EN 4800-006:2010

SLOVENSKI STANDARD
01-januar-2012
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Aerospace series - Titanium and titanium alloys - Technical specification - Part 006: Pre-
production and production forgings
Luft- und Raumfahrt - Titan und Titanlegierungen Kneterzeugnisse - Technische
Lieferbedingungen - Teil 006: Ausfallmuster- und Serienschmiedestücke
Série aérospatiale - Titane et alliages de titane - Spécification technique - Partie 006:
Pièces types et pièces de série, forgées et matricées
Ta slovenski standard je istoveten z: EN 4800-006:2010
ICS:
49.025.30 Titan Titanium
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 4800-006
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2010
ICS 49.025.30
English Version
Aerospace series - Titanium and titanium alloys - Technical
specification - Part 006: Pre-production and production forgings
Série aérospatiale - Titane et alliages de titane - Luft- und Raumfahrt - Titan und Titanlegierungen
Spécification technique - Partie 006: Pièces types et pièces Kneterzeugnisse - Technische Lieferbedingungen - Teil
de série, forgées et matricées 006: Ausfallmuster- und Serienschmiedestücke
This European Standard was approved by CEN on 20 February 2010.

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, Croatia, 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
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4800-006:2010: E
worldwide for CEN national Members.

Contents Page
Foreword .3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .6
4 Wording of order .7
5 Health and safety .7
6 Technical requirements .7
Foreword
This document (EN 4800-006:2010) 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 Standard has
received the approval of the National Associations and the Official Services of the member countries of ASD,
prior to its presentation to CEN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by May 2011, and conflicting national standards shall be withdrawn at the
latest by May 2011.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: 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, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Introduction
This standard is part of the series of EN metallic material standards for aerospace applications. The general
organization of this series is described in EN 4258.
1 Scope
This standard defines the requirements for the ordering, manufacture, testing, inspection and delivery of
titanium and titanium alloy pre-production and production forgings. It shall be applied when referred to and in
conjunction with the EN material standard unless otherwise specified on the drawing, order or inspection
schedule.
2 Normative references
The following referenced documents are indispensable for the application 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 2002-001, Aerospace series — Metallic materials — Test methods — Part 001: Tensile testing at ambient

temperature
EN 2002-002, Aerospace series — Metallic materials — Test methods — Part 002: Tensile testing at elevated
temperature
EN 2002-005, Aerospace series — Test methods for metallic materials — Part 005: Uninterrupted creep and
stress-rupture testing
EN 2002-16, Aerospace series — Metallic materials — Test methods — Part 16: Non-destructive testing —
Penetrant testing
EN 2003-009, Aerospace series — Test methods — Titanium and titanium alloys — Part 009: Determination
of surface contamination
EN 2032-1, Aerospace series — Metallic materials — Part 1: Conventional designation
EN 2032-2, Aerospace series — Metallic materials — Part 2: Coding of metallurgical condition in delivery
condition
EN 2078, Aerospace series — Metallic materials — Manufacturing schedule, inspection schedule, inspection
and test report — Definition, general principles, preparation and approval
EN 2954-002, Aerospace series — Macrostructure of titanium and titanium alloy wrought products —
Part 002: Macrostructure of bar, section, forging stock and forgings
EN 3114-001, Aerospace series — Test method — Microstructure of (α + β) titanium alloy wrought products —
Part 001: General requirements
EN 3114-002, Aerospace series — Test method — Microstructure of (α + β) titanium alloy wrought products —
Part 002: Microstructure of bars, sections, forging stock and forgings
EN 3683, Aerospace series — Test methods — Titanium alloy wrought products — Determination of primary
α content — Point count method and line intercept method
EN 3874, Aerospace series — Test methods for metallic materials — Constant amplitude force-controlled low
1)
cycle fatigue testing
1) Published as ASD-STAN Prestandard at the date of publication of this standard.
EN 3976, Aerospace series — Titanium and titanium alloys — Test method — Chemical analysis for the
determination of hydrogen content
EN 3987, Aerospace series — Test methods for metallic materials — Constant amplitude force-controlled high
cycle fatigue testing
EN 3988, Aerospace series — Test methods for metallic materials — Constant amplitude strain-controlled low
2)
cycle fatigue testing
EN 4050-1, Aerospace series — Test method for metallic materials — Ultrasonic inspection of bars, plates,
2)
forging stock and forgings — Part 1: General requirements
EN 4050-4, Aerospace series — Test method for metallic materials — Ultrasonic inspection of bars, plates,
2)
forging stock and forgings — Part 4: Acceptance criteria
EN 4258, Aerospace series — Metallic materials — General organization of standardization — Links between
types of EN standards and their use
2)
EN 4259, Aerospace series — Metallic materials — Definition of general terms
EN 4800-005, Aerospace series — Titanium and titanium alloys — Technical specification — Par 005: Forging
stock
EN 9100, Quality Management Systems — Requirements for Aviation, Space and Defense Organizations
EN 9133, Aerospace series — Quality management systems — Qualification procedure for aerospace
standard parts
EN ISO 643, Steels — Micrographic determination of the apparent grain size (ISO 643:2003)
EN ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
(ISO 6892-1:2009)
prEN ISO 6892-2, Metallic materials — Tensile testing — Part 2: Method of test at elevated temperature
(ISO/DIS 6892-2:2009)
TR 2410, Aerospace series — Metallic materials — Relationship between dimensional standards and material
3)
standards
4)
AMS 2750, Pyrometry
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 4259 apply.

2) Published as ASD-STAN Prestandard at the date of publication of this standard.
3) Published as ASD-STAN Technical Report at the date of publication of this standard.
4) Published by: American Society for Testing and Materials (ASTM), 100 Barr Harbor Drive, PO Box C700, West
Conshohocken, PA, 19428-2959 USA.
4 Wording of order
The order shall clearly indicate:
 quantities to be supplied;
 dates of delivery;
 material standard number;
 part number;
 delivery condition and metallurgical code of products;
 dimensions and tolerances or reference to an appropriate dimensional standard;
 product designation, when required;
 forwarding address;
 nature and type of packing, if required;
 definition and frequency of any special tests and their retest procedures, if required.
5 Health and safety
Products in the delivery condition shall fulfil the health and safety laws of the area of the country when and
where it is to be delivered.
A product safety data sheet shall be available.
6 Technical requirements
6.1 General
The product shall satisfy the requirements of the order, drawing inspection schedule or material standard: see
Table 1, line 5.
The order, drawing or inspection schedule shall specify the tests to be performed upon:
a) pre-forgings for qualification and/or requalification;
b) serial production forgings for process control testing (Procedure X: see 6.5); and
c) batch release when cut-up testing or forgings is required.
Unless otherwise specified on the order, drawing or inspection schedule, acceptance criteria for the tests are
stated in the material standard, the requirements for each line of which are detailed in Tables 2 and 3 of this
technical specification.
Table 2 related to lines 1 to 29 (inclusive) of the material standard and Table 3 relates to lines 30 onwards in
which the sub-line format is also used. If a particular test is needed but not shown in a specific line in Tables 2
and 3, the requirement shall be specified on the order, drawing, inspection schedule or material standard.
6.2 Qualification requirements
See line 100 in Table 3 of this technical specification.
Qualification shall normally comprise assessment of pre-production forgings. See Table 2, No. 4.2.
6.3 Re-qualification requirements
Re-qualification of serial production forgings may be required, at the purchaser’s discretion, in the following
cases:
 modification of the drawing;
 use of forging stock from a different source;
 modifications to the forging stock form and/or manufacturer route;
 modifications to an existing die;
 use of a new (replacement) die;
 modifications to the forging manufacturing route;
 use of a new forging manufacturer;
 when a significant time interval (usually several years) had elapsed between forging campaigns for a
specific part number;
 when required by the purchaser for any other reason.
Re-qualification testing requirements, especially location of test pieces, shall be identical to those used for the
initial qualification of the pre-production forgings unless otherwise specified on the order, drawing or
inspection schedule.
6.4 Release requirements
Release testing shall be the responsibility of the manufacturer. The sampling procedure for release testing
shall be one of the following, as specified on the order, drawing or inspection schedule. Where no procedure
is specified, procedure A shall be used.
 Procedure A: Separate forged test samples shall be produced from the same batch of forging stock as
that used to make the serial production forgings. Procedure A may be used alone unless denoted AX on
the drawing, order or inspection schedule in which case it shall be applied only in conjunction with
procedure X (see 6.5).
 Procedure B: Separate forged heat treatment control test samples shall be prepared which conform to the
same material standard as the production forgings, but may originate from a different batch of forging
stock. Procedure B shall only be used when full heat treatment of the serial production forgings is carried
out by the manufacturer and only in conjunction with procedure X (see 6.5).
 Procedure C: Integral test samples shall be removed from each forgings. The order, drawing of inspection
schedule shall specify how many test samples shall be tested per batch. Procedure C may be used alone
unless denoted CX on the drawing, order or inspection schedule in which case it shall be applied only in
conjunction with procedure X (see 6.5).
 Procedure D: Test samples shall be machined from forging(s) selected from each production batch and at
locations specified on the order, drawing or inspection schedule.
The purchaser reserves the right to perform any of the inspections and/or tests required by the material
standard, drawing, order or inspection schedule.
When required, the manufacturer shall inform the purchaser of the planned dates for extraction of samples
and release testing in order that these operations may be witnessed.
6.5 Process control testing (Procedure X)
Procedure X is a process control procedure consisting of periodic “cut-up” testing to ensure that the serial
production forgings continues to conform to the specified requirements.
If procedure X is invoked by the order, drawing or inspection/manufacturing schedule and/or if procedures B,
AX or CX are used for release tests (see 6.4), forgings shall be selected from series production at the
frequency stated therein. It is recommended that the maximum number of forgings manufactured between
repeat “cut-up” testing conforming to procedure X shall be as stated in the following Table 1:
Table 1
Mass of forging Number of forgings
kg
≤ 1 ≤ 2 000
1 < mass ≤ 2 ≤ 1 000
2 < mass ≤ 5 ≤ 400
5 < mass ≤ 25 ≤ 200
As stated on the order, drawing, inspection schedule
> 25
The testing requirements, including the location, type and size of test pieces shall be identical to those used
for qualification of the pre-production.
6.6 Retests
Retests shall be required if the specified acceptance criteria are not fully met during qualification testing of
pre-production forgings, process control testing (procedure X) or batch release testing.
If the test product or test piece preparation is faulty, testing shall be re-applied at the original frequency after
rectification of the original cause of failure. At least one of the retests shall be from forgings from which the
unsatisfactory result was obtained (unless already rejected by the manufacturer after suitable identification of
the cause of failure). If insufficient material remains, the purchaser shall advise as to how to proceed.
If all retest results fulfil the specified acceptance criteria, the pre-production forging qualification/process
control test (procedure X) shall be deemed satisfactory or the batch shall be accepted, as appropriate.
If one or more retest results fail to fulfil the specified acceptance criteria, the following actions shall be taken:
a) For qualification testing of pre-production forgings, advice shall be sought from the purchaser as to
whether the retest results are acceptable for that part of the forging. If so, this shall be denoted by a note
on the drawing, together with values which are acceptable for that location. Alternatively, if it is essential
that the specified acceptance criteria are achieved at all locations, the purchaser may request
modifications to be made to the manufacturer route.
b) For process control testing (procedure X), the tests shall be repeated on a second forging taken as close
as possible to the above in the production sequence and/or and extensive review shall be made of the
manufacturing records of forgings made since the previous control tests. Serial production of the forging
in question (and others if appropriate/deemed necessary) shall not continue until the cause of the
unsatisfactory values has been ascertained and rectified.
c) For batch release testing, the batch shall be either:
1) rejected; or
2) partially of fully re-heat treated if it is believed that re-heat treatment can rectify the cause of the
failure and then test as a completely new batch from which the conforming products shall be
accepted. The re-heat treatment shall be stated on the test and inspection report. No products or test
sample shall be re-heat treated more than once.
6.7 Special tests
Special tests and/or inspections may be required by the purchaser. In such cases, the nature of the test,
method, frequency and technical requirements shall be specified on the order, drawing or inspection schedule
and shall be mutually agreed by the manufacturer and purchaser.
6.8 Capability clause
The capability clause normally applies only to forgings of suitable size and configuration during process control
testing (procedure X) and/or batch release testing when invoking procedure D. The number of batches after
which sufficient statistical evidence is deemed to justify cessation of testing for a particular property (or
reduced frequency of testing) shall be mutually agreed between the manufacturer and purchaser. However,
this is no way reduces, the obligations of the manufacturer to fulfil the requirements. If subsequent testing
indicates that the product does not comply with the requirements, the batch shall be rejected.
6.9 Statistical process control
Reduction in the extent of release testing, other than that defined in 6.8 above may be negotiated with the
purchaser on the basis of appropriate statistical process control and/or statistical data.
6.10 Inspection and test report
The manufacturer shall furnish, with each delivery, a report conforming to the requirements of EN 2078 stating
the following:
 manufacturer’s name and address;
 order number;
 drawing and/or part number;
 material standard number;
 delivery condition and metallurgical code of the product;
 quantity of forgings;
 cast and batch number;
 batch and/or test samples heat treatment, if appropriate;
 results of all tests, retests and chemical analysis;
 inspector’s endorsement.
Table 2 — Technical requirements for lines 1 to 29, where appropriate
Frequency of testing
Material standard line
reference
Requirements
Qualification Release
No Title
1 Material designation See EN 2032-1. − −
2 Chemical composition The test samples used for chemical analysis shall be representative of the product and shall be taken from 2 per cast 2 per cast
location corresponding to top and bottom of each ingot produced after the final melting stage. The method
of chemical analysis shall be at the discretion of the manufacturer unless otherwise stated in the material
standard or order. In cases of dispute, the method of chemical analysis shall be agreed between the
manufacturer and purchaser preferably using existing chemical analysis standards. The measured
chemical composition shall be stated on the certificate of conformance.
Specific requirements for hydrogen content: 1 per batch 1 per batch
The hydrogen content shall be determined on each batch in the delivery condition in accordance with
EN 3976.
3 Method of melting Method of melting consists of multiple melt using combination of non-consumable electrode, consumable − −
electrode and cold hearth (electron beam or plasma arc) melting practices.
The technical requirements are defined in the technical specification for forging stock (EN 4800-005).
4.1 Form Pre-production and production forgings – –
4.2 Method of production Pre-production forgings: – –
Prior to commencing series production of a particular design, pre-production forgings shall be produced in
order to qualify the method of manufacture and equipment configuration and to demonstrate that the
requirements of the purchaser can be met.
The following requirements shall be specified on the order, drawing and/or inspection schedule:
 number of pre-production forgings to be produced for evaluation/qualification;
 heat treatment condition of the pre-production forgings including any requirements for machining
prior to heat treatment;
 any areas on the forgings which are critical and for which special finishing prior to inspection is
required together with the standard of such finish;
continued
Table 2 — Technical requirements for lines 1 to 29, where appropriate (continued)
Frequency of testing
Material standard line
reference
Requirements
Qualification Release
No Title
 type, number and locations of tests/inspections necessary to evaluate and qualify the method of
4.2 Method of production – –
manufacture such as dimensions, mechanical properties, grain flow, microstructure,
(concluded)
macrostructure, etc.;
 whether an agreed method of manufacture is required.
The pre-forgings shall be made from forging stock complying with the relevant EN material standard.
Evaluation/qualification of the pre-production forgings shall be carried out to include those inspections and
tests which will be performed on production forgings. All manufacturing parameters as well as test and
inspection details and results shall be recorded and compiled into an inspection and testing report to allow
definition of the optimum techniques to be used for production forgings including, where appropriat
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