Aerospace series - Test method - Determination of susceptibility to intergranular corrosion - Wrought aluminium alloy products AL-P2XXX- series, AL-P7XXX- series and aluminium-lithium alloys

This European Standard specifies the procedure for the determination of the susceptibility to intergranular corrosion of wrought aluminium alloys in AL-P2XXX- series, AL-P7XXX- series and aluminium-lithium alloy products.
It does not consider health and safety requirements. It is the responsibility of the user to adopt appropriate health and safety precautions when hazardous substances are involved.

Luft- und Raumfahrt - Prüfverfahren - Bestimmung der Anfälligkeit für interkristalline Korrosion - Aluminium-Kneterzeugnisse aus AL-P2XXX- , AL-P7XXX- und Aluminium-Lithium-Legierung

Série aérospatiale - Méthodes d'essai - Détermination de la susceptibilité à la corrosion intergranulaire - Produits corroyés en alliages d'aluminium série AL-P2XXX-, série AL-P7XXX- et alliages d'aluminium-lithium

La présente Norme européenne spécifie la procédure pour la détermination de la susceptibilité à la corrosion intergranulaire des produits corroyés en alliage d’aluminium dans la série AL-P2XXX-, la série AL-P7XXX- et les produits en alliage d’aluminium-lithium.
Elle ne prend pas en compte les exigences en matière d'hygiène et de sécurité. Il est de la responsabilité de l'utilisateur d'adopter les précautions appropriées liées à l'hygiène et la sécurité lorsque des substances dangereuses sont impliquées.

Aeronavtika - Preskusna metoda – Ugotavljanje dovzetnosti za interkristalno korozijo - Izdelki iz aluminijeve zlitine serije AL-P2XXX, serije AL-P7XXX in aluminij-litijeve zlitine

Ta evropski standard določa postopek za ugotavljanje dovzetnosti za interkristalno korozijo pri izdelkih iz aluminijeve zlitine serije AL-P2XXX, serije AL-P7XXX in aluminij-litijeve zlitine.
Ne obravnava zdravstvenih in varnostnih zahtev. Za izvajanje ustreznih varnostnih in zdravstvenih ukrepov pri ravnanju z nevarnimi snovmi je odgovoren uporabnik.

General Information

Status
Published
Publication Date
06-Dec-2018
ICS
49.025.20 - Aluminium
Technical Committee
I13 - Imaginarni 13
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
29-Nov-2018
Due Date
03-Feb-2019
Completion Date
07-Dec-2018
Ref Project
EN 2716:2018 - Aerospace series - Test method - Determination of susceptibility to intergranular corrosion - Wrought aluminium alloy products AL-P2XXX- series, AL-P7XXX- series and aluminium-lithium alloys

Overview

EN 2716:2018 (CEN) defines an aerospace series test method to determine the susceptibility to intergranular corrosion (IGC) of wrought aluminium alloy products in the AL-P2XXX and AL-P7XXX series and aluminium-lithium alloys. The standard describes sample selection, chemical preparation, immersion testing, microscopic examination and acceptance criteria used to assess material integrity for aerospace applications. The standard does not cover health and safety precautions; users must apply appropriate safeguards when handling hazardous chemicals.

Key Topics

  • Scope: Procedure for assessing susceptibility to intergranular corrosion of specified wrought aluminium alloys used in aerospace components.

  • Test sample location and orientation: The manufacturer normally defines the test-sample location; the test direction shall be parallel to the working direction unless otherwise agreed.

  • Sample preparation:

    • Remove cladding for clad products by a suitable method.
    • Degrease in acetone.
    • Immerse for 1 minute at 95 °C ± 5 °C in a preparatory solution of nitric acid (70 %): 5 % vol, hydrofluoric acid (40 %): 0.5 % vol, balance demineralised water.
    • Rinse in demineralised water, desmutt in 70 % nitric acid at ambient temperature, rinse and dry.

  • Corrosion test:

    • Vertically immerse prepared samples in a freshly prepared test solution at 25 °C ± 5 °C for 6 hours.
    • Test solution: 57 g NaCl (analytical grade), 10 ml hydrogen peroxide (30 %), make up to 1 000 ml with demineralised water.
    • Use at least 10 ml of solution per cm² of specimen surface; electrically isolate multiple samples when immersed together.

  • Microscopic examination:

    • From the area with the most severe surface attack, take a section at least 20 mm long perpendicular to working direction.
    • Prepare and examine at 100× to 500× magnification.
    • Etch the section (nitric, hydrochloric, hydrofluoric acids in specified proportions) for up to 30 s, then re-examine.

  • Acceptance criteria: Results shall meet the requirements of the relevant technical specification, material standard, drawing, order or inspection schedule.

Applications

This test method is used by aerospace manufacturers, material suppliers and quality engineers to:

  • Evaluate IGC susceptibility during alloy qualification and lot acceptance.
  • Support corrosion risk assessments for structural components and fasteners.
  • Inform material selection and processing controls for AL-P2XXX, AL-P7XXX and aluminium-lithium alloys.

Related Standards

EN 2716:2018 is presented for harmonized national adoption. Users should refer to the applicable material standards, drawing requirements and inspection schedules for acceptance limits and to other aerospace corrosion and metallography standards where referenced by procurement or specification.

Keywords: intergranular corrosion, IGC, wrought aluminium alloys, AL-P2XXX, AL-P7XXX, aluminium-lithium, corrosion test, microscopic examination, aerospace.

Frequently Asked Questions

SIST EN 2716:2019 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Test method - Determination of susceptibility to intergranular corrosion - Wrought aluminium alloy products AL-P2XXX- series, AL-P7XXX- series and aluminium-lithium alloys". This standard covers: This European Standard specifies the procedure for the determination of the susceptibility to intergranular corrosion of wrought aluminium alloys in AL-P2XXX- series, AL-P7XXX- series and aluminium-lithium alloy products. It does not consider health and safety requirements. It is the responsibility of the user to adopt appropriate health and safety precautions when hazardous substances are involved.

This European Standard specifies the procedure for the determination of the susceptibility to intergranular corrosion of wrought aluminium alloys in AL-P2XXX- series, AL-P7XXX- series and aluminium-lithium alloy products. It does not consider health and safety requirements. It is the responsibility of the user to adopt appropriate health and safety precautions when hazardous substances are involved.

SIST EN 2716:2019 is classified under the following ICS (International Classification for Standards) categories: 49.025.20 - Aluminium. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN 2716:2019 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aeronavtika - Preskusna metoda – Ugotavljanje dovzetnosti za interkristalno korozijo - Izdelki iz aluminijeve zlitine serije AL-P2XXX, serije AL-P7XXX in aluminij-litijeve zlitineLuft- und Raumfahrt - Prüfverfahren - Bestimmung der Anfälligkeit für interkristalline Korrosion - Aluminium-Kneterzeugnisse aus AL-P2XXX- , AL-P7XXX- und Aluminium-Lithium-LegierungSérie aérospatiale - Méthodes d'essai - Détermination de la susceptibilité à la corrosion intergranulaire - Produits corroyés en alliages d'aluminium série AL-P2XXX-, série AL-P7XXX- et alliages d'aluminium-lithiumAerospace series - Test method - Determination of susceptibility to intergranular corrosion - Wrought aluminium alloy products AL-P2XXX- series, AL-P7XXX- series and aluminium-lithium alloys49.025.20AluminijAluminiumICS:Ta slovenski standard je istoveten z:EN 2716:2018SIST EN 2716:2019en,fr,de01-januar-2019SIST EN 2716:2019SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 2716
November
t r s z ICS
v {ä r t wä t r English Version
Aerospace series æ Test method æ Determination of susceptibility to intergranular corrosion æ Wrought aluminium alloy products ALæP tXXXæ seriesá ALæP yXXXæ series and aluminiumælithium alloys Série aérospatiale æ Méthodes d 5essai æ Détermination de la susceptibilité à la corrosion intergranulaire æ Produits corroyés en alliages d 5aluminium série ALæP tXXXæá série ALæP yXXXæ et alliages d 5aluminiumælithium
Luftæ und Raumfahrt æ Prüfverfahren æ Bestimmung der Anfälligkeit für interkristalline Korrosion æ AluminiumæKneterzeugnisse aus ALæP tXXXæ á ALæP yXXXæ und AluminiumæLithiumæLegierung This European Standard was approved by CEN on
s y September
t r s zä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
t y s xã t r s z ESIST EN 2716:2019
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

Loading comments...