 mm, but also up to 720 mm for certain applications. The document specifies requirements that ensure consistent quality and interoperability across manufacturing and end-use applications, and also extends its application to hot-rolled strip material intended for subsequent cold rolling processes.

Key Topics

• Scope and Applicability: Specifies dimensional and shape tolerances for hot-rolled uncoated narrow strip and cut lengths of specified steel grades.
• Product Range:
  • Thickness: 0.8 mm to 16 mm
  • Width: Less than 600 mm, or up to 720 mm as permitted
  • Applies equally to materials for cold rolling
• Tolerances:
  • Tolerances on thickness, including crown (symmetrical thickness profile)
  • Tolerances on width (for both mill and trimmed edges)
  • Tolerances on cut lengths and shape (edge camber and squareness)
• Steel Grades: Applies to a wide range of both non-alloy and alloy grades, referenced according to several renowned European and international steel standards.
• Exclusions: Not applicable to wide strips, patterned steel strip, cold-rolled or coated products, as specified in related standards.
• Ordering Requirements: Details exact information purchasers must supply, including dimensions, edge types, steel grade, and possible options for tighter tolerances or special properties.

Applications

Adherence to oSIST prEN 10048:2026 ensures that hot-rolled narrow steel strip products meet clearly defined dimensional and shape tolerances, critical for industries where consistent material properties and process reliability are essential. Typical applications include:

• Automotive Manufacturing: For forming components that require uniform thickness and surface finish, offering superior process control in downstream operations.
• Construction and Structural Engineering: Used in load-bearing or safety-critical parts, where precise dimensions are necessary for structural stability.
• Pressure Vessels and Gas Cylinders: Ensures materials for pressure applications meet strict tolerance and quality requirements.
• Cold Rolling Feedstock: Sets dimensional groundwork for strips to be further processed via cold rolling into precision products.
• Machinery and Tools: Supplies steels conforming with tight tolerances essential for high-performance mechanical components.

Manufacturers, processors, and end-users benefit from enhanced predictability in manufacturing, efficient supply chain integration, and minimized risk of material non-compliance.

Related Standards

For comprehensive steel product specifications and further details on products outside the scope of oSIST prEN 10048:2026, reference the following related standards:

• EN 10051: Hot-rolled wide strip and plate/sheet cut from wide strip
• EN 10363: Hot-rolled patterned steel strip and plate/sheet cut from wide strip
• EN 10131: Cold-rolled uncoated or electrolytically coated steel sheet and strip
• EN 10143: Continuously hot-dip coated steel sheet and strip
• Other EN/ISO Steel Standards: EN ISO 683 series, EN 10025 series, EN 10028, EN 10111, EN 10132, and more, covering specific steel grades and product types

Compliance with oSIST prEN 10048:2026 supports consistent product quality and performance across European and international markets, supporting best practices in the manufacture and application of hot-rolled narrow steel strip.

SLOVENSKI STANDARD
01-oktober-2026
Vroče valjani ozki jekleni trakovi - Tolerance mer in oblike
Hot-rolled narrow steel strip - Tolerances on dimensions and shape
Warmgewalzter Bandstahl - Grenzabmaße und Formtoleranzen
Bandes étroites laminées à chaud - Tolérances de dimensions et de forme
Ta slovenski standard je istoveten z: prEN 10048
ICS:
77.140.45 Nelegirana jekla Non-alloyed steels
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
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2026
ICS 77.140.45 Will supersede EN 10048:1996
English Version
Hot-rolled narrow steel strip - Tolerances on dimensions
and shape
Bandes étroites laminées à chaud - Tolérances de Warmgewalzter Bandstahl - Grenzabmaße und
dimensions et de forme Formtoleranzen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 459/SC 3.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard 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 European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 10048:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 6
3 Terms and definitions . 6
4 Information to be supplied by the purchaser . 7
4.1 Mandatory information . 7
4.2 Options . 7
4.3 Examples . 8
5 Delivery condition . 8
6 Tolerances on dimensions . 8
6.1 General. 8
6.2 Tolerances on thickness . 9
6.3 Tolerances for narrow strip intended for cold rolling . 11
6.3.1 Variations on thickness . 11
6.3.2 Tolerances on crown . 11
6.4 Tolerances on width . 11
6.5 Length and tolerances on length for cut lengths . 12
7 Tolerances on shape . 13
7.1 Edge camber . 13
7.2 Tolerances on squareness . 13
8 Measurements . 13
8.1 Thickness . 13
8.2 Width . 14
8.3 Edge camber . 14
9 Packaging . 14
Annex A (normative) Categories of hot forming resistance at elevated temperatures and
assignment of steels . 15
A.1 Steel grades and assigned categories . 15
Annex B (informative) Methods for the determination of the hot forming resistance at elevated
temperatures . 21
B.1 Introduction . 21
B.2 Method based on the literature given in the bibliography . 21
B.3 Method for the determination of the hot forming resistance at elevated temperatures and
strain rates – Extension of DIN 50106 . 21
B.3.1 General. 21
B.3.2 Additional requirements for the test setup . 22
B.3.3 Additional requirements for the test procedure . 23
B.3.4 Test report (additional information) . 24
Bibliography . 25

European foreword
This document (prEN 10048:2026) has been prepared by Technical Committee CEN/TC 459/SC 3
“Structural steels other than reinforcements”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 10048:1996.
— introduction of concept of deformation resistance at elevated temperatures;
— tolerances on thickness are given in normal and fine tolerances;
— extension to include strip with rolled width up to and including 720 mm that has finer tolerance
requirements than specified in EN 10051;
— editorial update.
1 Scope
This document specifies tolerances on dimensions and shape for hot rolled uncoated narrow strip and
cut lengths of non-alloy and alloy steel grades in accordance with Table 1.
It is usually produced in thickness of 0,8 mm up to and including 16 mm and generally has a rolled width
less than 600 mm but is also produced in rolled widths up to and including 720 mm.
Hot-rolled narrow strip has a symmetrical thickness profile with tight crown tolerances and therefore
cannot be compared to slit wide strip.
This document also applies to hot-rolled strip for cold rolling.
Table 1 — Field of application
Steel grades according to:
Product
(but not limited to)
EN ISO 683-1 and
Steels for quenching and tempering
EN ISO 683–2
EN ISO 683-3 Case hardening steels
EN ISO 683-4 Free-cutting steels
EN ISO 683-5 Nitriding steels
EN ISO 683-17 Ball and roller bearing steels
EN ISO 4957 Tool steels
EN 10025-2 to EN 10025−6 Structural steels
Narrow strip
EN 10028-2 to EN 10028−6 Steels for pressure purposes
EN 10089/ISO 683-6 Hot rolled steels for quenched and tempered springs
EN 10111 Low carbon steel sheet and strip for cold forming
EN 10120 Steel sheet and strip for welded gas cylinders
EN 10132 Cold narrow steel strip for heat treatment
EN 10149-2 and EN 10149−3 High yield strength steels for cold forming
EN 10207 Steels for simple pressure vessels
EN 10338 Non-coated products of multiphase steels for cold forming

This document can also be used for other steels, e.g.: steels from standards not mentioned in Table 1.
This document does not apply to:
— continuously hot-rolled wide strip and plate/sheet cut from wide strip of non-alloy and alloy steels
and narrow strip obtained by slitting wide strip (EN 10051);
— hot-rolled patterned steel strip and plate/sheet cut from wide strip (see EN 10363);
— uncoated or electrolytically coated cold rolled sheet and strip (see EN 10131);
— hot-dip coated steel sheet and strip (EN 10143).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 10020, Definition and classification of grades of steel
EN 10079, Definition of steel products
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 10020 and EN 10079 and the
following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
3.1
non-alloy and alloy steels
steels, non-alloy and alloy, which follow the information and requirements outlined in EN 10020
3.2
narrow strip
steels in narrow strip and cut lengths, which follow the information, requirements and test methods
outlined in EN 10079
Note 1 to entry: This strip is defined in EN 10079 with width less than 600 mm. Some narrow strip mills have the
capability to produce strip with rolled widths up to and including 720 mm.
3.3
crown
difference in thickness between one of the edges and the centre of a rolled product
3.4
resistance to hot forming σ at elevated temperature
dr
is defined as the stress in MPa to cause a certain change in shape at a specified temperature, specified
strain φ and specified strain rate φ
pkt
Note 1 to entry: The hot forming resistance significantly influences the thickness, width and tolerances on crown
that can be technically achieved.
Note 2 to entry: For this document the specified temperature T = 900 °C, the specified strain φ = 0,2 and the
specified strain rate φpkt 10 s-1.
4 Information to be supplied by the purchaser
4.1 Mandatory information
The following information shall be supplied by the purchaser at the time of enquiry and order:
a) the quantity to be delivered;
b) designation of the product (narrow strip, cut length from narrow strip);
c) number of this dimensional document (EN 10048);
d) nominal thickness in mm with the letter N for normal tolerances or F for fine tolerances;
e) width in mm
in case of uncut strip with the letter M for mill edges and
in case of cut length with the letter T for trimmed edges or with the letter M for mill edges;
f) nominal length in mm for cut length from narrow strip;
g) the surface finish required, see 5.3;
h) the standard of the technical delivery condition, the steel grade and if necessary further properties of
the steel grade;
i) the category A, B, C or D of hot forming resistance according to Table A.1 and if the hot forming
resistance of the steel grade is not defined in Table A.1, an alternative category to Table A.1 must be
specified, the category shall be agreed at the time of enquiry and order.
4.2 Options
A number of options are specified in this document and listed below. If the purchaser does not indicate
his wish to implement any of these options, the supplier shall at least supply in accordance with the basic
specification of this document (see 4.1):
1. if the total thickness tolerances shall be all over or all under, see 6.2;
2. if the width tolerance shall be symmetrical or all minus, see 6.4; Table 8, footnote a and Table 9,
footnote a;
3. tighter tolerances on width for narrow strip with trimmed edges, see 6.4, Table 9, footnote b;
4. for strip if trimmed edges are required the letter T after the width;
5. if narrow strip is intended for cold rolling, see 6.3;
6. if cut lengths are required with fine length tolerances, see 6.5;
7. in case of narrow strip, diameter and weight of the coils, see 5.1.
4.3 Examples
Example 1: 50 t of hot rolled narrow strip in coils according to this document with nominal thickness of 2,5 mm,
normal thickness tolerances, nominal width of 500 mm, with mill edges (M) suitable for cold rolling (Option 5) of
steel S235JR (1.0038) as specified in EN 10025-2 with hot forming category A:
50 t strip EN 10048 – 2,5 N x 500 M – Option 5
steel EN 10025-2 – S235JR - A
Example 2: 1000 cut lengths of hot rolled narrow strip according to this document with nominal thickness of
2,0 mm, fine thickness tolerances, nominal width 450 mm, with trimmed edges (T) in length of 4 000 mm to fine
length tolerances (F) of steel 42CrMo4 (1.7227) as specified in EN ISO 683-2 with hot forming category C:
1 000 cut lengths EN 10048 – 2,0 F x 450 T x 4 000F
steel EN ISO 683-2 – 1.7227 - C
5 Delivery condition
5.1 Hot rolled narrow strip covered by this document may be delivered:
— in coils, the diameter and weight of which may be agreed at the time of ordering (see Option 7), or
— in cut lengths (when the coils have been decoiled and cut to lengths).
5.2 Hot-rolled narrow strip is usually supplied with mill edges (M). Delivery with trimmed edges (T)
shall be by special agreement (see Option 4).
Hot-rolled cut lengths are supplied with mill (M) or trimmed edges (T).
5.3 Products covered by this European Standard are usually supplied in the as rolled condition. By
agreement the products may also be supplied mechanically or chemically descaled (pickled), oiled and/or
heat-treated.
5.4 Hot rolled unpickled narrow strip is usually supplied with end tongues at the discretion of the
manufacturer but in case of trimmed and/or pickled material the end tongues are removed.
6 Tolerances on dimensions
6.1 General
This document specifies four different categories, which represent ranges of hot forming resistance at
elevated temperatures during the hot rolling process, see Table 2. For the most usual grades supplied as
narrow strip the assignment to the category of hot forming resistance is given in Annex A, Table A.1.
If a steel grade is not listed in Table A.1 or if another category than the one specified in Table A.1 is
required, the appropriate category of hot forming resistance shall be agreed at the time of enquiry and
order. Potential methods for assessing the hot forming resistance are provided in informative Annex B.
Table 2 — Tolerance categories (for information)
Description Resistance to hot forming σdr Categories
at elevated temperature of 900 °C,
strain rate φ 10 s-1, strain φ = 0,2
pkt
Steels with normal deformation σ ≤ 165 MPa A
dr
resistance at elevated
temperatures
Steels with increased 165 MPa < σ ≤ 180 MPa B
dr
deformation resistance at
elevated temperature
Steels with high deformation 180 MPa < σdr ≤ 200 MPa C
resistance at elevated
temperature
Steels with very high > 200 MPa D
σdr
deformation resistance at
elevated temperature
6.2 Tolerances on thickness
The tolerances on thickness, which include crown, are given in Tables 3 to 6. These tolerances are
assigned to the categories A, B, C and D according to Table 2.
Thickness tolerances can be either all plus or all minus tolerances (see option 1) by keeping the full range
of the tolerance from Tables 3 to 6 (disposition of tolerances) if agreed at the time of enquiry and order.
Table 3 — Tolerances on thickness for narrow strip and cut lengths of steels with normal
deformation resistance at elevated temperatures —category A
Dimensions in millimetres
Nominal Tolerances on thickness for nominal
thickness widths
t 10 ≤ w < 600 (≤720)
normal tolerances fine tolerances
0,80 < t ≤ 2,0 ±0,10 ±0,05
2,0 < t ≤ 6,0 ±0,13 ±0,07
6,0 < t ≤ 10,0 ±0,16 ±0,09
10,0 < t ≤ 16,0 ±0,18 ±0,12
Table 4 —Tolerances on thickness for narrow strip and cut lengths of steels with increased
deformation resistance at elevated temperature —category B
Dimensions in millimetres
Nominal Tolerances on thickness for nominal
thickness widths
t 10 ≤ w < 600 (≤720)
normal tolerances fine tolerances
0,80 < t ≤ 2,0 ±0,11 ±0,055
2,0 < t ≤ 6,0 ±0,14 ±0,08
6,0 < t ≤ 10,0 ±0,18 ±0,10
10,0 < t ≤ 16,0 ±0,20 ±0,13
Table 5 — Tolerances on thickness for narrow strip and cut lengths of steels with high
deformation resistance at elevated temperature — category C
Dimensions in millimetres
Nominal Tolerances on thickness for nominal widths
thickness
t 10 ≤ w < 600 (≤720)
normal tolerances fine tolerances
0,80 < t ≤ 2,0 ±0,12 ±0,06
2,0 < t ≤ 6,0 ±0,16 ±0,085
6,0 < t ≤ 10,0 ±0,19 ±0,11
10,0 < t ≤ 16,0 ±0,22 ±0,14
Table 6 — Tolerances on thickness for narrow strip and cut lengths of steels with very high
deformation resistance at elevated temperature — category D
Dimensions in millimetres
Nominal Tolerances on thickness for nominal widths
thickness
t 10 ≤ w < 600 (≤720)
normal tolerances fine tolerances
0,80 < t ≤ 2,0 ±0,13 ±0,065
2,0 < t ≤ 6,0 ±0,17 ±0,09
6,0 < t ≤ 10,0 ±0,21 ±0,12
10,0 < t ≤ 16,0 ±0,24 ±0,16
6.3 Tolerances for narrow strip intended for cold rolling
If narrow strip is intended for cold rolling this shall be agreed between the manufacturer and purchaser
at the time of enquiry and order, see Option 5.
6.3.1 Variations on thickness
For narrow strip intended for cold rolling, the difference in thickness throughout one coil shall not
exceed:
— 0,14 mm for nominal thickness t ≤ 4 mm;
— 0,17 mm for nominal thickness 4 < t ≤ 8 mm;
— 0,20 mm for nominal thickness t > 8 mm.
Variations on thickness shall be gradual and shall not occur irregularly.
6.3.2 Tolerances on crown
The tolerances for narrow strip intended for cold rolling are assigned to the categories A, B, C and D
according to Table 2. The crown, i.e. the increase in thickness of the strip between two measuring points,
respectively 15 mm from the edge and the middle of the strip (see 8.1), shall not exceed the values given
in Table 7.
Table 7 — Tolerances on crown for narrow strip intended for cold rolling
Dimensions in millimetres
Category Nominal width of the narrow Tolerances on
strip crown
A w < 600 (≤720) 0 to 0,08
B w < 600 (≤720) 0 to 0,09
C w < 600 (≤720) 0 to 0,10
D w < 600 (≤720) 0 to 0,11
The crown shall be as regular and symmetrical as possible relat
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