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Calibration of Roughness Parameters

Working Group 5.14

Revision of the standards in 2D roughness measurement technology

 

The standards for profile roughness measurement have been revised and brought together in the new three-part series of standards ISO 21920, which was published in the course of 2022 and replaces well-known standards such as e.g. ISO 4287, ISO 4288 and ISO 13565-2 and -3. Calculation rules have been adapted to technical progress and made more precise in many places. Some of the filtering via the ISO 16610 series of standards is newly regulated, for example for the characterization of the contact area of stratified surfaces (so-called Rk parameters), which sometimes lead to significant differences between the old Rk parameters (according to ISO 13565-2 with filtering according to ISO 13565-1) and the new ones (according to ISO 21920-2 with filtering according to ISO 16610-31).
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A transition phase of several years is assumed for the general implementation of the new standards. Consequently, both the old and now formally withdrawn standards as well as the new standards and unchanged standards are listed below.
This list was compiled 2023-03-07. For an up-to-date overview of standardization, please refer to Opens external link in new windowiso.org. For the German adaption of these ISO standards, please refer to Opens external link in new windowdin.de or Beuth Verlag Publishing Company Opens external link in new windowbeuth.de.

Standards in the 2D roughness measuring techniques


ISO 3274
Geometrical product specification (GPS) Surface texture: Profile method; Nominal characteristics of contact stylus instruments. Technical Corrigendum 1; 1996
with Technical Corrigendum 1 from 1998

ISO 4287 [withdrawn, replaced by ISO 21920-2]
Geometrical product specification (GPS) Surface texture: Profile method; Terms, definitions and surface texture parameters; 1997
with Technical Corrigendum 1 from 1998, Technical Corrigendum 2 from 2005 and Amendment 1 from 2009

ISO 4288 [withdrawn, replaced by ISO 21920-3]
Geometrical product specification (GPS) Surface texture: Profile method; Rules and procedures for the assessment of surface texture; 1996
with Technical Corrigendum 1 from 1998

ISO 5436-1
Geometrical product specification (GPS) – Surface texture: Measurement standards – Part 1: Material measures; 2000

ISO 5436-2
Geometrical product specification (GPS) – Surface texture: Profile method; Measurement standards – Part 2: Software measurement standards; 2012

ISO 5458
Geometrical product specification (GPS) – Geometrical tolerancing – Pattern and combined geometrical specification; 2018

ISO 8785
Geometrical product specification (GPS) – Surface imperfections – Term, definitions and parameters; 1998

EN 10049
European standard. Measurement of roughness average Ra and peak count RPc on metallic flat products; 2013-11.

ISO 12085
Geometrical product specification (GPS) – Surface texture: Profile method – Motif parameters; 1996
with Technical Corrigendum 1 from 1998

ISO 12179
Geometrical product specifications (GPS) – Surface texture: Profile method – Calibration of contact (stylus) instruments; 2021

ISO 13565-1
Geometrical product specification (GPS) – Surface texture: Profile method; Surfaces having stratified functional properties – Part 1: Filtering and general measurement conditions; 1996
with Technical Corrigendum 1 from 1998
Note: According to the new ISO 21920-2, a robust Gaussian regression filter as specified in ISO 16610-31 needs to be applied instead of the former special filter defined in ISO 13565-1, before the so-called Rk-parameters are calculated. This leads to a different position of the centre line and thus results in some cases in significantly different Rk values.

ISO 13565-2 [withdrawn, replaced by ISO 21920-2]
Geometrical product specification (GPS) – Surface texture: Profile method; Surfaces having stratified functional properties – Part 2: Height characterization using the linear material ratio curve; 1996
with Technical Corrigendum 1 from 1998

ISO 13565-3 [withdrawn, replaced by ISO 21920-2]
Geometrical product specification (GPS) – Surface texture: Profile method; Surfaces having stratified functional properties – Part 3: Height characterisation using material probability curve; 1998

ISO 16610-21
Geometrical product specification (GPS) – Filtration – Part 21: Linear profile filters: Gaussian filters; 2011

ISO 16610-31
Geometrical product specification (GPS) – Filtration – Part 23: Robust profile filters: Gaussian regression filters; 2016

ISO 21920-1 [NEW, replaces ISO 1302]
Geometrical product specifications (GPS) –Surface texture: Profile –Part 1: Indication of surface texture; 2021

ISO 21920-2 [NEW, replaces ISO 4287, ISO 13565-2 and -3]
Geometrical product specifications (GPS) –Surface texture: Profile –Part 2: Terms, definitions and surface texture parameters; 2021

ISO 21920-3 [NEW, replaces ISO 4288]
Geometrical product specifications (GPS) –Surface texture: Profile –Part 3: Specification operators; 2021