EN ISO 25178-2:2022
(Main)Geometrical product specifications (GPS) - Surface texture: Areal - Part 2: Terms, definitions and surface texture parameters (ISO 25178-2:2021, Corrected version 2023-11)
Geometrical product specifications (GPS) - Surface texture: Areal - Part 2: Terms, definitions and surface texture parameters (ISO 25178-2:2021, Corrected version 2023-11)
This document specifies parameters for the determination of surface texture by areal methods.
Geometrische Produktspezifikation (GPS) - Oberflächenbeschaffenheit: Flächenhaft - Teil 2: Begriffe und Kenngrößen für die Oberflächenbeschaffenheit (ISO 25178-2:2021, korrigierte Fassung 2023-11)
Dieses Dokument legt Kenngrößen für die Ermittlung der Oberflächenbeschaffenheit durch flächenhafte Messverfahren fest.
Spécification géométrique des produits (GPS) - État de surface: Surfacique - Partie 2: Termes, définitions et paramètres d'états de surface (ISO 25178-2:2021, Version corrigée 2023-11)
Le présent document spécifie les paramètres applicables à la détermination de l'état de surface au moyen de méthodes surfaciques.
Specifikacija geometrijskih veličin izdelka (GPS) - Tekstura površine: ploskovna - 2. del: Izrazi, definicije in parametri teksture površine (ISO 25178-2:2021)
Ta dokument določa parametre za ugotavljanje teksture površine s ploskovnimi metodami.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2022
Nadomešča:
SIST EN ISO 25178-2:2012
Specifikacija geometrijskih veličin izdelka (GPS) - Tekstura površine: ploskovna -
2. del: Izrazi, definicije in parametri teksture površine (ISO 25178-2:2021)
Geometrical product specifications (GPS) - Surface texture: Areal - Part 2: Terms,
definitions and surface texture parameters (ISO 25178-2:2021)
Geometrische Produktspezifikation (GPS) - Oberflächenbeschaffenheit: Flächenhaft -
Teil 2: Begriffe, Definitionen und Oberflächen-Kenngrößen (ISO 25178-2:2021)
Spécification géométrique des produits (GPS) - État de surface: Surfacique - Partie 2:
Termes, définitions et paramètres d'états de surface (ISO 25178-2:2021)
Ta slovenski standard je istoveten z: EN ISO 25178-2:2022
ICS:
17.040.20 Lastnosti površin Properties of surfaces
17.040.40 Specifikacija geometrijskih Geometrical Product
veličin izdelka (GPS) Specification (GPS)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 25178-2
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2022
EUROPÄISCHE NORM
ICS 17.040.20 Supersedes EN ISO 25178-2:2012
English Version
Geometrical product specifications (GPS) - Surface texture:
Areal - Part 2: Terms, definitions and surface texture
parameters (ISO 25178-2:2021)
Spécification géométrique des produits (GPS) - État de Geometrische Produktspezifikation (GPS) -
surface: Surfacique - Partie 2: Termes, définitions et Oberflächenbeschaffenheit: Flächenhaft - Teil 2:
paramètres d'états de surface (ISO 25178-2:2021) Begriffe, Definitionen und Oberflächen-Kenngrößen
(ISO 25178-2:2021)
This European Standard was approved by CEN on 27 November 2021.
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 25178-2:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 25178-2:2022) has been prepared by Technical Committee ISO/TC 213
"Dimensional and geometrical product specifications and verification" in collaboration with Technical
Committee CEN/TC 290 “Dimensional and geometrical product specification and verification” 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 July 2022, and conflicting national standards shall be
withdrawn at the latest by July 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 25178-2:2012.
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 25178-2:2021 has been approved by CEN as EN ISO 25178-2:2022 without any
modification.
INTERNATIONAL ISO
STANDARD 25178-2
Second edition
2021-12
Geometrical product specifications
(GPS) — Surface texture: Areal —
Part 2:
Terms, definitions and surface texture
parameters
Spécification géométrique des produits (GPS) — État de surface:
Surfacique —
Partie 2: Termes, définitions et paramètres d'états de surface
Reference number
ISO 25178-2:2021(E)
ISO 25178-2:2021(E)
© ISO 2021
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
ii
ISO 25178-2:2021(E)
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 General terms . 1
3.2 Geometrical parameter terms . 5
3.3 Geometrical feature terms . . 11
4 Field parameters .15
4.1 General . 15
4.2 Height parameters. 15
4.2.1 General .15
4.2.2 Root mean square height . 15
4.2.3 Skewness . 15
4.2.4 Kurtosis .15
4.2.5 Maximum peak height . 16
4.2.6 Maximum pit depth . 16
4.2.7 Maximum height . 16
4.2.8 Arithmetic mean height . 16
4.3 Spatial parameters . 16
4.3.1 General . 16
4.3.2 Autocorrelation length. 16
4.3.3 Texture aspect ratio . 17
4.3.4 Texture direction . 18
4.3.5 Dominant spatial wavelength . 18
4.4 Hybrid parameters . . . 18
4.4.1 General . 18
4.4.2 Root mean square gradient . 18
4.4.3 Developed interfacial area ratio . 18
4.5 Material ratio functions and related parameters . 19
4.5.1 Areal material ratio . 19
4.5.2 Inverse areal material ratio . 19
4.5.3 Material ratio height difference . 20
4.5.4 Areal parameter for stratified surfaces . 21
4.5.5 Areal material probability parameters . 23
4.5.6 Void volume . 24
4.5.7 Material volume . 25
4.6 Gradient distribution . 26
4.7 Multiscale geometric (fractal) methods .28
4.7.1 Morphological volume-scale function .28
4.7.2 Relative area . .29
4.7.3 Relative length.29
4.7.4 Scale of observation .29
4.7.5 Volume-scale fractal complexity .
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.