EN 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

• Status: Published
• Publication Date: 14-Aug-2011
• Withdrawal Date: 28-Feb-2012
• ICS: 87.040 - Paints and varnishes
• Technical Committee: CEN/TC 139 - Paints and varnishes
• Drafting Committee: CEN/TC 139 - Paints and varnishes
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 15-Aug-2011
• Due Date: 27-Sep-2010
• Completion Date: 15-Aug-2011
• Ref Project: SIST EN ISO 6272-2:2011 - Paints and varnishes - Rapid-deformation (impact resistance) tests - Part 2: Falling-weight test, small-area indenter (ISO 6272-2:2011)

Relations

• Replaces: EN ISO 6272-2:2006 - Paints and varnishes - Rapid-deformation (impact resistance) tests - Part 2: Falling-weight test, small-area indenter (ISO 6272-2:2002)
• Effective Date: 22-Dec-2008

Overview

EN ISO 6272-2:2011 - Paints and varnishes - Rapid‑deformation (impact resistance) tests - Part 2: Falling‑weight test, small‑area indenter (ISO 6272-2:2011) describes a laboratory method to evaluate the resistance of a dry paint or varnish film on a metal substrate to cracking or peeling when subjected to a rapid deformation produced by a falling weight acting on a small‑area spherical indenter. The standard emphasizes that the apparatus produces rapid deformation rather than a true high‑velocity impact and cautions about limited reproducibility.

Key topics and technical requirements

• Test principle: A cylindrical weight is dropped down a vertical guide tube to strike a hardened‑steel hemispherical indenter that rests on the coated panel; failure is detected as cracking or peeling.
• Apparatus essentials: guide tube (0.6–1.2 m), weights of (1000 ±10) g or (2000 ±20) g, indenter mass (150 ±15) g with hemispherical head diameters of (12.7 ±0.06) mm or (15.9 ±0.06) mm, panel support with a central hole Ø (16.3 ±0.1) mm.
• Specimen preparation: metal panels per ISO 1514, minimum 0.25 mm thick, test positions at least 40 mm apart and ≥20 mm from edges; dry‑film thickness measured per ISO 2808 and must be within ±10% of the specified value.
• Conditioning and test environment: condition at (23 ±2) °C and (50 ±5)% RH (minimum 16 h) and complete testing within 30 minutes after removal; record test temperature and relative humidity.
• Procedure highlights: increase drop height in 25 mm increments to determine the height where cracking/peeling first appears; perform repeated drops (five impacts at specified heights) at randomized positions; inspect with a ×10 magnifier or, on steel, with acidified copper sulfate to make failure more visible.
• Precision and limitations: due to poor interlaboratory reproducibility, numerical results should generally come from a single laboratory; interlaboratory comparisons are more reliable when using ranking instead of absolute values.

Applications

• Quality control and batch acceptance testing of coating systems on metal substrates.
• R&D and formulation screening to compare impact/rapid‑deformation resistance of paints, varnishes and multilayer systems.
• Failure analysis when coatings crack or peel under localized deformation (e.g., dropped objects, tooling contact).
• Specification and material selection in industries where small‑area mechanical deformation of coated surfaces is a concern (automotive, appliance, metal fabrication, protective coatings).

Who uses this standard

• Coating manufacturers and formulators
• Independent and in‑house test laboratories
• Quality assurance and coating specification engineers
• OEMs, asset owners and corrosion/control engineers

Related standards

• EN/ISO 6272‑1 (Falling‑weight test, large‑area indenter)
• ISO 1513, ISO 1514, ISO 2808, ISO 3270, ISO 13076, ISO 15528 (normative references used for sampling, panels, thickness, conditioning and assessment)

Keywords: EN ISO 6272-2:2011, impact resistance test, falling‑weight test, small‑area indenter, paints and varnishes, rapid‑deformation test, coating testing.

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2011
1DGRPHãþD
SIST EN ISO 6272-2:2006
%DUYHLQODNL3UHVNXVLQDSRGODJLKLWUHGHIRUPDFLMHRGSRUQRVWSURWLXGDUFX
GHO0HWRGDVSDGDMRþRXWHåMRPDMKQDSRYUãLQDYWLVND,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
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
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 conditi
...