EN 4875:2020

SLOVENSKI STANDARD
01-marec-2020
Aeronavtika - Površinske prevleke - Preskusna metoda za merjenje električne
kontaktne upornosti
Aerospace series - Surface treatments - Test method for measurement of electrical
contact resistance
Luft- und Raumfahrt - Oberflächenbehandlungen - Prüfverfahren zur Messung von
elektrischer Kontaktwiderstand
Série aérospatiale - Traitements de surface - Méthode de mesure de la résistance
électrique de contact
Ta slovenski standard je istoveten z: EN 4875:2020
ICS:
25.220.99 Druge obdelave in prevleke Other treatments and
coatings
49.040 Prevleke in z njimi povezani Coatings and related
postopki, ki se uporabljajo v processes used in aerospace
letalski in vesoljski industriji industry
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 4875
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2020
EUROPÄISCHE NORM
ICS 25.220.99; 49.040
English Version
Aerospace series - Surface treatments - Test method for
measurement of electrical contact resistance
Série aérospatiale - Traitements de surface - Méthode Luft- und Raumfahrt - Oberflächenbehandlungen -
d'essai de mesure de la résistance électrique de contact Prüfverfahren zur Messung von elektrischer
Kontaktwiderstand
This European Standard was approved by CEN on 11 November 2019.

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 4875:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Principle . 4
5 Apparatus. 4
6 Test specimen . 5
7 Procedure . 6
8 Results of electrical contact resistance . 8
9 Designation . 8
10 Test report . 8

European foreword
This document (EN 4875:2020) has been prepared by the Aerospace and Defence Industries Association
of Europe — Standardization (ASD-STAN).
After enquiries and votes carried out in accordance with the rules of this Association, this Standard has
received the approval of the National Associations and the Official Services of the member countries of
ASD, prior to its presentation to CEN.
This document shall be given the status of a national standard, either by publication of an identical text
or by endorsement, at the latest by July 2020, and conflicting national standards shall be withdrawn at
the latest by July 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.
According to the CEN-CENELEC Internal Regulations, the national standards organisations 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.
1 Scope
This document describes the electrical contact resistance testing method applicable to conductive and
non-conductive coatings applied on test specimens made of conductive materials (unless otherwise
specified) for aerospace applications. An objective of this practice is to define and control many of the
known variables in such a way that valid comparisons of the contact properties of materials can be made.
This test may be locally destructive depending on the process tested.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
 ISO Online browsing platform: available at http://www.iso.org/obp
 IEC Electropedia: available at http://www.electropedia.org/
3.1
contact resistance
resistance to current flow between two touching bodies, consisting of constriction resistance and film
resistance
4 Principle
The principle of the method involves applying a known current I to the coating, measuri
...