SIST EN 3719:2025

Aerospace series - Aluminium or aluminium alloy conductors for electrical cables - Product standard

This document specifies the dimensions, linear resistance, mechanical characteristics, construction and mass of conductors in aluminium or aluminium alloy for electrical cables for aerospace applications.
It applies to stranded conductors with nominal cross-sections of 5 mm2 to 115 mm2 inclusive.

Luft- und Raumfahrt - Leiter aus Aluminium oder Aluminiumlegierung für elektrische Leitungen - Produktnorm

Dieses Dokument legt die Maße, den ohmschen Widerstand, die mechanischen Eigenschaften, den Aufbau und die Masse von Leitern aus Aluminium oder Aluminiumlegierung für elektrische Leitungen für Anwendungen in der Luft- und Raumfahrt fest.
Es ist anwendbar für verseilte Leiter mit Nennquerschnitten von 5 mm2 bis einschließlich 115 mm2.

Série aérospatiale - Conducteurs en aluminium ou en alliage d'aluminium pour câbles électriques - Norme de produit

Le présent document spécifie les dimensions, la résistance linéaire, les caractéristiques mécaniques, la construction et la masse des conducteurs en aluminium ou en alliage d'aluminium pour les câbles électriques utilisés dans les applications aérospatiales.
Il s'applique aux conducteurs toronnés ayant une section nominale de 5 mm2 à 115 mm2 incluse.

Aeronavtika - Vodniki za električne kable iz aluminija in aluminijevih zlitin - Standard za proizvod

Ta dokument določa mere, linearno odpornost, mehanske lastnosti, strukturo ter maso vodnikov za električne kable iz aluminija in aluminijevih zlitin za uporabo v aeronavtiki. Uporablja se za pramenaste vodnike z nazivnim premerom od 5 mm2 do vključno 115 mm2.

General Information

• Status: Published
• Public Enquiry End Date: 05-May-2024
• Publication Date: 18-Jun-2025
• 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: 16-Jun-2025
• Due Date: 21-Aug-2025
• Completion Date: 19-Jun-2025
• Ref Project: EN 3719:2025 - Aerospace series - Aluminium or aluminium alloy conductors for electrical cables - Product standard

Relations

• Revises: SIST EN 3719:2018 - Aerospace series - Aluminium or aluminium alloy conductors for electrical cables - Product standard
• Effective Date: 26-Apr-2023

Overview

EN 3719:2025 - Aerospace series - Aluminium or aluminium alloy conductors for electrical cables - Product standard is a CEN/ASD-STAN specification for stranded aluminium conductors used in aerospace electrical cables. Approved in June 2025 and superseding EN 3719:2018, it defines materials, dimensions, linear resistance, mechanical characteristics, conductor construction and mass for nominal cross-sections 5 mm² to 115 mm² inclusive.

Key topics and technical requirements

• Materials: Conductors must use annealed aluminium AW‑1110 (Al 99.1) or specified aluminium alloys with chemical limits referenced to EN 573‑3+A2 and EN 1715‑2.
• Electrical and mechanical limits:
  • Maximum resistivity: 3.0 × 10⁻⁸ Ω·m (≈ 30 Ω·m/km).
  • Strand elongation: ≥ 10%.
  • Strand tensile strength: ≥ 105 MPa.
• Plating options and codes:
  • Code A: unplated aluminium alloy
  • Code B: tin plated
  • Code C: silver plated (min 1.0 µm)
  • Code D: nickel plated (min 1.0 µm)
• Construction and dimensions:
  • Applies to stranded conductors with strand diameters shown for specific constructions (examples include strand Ø 0.51 mm and 0.37 mm).
  • Lay length rules: outer-layer lay typically 8× to 16× conductor diameter; larger sectional areas limited to ≤ 30× for basic concentric/bunched conductors.
  • Joints: only butt joints; distance between strand joints must exceed 3 m.
  • Compaction: plated conductors must not have plating-damaging compaction; unplated may be compacted (minimum compaction rate 95%).
• Mass, resistance and dimensional tables: Nominal resistance (Ω/km) and mass (kg/km) are specified per cross‑section in Tables 2 and 3 of the standard.
• Testing and quality assurance:
  • Test methods refer to the EN 3475 series (visual, mass, dimensions, ohmic resistance, tensile, plating tests, solderability).
  • Quality assurance per EN 9133.

Applications and who uses EN 3719:2025

• Intended for manufacturers of aerospace electrical cables and conductors, OEMs, harness suppliers, aerospace electrical engineers, procurement and qualification laboratories.
• Practical uses: design and production of aircraft and spacecraft cable cores and power distribution conductors where aluminium (lighter than copper) is required with defined electrical/mechanical performance and traceable production/testing practices.

Related standards

• EN 573‑3+A2 (Aluminium chemical composition)
• EN 1715‑2 (Drawing stock for electrical applications)
• EN 3475 series (cable test methods: Parts 100, 201, 202, 203, 301, 418, 505–509)
• EN 9133 (Quality management and product qualification)

EN 3719:2025 is essential when specifying or procuring aluminium conductor cores for aerospace electrical cables to ensure compliance with harmonized European aerospace product requirements.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2025
Aeronavtika - Vodniki za električne kable iz aluminija in aluminijevih zlitin -
Standard za proizvod
Aerospace series - Aluminium or aluminium alloy conductors for electrical cables -
Product standard
Luft- und Raumfahrt - Leiter aus Aluminium oder Aluminiumlegierung für elektrische
Leitungen - Produktnorm
Série aérospatiale - Conducteurs en aluminium ou en alliage d'aluminium pour câbles
électriques - Norme de produit
Ta slovenski standard je istoveten z: EN 3719:2025
ICS:
49.025.20 Aluminij Aluminium
49.060 Letalska in vesoljska Aerospace electric
električna oprema in sistemi equipment and systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 3719
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2025
EUROPÄISCHE NORM
ICS 49.060 Supersedes EN 3719:2018
English Version
Aerospace series - Aluminium or aluminium alloy
conductors for electrical cables - Product standard
Série aérospatiale - Conducteurs en aluminium ou en Luft- und Raumfahrt - Leiter aus Aluminium oder
alliage d'aluminium pour câbles électriques - Norme de Aluminiumlegierung für elektrische Leitungen -
produit Produktnorm
This European Standard was approved by CEN on 14 April 2025.

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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3719:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms, definitions and symbols . 5
4 Conductor materials and construction . 5
4.1 Materials . 5
4.2 Material for individual strands and code . 5
4.3 Aluminium or aluminium alloy. 5
4.4 Construction of conductors . 6
4.4.1 Lay length . 6
4.4.2 Joints . 6
4.4.3 Compaction . 6
5 Required characteristics . 6
6 Test methods . 9
7 Quality assurance . 9
8 Designation . 9
9 Marking, packaging and delivery lengths . 10
Bibliography . 11

European foreword
This document (EN 3719:2025) has been prepared by ASD-STAN.
After enquiries and votes carried out in accordance with the rules of this Association, this document has
received the approval of the National Associations and the Official Services of the member countries of
ASD-STAN, prior to its presentation to CEN.
This document shall be given the status of a national standard, either by publication of an identical text
or by endorsement, at the latest by December 2025, and conflicting national standards shall be
withdrawn at the latest by December 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document will supersede EN 3719:2018.
2 2
— correction of typo in the scope: 115 mm inclusive rather than 107 mm inclusive;
— update of Clause 2 “Normative references”;
— redrawing of Table 1 “Chemical composition of aluminium alloy”;
— addition of conductor construction for cross-section code 115 in Table 3 “Conductor constructions
with strand ⌀ 0,37 mm”.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this document: 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, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
1 Scope
This document specifies the dimensions, linear resistance, mechanical characteristics, construction and
mass of conductors in aluminium or aluminium alloy for electrical cables for aerospace applications.
2 2
It applies to stranded conductors with nominal cross-sections of 5 mm to 115 mm inclusive.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 573-3+A2, Aluminium and aluminium alloys — Chemical composition and form of wrought
products — Part 3: Chemical composition and form of products
EN 1715-2, Aluminium and aluminium alloys — Drawing stock — Part 2: Specific requirements for
electrical applications
EN 3475-100, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 100: General
EN 3475-201, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 201: Visual
examination
EN 3475-202, Aerospace series — Cables, electrical, aircraft use — Test methods — Part 2
...