SIST EN 3475-514:2014

Aerospace series - Cables, electrical, aircraft use - Test methods - Part 514: Porosity of copper cladding on aluminium strands

This European Standard specifies an assessment method of the copper porosity on copper clad aluminium strands with or without external coating or on Nickel or silver copper clad aluminium conductors.
It shall be used together with EN 3475-100.

Luft- und Raumfahrt - Elektrische Leitungen für Luftfahrtverwendung - Prüfverfahren - Teil 514: Porosität von Einzeldrähten aus Aluminium mit einer Kupferauflage

Série aérospatiale - Câbles électriques à usage aéronautique - Méthodes d’essais - Partie 514: Porosité d’un revêtement cuivre sur des brins aluminium

Aeronavtika - Električni kabli za uporabo v zračnih plovilih - Preskusne metode - 514. del: Poroznost bakrene obloge na aluminijevih žicah

EN 3475-514 določa preskusno metodo za poroznost bakrene obloge na aluminijevih žicah z ali brez zunanje prevleke ali poroznost bakrene obloge na nikljevih ali srebrnih žicah na aluminijevih vodnikih. Uporabljal naj bi se s standardom EN 3475-100.

General Information

• Status: Published
• Publication Date: 28-May-2014
• ICS: 49.025.20 - Aluminium
• ICS: 49.060 - Aerospace electric equipment and systems
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 14-May-2014
• Due Date: 19-Jul-2014
• Completion Date: 29-May-2014
• Ref Project: EN 3475-514:2014 - Aerospace series - Cables, electrical, aircraft use - Test methods - Part 514: Porosity of copper cladding on aluminium strands

Relations

• Replaces: SIST EN 3475-514:2007 - Aerospace series - Cables, electrical, aircraft use - Test methods - Part 514: Porosity of copper cladding on aluminium strands
• Effective Date: 01-Jul-2014

Overview - EN 3475-514:2014 (Porosity of copper cladding on aluminium strands)

EN 3475-514:2014 is a CEN aerospace test method that specifies how to assess porosity of copper cladding on copper‑clad aluminium strands and on nickel‑ or silver‑coated copper‑clad aluminium conductors. The standard is intended for use together with EN 3475-100 (general test methods) and supersedes the 2007 edition. It defines specimen preparation, the acid immersion inspection method and the acceptance requirement (visual detection of bubbles) to determine whether copper cladding has defects that expose the aluminium core.

Key topics and technical requirements

• Scope: Applies to copper‑clad aluminium wire or strand (all classes as per ASTM B 566) and to nickel or silver coated variants (ASTM B 298, ASTM B 355 referenced).
• Specimen size and handling:
  • Specimen length: 2.30 m ± 10%.
  • Do not touch test surfaces with bare fingers; surface must be free of oil/contaminants.
  • Cleaning: wipe with lint‑free material and an organic solvent (example: alcohol/ether 50/50).
  • To limit curvature stress, wrap strand samples on a mandrel (40 mm) or wind stranded conductors around a diameter ≈ 200× strand diameter; remove ends from windings for ~0.15 m.
• Test method:
  • The central ~2 m of the specimen is immersed (ends must remain out of solution) in a pure hydrochloric acid solution of density 1.088 g/cm3 at 20 °C.
  • Immersion procedure and times are specified separately for single strands and complete conductors (see clause 5 of the standard).
  • During immersion, inspect visually for bubbling caused by acid contacting exposed aluminium.
• Acceptance criterion:
  • No bubbles shall rise from the specimen surface to the solution surface. Visible adherent bubbles alone are not conclusive evidence of porosity - the test focuses on actively rising bubbles indicating reaction with aluminium.

Applications and users

• Practical uses:
  • Incoming inspection and quality control of aerospace electrical cables and conductors.
  • Process control during copper cladding and coating manufacture.
  • Failure analysis and root‑cause evaluation of conductor surface defects.
• Typical users:
  • Cable and conductor manufacturers, aerospace OEMs and subcontractors, independent testing laboratories, quality assurance and materials engineers in the aerospace and defence sectors.

Related standards

• EN 3475-100 (general test methods) - to be used together with EN 3475-514.
• ASTM B 566 (copper‑clad aluminium wire classification), ASTM B 298 (silver coated copper wire), ASTM B 355 (nickel coated copper wire) - normative references cited by the standard.

Keywords: EN 3475-514:2014, porosity test, copper cladding, aluminium strands, aerospace cables, conductor inspection, hydrochloric acid test, cable quality control.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Elektrische Leitungen für Luftfahrtverwendung - Prüfverfahren - Teil 514: Porosität von Einzeldrähten aus Aluminium mit einer KupferauflageSérie aérospatiale - Câbles électriques à usage aéronautique - Méthodes d’essais - Partie 514: Porosité d’un revêtement cuivre sur des brins aluminiumAerospace series - Cables, electrical, aircraft use - Test methods - Part 514: Porosity of copper cladding on aluminium strands49.060Aerospace electric equipment and systems49.025.20AluminijAluminiumICS:Ta slovenski standard je istoveten z:EN 3475-514:2014SIST EN 3475-514:2014en,fr,de01-julij-2014SIST EN 3475-514:2014SLOVENSKI
STANDARDSIST EN 3475-514:20071DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 3475-514
April 2014 ICS 49.060 Supersedes EN 3475-514:2007English Version
Aerospace series - Cables, electrical, aircraft use - Test methods - Part 514: Porosity of copper cladding on aluminium strands
Série aérospatiale - Câbles électriques à usage aéronautique - Méthodes d'essais - Partie 514: Porosité d'un revêtement cuivre sur des brins aluminium
Luft- und Raumfahrt - Elektrische Leitungen für Luftfahrtverwendung - Prüfverfahren - Teil 514: Porosität von Einzeldrähten aus Aluminium mit einer Kupferauflage This European Standard was approved by CEN on 12 October 2013.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
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