EN ISO 8442-9:2018

Materials and articles in contact with foodstuffs - Cutlery and table holloware - Part 9: Requirements for ceramic knives (ISO 8442-9:2018)

ISO 8442-9:2018 specifies material and performance requirements and test method of ceramic blades of knives intended for use in the preparation of food.

Werkstoffe und Gegenstände in Kontakt mit Lebensmitteln - Schneidwaren und Tafelgeräte - Teil 9: Anforderungen an keramische Messer (ISO 8442-9:2018)

Dieses Dokument legt Anforderungen an das Material und die Gebrauchstauglichkeit sowie Prüfverfahren für keramische Messer zur Zubereitung von Speisen fest. Die Schnittleistung der Keramikklinge, die Griffeigenschaften und die Festigkeit der Klingenhalterung müssen die Anforderungen nach ISO 8442-1 erfüllen.

Matériaux et objets en contact avec les denrées alimentaires - Coutellerie et orfèvrerie de table - Partie 9: Exigences relatives aux couteaux en céramiques (ISO 8442-9:2018)

L'ISO 8442-9:2018 spécifie les exigences afférentes aux matériaux constitutifs et aux performances des lames céramiques de couteaux destinés à être utilisés lors de la préparation des denrées alimentaires.

Materiali in predmeti v stiku z živili - Pribor in namizna posoda - 9. del: Zahteve za keramične nože (ISO 8442-9:2018)

Ta del določa splošne zahteve in preskusne metode za keramične nože.

General Information

• Status: Published
• Publication Date: 13-Mar-2018
• Withdrawal Date: 29-Sep-2018
• ICS: 67.250 - Materials and articles in contact with foodstuffs
• ICS: 97.040.60 - Cookware, cutlery and flatware
• Technical Committee: CEN/TC 194 - Utensils in contact with food
• Drafting Committee: CEN/TC 194 - Utensils in contact with food
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 14-Mar-2018
• Due Date: 03-Oct-2019
• Completion Date: 14-Mar-2018
• Ref Project: SIST EN ISO 8442-9:2018 - Materials and articles in contact with foodstuffs - Cutlery and table holloware - Part 9: Requirements for ceramic knives (ISO 8442-9:2018)

Overview

EN ISO 8442-9:2018 - Materials and articles in contact with foodstuffs: Cutlery and table holloware - Part 9: Requirements for ceramic knives (ISO 8442-9:2018) defines material, construction and performance requirements and associated test methods for ceramic blades intended for food preparation. The standard is part of the ISO 8442 series and is endorsed by CEN for use across Europe.

Key topics and technical requirements

• Scope: Applies to ceramic blades of knives for food preparation; covers materials, construction, performance and safety instructions.
• Materials & construction: Blades must enable compliance with performance requirements; handle strength and attachment follow ISO 8442-1.
• Porosity: Maximum porosity ≤ 1.5 %; largest projected pore diameter ≤ 25 µm; no observable inclusion/structure defects (see Annex A metallography).
• Surface integrity: No cracks, pores or visible defects after penetrant testing (ISO 3452-1).
• Cutting edge geometry: Included angle ≤ 40°; edge thickness ≤ 0.46 mm measured 1 mm from the edge (with measurement position specified).
• Hardness: Vickers hardness ≥ 1 100 HV3; measurements at specified trisection points on the blade (ISO 14705).
• Sharpness & edge retention: Sharpness parameter z ≥ 60 mm; edge retention z ≥ 300 mm (test per ISO 8442-5).
• Impact resistance: Visual no-chipping requirement after impact testing using a Leeb-type impact device (ISO 16859-1); test points and procedure specified.
• Coating/print bonding strength: Abrasion test using P180 abrasive pad; coating/printing must not expose substrate or delaminate.
• Durability tests: Dishwasher safety (EN 12875-1) and thermal shock resistance (EN 1183) requirements and methods are included.
• Safety: Requirements to avoid defects that could cause injury (e.g., burrs, deep scratches, deformation).

Applications and who uses it

• Manufacturers & designers: Specify materials, blade geometry and manufacturing tolerances to meet compliance and performance claims.
• Quality control & testing laboratories: Implement the defined test methods (hardness, sharpness, impact, bonding) for product validation, incoming inspection and batch release.
• Regulatory and procurement teams: Use the standard as a reference for conformity, food-contact safety and purchase specifications for ceramic kitchen knives.
• Retailers & importers: Verify product claims and ensure consumer safety and durability.
• R&D: Guide materials selection and process development for advanced ceramic blades.

Related standards

• ISO 8442-1 (cutlery requirements)
• ISO 8442-5 (sharpness and edge retention test)
• ISO 14705 (hardness test for monolithic ceramics)
• ISO 3452-1 (penetrant testing)
• EN 12875-1 (dishwashing resistance)
• EN 1183 (thermal shock testing)

This concise summary helps product teams, QC labs and procurement professionals find and apply the EN ISO 8442-9:2018 requirements for safe, durable ceramic knives used in contact with food.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2018
0DWHULDOLLQSUHGPHWLYVWLNX]åLYLOL3ULERULQQDPL]QDSRVRGDGHO=DKWHYH]D
NHUDPLþQHQRåH,62
Materials and articles in contact with foodstuffs - Cutlery and table holloware - Part 9:
Requirements for ceramic knives (ISO 8442-9:2018)
Werkstoffe und Gegenstände in Kontakt mit Lebensmitteln - Schneidwaren und
Tafelgeräte - Teil 9: Anforderungen für keramische Messer (ISO 8442-9:2018)
Matériaux et objets en contact avec les denrées alimentaires - Coutellerie et orfèvrerie
de table - Partie 9: Exigences relatives aux couteaux en céramiques (ISO 8442-9:2018)
Ta slovenski standard je istoveten z: EN ISO 8442-9:2018
ICS:
67.250 Materiali in predmeti v stiku z Materials and articles in
živili contact with foodstuffs
97.040.60 Kuhinjska posoda, jedilni Cookware, cutlery and
servisi in jedilni pribor flatware
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 8442-9
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2018
EUROPÄISCHE NORM
ICS 67.250; 97.040.60
English Version
Materials and articles in contact with foodstuffs - Cutlery
and table holloware - Part 9: Requirements for ceramic
knives (ISO 8442-9:2018)
Matériaux et objets en contact avec les denrées Werkstoffe und Gegenstände in Kontakt mit
alimentaires - Coutellerie et orfèvrerie de table - Partie Lebensmitteln - Schneidwaren und Tafelgeräte - Teil 9:
9: Exigences relatives aux couteaux en céramiques (ISO Anforderungen für keramische Messer (ISO 8442-
8442-9:2018) 9:2018)
This European Standard was approved by CEN on 10 March 2018.

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: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8442-9:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
European foreword
This document (EN ISO 8442-9:2018) has been prepared by Technical Committee ISO/TC 186 “Cutlery
and table and decorative metal hollow-ware” in collaboration with Technical Committee CEN/TC 194
“Utensils in contact with food” the secretariat of which is held by AFNOR.
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 September 2018, and conflicting national standards
shall be withdrawn at the latest by September 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.
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 8442-9:2018 has been approved by CEN as EN ISO 8442-9:2018 without any
modification.
INTERNATIONAL ISO
STANDARD 8442-9
First edition
2018-02
Materials and articles in contact
with foodstuffs — Cutlery and table
holloware —
Part 9:
Requirements for ceramic knives
Matériaux et objets en contact avec les denrées alimentaires —
Coutellerie et orfèvrerie de table —
Partie 9: Exigences relatives aux couteaux en céramique
Reference number
ISO 8442-9:2018(E)
©
ISO 2018
ISO 8442-9:2018(E)
© ISO 2018
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
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Published in Switzerland
ii © ISO 2018 – All rights reserved

ISO 8442-9:2018(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Materials and construction . 2
5 Performance requirements . 2
5.1 Hardness of ceramic blades . 2
5.2 Sharpness and edge retention . 2
5.3 Impact resistance of inclined plane of ceramic blades . 3
5.3.1 General. 3
5.3.2 Apparatus . 3
5.3.3 Procedure . 3
5.4 Bonding strength of the coating and printing of ceramic blades . 3
5.4.1 General. 3
5.4.2 Apparatus . 3
5.4.3 Procedure . 3
5.5 Dishwasher safety . 4
5.6 Resistance to thermal shock . 4
6 Safety instructions . 4
Annex A (normative) Metallography examination . 5
Annex B (normative) Schematic diagram of impact resistance of inclined plane of ceramic blade .6
Annex C (normative) Bonding strength test apparatus for the coating and printing of
ceramic blade . 8
Bibliography . 9
ISO 8442-9:2018(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 acco
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