SIST EN ISO 4528:2015

SLOVENSKI STANDARD
SIST EN ISO 4528:2015
01-maj-2015
1DGRPHãþD
SIST EN ISO 4528:2009
6WHNODVWLLQSRUFHODQVNL]DNOMXþQLHPDMOL9RGLOR]DL]ERUSUHVNXVQLKPHWRG]D
HPDMOLUDQHSRYUãLQHL]GHONRY,62
Vitreous and porcelain enamel finishes - Guide to selection of test methods for vitreous
and porcelain enamelled areas of articles (ISO 4528:2015)
Emails und Emaillierungen - Leitlinie zur Auswahl von Prüfverfahren für emaillierte
Flächen von Erzeugnissen (ISO 4528:2015)
Finitions en émail vitrifié - Guide pour le choix des méthodes d'essai applicables aux
surfaces émaillées de pièces (ISO 4528:2015)
Ta slovenski standard je istoveten z: EN ISO 4528:2015
ICS:
25.220.50 Emajlne prevleke Enamels
SIST EN ISO 4528:2015 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN ISO 4528:2015

---------------------- Page: 2 ----------------------

SIST EN ISO 4528:2015

EUROPEAN STANDARD
EN ISO 4528

NORME EUROPÉENNE

EUROPÄISCHE NORM
February 2015
ICS 25.220.50 Supersedes EN ISO 4528:2009
English Version
Vitreous and porcelain enamel finishes - Guide to selection of
test methods for vitreous and porcelain enamelled areas of
articles (ISO 4528:2015)
Finitions en émail vitrifié - Guide pour le choix des Emails und Emaillierungen - Leitlinie zur Auswahl von
méthodes d'essai applicables aux surfaces émaillées de Prüfverfahren für emaillierte Flächen von Erzeugnissen
pièces (ISO 4528:2015) (ISO 4528:2015)
This European Standard was approved by CEN on 3 January 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
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4528:2015 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------

SIST EN ISO 4528:2015
EN ISO 4528:2015 (E)
Contents Page
Foreword .3
2

---------------------- Page: 4 ----------------------

SIST EN ISO 4528:2015
EN ISO 4528:2015 (E)
Foreword
This document (EN ISO 4528:2015) has been prepared by Technical Committee ISO/TC 107 " Metallic and
other inorganic coatings" in collaboration with Technical Committee CEN/TC 262 “Metallic and other inorganic
coatings” the secretariat of which is held by BSI.
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 August 2015, and conflicting national standards shall be withdrawn at
the latest by August 2015.
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 4528:2009.
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 4528:2015 has been approved by CEN as EN ISO 4528:2015 without any modification.
3

---------------------- Page: 5 ----------------------

SIST EN ISO 4528:2015

---------------------- Page: 6 ----------------------

SIST EN ISO 4528:2015
INTERNATIONAL ISO
STANDARD 4528
Second edition
2015-02-15
Vitreous and porcelain enamel
finishes — Guide to selection of test
methods for vitreous and porcelain
enamelled areas of articles
Finitions en émail vitrifié — Guide pour le choix des méthodes d’essai
applicables aux surfaces émaillées de pièces
Reference number
ISO 4528:2015(E)
©
ISO 2015

---------------------- Page: 7 ----------------------

SIST EN ISO 4528:2015
ISO 4528:2015(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2015
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
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2015 – All rights reserved

---------------------- Page: 8 ----------------------

SIST EN ISO 4528:2015
ISO 4528:2015(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2  Selection of test methods . 1
Bibliography .10
© ISO 2015 – All rights reserved iii

---------------------- Page: 9 ----------------------

SIST EN ISO 4528:2015
ISO 4528:2015(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 meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
ISO 4528 was prepared by the European Committee for Standardization (CEN) in collaboration with
ISO Technical Committee ISO/TC 107, Metallic and other inorganic coatings, in accordance with the
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 4528:2000), which has been technically
revised.
iv © ISO 2015 – All rights reserved

---------------------- Page: 10 ----------------------

SIST EN ISO 4528:2015
ISO 4528:2015(E)

Introduction
Standard test methods are required for measuring and controlling the properties and hence also the
quality of vitreous and porcelain enamelled finishes.
To ensure that these finishes meet the requirements of various applications, test methods have to be
chosen to measure the properties that are important to the function of a specific enamelled article.
© ISO 2015 – All rights reserved v

---------------------- Page: 11 ----------------------

SIST EN ISO 4528:2015

---------------------- Page: 12 ----------------------

SIST EN ISO 4528:2015
INTERNATIONAL STANDARD ISO 4528:2015(E)
Vitreous and porcelain enamel finishes — Guide to
selection of test methods for vitreous and porcelain
enamelled areas of articles
WARNING — This International Standard might not be compliant with some countries’ health and
safety legislation and calls for the use of substances and/or procedures that can be injurious to
health if adequate safety measures are not taken. This International Standard does not address
any health hazards, safety, or environmental matters and legislations associated with its use. It
is the responsibility of the user of this International Standard to establish appropriate health,
safety, and environmentally acceptable practices and take suitable actions to comply with any
national and international regulations. Compliance with this International Standard does not of
itself confer immunity from legal obligations.
1 Scope
This International Standard is a guide to the selection of test methods for evaluating the performance
of vitreous and porcelain enamelled finishes in different applications. It references the test methods
available for measuring the properties of these finishes and correlates these properties to the
requirements of specific enamelled articles.
It is limited for the most part to test methods that are described in ISO International/European Standards
and does not provide acceptance criteria or performance limits for the properties.
This International Standard applies to all enamelled articles irrespective of their basis metals.
2  Selection of test methods
The properties of enamelled surfaces are listed in Table 1, along with the numbers of the ISO test methods
by which they may be measured. The table identifies the tests that should be performed to assess the
performance of 30 specific enamelled articles. Suitable standard test methods are selected by noting the
specific tests recommended in the column for each of the enamelled articles.
The following symbols are used in Table 1.
— + testing in accordance with the method given is suitable;
— (+) the test method that is cited may need to be modified to take into account special require-
ments of a specific application;
— - the test is not applicable and/or the test method is not suitable.
© ISO 2015 – All rights reserved 1

---------------------- Page: 13 ----------------------

SIST EN ISO 4528:2015
ISO 4528:2015(E)

Table 1 — Test methods for assessing the properties of enamelled articles
Number and description of enamelled article
1 2 3 4
Cookers Cookers Cookers Room
(top plate) (baking com- [other  heating
ISO or EN
No. Property
a
partment , components equipment
test method
grills, burner  (excluding
caps, pan  cookware)]
supports, acces-
sories)
Methods of assessing resistance to chemical attack in various solutions
1 Cold citric acid ISO 28706-1:2008, Clause 9 + + + +
b b
2 Cold sulfuric acid ISO 28706-1:2008, Clause 10 - - + +
3 Boiling citric acid ISO 28706-2:2008, Clause 10 - - - -
4 Boiling sulfuric acid ISO 28706-2:2008, Clause 11 - - - -
Condensing hydrochloric acid ISO 28706-2:2008, Clause 12
5 - - - -
vapour
Condensing products of com-
6 EN 1856–1, Annex A - - - -
bustion vapour
7 Hot sodium hydroxide ISO 28706-4, Clause 9 - - - -
8 Boiling water ISO 28706-2:2008, Clause 13 - - - -
9 Water vapour ISO 28706-2:2008, Clause 13 - - - -
10 Hot standard detergent ISO 28706-3:2008, Clause 9 - - - -
c
11 Liquid cleaners + + + +
d
12 Weathering resistance - - - -
13 Special corrosive substances ISO 28706-4 - - - -
14 Special corrosive substances ISO 28706-5 - - - -
e
15 Release of lead and cadmium ISO 4531-1/EN 1388–2 - + - -
Methods of assessing thickness and other properties
16 Thickness ISO 2178, ISO 2360 + + + +
17 Reflectivity and gloss ISO 2813 - - - -
c
18 Waviness - - - -
19 Colour ISO 105-J03/ISO 7724 (all parts) + + + +
c
20 Defects (visual inspection) + + + +
Continuity and porosity (low
21 ISO 8289 - - - -
voltage test)
Continuity and porosity (high
22 EN 14430 - - - -
voltage test)
23 Resistance to thermal shock ISO 2747 - - - -
24 Resistance to thermal shock ISO 28763:2008, Annex A + + - +
25 Resistance to thermal shock ISO 13807 - - - -
26 Resistance to heat ISO 4530 + + + +
27 Temperature class EN 1859, 4.6 - - - -
28 Resistance to impact ISO 4532 + + + +
29 Adhesion EN 10209:2013, Annex C + + + +
c
30 Abrasion resistance + + + -
31 Subsurface abrasion resistance ISO 6370-2 - - - -
32 Scratch resistance ISO 15695 - - - -
33 Scratch hardness EN 15771 - - - -
2 © ISO 2015 – All rights reserved

---------------------- Page: 14 ----------------------

SIST EN ISO 4528:2015
ISO 4528:2015(E)

Table 1 — (continued)
Number and description of enamelled article
5 6 7 8
ISO or EN
Cookware Cookware Chimneys  Tableware
No. Property
test method
(inside (outside sur- and
surfaces and  faces) flue pipes
utensils)
Methods of assessing resistance to chemical attack in various solutions
1 Cold citric acid ISO 28706-1:2008, Clause 9 + + - +
2 Cold sulfuric acid ISO 28706-1:2008, Clause 10 - - - -
3 Boiling citric acid ISO 28706-2:2008, Clause 10 + - - -
4 Boiling sulfuric acid ISO 28706-2:2008, Clause 11 - - - -
Condensing hydrochloric acid
5 ISO 28706-2:2008, Clause 12 - - - -
vapour
Condensing products of combus-
6 EN 1856–1, Annex A - - (+) -
tion vapour
7 Hot sodium hydroxide ISO 28706-4:2008, Clause 9 - - - -
8 Boiling water ISO 28706-2:2008, Clause 13 + - - -
9 Water vapour ISO 28706-2:2008, Clause 13 + - - -
10 Hot standard detergent ISO 28706-3:2008, Clause 9 - - - -
c
11 Liquid cleaners + + - +
d
12 Weathering resistance - - - -
13 Special corrosive substances ISO 28706-4 + + - +
14 Special corrosive substances ISO 28706-5 - - - -
e
15 Release of lead and cadmium ISO 4531-1/EN 1388–2 + - - +
Methods of assessing thickness and other properties
16 Thickness ISO 2178, ISO 2360 + + + +
17 Reflectivity and gloss ISO 2813 - - - -
c
18 Waviness - - - -
19 Colour ISO 105-J03/ISO 7724 (all parts) + + - +
c
20 Defects (visual inspection) + + (+) +
Continuity and porosity (low ISO 8289 - - - -
21
voltage test)
Continuity and porosity (high EN 14430 - - - -
22
voltage test)
23 Resistance to thermal shock ISO 2747 + + - -
24 Resistance to thermal shock ISO 28763:2008, Annex A - - - -
25 Resistance to thermal shock ISO 13807 - - - -
26 Resistance to heat ISO 4530 - - - -
27 Temperature class EN 1859, 4.6 - - + -
28 Resistance to impact ISO 4532 + + - +
29 Adhesion EN 10209:2013, Annex C + + (+) +
c
30 Abrasion resistance + + - +
31 Subsurface abrasion resistance ISO 6370-2 - - - -
32 Scratch resistance ISO 15695 - - - -
33 Scratch hardness EN 15771 - - - -
© ISO 2015 – All rights reserved 3

---------------------- Page: 15 ----------------------

SIST EN ISO 4528:2015
ISO 4528:2015(E)

Table 1 — (continued)
Number and description of enamelled article
9 10 11 12
ISO or EN
No. Property
Sinks Refrigerators Refrigerators Washing
test method
(inside surfaces) (outsid
...