ISO 6362-3:2022

Wrought aluminium and aluminium alloys — Extruded rods/bars, tubes and profiles — Part 3: Tolerances on form and dimensions for extruded rectangular bars

This document specifies the tolerances on dimensions and shape of wrought aluminium and aluminium alloy extruded rectangular bars, having thicknesses in the range from 2 mm up to 240 mm and widths in the range from 10 mm up to 600 mm. It is applicable to extruded rectangular bars.

Aluminium et alliages d'aluminium corroyés — Barres, tubes et profilés filés — Partie 3: Tolérances sur forme et dimensions pour barres rectangulaires filées

General Information

• Status: Published
• Publication Date: 30-Jun-2022
• ICS: 77.150.10 - Aluminium products
• Technical Committee: ISO/TC 79/SC 6 - Wrought aluminium and aluminium alloys
• Drafting Committee: ISO/TC 79/SC 6 - Wrought aluminium and aluminium alloys
• Current Stage: 6060 - International Standard published
• Start Date: 01-Jul-2022
• Due Date: 05-Apr-2023
• Completion Date: 01-Jul-2022

Relations

• Revises: ISO 6362-3:2012 - Wrought aluminium and aluminium alloys — Extruded rods/bars, tubes and profiles — Part 3: Extruded rectangular bars — Tolerances on shape and dimensions
• Effective Date: 23-Apr-2020

Overview

ISO 6362-3:2022 - "Wrought aluminium and aluminium alloys - Extruded rods/bars, tubes and profiles - Part 3" - specifies tolerances on form and dimensions for extruded rectangular bars. It applies to extruded rectangular aluminium and aluminium-alloy bars with thicknesses from 2 mm to 240 mm and widths from 10 mm to 600 mm. This fourth edition (2022) updates alloy groupings and corrects editorial errors from the 2012 edition.

Key topics and technical requirements

The standard defines measurable dimensional and shape requirements for quality control and acceptance:

• Dimensional tolerances (width & thickness)

  • Separate tolerance tables for Alloy Group I and Alloy Group II covering combinations of width (b) and thickness (t).
  • Tolerances vary with size; for example, narrow bars (10–18 mm width) have tighter limits than wide sections.

• Corner radii

  • Maximum corner radii specified by thickness ranges (e.g., Group I: 0.6 mm max for t ≤ 10 mm; Group II: up to 5.0 mm for t ≤ 240 mm).

• Fixed-length tolerances and squareness of cut ends

  • Permissible fixed-length tolerances given for lengths L ≤ 2 000 mm, up to 8 000 mm, with squareness of cut ends required to be within half the fixed-length tolerance.

• Form tolerances (measurements are made with bar supported on a horizontal base plate)

  • Flatness (convexity/concavity) - allowable deviation e by width ranges.
  • Straightness - limits per 1 000 mm and in any 300 mm section.
  • Twist - allowable twist per 1 000 mm and per total length segments.
  • Squareness (cross-section) - maximum deviation Z relative to thickness.

• Materials and alloy grouping

  • Alloys are listed (see ISO 6362-7) and divided into Group I and Group II to reflect manufacturing difficulty; some specific alloys were added in the 2022 update.

• Temper exceptions

  • Shape tolerances do not apply to tempers O, H111, H112 and TX510 type tempers.

Applications and users

ISO 6362-3:2022 is used by:

• Extrusion manufacturers for production tolerance control and process setup.
• Quality inspectors and testing labs to verify compliance with dimensional/form tolerances.
• Procurement and purchasing to specify acceptance criteria in contracts.
• Design and fabrication engineers who require toleranced sections for assemblies and machining allowances.
• Standards compliance teams for regulatory and contractual conformity.

Keywords: ISO 6362-3:2022, extruded rectangular bars, wrought aluminium, tolerances, flatness, straightness, twist, corner radii, alloy groups.

Related standards

• ISO 6362-1 - Technical conditions for inspection and delivery.
• ISO 6362-7 - Chemical composition and alloy listings referenced in this document.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 6362-3
Fourth edition
2022-07
Wrought aluminium and aluminium
alloys — Extruded rods/bars, tubes
and profiles —
Part 3:
Tolerances on form and dimensions
for extruded rectangular bars
Aluminium et alliages d'aluminium corroyés — Barres, tubes et
profilés filés —
Partie 3: Tolérances sur forme et dimensions pour barres
rectangulaires filées
Reference number
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Materials . 1
5 Tolerances on form and dimensions .2
5.1 Dimensional tolerances . 2
5.1.1 Tolerances on width and thickness. 2
5.1.2 Corner radii . 3
5.1.3 Fixed-length tolerances . 3
5.1.4 Squareness of cut ends . 4
5.2 Form tolerances . 4
5.2.1 General . 4
5.2.2 Flatness tolerances . 4
5.2.3 Straightness tolerances . 5
5.2.4 Twist tolerances . 5
5.2.5 Squareness tolerances . 6
Bibliography . 8
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO’s adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 79, Light metals and their alloys,
Subcommittee SC 6, Wrought aluminium and aluminium alloys.
This fourth edition cancels and replaces the third edition (ISO 6362-3:2012), which has been technically
revised. The main changes are as follows:
— in Clause 4, Table 1 has been separated into Table 1 and Table 2 by alloy group;
— in Clause 4, alloys 3203 and 6026 have been added to Table 1 and alloy 2033 has been added to
Table 2;
— errors have been corrected and expressions modified throughout.
A list of all parts in the ISO 6362 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
INTERNATIONAL STANDARD ISO 6362-3:2022(E)
Wrought aluminium and aluminium alloys — Extruded
rods/bars, tubes and profiles —
Part 3:
Tolerances on form and dimensions for extruded
rectangular bars
1 Scope
This document specifies the tolerances on dimensions and shape of wrought aluminium and aluminium
alloy extruded rectangular bars, having thicknesses in the range from 2 mm up to 240 mm and widths
in the range from 10 mm up to 600 mm.
It is applicable to extruded rectangular bars.
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.
ISO 6362-1, Wrought aluminium and aluminium alloys — Extruded rods/bars, tubes and profiles — Part 1:
Technical conditions for inspection and delivery
3 Terms and definitions
For the purposes of this document, the terms and de
...