Metallic and non-organic coatings on metallic substrates - Saline droplets corrosion test (SD test) (ISO 4536:1985)

Specifies the test solution, the apparatus and the procedure for a saline droplets corrosion test. Is suitable for detecting defests and discontinuities. It is also suitable for chemical or electrochemical conversion coatings. Is not suitable for testing coatings intended for the more severe types of service. The type and number of test specimens, the exposure periods to be used for a particular product and the interpretaiton of results are not specified.

Metallische und anorganische Überzüge auf metallischen Grundwerkstoffen - Salztröpfchen-Korrosionsprüfung (SD-Versuch) (ISO 4536:1985)

In dieser Internationalen Norm sind die Prüflösung, die Prüfeinrichtung und die Durchführung der Salztröpfchen Korrosionsprüfung zur Beurteilung der Qualität von metallischen und anorganischen Überzügen festgelegt, die entsprechend den Forderugen für eine Beschichtung oder den Erzeugnisvorschriften auf metallischen Grundwerkstoffen erzeugt werden.

Revêtements métalliques et non organiques sur bases métalliques - Essai de corrosion aux gouttelettes salines (Essai SD) (ISO 4536:1985)

1.1 La présente Norme internationale spécifie la solution d'essai, l'appareillage et le mode opératoire d'un essai de corrosion aux gouttelettes salines permettant l'évaluation des revêtements métalliques et inorganiques sur base métallique conformément aux spécifications pour les revêtements et pour les produits finis. 1.2 La méthode d'essai spécifiée convient à la détection des défauts et des discontinuités dans les revêtements métalliques cathodiques par rapport au métal de base, ou dans les revêtements chimiques et électro-chimiques de conversion tels ceux qu'on obtient par chromatation et par phosphatation. La méthode ne s'applique pas à l'essai de revêtements destinés aux usages les plus sévères. 1.3 Le type et le nombre d'éprouvettes, les périodes d'exposition réservées à un produit donné et l'interprétation des résultats ne sont pas spécifiés dans la présente Norme internationale. Ces détails figurent dans les normes appropriées des matériaux et des revêtements.

Kovinske in anorganske prevleke na kovinskih podlagah - Korozijski preskus s slanimi kapljicami (ISO 4536:1985)

General Information

Status
Published
Publication Date
08-Jan-1995
Current Stage
9093 - Decision to confirm - Review Enquiry
Due Date
02-Nov-2009
Completion Date
02-Nov-2009

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SLOVENSKI STANDARD
SIST EN ISO 4536:1999
01-oktober-1999
Kovinske in anorganske prevleke na kovinskih podlagah - Korozijski preskus s
slanimi kapljicami (ISO 4536:1985)

Metallic and non-organic coatings on metallic substrates - Saline droplets corrosion test

(SD test) (ISO 4536:1985)
Metallische und anorganische Überzüge auf metallischen Grundwerkstoffen -
Salztröpfchen-Korrosionsprüfung (SD-Versuch) (ISO 4536:1985)

Revetements métalliques et non organiques sur bases métalliques - Essai de corrosion

aux gouttelettes salines (Essai SD) (ISO 4536:1985)
Ta slovenski standard je istoveten z: EN ISO 4536:1995
ICS:
25.220.20 Površinska obdelava Surface treatment
25.220.40 Kovinske prevleke Metallic coatings
SIST EN ISO 4536:1999 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 4536:1999
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SIST EN ISO 4536:1999
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SIST EN ISO 4536:1999
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SIST EN ISO 4536:1999
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SIST EN ISO 4536:1999
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SIST EN ISO 4536:1999
International Standard

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION.MEXilYHAPOflHAR OPf-AHM3ALWlR I-IO CT.AHJJAPTM3AlUWORGANISATION INTERNATIONALE DE NORMALISATION

Metallic and non-organic coatings on metallic /Substrates -
Saline droplets corrosion test (SD test)
Essai de corrosion aux gouttelettes salines (Essai SO)
Revetements m&alliques et non organiques SW bases m&alliques -
First edition - 1985-12-15
Ref. No. ISO 45364985 (EI
UDC 621.793 : 620.193.27
metal coatings, su bstrates, metals, tests, corrosion tests.
Descriptors : coatings,
Price based on 4 pages
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SIST EN ISO 4536:1999
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. Esch 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, govern-

mental and non-governmental, in liaison with ISO, also take patt in the work.

Draft International Standards adopted by the technical committees are circulated to

the member bodies for approval before their acceptance as International Standards by

the ISO Council. They are approved in accordance with ISO procedures requiring at

least 75 % approval by the member bodies voting.
International Standard ISO 4536 was prepared by Technical Committee ISO/TC 107,
Metallic and o ther non-organic cos tings.

Users should note that all International Standards undergo revision from time to time

and that any reference made herein to any other International Standard implies its

Jatest edition, unless otherwise stated.
0 International Organization for Standardization, 1985 0
Printed in Switzerland
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SIST EN ISO 4536:1999
INTERNATIONAL STANDARD
ISO 45364985 (EI
Metallic and non-organic coatings on metallic Substrates -
Saline droplets corrosion test (SD test)
0 Introduction 1 Scope and field of application
0.1 This test diff ers significantly from that specified in
1.1 This International Standard specifies the test Solution,
ISO 3763, Metallic coatings - Neutral salt Spray test (NSS
the apparatus and the procedure for a Saline droplets corrosion
testl, although the fields of application of the two tests are
test for assessment of the quality of metallic and non-organic
similar and their results are often comparable. In the Saline
coatings, made in accordance with the requirements of coating
droplets corrosion test, a Pattern of discrete droplets is pro-
or product specifications on metallic Substrates.
duced by spraying the specified test Solution on to the surfaces
being tested.
1.2 The method of test specified is suitable for detecting
defects and discontinuities in metal coatings cathodic to the
underlying metal. lt is also suitable for Chemical or elec-
0.2 The droplets test may therefore have advantages for
trochemical conversion coatings such as those obtained by
testing some conversion coatings which may, in continuous
chromate and Phosphate treatments. The method is not
leaching, undergo changes which do not occur in their usual
suitable for testing coatings intended for the more severe types
conditions of Service. For some applications, the droplets test
of Service.
may be more severe than the continuous spray.test since the
corrosion processes in static drops may Cause more intense
local action than that produced by a continuous moving mois-
1.3 The type and number of test specimens, the exposure
ture film.
periods to be used for a particular product and the interpreta-
tion of results are not specified in this International Standard.
The method has advantages in needing only simple, easily
Such details should be given in the appropriate materials or
controlled apparatus and in being applicable to articles of
coating specif ication.
complex shape.
0.3 The method of corrosion by a Pattern of discrete droplets
2 References
has been used with several solutions for tests intended to
assess the resistance of a coating to particular environments.
ISO 483, Plastics - Small enclosures for conditioning and
testing at relative humidities main tained b y aqueous solu tions. 1 )
Only one test Solution is specified in this International Stan-
dard. lt contains the major mineral constituents of sea-water
ISO 1462, Metallic coatings - Coa tings o ther than those
and has advantages in that droplets of the Solution do not easily
anodic to the basis metal - Accelera ted corrosion tests -
dry out and that, for some purposes, Simulation of the effects
Method for the evaluation of the results.
of sea-Spray may be useful. However, other solutions may be
given in specifications for materials and products.
ISO 4540, Metallic coatings - Coatings cathodic to the
- Rating of electroplated test specimens subjected
Substrate
to corrosion tests.
0.4 In many instances, there is no direct relation between the
results of an accelerated corrosion test and the resistance to
corrosion in other media, because several factors which
influence the progress of corrosion, such as the formation of 3 Principle
protective films, vary greatly with the conditions encountered.

The results obtained in the test should not, therefore, be Spraying of the test specimens with a neutral salt Solution,

regarded as a direct guide to the corrosion resistance of the storing in conditions of high humidity, respraying only when it

tested materials in all environments where these materials may is needed to maintain the Pattern of droplets.

be used. Furthermore, Performance of different materials in the

test cannot always be taken as a direct guide to the relative NOTE - The regular flow of new Solution over the surfaces under test,

such as occurs in the continuous salt Spray test, does not take place.
corrosion resistance of these materials in Service.
1) At present at the Stage of draft. (Revision of ISO/R 4834966.)
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SIST EN ISO 4536:1999
ISO 45364985 (‘El
4. Test solution (sec the table) 6 Test specimens
Using only reagents of recognized analytical grade and only
6.1 Select the number and type of test specimens, their
distilled or demineralized water of pH 65 to 7,2, prepare a sol-
shape and their dimensions according to the specification for
ution, the composition of which is given in the table.
the product or coating being tested.
NOTE - The simultaneous exposure of control specimens for which
Table - Composition of test solution
the correlation between the test and Service life has been established is
often useful.
Concentration (g/l)
Component
6.2 Unless otherwise specified, clean the test specimens
Sodium chloride (NaCI)
265 .
before testing. Choose the method of cleaning appropriate to
Magnesium chloride ( MgC12) 2,4
the nature of the surface and of the contaminants. DO not use
Magnesium sulfate
(MgS04) 3,3 abrasives on conversion coatings; for metallic coatings, the
only permitted abrasive is a Paste of pure magnesium Oxide. DO
Calcium chloride
(CaCl2) lt1
not use solvents that are corrosive or which may deposit either
Potassium chloride (KCI) 0,73
corrosion-promoting or protective films. Take care to ensure
Sodium hydrogen carbonate (NaHC03) 0,20
that the test specimens are not recontaminated after cleaning
Sodium bromide (NaBr) 0,28
by careless handling or in any other way.
Filter the Solution before
...

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