EN ISO 4042:2018
(Main)Fasteners - Electroplated coating systems (ISO 4042:2018)
Fasteners - Electroplated coating systems (ISO 4042:2018)
This document specifies requirements for electroplated coatings and coating systems on steel fasteners. 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 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.
This document applies to bolts, screws, studs and nuts with ISO metric thread, to fasteners with non-ISO metric thread, and to non-threaded fasteners such as washers, pins, clips and rivets.
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.
NOTE Other International Standards specify differing electroplating processes. For electroplating of fasteners, the requirements of this document apply, unless otherwise agreed.
Verbindungselemente - Galvanisch aufgebrachte Überzugsysteme (ISO 4042:2018)
Dieses Dokument legt Anforderungen an galvanisch aufgebrachte Überzüge und Überzugsysteme auf Ver-bindungselementen aus Stahl fest. Die Maßanforderungen gelten auch für Verbindungselemente aus Kupfer oder Kupferlegierungen.
Es legt außerdem Anforderungen fest und gibt Empfehlungen, um das Risiko der Wasserstoffversprödung zu minimieren; siehe 4.4 und Anhang B.
Es gilt hauptsächlich für Zink- und Zinklegierungsüberzugsysteme (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 Schmier-mittel).
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 metri-schem ISO-Gewinde enthalten.
Dieses Dokument gilt für Schrauben und Muttern mit metrischem ISO-Gewinde, für Verbindungselemente mit nicht metrischem ISO-Gewinde und für Verbindungselemente ohne Gewinde, wie Scheiben, Stifte, Clips und Niete.
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.
ANMERKUNG Andere Internationale Normen legen abweichende Galvanikprozesse fest. Für das Aufbringen galvanischer Überzüge auf Verbindungselemente gelten die Anforderungen dieses Dokumentes, sofern nicht anders vereinbart.
Fixations - Systèmes de revêtements électrolytiques (ISO 4042:2018)
Le présent document spécifie les exigences applicables aux revêtements et aux systèmes de revêtement électrolytiques destinés aux fixations en acier. Les exigences portant sur les caractéristiques dimensionnelles s'appliquent également aux fixations en cuivre ou en alliages de cuivre.
Il spécifie également les exigences et donne des recommandations visant à réduire le risque de fragilisation par l'hydrogène; voir 4.4 et Annexe B.
Il s'applique principalement aux systèmes de revêtement de zinc et d'alliage de zinc (zinc, zinc-nickel, zinc-fer) et de cadmium, 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 finitions «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 revêtement 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.
Le présent document s'applique aux vis, goujons, tiges filetées et écrous à filetage métrique ISO, aux fixations à filetage non métrique ISO et aux fixations non filetées telles que les rondelles, les goupilles, les clips et les rivets.
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.
NOTE Des procédés de revêtement électrolytique différents sont spécifiés dans d'autres Normes internationales. Pour le revêtement électrolytique des fixations, les exigences du présent document s'appliquent, sauf accord contraire.
Mehanski vezni elementi - Sistemi galvanskih prevlek veznih elementov (ISO 4042:2018)
Ta dokument določa zahteve za galvanske prevleke veznih elementov in sisteme prevlek na mehanskih veznih elementih. 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:
– s konverzijskim premazom ali brez njega;
– s tesnilom ali brez njega;
– z vrhnjim premazom ali brez njega;
– z mazivom (integriranim ali naknadno dodanim) ali brez njega.
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.
Ta dokument se uporablja za vijake in matice z ISO-metričnim navojem, vezne elemente z metričnimi navoji, ki niso del ISO, ter vezne elemente brez navojev, kot so podložke, zatiči, objemke in zakovice.
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.
OPOMBA: Različne postopke galvanizacije določajo drugi mednarodni standardi. Če ni dogovorjeno drugače, za galvanizirane vezne elemente veljajo zahteve tega dokumenta.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2018
1DGRPHãþD
SIST EN ISO 4042:2001
Mehanski vezni elementi - Sistemi galvanskih prevlek veznih elementov (ISO
4042:2018)
Fasteners - Electroplated coating systems (ISO 4042:2018)
Verbindungselemente - Galvanisch aufgebrachte Überzugsysteme (ISO 4042:2018)
Fixations - Systèmes de revêtements électrolytiques (ISO 4042:2018)
Ta slovenski standard je istoveten z: EN ISO 4042:2018
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
September 2018
EUROPÄISCHE NORM
ICS 21.060.01 Supersedes EN ISO 4042:1999
English Version
Fasteners - Electroplated coating systems (ISO 4042:2018)
Fixations - Systèmes de revêtements électrolytiques Verbindungselemente - Galvanisch aufgebrachte
(ISO 4042:2018) Überzugsysteme (ISO 4042:2018)
This European Standard was approved by CEN on 4 July 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 4042:2018 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 4042:2018) 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 March 2019, and conflicting national standards shall
be withdrawn at the latest by March 2019.
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 4042:1999.
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 4042:2018 has been approved by CEN as EN ISO 4042:2018 without any modification.
INTERNATIONAL ISO
STANDARD 4042
Third edition
2018-08
Fasteners — Electroplated coating
systems
Fixations — Systèmes de revêtements électrolytiques
Reference number
ISO 4042:2018(E)
©
ISO 2018
ISO 4042:2018(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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Phone: +41 22 749 01 11
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Published in Switzerland
ii © ISO 2018 – All rights reserved
ISO 4042:2018(E)
Contents Page
Foreword .v
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 General characteristics of the coating . 3
4.1 Coating metals or alloys and main purposes . 3
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 below 360 HV . 5
4.4.3 Fasteners with hardness equal to and 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 Baking and test requirements for case-hardened and tempered screws . 7
4.4.7 Work-hardened fasteners . 8
4.4.8 Fasteners with bainitic structure . 8
4.5 Baking . 8
5 Corrosion protection and testing . 8
5.1 General . 8
5.2 Neutral salt spray test (NSS) for zinc based coating systems . 9
5.3 Sulfur dioxide test (Kesternich test) .10
5.4 Bulk handling, automatic processes such as feeding and/or sorting, storage and
transport . .11
6 Dimensional requirements and testing .11
6.1 General .11
6.2 Fasteners with ISO metric thread .11
6.2.1 Coating thickness .11
6.2.2 Gaugeability and assemblability .12
6.3 Other fasteners .12
6.4 Test methods for thickness determination .13
7 Mechanical and physical properties and testing .15
7.1 General .15
7.2 Appearance .15
7.3 Corrosion resistance related to temperature .15
7.4 Torque/clamp force relationship .15
7.5 Determination of hexavalent chromium .15
8 Applicability of tests .15
8.1 General .15
8.2 Tests mandatory for each lot .15
8.3 Tests for in-process control.16
8.4 Tests to be performed when specified by the purchaser .16
9 Designation system .16
9.1 General .16
9.2 Designation of electroplated coating systems for the order .17
9.3 Examples of designation of hexavalent chromium free electroplated coating
systems for fasteners .18
9.4 Designation of fasteners with electroplated coating systems for labelling .19
10 Ordering requirements for electroplating .19
ISO 4042:2018(E)
11 Storage conditions .20
Annex A (informative) Design aspects and assembly of coated fasteners .
...
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