EN ISO 6272-2:2011
(Main)Paints and varnishes - Rapid-deformation (impact resistance) tests - Part 2: Falling-weight test, small-area indenter (ISO 6272-2:2011)
Paints and varnishes - Rapid-deformation (impact resistance) tests - Part 2: Falling-weight test, small-area indenter (ISO 6272-2:2011)
ISO 6272-2:2011 describes a method for evaluating the resistance of a dry film of paint, varnish or related product to cracking or peeling from a substrate when it is subjected to a deformation caused by a falling weight, dropped under standard conditions, acting on a small-area spherical indenter.
NOTE The terms "impact" and "impact resistance" are used in the title and text of ISO 6272-2, but an important characteristic of the apparatus used is that it should produce rapid deformation rather than a true impact.
Because of the poor reproducibility of this test method, the method should be restricted to testing in only one laboratory when the results are expressed as numerical values. Interlaboratory agreement is improved when ranking is used in place of numerical values.
Beschichtungsstoffe - Prüfung der Widerstandsfähigkeit bei schlagartiger Verformung (Schlagfestigkeit) - Teil 2: Prüfung durch fallendes Gewichtsstück, kleine Prüffläche (ISO 6272-2:2011)
Dieser Teil von ISO 6272 legt ein Prüfverfahren zum Bewerten des Widerstandes einer Beschichtung aus
einem Beschichtungsstoff gegen Rissbildung oder Ablösen von einem Substrat fest, wenn die Beschichtung
unter Normbedingungen durch einen fallenden Körper verformt wird.
ANMERKUNG Die Ausdrücke „Schlag“ und „Schlagfestigkeit“ wurden zwar in den Titel und Text dieses Teiles von
ISO 6272 aufgenommen, aber eines der bestimmenden Merkmale des verwendeten Gerätes ist, dass es eine schnelle
Verformung als Folge der Schlageinwirkung hervorruft, aber keinen "Schlag".
Wenn Zahlenwerte verwendet werden, sollte dieses Prüfverfahren wegen der schlechten Vergleichbarkeit auf
Prüfungen in nur einem Laboratorium beschränkt werden. Die Übereinstimmung zwischen unterschiedlichen
Laboratorien wird verbessert, wenn anstelle von Zahlenwerten Rangstufen verwendet werden.
Peintures et vernis - Essais de déformation rapide (résistance au choc) - Partie 2: Essai de chute d'une masse avec pénétrateur de surface réduite (ISO 6272-2:2011)
L'ISO 6272-2:2011 décrit une méthode permettant d'évaluer la résistance d'un feuil sec de peinture, vernis ou produit assimilé au craquelage ou au décollement de son subjectile lorsqu'il est soumis à une déformation provoquée par la chute d'une masse, lâchée dans des conditions normalisées, agissant sur un pénétrateur sphérique de surface réduite.
En raison de sa faible reproductibilité, lorsque les résultats sont exprimés sous forme de valeurs numériques, la présente méthode est destinée à être utilisée pour des essais effectués dans un même laboratoire. La concordance interlaboratoires est améliorée lorsqu'un classement est utilisé à la place de valeurs numériques.
Barve in laki - Preskusi na podlagi hitre deformacije (odpornost proti udarcu) - 2. del: Metoda s padajočo utežjo, majhna površina vtiska (ISO 6272-2:2011)
Ta del ISO 6272 opisuje metodo za vrednotenje odpornosti suhega filma barve, laka ali sorodnega izdelka proti pokanju ali luščenju s substrata, ko je izpostavljen deformaciji, ki jo povzroči padajoča utež, spuščena v standardnih pogojih, ki deluje z majhno površino vtiska.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2011
1DGRPHãþD
SIST EN ISO 6272-2:2006
%DUYHLQODNL3UHVNXVLQDSRGODJLKLWUHGHIRUPDFLMH RGSRUQRVWSURWLXGDUFX
GHO 0HWRGDVSDGDMRþRXWHåMRPDMKQDSRYUãLQDYWLVND ,62
Paints and varnishes - Rapid-deformation (impact resistance) tests - Part 2: Falling-
weight test, small-area indenter (ISO 6272-2:2011)
Beschichtungsstoffe - Prüfung der Widerstandsfähigkeit bei schlagartiger Verformung
(Schlagprüfung) - Teil 2: Prüfung durch fallendes Gewichtsstück, kleine Prüffläche (ISO
6272-2:2011)
Peintures et vernis - Essais de déformation rapide (résistance au choc) - Partie 2: Essai
de chute d'une masse avec pénétrateur de surface réduite (ISO 6272-2:2011)
Ta slovenski standard je istoveten z: EN ISO 6272-2:2011
ICS:
87.040 Barve in laki Paints and varnishes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 6272-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2011
ICS 87.040 Supersedes EN ISO 6272-2:2006
English Version
Paints and varnishes - Rapid-deformation (impact resistance)
tests - Part 2: Falling-weight test, small-area indenter (ISO 6272-
2:2011)
Peintures et vernis - Essais de déformation rapide Beschichtungsstoffe - Prüfung der Widerstandsfähigkeit bei
(résistance au choc) - Partie 2: Essai de chute d'une masse schlagartiger Verformung (Schlagfestigkeit) - Teil 2:
avec pénétrateur de surface réduite (ISO 6272-2:2011) Prüfung durch fallendes Gewichtsstück, kleine Prüffläche
(ISO 6272-2:2011)
This European Standard was approved by CEN on 13 August 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 6272-2:2011: E
worldwide for CEN national Members.
Contents Page
Foreword .3
Foreword
This document (EN ISO 6272-2:2011) has been prepared by Technical Committee ISO/TC 35 "Paints and
varnishes" in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” the secretariat of
which is held by DIN.
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 February 2012, and conflicting national standards shall be withdrawn
at the latest by February 2012.
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 ISO 6272-2:2006.
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 6272-2:2011 has been approved by CEN as a EN ISO 6272-2:2011 without any modification.
INTERNATIONAL ISO
STANDARD 6272-2
Second edition
2011-08-15
Paints and varnishes — Rapid-
deformation (impact resistance) tests —
Part 2:
Falling-weight test, small-area indenter
Peintures et vernis — Essais de déformation rapide (résistance au
choc) —
Partie 2: Essai de chute d'une masse avec pénétrateur de surface
réduite
Reference number
ISO 6272-2:2011(E)
©
ISO 2011
ISO 6272-2:2011(E)
© 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
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Published in Switzerland
ii © ISO 2011 – All rights reserved
ISO 6272-2:2011(E)
Contents Page
Foreword .iv
1 Scope.1
2 Normative references.1
3 Principle.1
4 Apparatus.2
5 Reagents.2
6 Sampling.2
7 Test panels.2
8 Procedure.4
9 Precision.5
10 Test report.5
ISO 6272-2:2011(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 6272-2 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 9,
General test methods for paints and varnishes.
This second edition cancels and replaces the first edition (ISO 6272-2:2002), which has been technically
revised. The main technical changes are:
a) all non-SI units have been deleted;
b) the definition has been deleted because the term “impact” is incorrect for this test;
c) a figure showing the test apparatus has been added;
d) the test is no longer carried out at a specified relative humidity; instead, the relative humidity is simply
recorded but the test has to be completed within a specified length of time after conditioning the test
panels;
e) a pin-hole detector is no longer used to detect holes in the coating under test;
f) the precision data have been deleted because the method is slightly different from the ASTM method to
which the precision data applied;
g) the supplementary test conditions (formerly Annex A) have been incorporated in the test report.
ISO 6272 consists of the following parts, under the general title Paints and varnishes — Rapid-deformation
(impact resistance) tests:
⎯ Part 1: Falling-weight test, large-area indenter
⎯ Part 2: Falling-weight test, small-area indenter
iv © ISO 2011 – All rights reserved
INTERNATIONAL STANDARD ISO 6272-2:2011(E)
Paints and varnishes — Rapid-deformation (impact resistance)
tests —
Part 2:
Falling-weight test, small-area indenter
1 Scope
This part of ISO 6272 describes a method for evaluating the resistance of a dry film of paint, varnish or related
product to cracking or peeling from a substrate when it is subjected to a deformation caused by a falling
weight, dropped under standard conditions, acting on a small-area spherical indenter.
NOTE The terms “impact” and “impact resistance” are used in the title and text of this part of ISO 6272, but an
important characteristic of the apparatus used is that it should produce rapid deformation rather than a true impact.
Because of the poor reproducibility of this test method, the method should be restricted to testing in only one
laboratory when the results are expressed as numerical values. Interlaboratory agreement is improved when
ranking is used in place of numerical values.
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.
ISO 1513, Paints and varnishes — Examination and preparation of test samples
ISO 1514, Paints and varnishes — Standard panels for testing
ISO 2808, Paints and varnishes — Determination of film thickness
ISO 3270, Paints and varnishes and their raw materials — Temperatures and humidities for conditioning and
testing
ISO 13076, Paints and varnishes — Lighting and procedure for visual assessments
ISO 15528, Paints, varnishes and raw materials for paints and varnishes — Sampling
3 Principle
The coating under test is applied to suitable thin metal panels. After the coatings have cured, a standard
weight is dropped a distance so as to strike an indenter that deforms the coating and the substrate. The test
can be carried out with the coated side of the panel facing upwards (i.e. towards the falling weight and
indentor) or downwards (i.e. away from the weight and indentor). By gradually increasing the distance the
weight drops, the point at which failure occurs can be determined. Films generally fail by cracking, which is
made more visible by the use of a magnifier or, on steel, by the application of a copper sulfate solution.
ISO 6272-2:2011(E)
4 Apparatus
4.1 Falling-weight apparatus (see Figure 1), consisting basically of a vertical tube to guide a cylindrical
weight that is dropped on an indenter resting on the test panel and including the components described in
4.1.1 to 4.1.4.
4.1.1 Guide tube, 0,6 m to 1,2 m long, mounted vertically on a baseplate. A slot is cut lengthwise on one
side of the tube to act as a guide for a cylindrical weight that fits inside the tube. Graduations are marked in
millimetres along the slot. The base is constructed so that a thin flat panel can be inserted 50 mm below the
tube.
4.1.2 Weight, consisting of a metal cylinder made to fit inside the guide tube. A pin is fitted into one side of
the weight to act as a guide by riding in the slot in the tube, to serve as a handle by which the weight can be
raised and released and to indicate the height in millimetres. The mass of the weight is either (1 000 ± 10) g or
(2 000 ± 20) g.
To avoid excessive friction and to ensure accurate guidance, the difference between the inner diameter of the
guide tube and the outer diameter of the falling weight shall be (1 ± 0,2) mm.
4.1.3 Indenter, made of hardened steel (55 HRC to 60 HRC), with a mass of (150 ± 15) g and with a
hemispherical head having a diameter of either (12,7 ± 0,06) mm or (15,9 ± 0,06) mm. The head rests on the
test panel and the indenter is held vertically by a guide ring.
To avoid excessive friction and to ensure accurate guidance, the difference between the inner diameter of the
guide ring and the outer dia
...
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