SIST EN ISO 8289-1:2020

Vitreous and porcelain enamels - Low-voltage test for detecting and locating defects - Part 1: Swab test for non-profiled surfaces (ISO 8289-1:2020)

This document specifies two low voltage tests for detecting and locating defects that extend to the basis metal in vitreous and porcelain enamel coatings.
Method A (electrical) is applicable to the rapid detection and determination of the general location of defects. Method B (optical), based on colour effects, is applicable to the more precise detection of defects and their exact locations. Both methods are commonly applied to flat surfaces. For more intricate shapes, such as undulated and/or corrugated surfaces, ISO 8289-2 is applicable.
NOTE 1  Selection of the correct test method is critical to distinguish the areas of increased conductivity detected by method B from actual pores that extend to the basis metal, which can be detected by both methods.
NOTE 2  The low voltage test is a non-destructive method of detecting defects and, therefore, is completely different from the high voltage test specified in ISO 2746. The results of the high and low voltage tests are not comparable and will differ.

Emails und Emaillierungen - Niedrigspannungsprüfung zum Nachweis und Lokalisieren von Fehlstellen - Teil 1: Prüfung von nicht-profilierten Oberflächen (ISO 8289-1:2020)

Dieses Dokument legt zwei Niedrigspannungsprüfungen zum Nachweisen und Lokalisieren von bis zum Grundmetall durchgehenden Fehlstellen in Email-Überzügen fest.
Verfahren A (elektronisches Verfahren) ist anwendbar für den raschen Nachweis und die Grobbestimmung der Lage der Fehlstellen. Verfahren B (optisches Verfahren), das auf Farbeffekten beruht, ist geeignet für den präziseren Nachweis von Fehlstellen und ihrer exakten Lage. Beide Verfahren werden üblicherweise auf ebenen Oberflächen angewendet. Bei komplizierteren Formen, wie beispielsweise gewellten und/oder geriffelten Oberflächen, gilt ISO 8289 2.
ANMERKUNG 1   Die Auswahl des richtigen Prüfverfahrens ist entscheidend, um die Bereiche erhöhter Leitfähigkeit, die mit dem Verfahren B nachgewiesen werden, von tatsächlichen Poren, die bis zum Grundmetall durchgehen und mit beiden Verfahren nachgewiesen werden können, zu unterscheiden.
ANMERKUNG 2   Die Niedrigspannungsprüfung ist ein zerstörungsfreies Verfahren für den Nachweis von Fehlstellen und unterscheidet sich daher von der Hochspannungsprüfung nach ISO 2746. Die Ergebnisse der Hoch- und der Niedrigspannungsprüfung sind nicht vergleichbar und weichen voneinander ab.

Émaux vitrifiés - Essai à basse tension pour la détection et la localisation des défauts - Partie 1: Essai avec tampon pour les surfaces non profilées (ISO 8289-1:2020)

Le présent document spécifie deux essais à basse tension permettant de détecter et de localiser les défauts s'étendant jusqu'au métal de base sur les revêtements en émail vitrifié.
La méthode A (électrique) s'applique à la détection rapide et la détermination de la localisation globale des défauts. La méthode B (optique), basée sur des effets de couleur, s'applique à la détection plus sensible des défauts et à leur localisation exacte. Les deux méthodes sont généralement appliquées aux surfaces planes. Pour des formes plus complexes telles que les surfaces ondulées et/ou présentant des sinuosités, l'ISO 8289-2 s'applique.
NOTE 1    Le choix de la méthode d'essai appropriée est essentiel pour distinguer les zones de conductivité accrue détectées par la méthode B, des pores effectifs qui s'étendent jusqu'au métal de base, lesquels peuvent être détectés par les deux méthodes.
NOTE 2    L'essai à basse tension est une méthode d'essai non destructif permettant la détection des défauts et n'a donc rien à voir avec l'essai à haute tension spécifié dans l'ISO 2746. Il n'est par conséquent pas possible de comparer les résultats des essais des deux méthodes.

Steklasti in porcelanski emajli - Nizkonapetostni preskus za odkrivanje in lociranje napak - 1. del: Preskus za neprofilirane površine (ISO 8289-1:2020)

General Information

• Status: Published
• Public Enquiry End Date: 19-May-2019
• Publication Date: 06-Apr-2020
• ICS: 25.220.50 - Enamels
• Technical Committee: IPKZ - Protection of metals against corrosion
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 05-Mar-2020
• Due Date: 10-May-2020
• Completion Date: 07-Apr-2020
• Ref Project: EN ISO 8289-1:2020 - Vitreous and porcelain enamels - Low-voltage test for detecting and locating defects - Part 1: Swab test for non-profiled surfaces (ISO 8289-1:2020)

Relations

• Replaces: SIST EN ISO 8289:2002 - Vitreous and porcelain enamels - Low voltage test for detecting and locating defects (ISO 8289:2000)
• Effective Date: 01-May-2020

Overview

EN ISO 8289-1:2020 - "Vitreous and porcelain enamels - Low-voltage test for detecting and locating defects - Part 1: Swab test for non-profiled surfaces" specifies two low-voltage swab test methods for detecting defects (pores, cracks, spalls) that extend to the base metal in enamel coatings on flat, non-profiled surfaces. The standard defines both an electrical screening method (Method A) and an optical colour-reaction method (Method B), test reagents, apparatus, procedures and result reporting.

Key topics and technical requirements

• Scope: Low-voltage, non-destructive detection and localisation of defects in vitreous and porcelain enamels on non-profiled (flat) surfaces.
• Two complementary methods:
  • Method A (electrical): Rapid detection and general localisation. Uses a 9 V ±1 V power source, sponge test electrode (rough scan ≤100 cm²; fine location ≈1 cm²), and a microammeter or acoustic circuit that signals when enamel resistance falls below 90 kΩ ±9 kΩ. Scan speed ≤ 0.2 m/s.
  • Method B (optical): Precise location using colour effects. Uses a 24 V ±4 V DC source, wet paper electrode (≥500 cm²), and a reagent containing sodium nitrite; for colour indication add phenolphthalein ethanolic solution (0.5 %), 4 ml. Apply for 2 minutes, then read red spots within 1 minute of switching off power.
• Test reagent: Dissolve 3.0 g ±0.1 g sodium nitrite in 100 ml tap water plus two drops detergent. Alternative soluble salts permitted if final reagent conductivity = 35 mS ±3 mS and pH = 7.5 ±1. Safety warning for sodium nitrite and phenolphthalein.
• Specimen prep & reporting: Test area must include exposed metal for negative electrode contact; clean and dry per standard. Results are reported as defects per square metre using N = S / A (S = defects found, A = test area in m²).
• Important notes: Choosing the correct method is critical - Method B can show areas of increased conductivity that are not actual pores. Low-voltage results are not comparable with high-voltage tests (ISO 2746).

Applications and users

• Quality control and inspection of enamelled cookware, domestic appliances, industrial vessels, panels and coated components.
• Users: enamel manufacturers, coating and QA laboratories, third‑party inspectors, R&D and production engineers focused on enamel integrity and corrosion protection.
• Practical value: fast on-site screening (Method A) and precise defect mapping for repair or acceptance decisions (Method B).

Related standards

• ISO 8289-2 - for profiled, undulated or corrugated surfaces.
• ISO 2746 - high-voltage test for enamel defects (not comparable to low-voltage methods).
• IEC 60086-2 - referenced for battery types used in test apparatus.

Keywords: EN ISO 8289-1:2020, low-voltage test, swab test, vitreous and porcelain enamels, defect detection, method A, method B, non-profiled surfaces.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2020
Nadomešča:
SIST EN ISO 8289:2002
Steklasti in porcelanski emajli - Nizkonapetostni preskus za odkrivanje in lociranje
napak - 1. del: Preskus za neprofilirane površine (ISO 8289-1:2020)
Vitreous and porcelain enamels - Low-voltage test for detecting and locating defects -
Part 1: Swab test for non-profiled surfaces (ISO 8289-1:2020)
Emails und Emaillierungen - Niedrigspannungsprüfung zum Nachweis und Lokalisieren
von Fehlstellen - Teil 1: Prüfung von nicht-profilierten Oberflächen (ISO 8289-1:2020)
Émaux vitrifiés - Essai à basse tension pour la détection et la localisation des défauts -
Partie 1: Essai avec tampon pour les surfaces non profilées (ISO 8289-1:2020)
Ta slovenski standard je istoveten z: EN ISO 8289-1:2020
ICS:
25.220.50 Emajlne prevleke Enamels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 8289-1
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2020
EUROPÄISCHE NORM
ICS 25.220.50 Supersedes EN ISO 8289:2001
English Version
Vitreous and porcelain enamels - Low-voltage test for
detecting and locating defects - Part 1: Swab test for non-
profiled surfaces (ISO 8289-1:2020)
Émaux vitrifiés - Essai à basse tension pour la Emails und Emaillierungen - Niedrigspannungsprüfung
détection et la localisation des défauts - Partie 1: Essai zum Nachweis und Lokalisieren von Fehlstellen - Teil
avec tampon pour les surfaces non profilées (ISO 8289- 1: Prüfung von nicht-profilierten Oberflächen (ISO
1:2020) 8289-1:2020)
This European Standard was approved by CEN on 11 February 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 8289-1:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 8289-1:2020) 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, including for corrosion protection and corrosion testing of metals and alloys”
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 2020, and conflicting national standards shall
be withdrawn at the latest by August 2020.
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 8289:2001.
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 8289-1:2020 has been approved by CEN as EN ISO 8289-1:2020 without any
modification.
INTERNATIONAL ISO
STANDARD 8289-1
First edition
2020-02
Vitreous and porcelain enamels —
Low-voltage test for detecting and
locating defects —
Part 1:
Swab test for non-profiled surfaces
Émaux vitrifiés — Essai à basse tension pour la détection et la
localisation des défauts —
Partie 1: Essai avec tampon pour les surfaces non profilées
Reference number
ISO 8289-1:2020(E)
©
ISO 2020
ISO 8289-1:2020(E)
© 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
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Published in Switzerland
ii © ISO 2020 – All rights reserved

ISO 8289-1:2020(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Test reagent . 2
6 Apparatus . 2
6.1 Method A . 2
6.2 Method B . 2
7 Test specimen . 2
8 Procedure. 3
8.1 Electrical detection (method A) . 3
8.2 Optical detection (method B) . 3
9 Expression of results . 3
10 Test report . 3
Bibliography . 5
ISO 8289-1:2020(E)
Foreword
ISO (the Interna
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