EN 10049:2005

Measurement of roughness average Ra and peak count RPc on metallic flat products

This European Standard defines the measurement conditions for surface roughness parameters of metallic flat products, both uncoated (cold and hot rolled pickled steel) and coated with metallic coatings (e.g. zinc, aluminium, tin, chromium) [see subclause 3.1].

Messung des arithmetischen Mittenrauwertes Ra und der Spitzenzahl RPc an metallischen Flacherzeugnissen

Diese Europäische Norm legt die Prüfbedingungen fest für die Rauheitskenngrößen der Oberflächen von
metallischen Flacherzeugnissen ohne Überzug (kalt- und warmgewalzter gebeizter Stahl) und mit
metallischen Überzügen (z. B. Zink, Aluminium, Zinn, Chrom) [siehe 3.1 ].

Mesure de la rugosité moyenne Ra et du nombre de pics RPc sur les produits plats métalliques

Meritve srednje vrednosti hrapavosti Ra in števila konic RPc na ravnih kovinskih izdelkih

General Information

• Status: Withdrawn
• Publication Date: 08-Nov-2005
• Withdrawal Date: 12-Nov-2013
• ICS: 17.040.20 - Properties of surfaces
• Technical Committee: ECISS/TC 109 - Coated and uncoated flat products to be used for cold forming
• Drafting Committee: ECISS/TC 13 - Flat products for cold working - Qualities, dimensions, tolerances and specific tests
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 13-Nov-2013
• Completion Date: 13-Nov-2013
• Ref Project: SIST EN 10049:2006 - Measurement of roughness average Ra and peak count RPc on metallic flat products

Relations

• Replaced By: EN 10049:2013 - Measurement of roughness average Ra and peak count RPc on metallic flat products
• Effective Date: 20-Nov-2013

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2006
Meritve srednje vrednosti hrapavosti Ra in števila konic RPc na ravnih kovinskih
izdelkih
Measurement of roughness average Ra and peak count RPc on metallic flat products
Messung des arithmetischen Mittenrauwertes Ra und der Spitzenzahl RPc an
metallischen Flacherzeugnissen
Mesure de la rugosité moyenne Ra et du nombre de pics RPc sur les produits plats
métalliques
Ta slovenski standard je istoveten z: EN 10049:2005
ICS:
17.040.20 Lastnosti površin Properties of surfaces
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 10049
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2005
ICS 17.040.20
English Version
Measurement of roughness average Ra and peak count RPc on
metallic flat products
Mesure de la rugosité moyenne Ra et du nombre de pics Messung des arithmetischen Mittenrauwertes Ra und der
RPc sur les produits plats métalliques Spitzenzahl RPc an metallischen Flacherzeugnissen
This European Standard was approved by CEN on 30 September 2005.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 10049:2005: E
worldwide for CEN national Members.

Contents Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Terms and definitions .4
4 Measuring instrument .7
5 Sample preparation .9
6 Measuring conditions.9
7 Test report .11
Bibliography .12

Foreword
This European Standard (EN 10049:2005) has been prepared by Technical Committee ECISS/TC 13 “Flat
products for cold working - Qualities, dimensions, tolerances and specific tests”, the secretariat of which is
held by IBN.
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 May 2006, and conflicting national standards shall be withdrawn at the
latest by May 2006.
The European Committee for Iron and Steel Standardization (ECISS) had charged the Technical Committee
13 (Secretariat Belgium) with preparing a European Standard on the measuring of roughness as a revision of
Euronorm 49.
The reason for the existence of this European Standard is that general roughness measurement rules as
described in ISO standards (see Clause 2) are not practical for metallic flat products for the following reasons:
- the practical use of EN ISO 4288 is not convenient for flat products, because the choice of the cut-off (λc)
is dependent on the Ra to be measured; the product range is quite wide and the transition point for Ra is
2 µm in EN ISO 4288 (EN ISO stipulates a cut-off (λc) of 0,8 mm for Ra < 2µm and a cut-off (λc) of 2,5 mm
for Ra > 2µm);
- in the automotive industry, the use of a cut-off (λc) of 2,5 mm is based on requirements related to paint
appearance.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and United Kingdom.
1 Scope
This European Standard defines the measurement conditions for surface roughness parameters of metallic
flat products, both uncoated (cold and hot rolled pickled steel) and coated with metallic coatings (e.g. zinc,
aluminium, tin, chromium) [see subclause 3.1].
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN ISO 3274, Geometrical product specifications (GPS) - Surface texture: Profile method - Nominal
characteristics of contact (stylus) instruments (ISO 3274:1996)
EN ISO 5436-1, Geometrical Product Specifications (GPS) - Surface texture: Profile method; Measurement
standards - Part 1: Material measures (ISO 5436-1:2000)
EN ISO 11562:1997, Geometrical product specifications (GPS) - Surface texture: Profile method -
Metrological characteristics of phase correct filters (ISO 11562:1996)
3 Terms and definitions
For the purposes of this European Standard the following terms and definitions apply.
3.1
application group products
3.1.1
application group 1 product
metallic flat product mainly used in the automotive industry, uncoated or coated with metallic coatings (e.g.
zinc, aluminium)
3.1.2
application group 2 product
metallic flat product mainly used for applications other than those of the automotive industry (e.g. tinplate or
chromium coated steel for packaging, uncoated or coated cold rolled steel, pickled hot rolled steel)
3.2
surface profile
profile that results from the intersection of the real surface by a specified plane
NOTE See EN ISO 4287.
3.3
primary profile (P-profile)
digital form of the surface profile after application of the profile filter λs for suppressing the very short
wavelength components due to noise and vibrations
NOTE 1 See EN ISO 3274 and EN ISO 11562.
NOTE 2 The primary profile is the basis for the evaluation of the primary profile parameter.
3.4
roughness profile (R-profile)
profile derived from the primary profile by suppressing the long wave comp
...