FprEN 2955

SLOVENSKI STANDARD
oSIST prEN 2955:2024
01-marec-2024
Aeronavtika - Recikliranje odpadnega titana in titanovih zlitin
Aerospace series - Recycling of titanium and titanium alloy scrap
Luft- und Raumfahrt - Wiederaufbereitung von Schrott aus Titan und Titanlegierungen
Série aérospatiale - Recyclage des chutes de titane et d'alliages de titane
Ta slovenski standard je istoveten z: prEN 2955
ICS:
13.030.50 Recikliranje Recycling
49.025.30 Titan Titanium
oSIST prEN 2955:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 2955:2024
oSIST prEN 2955:2024
DRAFT
EUROPEAN STANDARD
prEN 2955
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2024
ICS 49.025.30 Will supersede EN 2955:1993
English Version
Aerospace series - Recycling of titanium and titanium alloy
scrap
Série aérospatiale - Recyclage des chutes de titane et Luft- und Raumfahrt - Wiederaufbereitung von Schrott
d'alliages de titane aus Titan und Titanlegierungen
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, Türkiye 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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 2955:2024 E
worldwide for CEN national Members.

oSIST prEN 2955:2024
prEN 2955:2024 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Recycling . 5
4.1 General requirements . 5
4.2 Approval . 6
4.3 Procedure . 6
4.4 Technical requirements . 6
4.4.1 General. 6
4.4.2 Turnings . 7
Annex A (normative) Flow chart for scrap recycling . 13

oSIST prEN 2955:2024
prEN 2955:2024 (E)
European foreword
This document (prEN 2955:2024) 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 is currently submitted to the CEN Enquiry.
This document will supersede EN 2955:1993.
Major element of this revision is the authorization of recycling of material that have been used in flight.
oSIST prEN 2955:2024
prEN 2955:2024 (E)
1 Scope
This document specifies the general requirements for recycling, by vacuum remelting or cold hearth
melting, titanium and titanium alloy scrap used for the production of ingots.
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 2000, Aerospace series — Quality assurance — EN aerospace products — Approval of the quality
system of manufacturers
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
3.1
scrap processor
processor that classifies the scrap and guarantees conformity to the melter's requirements acting in
accordance with the aerospace purchaser’s requirements
Note 1 to entry: scrap processing may be carried out by an independent processor (scrap dealer), by the
melter's processing department or by the purchaser's processing department.
3.2
melter
company which manufactures titanium or titanium alloy ingots
3.3
purchaser
body which purchases the products from a manufacturer or a stockist in accordance with the
requirements of the user
Note 1 to entry: the purchaser may also be the user.
3.4
user
see EN 2000
3.5
melter's recovery department
department responsible for recovering the scrap produced by the melter and preparing it for treatment
by the scrap processor
oSIST prEN 2955:2024
prEN 2955:2024 (E)
3.6
purchaser's recovery department
department responsible for recovering the scrap produced by the purchaser and preparing it for
treatment by the scrap processor
3.7
scrap lot
scrap from the same alloy and same classification prepared by the same processor in accordance with
the same process schedule and processed at the same time
3.8
classification of scrap
scrap categories and sub-categories as defined by Table 1
3.9
traceable scrap
individual pieces of scrap, the history of which can be traced back to the original ingot
3.10
massive scrap
scrap with an individual mass specified by the melter requiring 100 % check
3.11
light scrap
scrap with an individual mass specified by the melter for sampling
3.12
non-contaminated scrap
scrap which is free from contamination caused by:
— brazing;
— electrolytic deposits;
— painting;
— coating;
— oxidation caused by heating;
— nitriding;
— machining: broken tools/blades/wheels;
— etc.
4 Recycling
4.1 General requirements
For flow chart for scrap recycling see Annex A, Figure A.1.
The scrap shall:
oSIST prEN 2955:2024
prE
...