SIST EN 3628:2023

Aerospace series - Lockwire, drawn - Corrosion resisting steel

This document specifies the dimensions and tolerances for drawn corrosion resisting steel lockwire for aerospace applications.

Luft- und Raumfahrt - Sicherungsdraht, gezogen - Korrosionsbeständiger Stahl

Dieses Dokument legt die Maße und Grenzabmaße für gezogenen Sicherungsdraht aus korrosionsbeständigem Stahl für Anwendungen in der Luft- und Raumfahrt fest.

Série aérospatiale - Fils à freiner étirés - Acier résistant à la corrosion

Le présent document spécifie les dimensions et tolérances des fils à freiner étirés en acier résistant à la corrosion pour les applications aérospatiales.

Aeronavtika - Vlečena zaklepna žica - Korozijsko odporna pločevina

Ta dokument določa mere in tolerance za vlečeno zaklepno jekleno žico, odporno proti koroziji, za uporabo v aeronavtiki.

General Information

• Status: Published
• Publication Date: 23-Oct-2023
• ICS: 49.025.10 - Steels
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 11-Oct-2023
• Due Date: 16-Dec-2023
• Completion Date: 24-Oct-2023
• Ref Project: EN 3628:2023 - Aerospace series - Lockwire, drawn - Corrosion resisting steel

Overview

SIST EN 3628:2023 is a European standard developed by CEN that specifies the dimensions and tolerances for drawn corrosion resisting steel lockwire tailored for aerospace applications. This standard ensures that lockwire used in aerospace assemblies meets stringent requirements for quality, consistency, and corrosion resistance, critical for aircraft safety and performance. The steel used adheres to aerospace-grade material standards, guaranteeing durability under demanding operational environments.

Published in September 2023, SIST EN 3628:2023 replaces previous versions and harmonizes lockwire specifications across Europe, enabling manufacturers and suppliers to comply with consistent technical requirements. The lockwire described is made from corrosion-resistant steel as per EN 2573, enhancing longevity and resistance to environmental factors.

Key Topics

• Material Requirements:
  SIST EN 3628:2023 mandates the use of corrosion resisting steel compliant with EN 2573 (Steel X6CrNiTi18-10). This ensures high corrosion resistance and mechanical properties suitable for aerospace.

• Wire Form and Dimensions:
  The lockwire is specified as drawn wire with precise diameters ranging from 0.5 mm up to 2 mm. The package includes mass per meter data and tolerance limits on diameter to ensure quality control during manufacture.

• Tolerances and Roundness:
  Diameter tolerances follow ISO 245, allowing variances of ±0.04 mm for diameters under 1 mm, and ±0.05 mm for diameters between 1 mm and 2 mm. Roundness must also fall within these specified diameter tolerances to maintain consistent performance.

• Designation and Traceability:
  The lockwire designation is aligned with EN 2600, providing uniform rules for naming metallic semi-finished products, essential for traceability and quality assurance in aerospace supply chains.

Applications

• Aircraft Assembly and Maintenance:
  Lockwire produced per SIST EN 3628:2023 is widely used in securing fasteners and critical mechanical joints on aircraft to prevent loosening due to vibration and thermal stresses.

• Aerospace Components Manufacturing:
  The drawn corrosion resisting steel lockwire is integral to manufacturing processes that require reliable locking mechanisms under rigorous environmental exposure, such as high altitude and humidity.

• Safety-Critical Fastening:
  Using lockwire that meets EN 3628 ensures safety and compliance with aerospace regulations, minimizing risks of component failure linked to fastener loosening.

• Corrosion Resistant Solutions:
  Applications demanding long-term resistance to corrosion, such as external aircraft assemblies and engine mounts, benefit significantly from the material specifications in this standard.

Related Standards

• EN 2573: Specifies the chemical composition and mechanical properties of the corrosion resisting steel used for the lockwire in EN 3628.
• EN 2600: Provides the rules for designation of metallic semi-finished products, including lockwire, crucial for standard naming and classification.
• ISO 245: Defines diameter measurement and tolerances specific to aerospace lockwire, reinforcing dimensional accuracy requirements.

By adhering to SIST EN 3628:2023, aerospace manufacturers ensure high-quality, corrosion-resistant lockwire that meets rigorous dimensional and material standards for safe and reliable aircraft operation. This standard supports harmonization across European aerospace industries, contributing to improved supply chain efficiency and operational safety.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2023
Aeronavtika - Vlečena zaklepna žica - Korozijsko odporna pločevina
Aerospace series - Lockwire, drawn - Corrosion resisting steel
Luft- und Raumfahrt - Sicherungsdraht, gezogen - Korrosionsbeständiger Stahl
Série aérospatiale - Fils à freiner étirés - Acier résistant à la corrosion
Ta slovenski standard je istoveten z: EN 3628:2023
ICS:
49.025.10 Jekla Steels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 3628
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2023
EUROPÄISCHE NORM
ICS 49.025.10
English Version
Aerospace series - Lockwire, drawn - Corrosion resisting
steel
Série aérospatiale - Fils à freiner étirés - Acier résistant Luft- und Raumfahrt - Sicherungsdraht, gezogen -
à la corrosion Korrosionsbeständiger Stahl
This European Standard was approved by CEN on 16 July 2023.

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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3628:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Requirements . 4
4.1 Material . 4
4.2 Form. 4
4.3 Dimensions and masses . 5
4.3.1 Diameters and masses . 5
4.3.2 Tolerances on diameters . 5
4.4 Roundness . 5
4.5 Lengths. 5
5 Designation .
...