EN ISO 8251:2011
(Main)Anodizing of aluminium and its alloys - Measurement of abrasion resistance of anodic oxidation coatings (ISO 8251:2011)
Anodizing of aluminium and its alloys - Measurement of abrasion resistance of anodic oxidation coatings (ISO 8251:2011)
ISO 8251:2011 specifies the following three test methods: a) abrasive-wheel-wear test method, determining the wear resistance and the wear index of anodic oxidation coatings on flat specimens of aluminium and its alloys; b) abrasive jet test method, comparing the resistance to abrasion of anodic oxidation coatings on aluminium and its alloys with that of a standard specimen or, alternatively, a reference specimen, by use of a jet of abrasive particles; c) falling sand abrasion method, determining the abrasion resistance with falling sand applied to thin anodic oxidation coatings.
The use of these methods for coatings produced by hard anodizing is described in ISO 10074.
Anodisieren von Aluminium und Aluminiumlegierungen - Messung der Abriebfestigkeit von anodisch erzeugten Oxidschichten (ISO 8251:2011)
Diese Internationale Norm legt die folgenden drei Prüfverfahren fest:
a) Abriebprüfverfahren mit Schleifscheibe, das die Abriebfestigkeit und die Abriebzahl von anodisch
erzeugten Oxidschichten auf flachen Proben aus Aluminium und Aluminiumlegierungen ermittelt;
b) Abriebprüfverfahren mit Schleifmittelstrahl, das die Abriebfestigkeit von anodisch erzeugten
Oxidschichten auf Aluminium und Aluminiumlegierungen mit der Abriebfestigkeit entweder einer Normprobe
oder einer Referenzprobe vergleicht, mithilfe eines Strahls von Schleifmitteln;
c) Abriebprüfverfahren mit fallendem Sand, das die Abriebfestigkeit mithilfe von fallendem Sand
bestimmt und für dünne, anodisch erzeugte Oxidschichten anwendbar ist.
Die Anwendung dieser Verfahren an Schichten, die durch Hartanodisieren erzeugt wurden, ist in ISO 10074
beschrieben.
Anodisation de l'aluminium et de ses alliages - Détermination de la résistance à l'abrasion des couches d'oxyde anodiques (ISO 8251:2011)
L'ISO 8251:2011 spécifie les trois méthodes d'essai suivantes: a) méthode d'essai d'usure à la roue abrasive, qui détermine la résistance à l'usure et de l'indice d'usure de couches anodiques formées sur des échantillons plats d'aluminium ou d'un de ses alliages; b) méthode d'essai au jet abrasif, qui compare la résistance à l'abrasion de couches anodiques formées sur l'aluminium ou l'un de ses alliages avec celle d'un échantillon normalisé ou, en variante, celle d'un échantillon de référence, à l'aide d'un jet de particules abrasives; c) méthode d'abrasion par chute de sable, qui détermine la résistance à l'abrasion par chute de sable appliquée à des couches anodiques minces.
L'application de ces méthodes à des couches produites par anodisation dure est décrite dans l'ISO 10074.
Anodizacija aluminija in aluminijevih zlitin - Meritve obrabne obstojnosti anodno oksidiranih prevlek (ISO 8251:2011)
Ta mednarodni standard določa naslednje tri preskusne metode: a) metoda s preskusom obrabe z brusilnim kolutom, ki določa obrabno odpornost in obrabno število anodno oksidiranih prevlek na ploščatih vzorcih aluminija in njegovih zlitin; b) metoda s preskusom obrabe z brusilnim curkom, ki primerja obrabno odpornost anodno oksidiranih plasti na aluminiju in njegovih zlitinah z obrabno odpornostjo na standardnem vzorcu ali alternativno na referenčnem vzorcu z uporabo curka brusilnih delcev; c) brusilna metoda s padajočim peskom, ki določa obrabno odpornost s padajočim peskom, uporabljenim na tankih anodno oksidiranih prevlekah. Uporaba teh metod pri prevlekah, izdelanih s trdno anodizacijo, je opisana v ISO 10074.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2012
1DGRPHãþD
SIST EN 12373-10:1999
SIST EN 12373-9:1999
Anodizacija aluminija in aluminijevih zlitin - Meritve obrabne obstojnosti anodno
oksidiranih prevlek (ISO 8251:2011)
Anodizing of aluminium and its alloys - Measurement of abrasion resistance of anodic
oxidation coatings (ISO 8251:2011)
Anodisieren von Aluminium und Aluminiumlegierungen - Messung der Abriebfestigkeit
von anodisch erzeugten Oxidschichten (ISO 8251:2011)
Anodisation de l'aluminium et de ses alliages - Détermination de la résistance à l'usure et
de l'indice d'usure des couches d'oxyde anodiques (ISO 8251:2011)
Ta slovenski standard je istoveten z: EN ISO 8251:2011
ICS:
25.220.20 Površinska obdelava Surface treatment
77.120.10 Aluminij in aluminijeve zlitine Aluminium and aluminium
alloys
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 8251
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2011
ICS 25.220.20 Supersedes EN 12373-10:1998, EN 12373-9:1998
English Version
Anodizing of aluminium and its alloys - Measurement of abrasion
resistance of anodic oxidation coatings (ISO 8251:2011)
Anodisation de l'aluminium et de ses alliages - Anodisieren von Aluminium und Aluminiumlegierungen -
Détermination de la résistance à l'abrasion des couches Messung der Abriebfestigkeit von anodisch erzeugten
d'oxyde anodiques (ISO 8251:2011) Oxidschichten (ISO 8251:2011)
This European Standard was approved by CEN on 29 January 2011.
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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8251:2011: E
worldwide for CEN national Members.
Contents Page
Foreword .3
Foreword
This document (EN ISO 8251:2011) has been prepared by Technical Committee ISO/TC 79 "Light metals and
their alloys" in collaboration with Technical Committee CEN/TC 132 “Aluminium and aluminium alloys” 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 August 2011, and conflicting national standards shall be withdrawn at
the latest by August 2011.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 12373-9:1998 and EN 12373-10:1998.
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, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 8251:2011 has been approved by CEN as a EN ISO 8251:2011 without any modification.
INTERNATIONAL ISO
STANDARD 8251
Second edition
2011-02-01
Anodizing of aluminium and its alloys —
Measurement of abrasion resistance of
anodic oxidation coatings
Anodisation de l'aluminium et de ses alliages — Détermination
de la résistance à l'abrasion des couches d'oxyde anodiques
Reference number
ISO 8251:2011(E)
©
ISO 2011
ISO 8251:2011(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
© ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2011 – All rights reserved
ISO 8251:2011(E)
Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.1
3 Terms and definitions .1
4 Characteristics of abrasion tests.2
4.1 Abrasive-wheel-wear test .2
4.2 Abrasive jet test.2
4.3 Falling sand abrasion test .2
5 Abrasive-wheel-wear test .3
5.1 Principle .3
5.2 Apparatus.3
5.3 Procedure.3
5.4 Calculation of results.5
6 Abrasive jet test.8
6.1 Principle .8
6.2 Apparatus.8
6.3 Procedure.9
6.4 Calculation of results.11
7 Falling sand abrasion test .12
7.1 Principle .12
7.2 Apparatus.12
7.3 Test specimen.13
7.4 Test environment.13
7.5 Test conditions .13
7.6 Test procedure.13
7.7 Expression of results.14
8 Test report.15
Annex A (normative) Preparation of standard specimen .16
Annex B (informative) Depth survey of abrasion resistance.18
Annex C (informative) Design of abrasive-wheel-wear test apparatus .21
Annex D (informative) Design of abrasive jet test apparatus.22
Annex E (informative) Design of falling sand abrasion test apparatus.26
Bibliography.27
ISO 8251:2011(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 8251 was prepared by Technical Committee ISO/TC 79, Light metals and their alloys, Subcommittee
SC 2, Organic and anodic oxidation coatings on aluminium.
This second edition cancels and replaces the first edition (ISO 8251:1987) as well as ISO 8252:1987, which
have been technically revised.
The main changes compared to the first edition are as follows:
a) the inclusion of the test previously described in ISO 8252:1987;
b) the inclusion of the falling sand test;
c) the use of the methods for coatings produced by hard anodizing has been moved to ISO 10074:2010.
iv © ISO 2011 – All rights reserved
ISO 8251:2011(E)
Introduction
The resistance of anodic oxidation coatings to abrasion is an important property. As it is dependent upon the
composition of the metal, the thickness of the coating and the conditions of anodizing and sealing, it can give
information about the quality of the coating, its potential resistance to erosion or wear and its performance in
service. For example, the effect of an abnormally high anodizing temperature, which could cause potential
deterioration in service by chalking of the surface layers, may be readily detected by means of an abrasive
wear resis
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.