EN ISO 9455-15:2017

Soft soldering fluxes - Test methods - Part 15: Copper corrosion test (ISO 9455-15:2017)

ISO 9455-15:2017 specifies a qualitative method for determination of the corrosive properties of flux residues on a copper substrate when subjected to controlled environmental conditions. The test is applicable to type 1 fluxes, as defined in ISO 9454‑1.

Flussmittel zum Weichlöten - Prüfverfahren - Teil 15: Kupferkorrosionsprüfung (ISO 9455-15:2017)

Dieser Teil der ISO 9455 liegt eine qualitative Methode fest zur Bestimmung der korrosiven Eigenschaften von Flussmittelrückständen auf einem Kupfersubstrat unter kontrollierbaren Umgebungsbedingungen. Die Prüfung ist anwendbar auf alle Flussmittel der Klasse 1 nach ISO 9454-1.

Flux de brasage tendre - Méthodes d'essai - Partie 15: Essai de corrosion du cuivre (ISO 9455-15:2017)

ISO 9455-15:2017 spécifie une méthode quantitative pour la détermination des propriétés corrosives des résidus de flux sur un substrat de cuivre, lorsqu'il est soumis à des conditions environnementales contrôlées. L'essai est applicable aux flux de type 1, tels que définis dans l'ISO 9454‑1.

Talila za mehko spajkanje - Preskusne metode - 15. del: Korozijski preskus bakra (ISO 9455-15:2017)

Ta dokument določa kvalitativno metodo za določevanje korozivnih lastnosti ostankov talila na bakrenih podlagah pri nadzorovanih okoljskih pogojih. Preskus se uporablja za talila tipa 1 iz standarda ISO 9454-1.

General Information

• Status: Published
• Publication Date: 12-Sep-2017
• Withdrawal Date: 30-Mar-2018
• ICS: 25.160.50 - Brazing and soldering
• Technical Committee: CEN/TC 121 - Welding
• Drafting Committee: CEN/TC 121 - Welding
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 13-Sep-2017
• Completion Date: 13-Sep-2017
• Ref Project: SIST EN ISO 9455-15:2018 - Soft soldering fluxes - Test methods - Part 15: Copper corrosion test (ISO 9455-15:2017)

Relations

• Replaces: EN ISO 9455-15:1999 - Soft soldering fluxes - Test methods - Part 15: Copper corrosion test (ISO 9455-15:1996)
• Effective Date: 12-Feb-2014

Overview

EN ISO 9455-15:2017 - Soft soldering fluxes: Copper corrosion test (ISO 9455-15:2017) specifies a qualitative test method to determine the corrosive properties of flux residues on a copper substrate under controlled environmental conditions. The procedure is intended for type 1 fluxes (as defined in ISO 9454‑1) and is adopted by CEN as a European standard. The test helps assess whether flux residues promote copper corrosion after soldering and environmental exposure.

Key Topics

• Test principle: A solder pellet is melted in contact with the flux on a prepared copper test piece; the specimen is conditioned in a controlled temperature/humidity environment and inspected microscopically for corrosion.
• Scope and applicability: Applies to type 1 soft soldering fluxes; updated to include lead‑free solders in the 2017 revision.
• Sample preparation:
  • 0.5 mm phosphorus‑deoxidized copper sheet cut to 50 × 50 mm and cupped to a 3 mm depression.
  • Cleaning sequence: degreasing solvent, sulfuric acid treatment, ammonium peroxodisulfate etch, rinses and drying (detailed in the standard).
• Reagents and materials: ammonium peroxodisulfate solution, 5 % sulfuric acid, neutral organic degreasing solvent, and specified solder alloys (e.g., Sn63Pb37, Sn60Pb40, Sn96.5Ag3Cu0.5) or other agreed alloys.
• Apparatus and conditions:
  • Solder bath (specified temperatures per alloy),
  • Humidity chamber conforming to IEC 60068‑2‑78 (test Cab damp heat steady state),
  • Cupping device, drying oven (60 °C), and a low‑power stereomicroscope (×20 magnification).
• Assessment and reporting: Visual/microscopic assessment of corrosion after fluxing, melting and conditioning; results expressed qualitatively and recorded in a test report.

Applications

• Flux manufacturers: product development and quality control to ensure flux residues are non‑corrosive on copper.
• Solder and electronic assembly suppliers: qualification of flux/solder combinations, especially for lead‑free processes.
• Quality assurance and testing laboratories: environmental exposure testing, corrosion evaluation, and failure analysis.
• Electronics and PCB manufacturers: selecting flux systems to minimize post‑assembly copper corrosion and reliability risks.

Benefits include improved process control, reduced field failures from corrosive residues, and evidence for materials selection and supplier agreements.

Related Standards

• ISO 9454‑1 - Flux classification (type 1 definition)
• ISO 9453 - Soft solder alloys - compositions and forms
• ISO 9455‑1, ISO 9455‑2 - Other test methods for soft soldering fluxes
• IEC 60068‑2‑78 - Environmental testing: damp heat (steady state)

Keywords: EN ISO 9455-15:2017, soft soldering fluxes, copper corrosion test, flux residues, type 1 fluxes, soldering flux testing, lead-free solder evaluation, humidity chamber, IEC 60068-2-78.

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2018
1DGRPHãþD
SIST EN ISO 9455-15:2001
Talila za mehko spajkanje - Preskusne metode - 15. del: Korozijski preskus bakra
(ISO 9455-15:2017)
Soft soldering fluxes - Test methods - Part 15: Copper corrosion test (ISO 9455-15:2017)
Flussmittel zum Weichlöten - Prüfverfahren - Teil 15: Kupferkorrosionsprüfung (ISO 9455
-15:2017)
Flux de brasage tendre - Méthodes d'essai - Partie 15: Essai de corrosion du cuivre (ISO
9455-15:2017)
Ta slovenski standard je istoveten z: EN ISO 9455-15:2017
ICS:
25.160.50 Trdo in mehko lotanje Brazing and soldering
77.060 Korozija kovin Corrosion of metals
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 9455-15
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2017
EUROPÄISCHE NORM
ICS 25.160.50 Supersedes EN ISO 9455-15:1999
English Version
Soft soldering fluxes - Test methods - Part 15: Copper
corrosion test (ISO 9455-15:2017)
Flux de brasage tendre - Méthodes d'essai - Partie 15: Flussmittel zum Weichlöten - Prüfverfahren - Teil 15:
Essai de corrosion du cuivre (ISO 9455-15:2017) Kupferkorrosionsprüfung (ISO 9455-15:2017)
This European Standard was approved by CEN on 8 September 2017.

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, Serbia, 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
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9455-15:2017 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 9455-15:2017) has been prepared by Technical Committee ISO/TC 44 “Welding
and allied processes” 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 March 2018, and conflicting national standards shall
be withdrawn at the latest by March 2018.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 9455-15:1999.
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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 9455-15:2017 has been approved by CEN as EN ISO 9455-15:2017 without any
modification.
INTERNATIONAL ISO
STANDARD 9455-15
Second edition
2017-08
Soft soldering fluxes — Test
methods —
Part 15:
Copper corrosion test
Flux de brasage tendre — Méthodes d’essai —
Partie 15: Essai de corrosion du cuivre
Reference number
ISO 9455-15:2017(E)
©
ISO 2017
ISO 9455-15:2017(E)
© ISO 2017, 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
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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2017 – All rights reserved

ISO 9455-15:2017(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents and materials . 1
6 Apparatus . 2
7 Preparation of tests pieces . 2
8 Procedure. 3
8.1 General . 3
8.2 Fluxing the test pieces . 4
8.2.1 For solid, paste and liquid flux samples . 4
8.2.2 For flux-cored solder samples . 4
8.2.3 For solder paste samples . 4
8.3 Heating the test pieces . 4
8.4 Conditioning the test pieces . 5
8.5 Examination of the test pieces . 5
8.6 Assessment of corrosion. 5
8.6.1 General. 5
8.6.2 Examination after fluxing and melting . 6
8.6.3 Examination after conditioning . 6
9 Expression of results . 6
10 Test report . 6
Annex A (informative) Examples of varying degrees of corrosion resulting from the copper
corrosion test . 7
Bibliography .12
ISO 9455-15:2017(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
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 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 the following
URL: w w w . i s o .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 44, Welding and allied processes,
Subcommittee SC 12, Soldering materials.
This second edition cancels and replaces the first edition (ISO 9455-15:1996), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— the use of lead-free solders has been included;
— the requirements for the apparatus have been updated;
— the test report has been updated;
— the figures in Annex A have been re-arranged;
— this document has been editorially revised.
A list of all parts in the ISO 9455 series can be found on the ISO website.
Requests for official interpretations of any aspect of this document should be directed to the Secretariat
of ISO/TC 44/SC 12 via your national standards body. A complete listing of these bodies can be found at
www .iso .org.
iv © ISO 2017 – All rights reserved

INTERNATIONAL STANDARD ISO 9455-15:2017(E)
Soft soldering fluxes — Test methods —
Part 15:
Copper corrosion test
1 Scope
This document specifies a qualitative method for determination of the corrosive properties of flux
residues on a copper substrate when subjected to controlled environmental conditions. The test is
applicable to type 1 fluxes, as defined in ISO 9454-1.
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 197-1, Copper and copper alloys — Terms and definitions — Part 1: Materials
ISO 9453, Soft solder alloys — Chemical compositions and forms
ISO 9455-1, Soft soldering fluxes — Test methods — Part 1: Determination of non-volatile matter,
gravimetric method
IS
...