EN ISO 4042:2022
(Main)Fasteners - Electroplated coating systems (ISO 4042:2022)
Fasteners - Electroplated coating systems (ISO 4042:2022)
This document specifies requirements for steel fasteners with electroplated coatings and coating systems. The requirements related to dimensional properties also apply to fasteners made of copper or copper alloys.
It also specifies requirements and gives recommendations to minimize the risk of hydrogen embrittlement, see 4.4 and Annex B.
It mainly applies to fasteners with zinc and zinc alloy coating systems (zinc, zinc-nickel, zinc-iron) and cadmium, primarily intended for corrosion protection and other functional properties:
— with or without conversion coating,
— with or without sealant,
— with or without top coat,
— with or without lubricant (integral lubricant and/or subsequently added lubricant).
Specifications for other electroplated coatings and coating systems (tin, tin-zinc, copper-tin, copper-silver, copper, silver, copper-zinc, nickel, nickel-chromium, copper-nickel, copper-nickel-chromium) are included in this document only for dimensional requirements related to fasteners with ISO metric threads.
The requirements of this document for electroplated fasteners take precedence over other documents dealing with electroplating.
This document applies to steel bolts, screws, studs and nuts with ISO metric thread, to other threaded fasteners and to non-threaded fasteners such as washers, pins, clips and rivets.
NOTE Electroplating is also applied to stainless steel fasteners, e.g. for the purpose of lubrication in order to avoid galling.
Information for design and assembly of coated fasteners is given in Annex A.
This document does not specify requirements for properties such as weldability or paintability.
Verbindungselemente - Galvanisch aufgebrachte Überzugsysteme (ISO 4042: 2022)
Dieses Dokument legt Anforderungen an Verbindungselemente aus Stahl mit galvanisch aufgebrachten Überzügen und Überzugsystemen fest. Die Maßanforderungen sind auch für Verbindungselemente aus Kupfer oder Kupferlegierungen anzuwenden.
Es legt außerdem Anforderungen fest und gibt Empfehlungen, um das Risiko einer Wasserstoffversprödung auf ein Mindestmaß zu verringern; siehe 4.4 und Anhang B.
Es gilt hauptsächlich für Verbindungselemente mit Zink- und Zinklegierungsüberzugsystemen (Zink, Zink-Nickel, Zink-Eisen) und Cadmium, die vor allem für den Korrosionsschutz und weitere funktionelle Eigenschaften bestimmt sind:
— mit oder ohne Konversionsschicht;
— mit oder ohne Versiegelung;
— mit oder ohne Deckschicht;
— mit oder ohne Schmiermittel (integriertes Schmiermittel und/oder nachträglich aufgebrachtes Schmiermittel).
Die Festlegungen für weitere galvanisch aufgebrachte Überzüge und Überzugsysteme (Zinn, Zinn-Zink, Kupfer-Zinn, Kupfer-Silber, Kupfer, Silber, Kupfer-Zink, Nickel, Nickel-Chrom, Kupfer-Nickel, Kupfer-Nickel-Chrom) sind in diesem Dokument nur für Maßanforderungen in Bezug auf Verbindungselemente mit metrischem ISO Gewinde enthalten.
Die Anforderungen dieses Dokuments an Verbindungselemente mit galvanisch aufgebrachten Überzügen haben Vorrang vor anderen Dokumenten zur elektrolytischen Metallabscheidung.
Dieses Dokument ist für Schrauben und Muttern aus Stahl mit metrischem ISO Gewinde, für andere Verbindungselemente mit Gewinde sowie für Verbindungselemente ohne Gewinde, wie Scheiben, Stifte, Clips und Niete anzuwenden.
ANMERKUNG Galvanische Überzüge werden auch auf Verbindungselemente aus nichtrostendem Stahl aufgebracht, z. B. zur Schmierung, um ein Fressen zu vermeiden.
Hinweise zur konstruktiven Ausführung und zur Montage von beschichteten Verbindungselementen sind in Anhang A aufgeführt.
Dieses Dokument legt keine Anforderungen an Eigenschaften wie Schweißbarkeit oder Lackierbarkeit fest.
Fixations - Systèmes de revêtements électrolytiques (ISO 4042: 2022)
Le présent document spécifie les exigences pour les fixations en acier avec revêtements et systèmes de revêtements électrolytiques. Les exigences relatives aux caractéristiques dimensionnelles s'appliquent également aux fixations en cuivre ou en alliages de cuivre.
Il spécifie également les exigences et donne des recommandations afin de minimiser le risque de fragilisation par l'hydrogène; voir 4.4 et l'Annexe B.
Il s'applique principalement aux fixations avec revêtement de zinc et d'alliage de zinc (zinc, zinc-nickel, zinc-fer) et de cadmium ainsi qu’aux systèmes de revêtements, essentiellement destinés à la protection contre la corrosion et à l'obtention d'autres caractéristiques fonctionnelles:
— avec ou sans couche de conversion;
— avec ou sans finition «sealer»;
— avec ou sans finition «top coat»;
— avec ou sans lubrifiant (lubrifiant intégré et/ou lubrifiant additionnel).
Les spécifications concernant d'autres revêtements et systèmes de revêtements électrolytiques (étain, étain-zinc, cuivre-étain, cuivre-argent, cuivre, argent, cuivre-zinc, nickel, nickel-chrome, cuivre-nickel, cuivre-nickel-chrome) sont incluses dans le présent document uniquement pour les exigences dimensionnelles relatives aux fixations à filetage métrique ISO.
Les exigences du présent document pour les fixations avec revêtement électrolytique priment sur celles des autres documents traitant de revêtement électrolytique.
Le présent document s'applique aux fixations en acier, vis, goujons, tiges filetées et écrous à filetage métrique ISO, et autres fixations filetées et non filetées telles que les rondelles, les goupilles, les clips et les rivets.
NOTE Le revêtement électrolytique est également appliqué aux fixations en acier inoxydable, par exemple pour assurer la lubrification afin d'éviter le grippage.
Des informations sur la conception et l'assemblage des fixations revêtues sont données à l'Annexe A.
Le présent document ne spécifie pas d'exigence pour les caractéristiques telles que la soudabilité ou l'aptitude à la peinture.
Vezni elementi - Sistemi galvanskih prevlek veznih elementov (ISO 4042:2022)
Ta dokument določa zahteve za jeklene vezne elemente z galvanskimi prevlekami in sistemi galvanskih prevlek. Zahteve, povezane z dimenzijskimi lastnostmi, veljajo tudi za vezne elemente, izdelane iz bakra in bakrovih zlitin. Določa tudi zahteve in podaja priporočila za zmanjševanje tveganja za krhkost v stiku z vodikom (glej 4.4 in dodatek B). Uporablja se predvsem za sisteme cinkovih prevlek ter prevlek iz cinkovih zlitin (cink, cink-nikelj, cink-železo) in kadmija, namenjene predvsem za zaščito proti koroziji in zagotavljanje drugih funkcionalnih lastnosti: – z ali brez reakcijske prevleke; – z ali brez tesnilne mase; – z ali brez premaza; – z ali brez maziva (ki je sestavni del in/ali naknadno dodano mazivo). Specifikacije za druge galvanske prevleke in sisteme prevlek (kositer, kositer-cink, baker-kositer, baker-srebro, baker, srebro, baker-cink, nikelj, nikelj-krom, baker-nikelj, baker-nikelj-krom) so zajete v tem dokumentu samo za dimenzijske zahteve, povezane z veznimi elementi z ISO-metričnimi navoji. Zahteve tega dokumenta za galvanske vezne elemente imajo prednost pred drugimi dokumenti, ki obravnavajo galvanizacijo. Ta dokument se uporablja za jeklene vijake in matice z ISO-metričnim navojem, druge vezne elemente z navoji, ter vezne elemente brez navojev, kot so podložke, zatiči, objemke in zakovice. OPOMBA: Galvanizacija se uporablja tudi za vezne elemente iz nerjavnega jekla, npr. za mazanje, da bi se izognili lepljenju materiala z ene komponente na drugo. Informacije o projektiranju in sestavljanju prevlečenih veznih elementov so podane v dodatku A. Ta dokument ne določa zahtev za lastnosti veznih elementov, kot je varivost ali možnost barvanja.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2022
Nadomešča:
SIST EN ISO 4042:2018
Vezni elementi - Sistemi galvanskih prevlek veznih elementov (ISO 4042:2022)
Fasteners - Electroplated coating systems (ISO 4042:2022)
Verbindungselemente - Galvanisch aufgebrachte Überzugsysteme (ISO 4042: 2022)
Fixations - Systèmes de revêtements électrolytiques (ISO 4042: 2022)
Ta slovenski standard je istoveten z: EN ISO 4042:2022
ICS:
21.060.01 Vezni elementi na splošno Fasteners in general
25.220.40 Kovinske prevleke Metallic coatings
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 4042
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2022
EUROPÄISCHE NORM
ICS 21.060.01 Supersedes EN ISO 4042:2018
English Version
Fasteners - Electroplated coating systems (ISO 4042:2022)
Fixations - Systèmes de revêtements électrolytiques Verbindungselemente - Galvanisch aufgebrachte
(ISO 4042: 2022) Überzugsysteme (ISO 4042: 2022)
This European Standard was approved by CEN on 4 February 2022.
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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4042:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 4042:2022) has been prepared by Technical Committee ISO/TC 2 "Fasteners" in
collaboration with Technical Committee CEN/TC 185 “Fasteners” 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 December 2022, and conflicting national standards
shall be withdrawn at the latest by December 2022.
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 4042:2018.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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 4042:2022 has been approved by CEN as EN ISO 4042:2022 without any modification.
INTERNATIONAL ISO
STANDARD 4042
Fourth edition
2022-06
Fasteners — Electroplated coating
systems
Fixations — Systèmes de revêtements électrolytiques
Reference number
ISO 4042:2022(E)
ISO 4042:2022(E)
© ISO 2022
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
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
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ISO 4042:2022(E)
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 General characteristics of the coating . 2
4.1 Coating metals or alloys and main purposes . 2
4.2 Build-up of basic electroplated coating systems . 3
4.3 Coating systems and coating processes . 4
4.4 Internal hydrogen embrittlement . 4
4.4.1 General . 4
4.4.2 Fasteners with hardness up to 360 HV . 5
4.4.3 Fasteners with hardness above 360 HV and up to 390 HV . 5
4.4.4 Fasteners with hardness above 390 HV . 5
4.4.5 Fasteners in accordance with ISO 898-1, ISO 898-2 and ISO 898-3 . 6
4.4.6 Case-hardened fasteners . . . 7
4.4.7 Work hardened fasteners and fasteners with threads rolled after heat
treatment . 8
4.4.8 Fasteners with bainitic structure . 9
4.5 Baking . 9
5 Corrosion protection and testing .9
5.1 General . 9
5.2 Neutral salt spray test (NSS) for zinc-based coating systems . 10
5.3 Sulfur dioxide test (Kesternich test) . 11
5.4 Bulk handling, automatic processes such as feeding and/or sorting, storage and
transport .12
6 Dimensional requirements and testing .12
6.1 General .12
6.2 Fasteners with ISO metric thread .12
6.2.1 Coating thickness .12
6.2.2 Gaugeability and assemblability . 13
6.3 Other fasteners . 13
6.4 Test methods for thickness determination . 14
7 Mechanical and physical properties and testing .16
7.1 General . 16
7.2 Appearance . 16
7.3 Corrosion resistance related to temperature . 16
7.4 Torque/clamp force relationship . 16
7.5 Determination of hexavalent chromium . 16
8 Applicability of tests .17
8.1 General . 17
8.2 Tests mandatory for each lot . 17
8.3 Tests for in-process control . . 17
8.4 Tests to be performed when specified by the purchaser. 17
9 Designation system .17
9.1 General . 17
9.2 Designation of electroplated coating systems for the order . 18
9.3 Examples of designation of hexavalent chromium free electroplated coating
systems for fasteners . 20
9.4 Designation of fasteners with electroplated coating systems for labelling . 21
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ISO 4042:2022(E)
10 Ordering requirements for electroplating .21
11 Storage conditions .
...
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