prEN 3628

Lockwire drawn - Corrosion resisting steel

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

Luft- und Raumfahrt; Sicherungsdrähte, gezogen, aus korrosionsbeständigem Stahl

Fils à freiner étirés - Aciers inoxydables

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

General Information

• Status: Not Published
• Publication Date: 24-Apr-2024
• ICS: 49.025.10 - Steels
• ICS: 49.025.99 - Other materials
• Technical Committee: ASD/MAT - Materials
• Drafting Committee: ASD-STAN/D 4/S 3 - Steels & Heat Resisting Alloys
• Current Stage: 3098 - Decision to reject - Consensus building
• Start Date: 01-Mar-2011
• Completion Date: 01-Mar-2011
• Ref Project: oSIST prEN 3628:2022 - Aerospace series - Lockwire, drawn - Corrosion resisting steel

Overview

prEN 3628 (2022) - "Aerospace series: Lockwire, drawn - Corrosion resisting steel" - is a draft CEN/ASD‑STAN standard that specifies the dimensions and tolerances for corrosion‑resisting steel drawn lockwire used in aerospace applications. The document defines accepted wire diameters, nominal masses, allowable diameter tolerances and roundness requirements, and references the required material and designation standards for procurement and quality control.

Key topics and technical requirements

• Scope: Applies to corrosion resisting steel drawn lockwire intended for aerospace use; focuses on geometric and mass characteristics rather than performance properties.
• Material: Wire material shall conform to EN 2573 (Steel X6CrNiTi18‑10 / 1.4541) - see the standard for metallurgical and heat‑treatment requirements.
• Form: Wire form and diameter are defined graphically; diameter is the principal dimension (D).
• Diameters and nominal mass (kg/m):
  • 0.50 mm - 0.0015 kg/m
  • 0.63 mm - 0.0031 kg/m
  • 0.80 mm - 0.0039 kg/m
  • 1.00 mm - 0.0061 kg/m
  • 1.25 mm - 0.0123 kg/m
  • 1.60 mm - 0.0157 kg/m
  • 1.80 mm - 0.0198 kg/m
  • 2.00 mm - 0.0241 kg/m (Masses calculated using a reference density of 7.8 kg/dm3.)
• Tolerances on diameters (in accordance with ISO 245):
  • 0.5 ≤ D < 1.0 mm: ±0.04 mm
  • 1.0 ≤ D < 2.0 mm: ±0.05 mm
• Roundness: Wire roundness must be contained within the specified diameter tolerances.
• Lengths: Not specified in this document - length requirements are to be agreed between purchaser and supplier.
• Designation: Use EN 2600 rules for designation of metallic semi‑finished products.

Practical applications

• Lockwire (safety wire) for securing fasteners, safety‑critical assemblies and components on aircraft, helicopters and aerospace ground equipment.
• Specification used by purchasers and suppliers to ensure the correct corrosion resisting steel wire geometry and mass for manufacturing, assembly and maintenance tasks.
• Useful for quality control, inspection, material traceability and parts procurement where consistent wire sizes and tolerances are required.

Who uses this standard

• Aerospace OEMs and suppliers
• Procurement and quality assurance engineers
• Maintenance, repair and overhaul (MRO) organizations
• Fastener and locking‑wire manufacturers
• Design engineers specifying locking methods in airframe and engine assemblies

Related standards

• ISO 245 - Aerospace - Lockwire - Diameters (tolerance reference)
• EN 2573 - Aerospace series - Steel X6CrNiTi18‑10 (1.4541) - Wires
• EN 2600 - Designation of metallic semi‑finished products

Keywords: prEN 3628, lockwire, corrosion resisting steel, aerospace lockwire, wire diameters, tolerances, EN 2573, ISO 245, EN 2600.

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2022
Aeronavtika - Vlečena zaklepna žica - Korozijsko odporna pločevina
Aerospace series - Lockwire, drawn - Corrosion resisting steel
Luft- und Raumfahrt - Sicherungsdraht, gezogen - Aus korrosionsbeständigem Stahl
Série aérospatiale - Fils à freiner étirés - Acier résistant à la corrosion
Ta slovenski standard je istoveten z: prEN 3628
ICS:
49.025.99 Drugi materiali Other materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2022
ICS 49.025.99
English Version
Aerospace series - Lockwire, drawn - Corrosion resisting
steel
Série aérospatiale - Fils à freiner étirés - Acier résistant Luft- und Raumfahrt - Sicherungsdraht, gezogen - Aus
à la corrosion korrosionsbeständigem Stahl
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee ASD-
STAN.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, Turkey and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 3628:2022 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 Toleran
...