EN 62739-2:2016

Test method for erosion of wave soldering equipment using molten lead-free solder alloy - Part 2: Erosion test method for metal materials with surface processing

IEC 62739-2:2016 provides an evaluating test method for the erosion of the metallic materials with surface processing intended to be used for lead-free wave soldering equipment as a solder bath and other components which are in contact with the molten solder. It aims at prevention of an accident or a fire by predicting a setup and life of a suitable maintenance cycle.

Verfahren zur Erosionsprüfung für Wellenlötausrüstungen bei Verwendung von geschmolzener, bleifreier Lotlegierung - Teil 2: Erosionsprüfverfahren für metallische Werkstoffe mit Oberflächenbehandlung

Méthode d'essai de l'érosion de l'équipement de brasage à la vague utilisant un alliage à braser sans plomb fondu - Partie 2: Méthode d'essai d'érosion de matériaux métalliques avec traitement de surface

L'IEC 62739-2:2016 décrit une méthode d'essai pour évaluer l'érosion des matériaux métalliques avec traitement de surface, destinés à être utilisés avec un bain de brasure par les équipements de brasage à la vague sans plomb, et l'érosion d'autres composants qui entrent en contact avec la brasure fondue. Elle vise à éviter les accidents ou les incendies en prévoyant la mise en place et la vie d'un cycle de maintenance adapté.

Preskusna metoda za opremo za valovno spajkanje, ki uporablja staljeno spajkalno zlitino brez svinca - 2. del: Metoda z erozijskim preskušanjem kovinskih materialov s površinsko obdelavo

Ta del standarda IEC 62739 zajema preskusno metodo za erozijo kovinskih materialov s površinsko obdelavo, ki so namenjeni uporabi z opremo za valovno spajkanje, ki uporablja staljeno spajkalno zlitino brez svinca, in drugimi komponentami, ki so v stiku s staljeno spajkalno zlitino. Namenjen je preprečevanju nesreče ali požara s predvidevanjem priprave in trajanja ustreznega cikla vzdrževanja.

General Information

• Status: Published
• Publication Date: 06-Oct-2016
• Withdrawal Date: 16-Aug-2019
• ICS: 31.190 - Electronic component assemblies
• ICS: 31.240 - Mechanical structures for electronic equipment
• Technical Committee: CLC/SR 91 - Electronics assembly technology
• Drafting Committee: IEC/TC 91 - IEC_TC_91
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 07-Oct-2016
• Completion Date: 07-Oct-2016
• Ref Project: SIST EN 62739-2:2017 - Test method for erosion of wave soldering equipment using molten lead-free solder alloy - Part 2: Erosion test method for metal materials with surface processing

Overview

EN 62739-2:2016 (IEC 62739-2:2016) specifies a repeatable erosion test method for metallic materials with surface processing that are used in lead-free wave soldering equipment - for example, solder baths and other components that contact molten solder. The standard defines how to simulate solder flow and measure metal loss (erosion) so manufacturers and process engineers can predict component life, set safe maintenance cycles, and reduce risks such as equipment failure, accidents or fires. The test uses a molten lead‑free solder alloy (per IEC 61190‑1‑3, e.g., Sn96.5Ag3Cu0.5) and records erosion depth after controlled exposure.

Key Topics

• Scope and purpose
  • Evaluates erosion of metal materials with surface processing in contact with molten lead‑free solder.
  • Aims to predict service life and maintenance intervals to prevent accidents.
• Test equipment requirements
  • Test rig includes a pot unit (heater and solder pot), rotation unit (motor and rotation block), and control unit (temperature and rotation control).
  • Components contacting molten solder must be erosion‑resistant or surface‑processed; ventilation/exhaust for dross handling is recommended.
• Specimens and preparation
  • Specimens are marked with surface processing designation; both treated face and backside are evaluated over a defined area.
• Test methods
  • Method A: specimen tested without bending.
  • Method B: accelerated test with the specimen in a bent state to increase stress and simulate accelerated erosion.
  • Includes a dross removal procedure to ensure repeatable exposure.
• Erosion measurement
  • Erosion depth is measured after exposure; guidance covers specimen preparation, measurement equipment (e.g., optical microscope focal‑depth methods), and measurement accuracy (details in Annex A).
• Reporting
  • Test conditions, alloy composition, temperature, rotation parameters, and measured erosion depths must be recorded.

Applications

• Quality assurance and material selection for manufacturers of wave soldering equipment, solder baths, transport augers and related components.
• Process engineers establishing maintenance schedules and safe operating limits for lead‑free wave soldering lines.
• R&D and materials testing labs comparing coatings and surface treatments for erosion resistance in molten solder environments.
• Safety and compliance teams using test data to mitigate fire and failure risk linked to molten solder contact.

Related Standards

• IEC 62739-1 (general erosion terminology and concepts)
• IEC 61190-1-3 (requirements and composition for electronic‑grade lead‑free solder alloys)
• EN 62739-2:2016 is the CENELEC-adopted version of IEC 62739-2:2016.

Keywords: EN 62739-2:2016, IEC 62739-2:2016, erosion test method, wave soldering, lead-free solder alloy, solder bath erosion, metal surface processing, erosion depth measurement, dross.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Preskusna metoda za opremo za valovno spajkanje, ki uporablja staljeno spajkalno zlitino brez svinca - 2. del: Metoda z erozijskim preskušanjem kovinskih materialov s površinsko obdelavoMéthode d'essai de l'érosion de l'équipement de brasage à la vague utilisant un alliage à braser sans plomb fondu - Partie 2: Méthode d'essai d'érosion de matériaux métalliques avec traitement de surfaceTest method for erosion of wave soldering equipment using molten lead-free solder alloy - Part 2: Erosion test method for metal materials with surface processing25.160.50Trdo in mehko lotanjeBrazing and solderingICS:Ta slovenski standard je istoveten z:EN 62739-2:2016SIST EN 62739-2:2017en01-april-2017SIST EN 62739-2:2017SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 62739-2
October 2016 ICS 31.190; 31.240
English Version
Test method for erosion of wave soldering equipment using molten lead-free solder alloy - Part 2: Erosion test method for metal materials with surface processing (IEC 62739-2:2016)
Méthode d'essai de l'érosion de l'équipement de brasage à la vague utilisant un alliage à braser sans plomb fondu - Partie 2: Méthode d'essai d'érosion de matériaux métalliques avec traitement de surface (IEC 62739-2:2016)
Verfahren zur Erosionsprüfung für Wellenlötausrüstungen bei Verwendung von geschmolzener, bleifreier Lotlegierung - Teil 2: Erosionsprüfverfahren für metallische Werkstoffe mit Oberflächenbehandlung (IEC 62739-2:2016) This European Standard was approved by CENELEC on 2016-08-17. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17,
B-1000 Brussels © 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 62739-2:2016 E SIST EN 62739-2:2017

The following dates are fixed: • latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2017-05-17 • latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2019-08-17
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights.
Endorsement notice The text of the International Standard IEC 62739-2:2016 was approved by CENELEC as a European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60194:2015 NOTE Harmonized as EN 60194:2016. IEC 62739-1:2013 NOTE Harmonized as EN 62739-1:2013.
Annex ZA (normative)
Normative references to international publications with their corresponding European publications
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.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu.
Publication Year Title EN/HD Year IEC 61190-1-3 -
Attachment materials for electronic assembly -- Part 1-3: Requirements for electronic grade solder alloys and fluxed and non-fluxed solid solders for electronic soldering applications EN 61190-1-3 -
IEC 62739-2 Edition 1.0 2016-07 INTERNATIONAL STANDARD NORME INTERNATIONALE Test method for erosion of wave soldering equipment using molten lead-free solder alloy –
Part 2: Erosion test method for metal materials with surface processing
Méthode d'essai de l'érosion de l'équipement de brasage à la vague utilisant un alliage à braser sans plomb fondu –
Partie 2: Méthode d'essai d'érosion de matériaux métalliques avec traitement de surface INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE
ICS 31.190; 31.240
ISBN 978-2-8322-3522-5
– 2 – IEC 62739-2:2016 © IEC 2016 CONTENTS FOREWORD . 3 1 Scope . 5 2 Normative references. 5 3 Terms and definitions . 5 4 Test . 6 4.1 General . 6 4.2 Test equipment . 6 4.2.1 Test equipment description . 6 4.2.2 Configuration example of test equipment . 6 4.3 Specimen . 7 4.4 Test conditions . 8 4.5 Test methods . 9 4.5.1 Method A – Without bending . 9 4.5.2 Method B – Accelerated in bended state . 10 4.5.3 Dross removal procedure . 11 5 Erosion depth measurement . 11 5.1 General . 11 5.2 Preparation of the specimen . 11 5.3 Measurement equipment . 12 5.4 Measurement procedure . 12 6 Items to be recorded in test report . 13 Annex A (normative)
Specifications of test equipment
and measurement equipment . 14 A.1 Overview. 14 A.2 Characteristics of the test equipment . 14 A.2.1 General . 14 A.2.2 Pot unit . 14 A.2.3 Rotation unit . 14 A.2.4 Control unit . 14 A.2.5 Ventilation . 15 A.3 Accuracy of the measurement equipment . 15 A.3.1 General . 15 A.3.2 Measurement accuracy . 15 Bibliography . 16
Figure 1 – Configuration example of test equipment . 7 Figure 2 – Shape of the specimen . 8 Figure 3 – Example of a specimen attachment state without bending . 10 Figure 4 – Example of a specimen attachment state with 2 mm bending . 11 Figure 5 – Example of measurement equipment configuration for
the focal depth method using an optical microscope . 12
Table 1 – Test conditions . 9
IEC 62739-2:2016 © IEC 2016 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
TEST METHOD FOR EROSION OF WAVE SOLDERING
EQUIPMENT USING MOLTEN LEAD-FREE SOLDER ALLOY –
Part 2: Erosion test method for metal materials
with surface processing
FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 62739-2 has been prepared by IEC technical committee 91: Electronics assembly technology. The text of this standard is based on the following documents: FDIS Report on voting 91/1365/FDIS 91/1379/RVD
Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. SIST EN 62739-2:2017

– 4 – IEC 62739-2:2016 © IEC 2016 A list of all parts in the IEC 62739 series, published under the general title Test method for erosion of wave soldering equipment using molten lead-free solder alloy, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to the specific publication. At this date, the publication will be
• reconfirmed, • withdrawn, • replaced by a revised edition, or • amended.
IEC 62739-2:2016 © IEC 2016 – 5 –
TEST METHOD FOR EROSION OF WAVE SOLDERING
EQUIPMENT USING MOLTEN LEAD-FREE SOLDER ALLOY –
Part 2: Erosion test method for metal materials
with surface processing
1 Scope This part of IEC 62739 provides an evaluating test method for the erosion of the metallic materials with surface processing intended to be used for lead-free wave soldering equipment as a solder bath and other components which are in contact with the molten solder. It aims at prevention of an accident or a fire by predicting a setup and life of a suitable maintenance cycle.
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.
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