This document specifies the requirements for chemical composition for soft solder alloys containing two or more of: tin, lead, antimony, copper, silver, bismuth, zinc, indium and/or cadmium.
An indication of the forms generally available is also included.

Weichlote - Chemische Zusammensetzung und Lieferformen (ISO/FDIS 9453:2020)

Dieses Dokument legt die Anforderungen für die chemische Zusammensetzung für Weichlote, die zwei oder mehr der Elemente Zinn, Blei, Antimon, Kupfer, Silber, Bismut, Zink, Indium und/oder Cadmium enthalten, fest.
Eine Angabe für allgemein erhältliche Lieferformen ist ebenfalls erfasst.

Alliages de brasage tendre - Compositions chimiques et formes (ISO/FDIS 9453:2020)

Le présent document spécifie les exigences relatives à la composition chimique d'alliages de brasage tendre contenant au moins deux éléments: étain, plomb, antimoine, cuivre, argent, bismuth, zinc, indium et/ou cadmium.
Une indication relative aux formes généralement disponibles est également incluse.

Mehke spajke - Kemijska sestava in oblike (ISO/FDIS 9453:2020)

General Information

Status
Not Published
Technical Committee
Current Stage
6055 - CEN Ratification completed (DOR) - Publishing
Due Date
20-Sep-2020
Completion Date
20-Sep-2020

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SLOVENSKI STANDARD
oSIST prEN ISO 9453:2019
01-december-2019
Mehke spajke - Kemijska sestava in oblike (ISO/DIS 9453:2019)
Soft solder alloys - Chemical compositions and forms (ISO/DIS 9453:2019)
Weichlote - Chemische Zusammensetzung und Lieferformen (ISO/DIS 9453:2019)

Alliages de brasage tendre - Compositions chimiques et formes (ISO/DIS 9453:2019)

Ta slovenski standard je istoveten z: prEN ISO 9453
ICS:
25.160.50 Trdo in mehko lotanje Brazing and soldering
oSIST prEN ISO 9453:2019 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 9453:2019
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oSIST prEN ISO 9453:2019
DRAFT INTERNATIONAL STANDARD
ISO/DIS 9453
ISO/TC 44/SC 12 Secretariat: DIN
Voting begins on: Voting terminates on:
2019-10-11 2020-01-03
Soft solder alloys — Chemical compositions and forms
Alliages de brasage tendre — Compositions chimiques et formes
ICS: 25.160.50
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 9453:2019(E)
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 SUPPORTING DOCUMENTATION. ISO 2019
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oSIST prEN ISO 9453:2019
ISO/DIS 9453:2019(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2019

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: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved
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oSIST prEN ISO 9453:2019
ISO/DIS 9453:2019(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Chemical composition ..................................................................................................................................................................................... 1

5 Forms of delivery .................................................................................................................................................................................................. 1

5.1 General ........................................................................................................................................................................................................... 1

5.2 Unit of product ........................................................................................................................................................................................ 2

6 Sampling and analysis..................................................................................................................................................................................... 2

7 Marking, labelling and packaging ...................................................................................................................................................... 2

Annex A (informative) Comparison between alloy numbers in ISO 9453 and short names

and chemical compositions according to IEC 61190-1-3 ............................................................................................ 9

Annex B (Informative) Patented alloys and patent holder list ...............................................................................................11

Bibliography .............................................................................................................................................................................................................................12

© ISO 2019 – All rights reserved iii
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oSIST prEN ISO 9453:2019
ISO/DIS 9453:2019(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.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International

Standards adopted by the technical committees are circulated to the member bodies for voting.

Publication as an International Standard requires approval by at least 75 % of the member bodies

casting a vote.

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.

ISO 9453 was prepared by Technical Committee ISO/TC 44, Welding, Subcommittee SC 12, Soldering

materials.
iv © ISO 2019 – All rights reserved
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oSIST prEN ISO 9453:2019
ISO/DIS 9453:2019(E)
Introduction

The International Organization for Standardization (ISO) draws attention to the fact that it is claimed

that conformance to this document may involve the use of a patent concerning soft solder alloy

compositions given in Table 3.

ISO takes no position concerning the evidence, validity and scope of this patent right.

The holder of this patent right has assured the ISO that he/she is willing to negotiate licences under

reasonable and non-discriminatory terms and conditions with applicants throughout the world.

Attention is drawn to the possibility that some of the elements (in particular the alloy compositions)

of this document may be the subject of patent rights other than those identified above. ISO shall not be

held responsible for identifying any or all such patent rights.

Patent rights vary between country of manufacture, sale, use and final destination; suppliers or users

remain responsible for establishing the exact legal position relevant to their own situation.

Request for an official interpretation of technical aspects of this International Standard should be

directed to the relevant secretariat of ISO/TC 44/SC 12 "Soldering materials" via the user's national

standardization body; a listing of these bodies can be found at www .iso .org.
© ISO 2019 – All rights reserved v
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oSIST prEN ISO 9453:2019
DRAFT INTERNATIONAL STANDARD ISO/DIS 9453:2019(E)
Soft solder alloys — Chemical compositions and forms
1 Scope

This International Standard specifies the requirements for chemical composition for soft solder alloys

containing two or more of:
— tin, lead, antimony, copper, silver, bismuth, zinc, indium and/or cadmium.
An indication of the forms generally available is also included.
2 Normative references

The following referenced documents are indispensable for the application 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 3677, Filler metal for soldering and brazing — Designation
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
soft solder

metallic filler material which is used to join metallic parts and which has a melting temperature

(liquidus) lower than that of the parts to be joined and, usually, lower than 450 °C and which wets the

parent metals
3.2
batch

collection of one or more units of product, made in a single production operation

4 Chemical composition

The chemical composition of the soft solder, sampled and analysed in accordance with Clause 6, shall be

as given for the appropriate material in Table 1 or Table 2.
5 Forms of delivery
5.1 General

Soft solders conforming to this International Standard shall be supplied in one of the following forms:

ingot, slab, stick, bar, rod, wire, pellets, preforms, spheres, ribbons, powder or pastes and creams

containing powder. Solder shall be uniform in quality and free from detrimental conditions such as

contamination or surface oxide that prevent melting and flow in a manner suitable for the intended

application.

NOTE 1 Solders supplied in the form of rod, wire, or preforms may be supplied with or without an integral

flux, subject to agreement between the supplier and the purchaser.

NOTE 2 Not all the solder compositions given in the tables are necessarily available in all the product

forms listed.
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oSIST prEN ISO 9453:2019
ISO/DIS 9453:2019(E)
5.2 Unit of product

The unit of product used for defining the requirements for the marking of soft solders varies with the

form of the solder,
NOTE See Table 1.
Table 1 — Variations of unit of product with form of solder
Form of solder Unit of product
Ingot, bar, slab, stick or rod A single ingot, bar, slab, stick or rod
Wire or ribbon A single coil or reel
Preforms and rings, spheres, pellets or powder The individual packaged quantity
Powder in solder pastes The individual packaged quantity
6 Sampling and analysis

Pending the publication of International Standards for sampling and for methods of analysis for soft

solder alloys, the methods used shall, in cases of dispute, be agreed between the supplier and the

purchaser.
NOTE Preferred analysis methods are Spark-OES and AAS.
7 Marking, labelling and packaging

Each batch of solder supplied in accordance with this International Standard shall be marked with the

information indicated by a cross in Table 4.
The information in Table 4 shall be applied to the product forms as follows:

a) for ingots and slabs: by stamping, or inkjet marking on the surface of each unit of product;

b) for sticks, bars, rods and wire in coil: either on a label securely attached to each unit of product, or

on a label on the package in which the units of product are contained;
c) for wire or ribbon on reels: on a label on each reel;

d) for pellets, performs, spheres, powder, paste or cream: on a label on each individually packaged

quantity;

All product forms shall also be labelled with any health and safety warnings required by the relevant

rules and regulations of the country of manufacture, or as specified in the order.

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oSIST prEN ISO 9453:2019
ISO/DIS 9453:2019(E)
© ISO 2019 – All rights reserved 3

Table 2 — Chemical compositions of lead containing solder alloys (tin-lead, lead-tin, tin-lead-antimony, tin-lead-bismuth, tin-lead-

cadmium, tin-lead-copper, tin-lead-silver, and lead-silver)
d, e

Group Alloy Alloy Designa- Melting or soli- Chemical composition, mass fraction in %

No. tion according dus/liquidus
Sn Pb Sb Bi Cd Cu Au In Ag Al As Fe Ni Zn
b c
to ISO 3677 temperature °C

101 Sn63Pb37 183 62,5 to 63,5 Rem 0,20 0,10 0,002 0,08 0,05 0,10 0,10 0,001 0,03 0,02 0,01 0,001

Tin-lead binary

102 Sn63Pb37E 183 62,5 to 63,5 Rem 0,05 0,05 0,002 0,08 0,05 0,10 0,10 0,001 0,03 0,02 0,01 0,001

alloys solidus
temperature

103 Sn60Pb40 183/190 59,5 to 60,5 Rem 0,20 0,10 0,002 0,08 0,05 0,10 0,10 0,001 0,03 0,02 0,01 0,001

183 °C

104 Sn60Pb40E 183/190 59,5 to 60,5 Rem 0,05 0,05 0,002 0,08 0,05 0,10 0,10 0,001 0,03 0,02 0,01 0,001

111 Pb50Sn50 183/215 49,5 to 50,5 Rem 0,20 0,10 0,002 0,08 0,05 0,10 0,10 0,001 0,03 0,02 0,01 0,001

112 Pb50Sn50E 183/215 49,5 to 50,5 Rem 0,05 0,05 0,002 0,08 0,05 0,10 0,10 0,001 0,03 0,02 0,01 0,001

Lead-tin binary

113 Pb55Sn45 183/226 44,5 to 45,5 Rem 0,50 0,25 0,005 0,08 0,05 0,10 0,10 0,001 0,03 0,02 0,01 0,001

alloys solidus

114 Pb60Sn40 183/238 39,5 to 40,5 Rem 0,50 0,25 0,005 0,08 0,05 0,10 0,10 0,001 0,03 0,02 0,01 0,001

temperature

183 °C 115 Pb65Sn35 183/245 34,5 to 35,5 Rem 0,50 0,25 0,005 0,08 0,05 0,10 0,10 0,001 0,03 0,02 0,01 0,001

116 Pb70Sn30 183/255 29,5 to 30,5 Rem 0,50 0,25 0,005 0,08 0,05 0,10 0,10 0,001 0,03 0,02 0,01 0,001

117 Pb80Sn20 183
...

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