EN ISO 14272:2016

Resistance welding - Destructive testing of welds - Specimen dimensions and procedure for cross tension testing of resistance spot and embossed projection welds (ISO 14272:2016, Corrected version 2016-09-01)

ISO 14272:2016 specifies specimen dimensions and a testing procedure for the cross tension testing of spot and projection welds in overlapping sheets in any metallic material of thickness 0,5 mm to 3 mm, where the welds have a maximum diameter of 7√t (where t is the sheet thickness in mm).
The object of cross tension testing is to determine the tensile force that the test specimen can sustain.

Widerstandsschweißen - Zerstörende Prüfung von Schweißverbindungen - Probenmaße und Verfahren für die Kopfzugprüfung an Widerstandspunkt- und Buckelschweißungen mit geprägten Buckeln (ISO 14272:2016, korrigierte Fassung 2016-09-01)

Diese Internationale Norm legt die Probenmaße und ein Verfahren für die Kopfzugprüfung an Punkt  und Buckelschweißungen an überlappenden Blechen aus beliebigen metallischen Werkstoffen mit einer Blechdicke von 0,5 mm bis 3 mm fest, wobei die Schweißverbindungen einen maximalen Durchmesser von 7√t haben (dabei ist t die Blechdicke in mm).
Das Ziel der Kopfzugprüfung ist die Bestimmung der Zugkraft, die die Probe ertragen kann.

Soudage par résistance - Essais destructifs des soudures - Dimensions des éprouvettes et mode opératoire pour l'essai de traction en croix des soudures par résistance par points et par bossages (ISO 14272:2016, Version corrigée 2016-09-01)

ISO 14272:2016 spécifie les dimensions des éprouvettes et un mode opératoire pour les essais de traction des soudures par résistance par points et par bossages réalisées sur des tôles soudées par recouvrement, dans tout matériau métallique d'une épaisseur de 0,5 mm à 3 mm, où les soudures ont un diamètre maximal de 7√t (où t est l'épaisseur de la tôle, en millimètres).
L'essai de traction sur des éprouvettes en croix vise à déterminer la charge de rupture qu'une éprouvette peut supporter.

Mere vzorcev in postopek za križno natezno preskušanje uporovnih točkovnih in bradavičnih zvarov (ISO 14272:2016)

Ta mednarodni standard določa mere vzorcev in postopek za križno natezno preskušanje točkovnih in bradavičnih zvarov, v prekrivajočih se slojih, v katerem koli kovinskem materialu debeline 0,5 do 3 mm, pri čemer je največji premer zvarov 7√t (t je debelina sloja v mm).
Cilj križno nateznega preskušanja je določiti natezno silo, ki jo lahko preskusni vzorec prenese.

General Information

• Status: Published
• Publication Date: 22-Mar-2016
• Withdrawal Date: 29-Sep-2016
• ICS: 25.160.40 - Welded joints and welds
• Technical Committee: CEN/TC 121 - Welding
• Drafting Committee: CEN/TC 121/WG 21 - Testing of welds
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 23-Mar-2016
• Completion Date: 23-Mar-2016
• Ref Project: SIST EN ISO 14272:2016 - Specimen dimensions and procedure for cross tension testing resistance spot and embossed projection welds (ISO 14272:2016)

Relations

• Replaces: EN ISO 14272:2001 - Specimen dimensions and procedure for cross tension testing resistance spot and embossed projection welds (ISO 14272:2000)
• Effective Date: 20-Jun-2012

Overview

EN ISO 14272:2016 - "Resistance welding - Destructive testing of welds - Specimen dimensions and procedure for cross tension testing of resistance spot and embossed projection welds" defines the specimen geometry and test procedure for measuring the tensile capacity of spot and projection welds in overlapping metallic sheets. The standard applies to sheet thicknesses from 0.5 mm to 3 mm and to welds with a maximum diameter of 7√t (t = sheet thickness in mm). The primary objective of the cross tension test is to determine the maximum tensile force (cross tension strength, CTS) the welded joint can sustain.

Key Topics and Requirements

• Scope and applicability: Spot and embossed projection welds in overlapping sheets, metallic materials, t = 0.5–3 mm, weld diameter ≤ 7√t.
• Specimen geometry: Test specimen consists of two rectangular coupons welded together; weld must be centered with a tolerance of ±1 mm.
• Clamping options:
  • Specimens with drilled holes (for clamping bolts) or
  • Specimens without holes using a hydraulic clamping system (no holes required).
• Test equipment: Tensile testing machines must meet ISO 7500-1; force measurement accuracy ≤ ±1%.
• Procedure:
  • Clamp assembled specimen and apply tensile load until failure.
  • Record cross tension force continuously; determine CTS as the maximum force.
  • Tests performed at room temperature.
  • Produce a load–displacement diagram for each test.
• Reporting: Test reports must reference ISO 14272:2016 and include welding process, welding conditions/equipment, material and condition, specimen dimensions, individual and statistical CTS values (kN), failure mode descriptions (plug, interfacial, etc.), weld diameters and any special remarks.
• Fixtures and accessories: Illustrative welding jigs and clamping devices (including hydraulic clamps) and anti-slip die treatments are described.

Applications and Users

EN ISO 14272:2016 is used by:

• Quality assurance and metallurgical laboratories performing destructive weld testing.
• Manufacturers in automotive, aerospace, appliance, and general fabrication sectors that rely on resistance spot and projection welding.
• Welding engineers and R&D groups validating joint strength, developing welding procedures, or comparing electrode/jig configurations.
• Certification bodies and standards committees for compliance testing and product qualification.

Practical benefits include consistent, repeatable measurement of joint tensile performance (CTS), standardized specimen preparation, and uniform reporting for comparative and contractual testing.

Related Standards

• ISO 7500-1 - Verification of static uniaxial testing machines (tension/compression).
• ISO 17677-1 - Resistance welding vocabulary (spot, projection and seam welding).
• ISO 14329 - Destructive tests - failure types and geometric measurements for resistance welds.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2016
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SIST EN ISO 14272:2002
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Specimen dimensions and procedure for cross tension testing resistance spot and
embossed projection welds (ISO 14272:2016)
Probenmaße und Verfahren für die Kopfzugprüfung an Widerstandspunkt- und
Buckelschweißungen mit geprägten Buckeln (ISO 14272:2016)
Dimensions des éprouvettes et mode opératoire pour l'essai de traction sur éprouvettes
en croix des soudures par résistance par points et par bossages (ISO 14272:2016)
Ta slovenski standard je istoveten z: EN ISO 14272:2016
ICS:
25.160.40 Varjeni spoji in vari Welded joints and welds
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 14272
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2016
EUROPÄISCHE NORM
ICS 25.160.40 Supersedes EN ISO 14272:2001
English Version
Resistance welding - Destructive testing of welds -
Specimen dimensions and procedure for cross tension
testing of resistance spot and embossed projection welds
(ISO 14272:2016)
Soudage par résistance - Essais destructifs des Widerstandsschweißen - Zerstörende Prüfung von
soudures - Dimensions des éprouvettes et mode Schweißverbindungen - Probenmaße und Verfahren
opératoire pour l'essai de traction en croix des für die Kopfzugprüfung an Widerstandspunkt- und
soudures par résistance par points et par bossages Buckelschweißungen mit geprägten Buckeln (ISO
(ISO 14272:2016) 14272:2016)
This European Standard was approved by CEN on 5 December 2015.

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. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14272:2016 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 14272:2016) has been prepared by IIW International Institute of Welding in
collaboration with Technical Committee CEN/TC 121 “Welding and allied processes” the secretariat of
which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by September 2016, and conflicting national standards
shall be withdrawn at the latest by September 2016.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document supersedes EN ISO 14272:2001.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 14272:2016 has been approved by CEN as EN ISO 14272:2016 without any modification.
INTERNATIONAL ISO
STANDARD 14272
Second edition
2016-03-01
Resistance welding — Destructive
testing of welds — Specimen
dimensions and procedure for cross
tension testing of resistance spot and
embossed projection welds
Soudage par résistance — Essais destructifs des soudures —
Dimensions des éprouvettes et mode opératoire pour l’essai de
traction en croix des soudures par résistance par points et par
bossages
Reference number
ISO 14272:2016(E)
©
ISO 2016
ISO 14272:2016(E)
© ISO 2016, Published in Switzerland
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
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ii © ISO 2016 – All rights reserved

ISO 14272:2016(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test specimen . 1
5 Test equipment and testing procedure . 3
6 Test report . 6
Annex A (informative) Exploded view of a hydraulic clamping device . 8
Bibliography .10
ISO 14272:2016(E)
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
electro
...