Geometrical product specifications (GPS) - Surface texture: Profile - Part 3: Specification operators (ISO 21920-3:2021)

This document specifies the complete specification operator for surface texture by profile methods.

Geometrische Produktspezifikation (GPS) - Oberflächenbeschaffenheit: Profile - Teil 3: Spezifikationsoperatoren (ISO 21920-3:2021)

Dieses Dokument legt den vollständigen Spezifikationsoperator für die Oberflächenbeschaffenheit nach dem Tastschnittverfahren fest.

Spécification géométrique des produits (GPS) - État de surface: Méthode du profil - Partie 3: Opérateurs de spécification (ISO 21920-3:2021)

Le présent document spécifie l’opérateur de spécification complet pour l’état de surface par les méthodes de profil.

Specifikacija geometrijskih veličin izdelka (GPS) - Tekstura površine: profil - 3. del: Operatorji specifikacij (ISO 21920-3:2021)

Ta dokument določa popolni operator specifikacij za teksturo površine s profilnimi metodami.

General Information

Status
Published
Publication Date
18-Jan-2022
Withdrawal Date
30-Jul-2022
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
19-Jan-2022
Due Date
01-Nov-2019
Completion Date
19-Jan-2022

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SLOVENSKI STANDARD
01-marec-2022
Nadomešča:
SIST EN ISO 4288:2000
Specifikacija geometrijskih veličin izdelka (GPS) - Tekstura površine: profil - 3. del:
Operatorji specifikacij (ISO 21920-3:2021)
Geometrical product specifications (GPS) - Surface texture: Profile - Part 3: Specification
operators (ISO 21920-3:2021)
Geometrische Produktspezifikation (GPS) - Oberflächenbeschaffenheit: Profile - Teil 3:
Spezifikationsoperatoren (ISO 21920-3:2021)
Spécification géométrique des produits (GPS) - État de surface: Méthode du profil -
Partie 3: Opérateurs de spécification (ISO 21920-3:2021)
Ta slovenski standard je istoveten z: EN ISO 21920-3:2022
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 21920-3
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2022
EUROPÄISCHE NORM
ICS 17.040.40 Supersedes EN ISO 4288:1997
English Version
Geometrical product specifications (GPS) - Surface texture:
Profile - Part 3: Specification operators (ISO 21920-
3:2021)
Spécification géométrique des produits (GPS) - État de Geometrische Produktspezifikation (GPS) -
surface: Méthode du profil - Partie 3: Opérateurs de Oberflächenbeschaffenheit: Profile - Teil 3:
spécification (ISO 21920-3:2021) Spezifikationsoperatoren (ISO 21920-3:2021)
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 21920-3:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 21920-3:2022) 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 4288:1997.
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 21920-3:2021 has been approved by CEN as EN ISO 21920-3:2022 without any
modification.
INTERNATIONAL ISO
STANDARD 21920-3
First edition
2021-12
Geometrical product specifications
(GPS) — Surface texture: Profile —
Part 3:
Specification operators
Spécification géométrique des produits (GPS) — État de surface:
Méthode du profil —
Partie 3: Opérateurs de spécification
Reference number
ISO 21920-3:2021(E)
ISO 21920-3:2021(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 21920-3:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Complete specification operator . 2
4.1 Introduction . 2
4.2 General . 2
4.3 General default settings . 2
4.4 Default settings based on the specification . 3
4.4.1 General rules . 3
4.4.2 Default settings based on N or Scn . 4
ic
4.4.3 Default settings for Ra, Rq, Rz, Rp, Rv, Rzx and Rt based on the upper
tolerance limit . 5
4.4.4 Default settings for Ra, Rq, Rz, Rp, Rv, Rzx and Rt based on bilateral
tolerance limits . 6
4.4.5 Default settings for Ra, Rq, Rz, Rp, Rv, Rzx and Rt based on the lower
tolerance limit . 7
4.4.6 Default settings for Pt . 7
5 Default attribute values for parameters from ISO 21920-2 . 8
5.1 General . 8
5.2 Default attribute values for height parameters and spatial parameters . 8
5.3 Default attribute values for material ratio functions and related parameters . 8
5.4 Default attribute values for volume parameters . 9
5.5 Default attribute values for feature parameters . 9
6 Default units for parameters from ISO 21920-2 . 9
6.1 General . 9
6.2 Height parameters. 10
6.3 Spatial parameters . 10
6.4 Hybrid parameters . . . 10
6.5 Material ratio functions and related parameters . 10
6.6 Volume parameters . 11
6.7 Feature parameters . 11
Annex A (informative) How to determine specification operators .13
Annex B (informative) Examples of the determination of default settings .15
Annex C (informative) Major changes from ISO 4288 .23
Annex D (informative) Settings for profile surface texture evaluation in the absence of a
specification .24
Annex E (informative) Overview of profile and areal standards in the GPS matrix model .27
Annex F (informative) Relation with the GPS matrix .28
Bibliography .29
iii
ISO 21920-3:2021(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 accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attent
...

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