Mechanical joining - Destructive testing of joints - Specimen dimensions and test procedure for cross-tension testing of single joints

ISO 16237:2015 specifies the geometry of the test specimens and the method for the cross-tension testing of single mechanical joints on single-lap test specimens up to a single sheet thickness of 4,5 mm. The term "sheet", as used in this International Standard, includes extrusions and cast materials. The purpose of the cross-tension test is to determine the mechanical characteristics and the failure types of the joints made with different joining methods. ISO 16237:2015 does not apply to civil engineering applications such as metal building and steel construction which are covered by other applicable standards.

Assemblage mécanique — Essais destructifs des soudures — Dimensions des éprouvettes et mode opératoire d'essai de traction sur éprouvettes en croix

General Information

Status
Published
Publication Date
21-Apr-2015
Parallel Committee
ISO/TC 2 - Fasteners
Current Stage
9060 - Close of review
Completion Date
04-Mar-2031

Overview

ISO 16237:2015 specifies specimen geometry and a standardized test procedure for cross‑tension testing of single mechanical joints (single‑lap specimens) for sheet materials up to 4.5 mm thickness. The standard defines how to perform destructive cross‑tension tests to determine joint mechanical characteristics (e.g., maximum force) and classify failure modes for a range of joining methods. The term “sheet” also includes extrusions and cast materials. ISO 16237:2015 excludes civil engineering applications covered by other standards.

Key topics and requirements

  • Specimen dimensions (see Table 1 in the standard):
    • Specimen width: 50 mm
    • Specimen length: 150 mm
    • Hole distance (center-to-center): 100 ± 0.2 mm
    • Hole diameter: 20 mm
    • Free clamping length: 54 mm
  • Test equipment:
    • Use a tensile testing machine verified per ISO 7500‑1.
    • Simultaneous measurement and recording of force and displacement (crosshead displacement or direct specimen measurement).
    • If crosshead is used, correct for machine stiffness.
  • Test procedure parameters:
    • Crosshead separation rate: ≤ 10 mm/min, constant during the test.
    • Perform tests at room temperature until joint failure.
    • Record characteristic values: Fmax (maximum force), displacements at Fmax, at 0.3·Fmax, and at fracture.
  • Failure classification:
    • Annex A provides normative drawings and descriptions of typical failure modes for joining methods such as rivets, clinching, screws, self‑piercing and blind rivets, and lock bolts (e.g., rivet pull‑out, shank fracture, neck fracture, thread stripping).
  • Test report requirements:
    • Mandatory items include reference to ISO 16237:2015, examiner, joining process and fasteners, materials, specimen dimensions (t1/t2), test equipment and settings, measurement method, force–displacement diagram, statistical results, failure mode and any deviations.

Practical applications and users

ISO 16237:2015 is used to evaluate the strength and failure behaviour of single mechanical joints in:

  • Automotive and aerospace manufacturing (prototype and production joint validation)
  • Fastener and joining‑technology suppliers (product development)
  • Materials and mechanical testing laboratories (quality control and certification)
  • OEM quality and R&D teams assessing joining processes such as clinching, riveting, and bolting

The standard helps compare joining methods, optimize joint design, and support supplier specifications by providing repeatable, comparable cross‑tension test results.

Related standards

  • ISO 7500‑1 - Verification of static uniaxial testing machines (force measurement)
  • ISO 2768‑1 - General tolerances for linear and angular dimensions
  • ISO 14272 - Cross‑tension testing of resistance spot and embossed projection welds

Keywords: ISO 16237:2015, cross‑tension testing, mechanical joining, specimen dimensions, destructive testing, joint failure modes, tensile testing machine, single‑lap specimen.

Standard

ISO 16237:2015 - Mechanical joining -- Destructive testing of joints -- Specimen dimensions and test procedure for cross-tension testing of single joints

English language
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Frequently Asked Questions

ISO 16237:2015 is a standard published by the International Organization for Standardization (ISO). Its full title is "Mechanical joining - Destructive testing of joints - Specimen dimensions and test procedure for cross-tension testing of single joints". This standard covers: ISO 16237:2015 specifies the geometry of the test specimens and the method for the cross-tension testing of single mechanical joints on single-lap test specimens up to a single sheet thickness of 4,5 mm. The term "sheet", as used in this International Standard, includes extrusions and cast materials. The purpose of the cross-tension test is to determine the mechanical characteristics and the failure types of the joints made with different joining methods. ISO 16237:2015 does not apply to civil engineering applications such as metal building and steel construction which are covered by other applicable standards.

ISO 16237:2015 specifies the geometry of the test specimens and the method for the cross-tension testing of single mechanical joints on single-lap test specimens up to a single sheet thickness of 4,5 mm. The term "sheet", as used in this International Standard, includes extrusions and cast materials. The purpose of the cross-tension test is to determine the mechanical characteristics and the failure types of the joints made with different joining methods. ISO 16237:2015 does not apply to civil engineering applications such as metal building and steel construction which are covered by other applicable standards.

ISO 16237:2015 is classified under the following ICS (International Classification for Standards) categories: 25.160.40 - Welded joints and welds. The ICS classification helps identify the subject area and facilitates finding related standards.

ISO 16237:2015 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


INTERNATIONAL ISO
STANDARD 16237
First edition
2015-05-01
Mechanical joining — Destructive
testing of joints — Specimen
dimensions and test procedure for
cross-tension testing of single joints
Assemblage mécanique — Essais destructifs des soudures —
Dimensions des éprouvettes et mode opératoire d’essai de traction sur
éprouvettes en croix
Reference number
©
ISO 2015
© ISO 2015
All rights reserved. Unless otherwise specified, 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
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2015 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test specimens and types of tests . 2
5 Test equipment and test procedure . 3
6 Failure mode . 4
7 Test report . 5
Annex A (normative) Types of joint failure . 6
Bibliography .12
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 on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT), see the following URL: Foreword — Supplementary information.
The committee responsible for this document is ISO/TC 44, Welding and allied processes, Subcommittee
SC 6, Resistance welding and allied mechanical joining.
iv © ISO 2015 – All rights reserved

Introduction
This International standard specifies the testing procedure and the specimen shapes for cross-tension
testing of mechanical joints. Items to be reported after testing are the cross tension strength as well as
the fracture modes, which are given as drawings as the type of joint failure. The International Standard
also includes normative references, terms and definitions and an example for a test report.
INTERNATIONAL STANDARD ISO 16237:2015(E)
Mechanical joining — Destructive testing of joints —
Specimen dimensions and test procedure for cross-tension
testing of single joints
1 Scope
This International Standard specifies the geometry of the test specimens and the method for the cross-
tension testing of single mechanical joints on single-lap test specimens up to a single sheet thickness of
4,5 mm.
The term “sheet”, as used in this International Standard, includes extrusions and cast materials.
The purpose of the cross-tension test is to determine the mechanical characteristics and the failure
types of the joints made with different joining methods.
This International Standard does not apply to civil engineering applications such as metal building and
steel construction which are covered by other applicable standards.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 2768-1, General tolerances — Part 1: Tolerances for linear and angular dimensions without individual
tolerance indications
ISO 7500-1, Metallic materials — Verification of static uniaxial testing machines — Part 1: Tension/
compression testing machines — Verification and calibration of the force-measuring system
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
cross-tension strength
CTS
F
max
maximum force, recorded in the test
3.2
cross-tension force
F
force, recorded in the test
3.3
crosshead displacement
s
disp
...

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