SIST EN ISO 9454-2:2020

Soft soldering fluxes - Classification and requirements - Part 2: Performance requirements (ISO 9454-2:2020)

This document specifies the performance requirements for fluxes in solid, liquid and paste forms
intended for use with soft solders.
NOTE 1 ISO 9454-1 specifies the requirements for labelling and packaging as well as the coding system for the
classification of the fluxes.
NOTE 2 Some of the fluxes intended for inert gas and vapour phase soldering may not pass some of the criteria
in Tables 1 and 2.
Requirements for these fluxes are agreed between the purchaser and the supplier.

Flussmittel zum Weichlöten - Einteilung und Anforderungen - Teil 2: Eignungsanforderungen (ISO 9454-2:2020)

Dieses Dokument legt die Eignungsanforderungen für Flussmittel in fester, flüssiger und pastöser Form, die zum Weichlöten verwendet werden, fest.
ANMERKUNG 1   ISO 9454 1 legt die Anforderungen für Kennzeichnung und Verpackung sowie ein Kurzzeichen-System zur Einteilung der Flussmittel fest.
ANMERKUNG 2   Einige Flussmittel zum Schutzgas- und Dampf-Phase-Löten können u. U. einige der Kriterien in Tabelle 1 und Tabelle 2 nicht erfüllen.
Die Anforderungen für diese Flussmittel werden zwischen dem Käufer und dem Lieferanten abgestimmt.

Flux de brasage tendre - Classification et exigences - Partie 2: Exigences de performance (ISO 9454-2:2020)

Le présent ducument fixe les exigences de performance pour les flux solides, liquides ou en pâte, destinés à être utilisés avec des métaux d'apport de brasage tendre.
NOTE 1    L'ISO 9454‑1 fixe les spécifications relatives au marquage et à l'emballage ainsi que le système de codification pour la classification des flux.
NOTE 2    Certains flux destinés au brasage tendre en atmosphère inerte et au brasage tendre en phase vapeur peuvent ne pas répondre aux critères indiqués dans les Tableaux 1 et 2.
Il est recommandé que les exigences relatives à ces flux fassent l'objet d'un accord entre l'acheteur et le fournisseur

Talila za mehko spajkanje - Razvrstitev in zahteve - 2. del: Zahtevane lastnosti (ISO 9454-2:2020)

General Information

• Status: Published
• Public Enquiry End Date: 29-Sep-2020
• Publication Date: 12-Nov-2020
• ICS: 25.160.50 - Brazing and soldering
• Technical Committee: VAR - Welding
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 06-Nov-2020
• Due Date: 11-Jan-2021
• Completion Date: 13-Nov-2020
• Ref Project: EN ISO 9454-2:2020 - Soft soldering fluxes - Classification and requirements - Part 2: Performance requirements (ISO 9454-2:2020)

Relations

• Replaces: SIST EN ISO 9454-2:2001 - Soft soldering fluxes - Classification and requirements - Part 2: Performance requirements (ISO 9454-2:1998)
• Effective Date: 01-Dec-2020
• Replaces: SIST EN ISO 9454-2:2001 - Soft soldering fluxes - Classification and requirements - Part 2: Performance requirements (ISO 9454-2:1998)
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 9454-2:2020
01-december-2020
Nadomešča:
SIST EN ISO 9454-2:2001
Talila za mehko spajkanje - Razvrstitev in zahteve - 2. del: Zahtevane lastnosti (ISO
9454-2:2020)
Soft soldering fluxes - Classification and requirements - Part 2: Performance
requirements (ISO 9454-2:2020)
Flussmittel zum Weichlöten - Einteilung und Anforderungen - Teil 2:
Eignungsanforderungen (ISO 9454-2:2020)
Flux de brasage tendre - Classification et exigences - Partie 2: Exigences de
performance (ISO 9454-2:2020)
Ta slovenski standard je istoveten z: EN ISO 9454-2:2020
ICS:
25.160.50 Trdo in mehko lotanje Brazing and soldering
SIST EN ISO 9454-2:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 9454-2:2020

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SIST EN ISO 9454-2:2020


EN ISO 9454-2
EUROPEAN STANDARD

NORME EUROPÉENNE

November 2020
EUROPÄISCHE NORM
ICS 25.160.50 Supersedes EN ISO 9454-2:2000
English Version

Soft soldering fluxes - Classification and requirements -
Part 2: Performance requirements (ISO 9454-2:2020)
Flux de brasage tendre - Classification et exigences - Flussmittel zum Weichlöten - Einteilung und
Partie 2: Exigences de performance (ISO 9454-2:2020) Anforderungen - Teil 2: Eignungsanforderungen (ISO
9454-2:2020)
This European Standard was approved by CEN on 1 November 2020.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, 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: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9454-2:2020 E
worldwide for CEN national Members.

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SIST EN ISO 9454-2:2020
EN ISO 9454-2:2020 (E)
Contents Page
European foreword . 3

2

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SIST EN ISO 9454-2:2020
EN ISO 9454-2:2020 (E)
European foreword
This document (EN ISO 9454-2:2020) 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 May 2021, and conflicting national standards shall be
withdrawn at the latest by May 2021.
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 9454-2:2000.
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, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 9454-2:2020 has been approved by CEN as EN ISO 9454-2:2020 without any
modification.

3

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SIST EN ISO 9454-2:2020

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SIST EN ISO 9454-2:2020
INTERNATIONAL ISO
STANDARD 9454-2
Second edition
2020-10
Soft soldering fluxes — Classification
and requirements —
Part 2:
Performance requirements
Flux de brasage tendre — Classification et exigences —
Partie 2: Exigences de performance
Reference number
ISO 9454-2:2020(E)
©
ISO 2020

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SIST EN ISO 9454-2:2020
ISO 9454-2:2020(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
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 © ISO 2020 – All rights reserved

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SIST EN ISO 9454-2:2020
ISO 9454-2:2020(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Flux condition . 2
5 Performance requirements for fluxes . 2
Bibliography . 6
© ISO 2020 – All rights reserved iii

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SIST EN ISO 9454-2:2020
ISO 9454-2:2020(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 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 44, Welding and allied processes,
Subcommittee SC 12, Soldering materials, in collaboration with the European Committee for
Standardization (CEN) Technical Committee CEN/TC 121, Welding and allied processes, in accordance
with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 9454-2:1998), of which it constitutes a
minor revision.
The main changes compared to the previous edition are as follows:
— Clause 2 has been updated;
— the coding of the fluxes has been updated in accordance with ISO 9454-1:2016;
— the format of this document has been updated.
A list of all parts in the ISO 9454 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.
Official interpretations of ISO/TC 44 documents, where they exist, are available from this page: https://
committee .iso .org/ sites/ tc44/ home/ interpretation .html.
iv © ISO 2020 – All rights reserved

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SIST EN ISO 9454-2:2020
ISO 9454-2:2020(E)

Introduction
Fluxes assist molten solder to wet metals surfaces to be joined by removing oxides and related
contaminants from the solder and surfaces of the parts during soldering.
...

SLOVENSKI STANDARD
oSIST prEN ISO 9454-2:2020
01-september-2020
Talila za mehko spajkanje - Razvrstitev in zahteve - 2. del: Zahtevane lastnosti
(ISO/FDIS 9454-2:2020)
Soft soldering fluxes - Classification and requirements - Part 2: Performance
requirements (ISO/FDIS 9454-2:2020)
Flußmittel zum Weichlötel - Einteilung und Anforderungen - Teil 2:
Eignungsanforderungen (ISO/FDIS 9454-2:2020)
Flux de brasage tendre - Classification et exigences - Partie 2: Exigences de
performance (ISO/FDIS 9454-2:2020)
Ta slovenski standard je istoveten z: prEN ISO 9454-2
ICS:
25.160.50 Trdo in mehko lotanje Brazing and soldering
oSIST prEN ISO 9454-2:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN ISO 9454-2:2020

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oSIST prEN ISO 9454-2:2020
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 9454-2
ISO/TC 44/SC 12
Soft soldering fluxes — Classification
Secretariat: DIN
and requirements —
Voting begins on:
2020-07-08
Part 2:
Voting terminates
Performance requirements
on: 2020-09-30
Flux de brasage tendre — Classification et caractéristiques —
Partie 2: Prescriptions de performance
ISO/CEN PARALLEL PROCESSING
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 9454-2:2020(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
©
NATIONAL REGULATIONS. ISO 2020

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oSIST prEN ISO 9454-2:2020
ISO/FDIS 9454-2:2020(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
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 © ISO 2020 – All rights reserved

---------------------- Page: 4 ----------------------
oSIST prEN ISO 9454-2:2020
ISO/FDIS 9454-2:2020(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Flux condition . 2
5 Performance requirements for fluxes . 2
Bibliography . 6
© ISO 2020 – All rights reserved iii

---------------------- Page: 5 ----------------------
oSIST prEN ISO 9454-2:2020
ISO/FDIS 9454-2:2020(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 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 44, Welding and allied processes,
Subcommittee SC 12, Soldering materials, in collaboration with the European Committee for
Standardization (CEN) Technical Committee CEN/TC 121, Welding, in accordance with the Agreement
on technical cooperation between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 9454-2:1998), of which it constitutes a
minor revision.
The main changes compared to the previous edition are as follows:
— Clause 2 has been updated;
— the coding of the fluxes has been updated in accordance with ISO 9454-1:2016;
— the format of this document has been updated.
A list of all parts in the ISO 9454 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 © ISO 2020 – All rights reserved

---------------------- Page: 6 ----------------------
oSIST prEN ISO 9454-2:2020
ISO/FDIS 9454-2:2020(E)

Introduction
Fluxes assist molten solder to wet metals surfaces to be joined by removing oxides and related
contaminants from the solder and surfaces of the parts during soldering. Fluxes also protect surfaces
from oxidization and assist wetting of the base metals by molten solder.
Care is necessary when selecting a flux for a particular application, in order to ensure an adequate
service life of the assembly. Factors such as the ease of residue removal, corrosiveness, possible health
and safety hazards and the efficacy of the flux, should all be considered when making the choice.
© ISO 2020 – All rights reserved v

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oSIST prEN ISO 9454-2:2020

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oSIST prEN ISO 9454-2:2020
FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 9454-2:2020(E)
Soft soldering fluxes — Classification and requirements —
Part 2:
Performance requirements
1 Scope
This document specifies the performance requirements for fluxes in solid, liquid and paste forms
intended for use with soft solders.
NOTE 1 ISO 9454-1 specifies the requirements for labelling and packaging as well as the coding system for the
classification of the fluxes.
NOTE 2 Some of the fluxes intended for inert gas and vapour phase soldering may not pass some of the criteria
in Tables 1 and 2.
Requirements for these fluxes are agreed between the purchaser and the supplier.
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 9455-3:2019, Soft soldering fluxes — Test methods — Part 3: Determination of acid value,
potentiometric and visual titration methods
3 Terms and definitions
For the purposes of this
...