EN 4020:2009
(Main)Aerospace series - Pipe coupling 8°30' in titanium alloy - Elbows 90°, welded end with thrust wire nut
Aerospace series - Pipe coupling 8°30' in titanium alloy - Elbows 90°, welded end with thrust wire nut
This standard specifies the characteristics of elbows 90°, welded end, with thrust wire nut, for pipe couplings 8°30', in titanium alloy, for aerospace applications.
Nominal pressure: up to 28 000 kPa
Temperature range: -55 °C to 135 °C
Luft- und Raumfahrt - Rohrverschraubung 8°30' aus Titanlegierung - Winkelverschraubungen 90° mit Anschweißende, mit Mutter mit Schubdraht
Diese Norm legt die Eigenschaften von Winkelverschraubungen 90° mit Anschweißende mit Mutter mit
Schubdraht, für Rohrverschraubungen 8°30', aus Titanlegierung, zur Verwendung in der Luft- und Raumfahrt
fest.
Nenndruck: bis 28 000 kPa.
Temperaturbereich: –55 °C bis 135 °C.
Série aérospatiale - Système de raccordement 8°30' en alliage de titane - Raccords coudés à 90° à souder, avec écrou à jonc
Aeronavtika - Cevni priključek 8°30' iz titanove zlitine - Kotni cevni priključek 90° z zavarjenim koncem in matico s potisno žico
General Information
Relations
Overview
EN 4020:2009 is a European standard developed by CEN for aerospace fluid system components, specifically focusing on pipe couplings with elbows at a 90° angle in titanium alloy. These components feature welded ends combined with thrust wire nuts and are designed for pipe couplings forming an 8°30' angle. This standard governs the design, material, dimensional, and quality requirements for elbows used in high-performance aerospace piping systems.
Key performance parameters include a nominal pressure rating of up to 28,000 kPa and an operational temperature range from -55 °C to 135 °C, making it suitable for demanding aerospace environments.
Key Topics
- Component Scope: Covers elbows at 90° angle with welded ends and thrust wire nut connections, for 8°30' titanium alloy pipe couplings.
- Materials: Titanium alloy in compliance with aerospace-specific grades and treatments as defined in EN 3311, EN 3312, EN 3314, and EN 3315.
- Dimensional Specifications: Precise dimensions and mass values are detailed to ensure compatibility and performance, following geometric configurations outlined in EN 2656 and EN 3273.
- Surface Requirements: The standard requires specific surface roughness parameters, internal surface finishing with a radius of 0.3 to 1.0 mm and a maximum roughness of 0.8 µm, and strict rules against hand deburring to maintain integrity.
- Surface Treatment: Welded ends must have a minimum untreated area of 10 mm, with lubricated thrust wire areas treated according to EN 2491 with molybdenum disulphide dry lubricants to ensure durability and function.
- Marking and Identification: Markings comply with aerospace standards (EN 2424), including style A marking to aid traceability and standardized identification.
- Quality Assurance: Components must meet qualification and quality management processes as per EN 9133, guaranteeing adherence to aerospace certification and reliability standards.
- Temperature and Pressure Range: Components are certified to withstand nominal pressures up to 28 MPa and operate effectively in temperatures ranging from -55 °C to 135 °C.
Applications
EN 4020:2009 compliant pipe couplings are critical for aerospace fluid systems requiring high-strength, corrosion-resistant connections under extreme pressure and temperature conditions. Typical applications include:
- Aerospace Fuel and Hydraulic Systems: Ensuring leak-proof, durable connections in aircraft fuel lines and hydraulic circuits.
- Environmental Control Systems: Maintaining safe and efficient operation of pressurized fluid pathways exposed to varying temperatures.
- Aircraft Structural Systems: Durable pipe coupling solutions for titanium alloy tubing used in airframe assemblies and engine components.
- Military and Spacecraft Engineering: Providing reliable fluid system couplings in aerospace defense and space exploration vehicles where titanium alloy’s strength-to-weight ratio is critical.
Related Standards
- EN 2656: Aerospace series - Pipe coupling, welded coupling end geometric configuration.
- EN 3273 & EN 3275: Geometric and technical specifications for pipe coupling dynamic beam seal ends.
- EN 3264 & EN 4032: Specifications related to thrust wire nuts and thrust wire elements for pipe coupling.
- EN 2491: Methods for applying molybdenum disulphide dry lubricants to aerospace components.
- EN 9133: Quality management system requirements and qualification procedures for aerospace standard parts.
- EN 3311 to EN 3315: Titanium alloy grade specifications including annealing, forging, and solution treatments.
- EN 2424: Marking requirements for aerospace products to ensure traceability and compliance.
- ISO 5855-3: Limits for MJ thread dimensions in aerospace fluid system fittings.
By adhering to EN 4020:2009, aerospace manufacturers and suppliers ensure that titanium alloy pipe couplings with welded 90° elbows and thrust wire nuts meet rigorous quality, safety, and performance demands essential for modern aircraft and spacecraft fluid systems. This standard supports the development of lightweight, corrosion-resistant, and highly reliable piping components enabling advanced aerospace engineering solutions.
Frequently Asked Questions
EN 4020:2009 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Pipe coupling 8°30' in titanium alloy - Elbows 90°, welded end with thrust wire nut". This standard covers: This standard specifies the characteristics of elbows 90°, welded end, with thrust wire nut, for pipe couplings 8°30', in titanium alloy, for aerospace applications. Nominal pressure: up to 28 000 kPa Temperature range: -55 °C to 135 °C
This standard specifies the characteristics of elbows 90°, welded end, with thrust wire nut, for pipe couplings 8°30', in titanium alloy, for aerospace applications. Nominal pressure: up to 28 000 kPa Temperature range: -55 °C to 135 °C
EN 4020:2009 is classified under the following ICS (International Classification for Standards) categories: 49.080 - Aerospace fluid systems and components. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 4020:2009 has the following relationships with other standards: It is inter standard links to EN 4020:2001. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN 4020:2009 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Rohrverschraubung 8°30' aus Titanlegierung - Winkelverschraubungen 90° mit Anschweißende, mit Mutter mit SchubdrahtSérie aérospatiale - Système de raccordement 8°30' en alliage de titane - Raccords coudés à 90° à souder, avec écrou à joncAerospace series - Pipe coupling 8°30' in titanium alloy - Elbows 90°,
welded end with thrust wire nut49.080Aerospace fluid systems and componentsICS:Ta slovenski standard je istoveten z:EN 4020:2009SIST EN 4020:2009en01-september-2009SIST EN 4020:2009SLOVENSKI
STANDARDSIST EN 4020:20041DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4020
July 2009 ICS 49.080 Supersedes EN 4020:2001 English Version
Aerospace series - Pipe coupling 8°30' in titanium alloy - Elbows 90°,
welded end with thrust wire nut
Série aérospatiale - Système de raccordement 8°30' en alliage de titane - Raccords coudés à 90° à souder, avec écrou à jonc
Luft- und Raumfahrt - Rohrverschraubung 8°30' aus Titanlegierung - Winkelverschraubungen 90° mit Anschweißende, mit Mutter mit Schubdraht This European Standard was approved by CEN on 12 March 2009.
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 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 Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4020:2009: ESIST EN 4020:2009
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