SIST EN 4195:2012

Aerospace series - Paints and varnishes - Test method for determination of chromate leaching

This European Standard defines a test procedure for the determination of the leaching rate of hexavalent chromium from the dry paint film of a chromate containing primer for aerospace use. The rate can be related to requirements either to prescribe the type of primer for an intended use or for the purpose of batch quality consistency.
The procedure is applicable to products intended for use in aerospace applications.

Luft- und Raumfahrt - Anstrichstoffe - Chromatauslaugbarkeitstest

Diese Europäische Norm legt eine Verfahrensweise zum Bestimmen der Auslaugrate von sechswertigem Chrom aus der trockenen Beschichtung mit einem chromathaltigen Primer (Haftgrundmittel) für Anwendungen in der Luft- und Raumfahrt fest. Die Rate kann in Beziehung zu den Anforderungen entweder zur Beschreibung des Primertyps für eine vorgesehene Anwendung oder für den Zweck der Qualitätskonstanz des Loses stehen. Die Verfahrensweise ist für Produkte anwendbar, die für die Anwendungen in der Luft- und Raumfahrt vorgesehen sind.

Série aérospatiale - Peintures et vernis - Test de lixiviation de chromate

Aeronavtika - Barve in laki - Preskusna metoda za ugotavljanje izluževanja kroma

Ta evropski standard določa preskusni postopek za ugotavljanje stopnje izluževanja šestvalentnega kroma iz plasti suhe barve in sredstva za pripravo površine, ki vsebuje kromat, za uporabo v aeronavtiki. Stopnja je lahko povezana z zahtevami za predpisovanje vrste sredstva za pripravo površine za predvideno uporabo ali za zagotavljanje stalne kakovosti serije. Postopek se uporablja za izdelke, namenjene uporabi v aeronavtiki.

General Information

• Status: Withdrawn
• Publication Date: 09-Jan-2012
• Withdrawal Date: 21-Mar-2022
• ICS: 49.040 - Coatings and related processes used in aerospace industry
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 22-Mar-2022
• Due Date: 14-Apr-2022
• Completion Date: 22-Mar-2022
• Ref Project: EN 4195:2011 - Aerospace series - Paints and varnishes - Test method for determination of chromate leaching

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 4195:2012
01-februar-2012
Aeronavtika - Barve in laki - Preskusna metoda za ugotavljanje izluževanja kroma
Aerospace series - Paints and varnishes - Test method for determination of chromate
leaching
Luft- und Raumfahrt - Anstrichstoffe - Chromatauslaugbarkeitstest
Série aérospatiale - Peintures et vernis - Test de lixiviation de chromate
Ta slovenski standard je istoveten z: EN 4195:2011
ICS:
49.040 Prevleke in z njimi povezani Coatings and related
postopki, ki se uporabljajo v processes used in aerospace
letalski in vesoljski industriji industry
SIST EN 4195:2012 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN 4195:2012

---------------------- Page: 2 ----------------------

SIST EN 4195:2012


EUROPEAN STANDARD
EN 4195

NORME EUROPÉENNE

EUROPÄISCHE NORM
December 2011
ICS 49.040
English Version
Aerospace series - Paints and varnishes - Test method for
determination of chromate leaching
Série aérospatiale - Peintures et vernis - Test de lixiviation Luft- und Raumfahrt - Beschichtungsstoffe -
de chromate Chromatauslaugbarkeitstest
This European Standard was approved by CEN on 27 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 4195:2011: E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------

SIST EN 4195:2012
EN 4195:2011 (E)
Contents Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Principle .4
4 Specimens and test apparatus .4
5 Test procedure .4
6 Analysis of hexavalent chromium.5
7 Test report .5
8 Designation .6
Annex A (informative) .7
A.1 Diphenylcarbazide solution .7
A.2 Phosphoric-sulphuric acid .7
A.3 Preparation of standard chromium solutions .7
A.4 Calibration for diphenylcarbazide method .7
Annex B (informative) Calculation of factor .9

2

---------------------- Page: 4 ----------------------

SIST EN 4195:2012
EN 4195:2011 (E)
Foreword
This document (EN 4195:2011) has been prepared by the Aerospace and Defence Industries Association of
Europe - Standardization (ASD-STAN).
After enquiries and votes carried out in accordance with the rules of this Association, this Standard has
received the approval of the National Associations and the Official Services of the member countries of ASD,
prior to its presentation to CEN.
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 June 2012, and conflicting national standards shall be withdrawn at
the latest by June 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.
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.
3

---------------------- Page: 5 ----------------------

SIST EN 4195:2012
EN 4195:2011 (E)
1 Scope
This European Standard defines a test procedure for the determination of the leaching rate of hexavalent
chromium from the dry paint film of a chromate containing primer for aerospace use.
The rate can be related to requirements either to prescribe the type of primer for an intended use or for the
purpose of batch quality consistency.
The procedure is applicable to products intended for use in aerospace applications.
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 2090, Aerospace series - Aluminium alloy AL-P2024-T3 - Clad sheet and strip 0,3 mm EN 2334, Aerospace series — Chromic-sulphuric acid pickle of aluminium and aluminium alloys
EN ISO 3696, Water for analytical laboratory use — Specification and test methods (ISO 3696)
3 Principle
The test involves placing a dry film of chromate primer in distilled water in accordance with EN ISO 3696 for a
period of time at a controlled temperature to allow soluble chromate to leach from the film into solution in the
water. The water is collected for the measurement of dissolved hexavalent chromate by a suitable means.
Because the rate of leaching can vary considerably over a period of time the collection time is divided into a
number of periods of different duration appropriate to the rate of leaching over the collection period.
Some of the water collected in the collection periods is not used for measurement because normally sufficient
data is gained from other collections.
Values of chromate leaching can be numerically expressed or for convenience plotted on a graph.
4 Speci
...