EN 3311:2023

Aerospace series - Titanium alloy TI-P64001 (Ti-6Al-4V) - Annealed - Bars for machining - D ≤ 300 mm - 900 MPa ≤ Rm ≤ 1 160 MPa

This document specifies the requirements relating to:
Titanium alloy TI-P64001 (Ti-6Al-4V)
Annealed
Bars for machining
D < 300 mm
900 MPa ≤ Rm ≤ 1 160 MPa
for aerospace applications

Luft- und Raumfahrt - Titanlegierung TI-P64001 (Ti-6Al-4V) - Geglüht - Stangen zum Zerspanen - D ≤ 300 mm - 900 MPa ≤ Rm ≤ 1 160 MPa

Dieses Dokument legt die Anforderungen an:
Titanlegierung TI P64001 (Ti 6Al 4V)
Geglüht
Stangen zum Zerspanen
D ≤ 300 mm
900 MPa ≤ Rm ≤ 1 160 MPa
für Anwendungen in der Luft- und Raumfahrt fest.

Série aérospatiale - Alliage de titane TI-P64001 (Ti-6Al-4V) - Recuit - Barres pour usinage - D ≤ 300 mm - 900 MPa ≤ Rm ≤ 1 160 MPa

Le présent document spécifie les exigences relatives à :
Alliage de titane TI-P64001 (Ti-6Al-4V)
Recuit
Barres pour usinage
D < 300 mm
900 MPa ≤ Rm ≤ 1 160 MPa
pour les applications aérospatiales.

Aeronavtika - Titanova zlitina TI-P64001 (Ti-6Al-4V) - Žarjeno - Palice za obdelavo - D ≤ 300 mm - 900 MPa ≤ Rm ≤ 1160 MPa

Ta dokument določa zahteve, ki se navezujejo na:
titanovo zlitino TI-P64001 (Ti-6Al-4V)
žarjene
palice za obdelavo
D < 300 mm
900 MPa ≤ Rm ≤ 1160 MPa
za uporabo v aeronavtiki

General Information

• Status: Published
• Publication Date: 19-Dec-2023
• ICS: 49.025.30 - Titanium
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 4/S 1 - Aluminium
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 20-Dec-2023
• Completion Date: 20-Dec-2023
• Ref Project: SIST EN 3311:2024 - Aerospace series - Titanium alloy TI-P64001 (Ti-6Al-4V) - Annealed - Bars for machining - D ≤ 300 mm - 900 MPa ≤ Rm ≤ 1 160 MPa

Relations

• Replaces: EN 3311:2009 - Aerospace series - Titanium alloy TI-P64001 (Ti-6Al-4V) - Annealed - Bar for machining - D < 110 mm
• Effective Date: 19-Jan-2023

Overview

EN 3311:2023 is a CEN aerospace material standard that defines requirements for titanium alloy TI‑P64001 (Ti‑6Al‑4V) in the annealed condition for bars for machining. It applies to bars with diameters up to D ≤ 300 mm and a tensile strength range 900 MPa ≤ Rm ≤ 1 160 MPa. Published December 2023 and prepared by ASD‑STAN, this edition supersedes EN 3311:2010 and extends the maximum bar diameter from 100 mm to 300 mm.

Key topics and technical requirements

• Material designation: Titanium alloy TI‑P64001 (Ti‑6Al‑4V) with specified chemical composition limits for elements such as Al, V, O+2N, N, H, Fe, C and Ti (see EN 3311 Table 1 for exact ranges).
• Delivery condition: Annealed, heat treatment typically 690 °C ≤ θ ≤ 840 °C, minimum hold t ≥ 30 min, air cooling (AC) or inert atmosphere. Delivery condition code A.
• Mechanical properties:
  • Tensile strength Rm between 900 and 1 160 MPa.
  • Proof stress Rp0.2 ≥ 830 MPa.
  • Minimum elongation A ≥ 8–10% (depending on diameter) and reduction of area Z ≥ 20–25%.
• Dimensions: Bars for machining with D ≤ 300 mm; smaller diameter classes have tighter acceptance limits.
• Microstructure and macrostructure: Microstructure acceptance criteria referenced to EN 3114‑002; macrostructure criteria per EN 2954‑002.
• Non‑destructive inspection: Ultrasonic testing requirements per EN 4050‑1 with inspection class 5 for D ≤ 100 mm and class 4 for D > 100 mm. Visual inspection per EN 4800‑002.
• Testing and sampling: Defines direction of test pieces, temperatures (ambient), and which characteristics are mandatory for acceptance testing. Product qualification programs are agreed between manufacturer and purchaser.

Applications and who uses this standard

• Primary users: aerospace manufacturers, material suppliers, procurement and quality engineers, and design engineers specifying raw material for structural and machined aerospace components.
• Typical applications: precision machined aerospace parts where high strength, corrosion resistance and favorable strength‑to‑weight ratio of Ti‑6Al‑4V are required - e.g., landing gear components, fasteners, machined structural fittings (raw‑material specification stage).
• Value: Ensures consistent chemical and mechanical properties, traceable inspection and testing, and compatibility with aerospace procurement and manufacturing workflows.

Related standards

• EN 2954‑002 - macrostructure of titanium wrought products
• EN 3114‑002 - microstructure test method for (α+β) titanium alloys
• EN 4050‑1 - ultrasonic inspection of bars, plates and forgings
• EN 4267 - dimensions for round titanium bars (6 mm ≤ D ≤ 160 mm)
• EN 4800‑002 - technical specification for titanium bars and sections

EN 3311:2023 provides a clear, auditable specification for Ti‑6Al‑4V annealed bars for machining used in aerospace supply chains, supporting quality control, procurement, and design conformity.

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2024
Aeronavtika - Titanova zlitina TI-P64001 (Ti-6Al-4V) - Žarjeno - Palice za obdelavo -
D ≤ 300 mm - 900 MPa ≤ Rm ≤ 1160 MPa
Aerospace series - Titanium alloy TI-P64001 (Ti-6Al-4V) - Annealed - Bars for machining
- D ≤ 300 mm - 900 MPa ≤ Rm ≤ 1 160 MPa
Luft- und Raumfahrt - Titanlegierung TI-P64001 (Ti-6Al-4V) - Geglüht - Stangen zum
Zerspanen - D ≤ 300 mm - 900 MPa ≤ Rm ≤ 1 160 MPa
Série aérospatiale - Alliage de titane TI-P64001 (Ti-6Al-4V) - Recuit - Barres pour
usinage - D ≤ 300 mm - 900 MPa ≤ Rm ≤ 1 160 MPa
Ta slovenski standard je istoveten z: EN 3311:2023
ICS:
49.025.30 Titan Titanium
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 3311
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2023
EUROPÄISCHE NORM
ICS 49.025.30 Supersedes EN 3311:2009
English Version
Aerospace series - Titanium alloy TI-P64001 (Ti-6Al-4V) -
Annealed - Bars for machining - D  300 mm - 900 MPa 
Rm  1 160 MPa
Série aérospatiale - Alliage de titane TI-P64001 (Ti- Luft- und Raumfahrt - Titanlegierung TI-P64001 (Ti-
6Al-4V) - Recuit - Barres pour usinage - D  300 mm - 6Al-4V) - Geglüht - Stangen zum Zerspanen - D  300
900 MPa  Rm  1 160 MPa mm - 900 MPa  Rm  1 160 MPa
This European Standard was approved by CEN on 15 October 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 3311:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Requirements . 5
Bibliography . 9

European foreword
This document (EN 3311:2023) has been prepared by the Aerospace and Defence Industries
Association of Europe — Standardization (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 June 2024, and conflicting national standards shall be withdrawn at
the latest by June 2024.
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 supersedes EN 3311:2010.
Compared with EN 3311:2010, the following changes have been made:
— diameters of bars have been increased from 100 mm up to 300 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
Kingd
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