BRITISH STANDARD AEROSPACE SERIES BS EN 2103 3 1992 Steel, nickel base and cobalt base alloy remelting stock and castings — Technical specification — Part 3 Pre production and production castings This[.]
Trang 1BRITISH STANDARD AEROSPACE SERIES BS EN
2103-3:1992
Steel, nickel base and
cobalt base alloy
remelting stock and
castings —
Technical
specification —
Part 3: Pre-production and production
castings
This European Standard EN 2103-3:1991 has the status of a
British Standard
Trang 2This British Standard was
published under the authority
of the Standards Board and
comes into effect on
31 January 1992
© BSI 12-1999
The following BSI references
relate to the work on this
standard:
Committee reference ACE/61
Draft for comment 88/77546 DC
ISBN 0 580 20386 7
Cooperating organizations
The European Committee for Standardization, under whose supervision this European Standard was prepared, comprises the national standards
organizations of the following countries
Austria Oesterreichisches Normungsinstitut Belgium Institut belge de normalisation Denmark Dansk Standardiseringsraad Finland Suomen Standardisoimisliito, r.y
France Association française de normalisation Germany Deutsches Institut für Normung e.V
Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland
Ireland National Standards Authority of Ireland Italy Ente Nazionale Italiano di Unificazione Luxembourg Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portuguès da Qualidade Spain Asociación Española de Normalización y Certificación Sweden Standardiseringskommissionen i Sverige
Switzerland Association suisse de normalisation United Kingdom British Standards Institution
Amendments issued since publication
Trang 3BS EN 2103-3:1992
Contents
Page
National appendix NA (informative) Inside back cover National appendix NB (informative) Inside back cover
Trang 4ii © BSI 12-1999
National foreword
This British Standard has been prepared under the direction of the Aerospace Standards Policy Committee and is the English language version of
EN 2103-3:1991 “Aerospace series — Steel, nickel base and cobalt base alloy
remelting stock — Technical specification — Part 3: Pre-production and production castings”, published by the European Committee for Standardization
(CEN)
EN 2103-3 was produced as a result of international discussion in which the UK took an active part
A British Standard does not purport to include all the necessary provisions of a contract Users of British Standards are responsible for their correct application
Compliance with a British Standard does not of itself confer immunity from legal obligations.
Summary of pages
This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 10, an inside back cover and a back cover
This standard has been updated (see copyright date) and may have had amendments incorporated This will be indicated in the amendment table on the inside front cover
Trang 5EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
EN 2103-3
October 1991
UDC: 669.14-4:669.24-4:669.25-4:629.7
Descriptors: Aircraft industry, castings, steels, nickel alloys, cobalt alloys, manufacturing, melting, defects, acceptability, tests,
marking
English version
Aerospace series Steel, nickel base and cobalt base alloy remelting
stock and castings — Technical specification — Part 3: Pre-production and production castings
Série aérospatiale
Produits pour refusion et pièces moulées en
acier et alliages base nickel et base cobalt —
Spécification technique —
Partie 3: Pièces types et pièces de série
Luft- und Raumfahrt Vormaterial und Gußstücke aus Stahl, Nickel- und Kobaltlegierungen — Technische Lieferbedingungen — Teil 3: Ausfallmuster und Seriengußstücke
This European Standard was approved by CEN on 28 June 1990 CEN
members are bound to comply with the requirements of 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 Central Secretariat 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
Central Secretariat has the same status as the official versions
CEN members are the national standards bodies of Austria, Belgium,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,
Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and
United Kingdom
CEN
European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung
Central Secretariat: rue de Stassart 36, B-1050 Brussels
© CEN 1991 Copyright reserved to all CEN members
Ref No EN 2103-3:1991 E
Trang 6© BSI 12-1999
2
Foreword
This European Standard has been prepared by the
European Association of Aerospace Manufacturers
(AECMA)
After inquiries and votes carried out in accordance
with the rules of this Association, this Standard has
successively received the approval of the National
Associations and the Official Services of the member
countries of AECMA, prior to its presentation to
CEN
According to the Common CEN/CENELEC Rules,
the following countries are bound to implement this
European Standard: Austria, Belgium, Denmark,
Finland, France, Greece, Iceland, Ireland, Italy,
Luxembourg, Netherlands, Norway, Portugal,
Spain, Sweden, Switzerland and United Kingdom
Contents
Page
1 Scope and field of application 3
3 Recommendation for casting development 3
5 Manufacture of production castings 4
6 Inspection and testing of
Table 1 — Radiographic acceptance standards for steel castings (except for heat resisting steel) Wall thickness u 25 mm 5 Table 2 — Radiographic acceptance
standards for heat resisting steel, nickel and cobalt alloy castings Wall thickness u 25 mm 6
Table 4 — Summary of requirements for production steel castings (except heat
Table 5 — Summary of requirements for production heat resisting steel, nickel and
Trang 7EN 2103-3:1991
1 Scope and field of application
The present standard specifies the particular
requirements for castings in steel, nickel base or
cobalt base alloys produced from material
complying with EN 2103-2
This standard shall be used in conjunction with
EN 2103-1
This standard also applies to pre-production
castings intended for the qualification of the method
of manufacture and inspection
2 References
EN 2002-1, Aerospace series — Test methods for
metallic materials — Part 1: Tensile testing at
EN 2002-2, Aerospace series — Test methods for
metallic materials — Part 2: Tensile testing at
EN 2002-5, Aerospace series — Test methods for
metallic materials — Part 5: Uninterrupted creep
EN 2002-7, Aerospace series — Test methods for
EN 2002-16, Aerospace series — Test methods for
metallic materials — Part 16: Dye penetrant
EN 2002-21, Aerospace series — Test methods for
metallic materials — Part 21: Radiographic testing
EN 2003-5, Aerospace series — Test methods for steel
EN 2003-11, Aerospace series — Test methods for
austenitic stainless steel — Part 11: Determination
of resistance to intergranular corrosion by the Huey
EN 2078, Aerospace series — Manufacturing
schedule — Inspection schedule and inspection
EN 2103-1, Aerospace series — Steel, nickel base and
cobalt base alloy remelting stock and castings —
Technical specification — Part 1: General
requirements
EN 2103-2, Aerospace series — Steel, nickel base and
cobalt base alloy remelting stock and castings —
Technical specification — Part 2: Remelting stock
EN 2857, Aerospace series — Test methods for
paramagnetic materials — Magnetic particle
3 Recommendation for casting development
It is strongly recommended that the technical representative of the manufacturer be given the opportunity to examine the casting drawing at the initial stages of design and to advise on the optimum design which will facilitate consistent production of acceptable castings
The dimensional tolerances of the castings shall be
as agreed between the purchaser and manufacturer and indicated on the drawing or the inspection schedule
4 Pre-production castings
4.1 General 4.1.1 The following requirements shall be specified
on the order, drawing and/or inspection schedule in addition to those specified in EN 2103-1:
— number of castings to be examined
— who shall perform the examination
— heat treatment condition
— type and frequency of inspection and testing necessary to evaluate and qualify the
manufacturing process (dimensions, mechanical and metallurgical properties, etc.)
4.1.2 The inspection and testing of pre-production
castings shall be carried out and recorded to allow the definition of the optimum techniques to be used for production castings
4.1.3 The inspection and tests carried out on
pre-production castings shall include those which will be carried out on production castings
4.2 Inspection report
In addition to the information required by EN 2078, the inspection and test report on the pre-production castings shall provide all technical information to allow evaluation of the quality of these parts, e.g., radiographs, results of dimensional measurements, etc
4.3 Acceptance of pre-production castings
When all inspection and test results relative to pre-production castings have been reported and accepted as satisfactory, the purchaser shall give his written agreement for series production
The inspection schedule and if required, the manufacturing schedule shall be formally agreed between the manufacturer and purchaser
1) Published as AECMA pre-standard at the date of publication of this standard.
2) In preparation at the date of publication of this standard.
3) Published as AECMA standard at the date of publication of this standard.
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5 Manufacture of production castings
5.1 At the start of production (particularly at the
start of series production), the manufacturing
schedule may be completed to allow the
manufacturer to guarantee the reproducibility of
the product with more certainty
All information, no matter how minor, shall be
recorded in the manufacturing schedule
5.2 When a manufacturing schedule has been
agreed, no change in the manufacturing method
shall be made without the written approval of the
purchaser
When such changes are necessary in the case of, for
example:
a) alterations of pattern, mould material or
position of runners and risers,
b) alterations of the casting process,
c) alterations of the heat treatment process,
the purchaser shall decide if new pre-production
castings shall be manufactured and tested
The manufacturing schedule and the inspection
schedule shall be modified accordingly
5.3 Any change of the casting requiring a revised
drawing may require at the purchaser’s or
manufacturer’s request:
— the manufacture of new pre-production
castings, or
— modification of the manufacturing schedule
and/or the inspection schedule
5.4 Manufacturing schedules and inspection
schedules, which are modified during production
shall be subjected to the same approval process as
the original documents
5.5 Manufacture
Castings shall be poured from a melt, consisting of:
1) remelting stock complying with the
requirements of EN 2103-2 plus, if necessary,
pure metals and added elements, or
2) remelting stock complying with the
requirements of EN 2103-2 plus a defined and
constant percentage of approved scrap, pure
metals and added elements, or
3) remelting stock, approved scrap, pure metals
and added elements Their proportion per melt is
at the option of the manufacturer
Unless otherwise specified on the order or
manufacturing schedule, the following
manufacturing method shall be used:
— for castings in steel: method 2)
— for castings in nickel or cobalt base
alloys: method 1)
5.6 Correction of distortion shall be carried out only
by agreement between the manufacturer and the purchaser The manufacturer shall be responsible for specifying the conditions under which such correction is to be carried out, subject to any provisions made by the purchaser The method agreed shall be incorporated in the manufacturing schedule
If after correction of distortion a further heat treatment is required, the castings shall be re-tested
in accordance with the requirements of the material standard Finally, the castings shall be resubmitted
to penetrant or magnetic flaw detection
(see clause 6.3).
6 Inspection and testing of production castings
Inspection and testing shall be carried out on production castings under the same conditions as applied to pre-production castings
6.1 Dimensions and tolerances
The dimensions specially indicated by the purchaser shall be checked on every casting
For other dimensions the frequency of examination adopted by the manufacturer shall be sufficient to permit him to certify compliance with the
requirements
6.2 Chemical composition
In addition to EN 2103-1, the manufacturer shall perform sufficient analyses throughout a prolonged casting cycle to ensure that the composition of all the castings will conform to the requirements of the material standard
For small multiple melts produced in accordance
with method 1) and 2) (see 5.5) the frequency of
analysis may be reduced by agreement with the purchaser and stated in the inspection schedule
6.3 External defects 6.3.1 Castings shall be suitably fettled, dressed,
cleaned and if appropriate, etched and passivated,
to enable inspection to be carried out in a satisfactory manner
6.3.2 Each casting shall be examined for surface
defects by visual inspection and penetrant flaw detection in accordance with EN 2002-16 or magnetic particle examination in accordance with EN 2857 after all specified heat treatment and pressure tests are completed
Castings shall be free from cracks and cracklike indications If appropriate, the acceptance level for other indications of possible defect shall be detailed
on the inspection schedule
Trang 9EN 2103-3:1991
6.3.3 Surface defects may be removed by local
dressing provided the castings are subsequently
within the dimensional tolerances Dressing shall
be followed by flaw detection in accordance with
EN 2002-16
6.4 Internal defects
Castings shall be radiographically examined in
accordance with EN 2002-21 Unless otherwise
specified on the drawing or inspection schedule, the
technique and frequency to be used, shall be as
indicated in Table 4 or Table 5, quality level 2
The inspection schedule shall include a sheet
detailing the requirements for radiographic
examination
6.4.1 Acceptance criteria for radiographic
examination of steel castings, except heat resisting
steel, with wall thicknesses equal to or less
than 25 mm are given in Table 1 The standard of
acceptance shall conform to grade B, unless
alternative general or localised levels are agreed
and defined on the drawing or in the inspection
schedule
Any indication of the diffraction mottling
phenomenon is acceptable provided it is confirmed
to the satisfaction of the radiologist, either by
additional radiographs at different angles, or by the
cut-up of representative castings
6.4.2 The acceptance criteria for steel castings,
except for heat resisting steel, with wall thicknesses greater than 25 mm shall be defined by reference
to EN 2002-21 The criteria shall be agreed between the manufacturer and the purchaser and stated on the order, drawing or inspection schedule
6.4.3 Acceptance criteria for radiographic
examination of heat resisting steel, nickel and cobalt alloy castings with wall thickness equal to or less than 25 mm are given in Table 2 The standard
of acceptance shall conform to grade B, unless alternative general or localised levels are agreed and defined on the drawing or in the inspection schedule
Any indication of the diffraction mottling phenomenon is acceptable provided it is confirmed
to the satisfaction of the radiologist, either by additional radiographs at different angles, or by the cut-up of representative castings
6.4.4 Acceptance criteria for heat resisting steel,
nickel base and cobalt base alloy castings with wall thicknesses greater than 25 mm shall be defined by reference to EN 2002-21 The criteria shall be agreed between the manufacturer and the purchaser and stated on the order, drawing or inspection schedule
Table 1 — Radiographic acceptance standards for steel castings (except for heat resisting
steel) Wall thickness u 25 mm Defect Plate designation(EN 2002-21)
Acceptance Standard Reference plate n°
Grade A Grade B Grade C
9,5 19
mm (1/8¾)
mm (3/8¾)
mm (3/4¾)
2 2 1
3 3 3
5 5 5
Shrinkage
19
mm (1/8¾)
mm (3/8¾)
mm (3/4¾)
1 1 1
2 2 2
5 3 4 Shrinkage
19
mm (1/8¾)
mm (3/8¾)
mm (3/4¾)
1 1 1
3 3 3
4 4 4
Foreign material
19
mm (1/8¾)
mm (3/8¾)
mm (3/4¾)
2 2 2
3 3 3
5 5 5
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Table 2 — Radiographic acceptance standards for heat resisting steel, nickel and cobalt alloy
castings Wall thickness u 25 mm
Table 3
6.4.5 Unless otherwise agreed, all radiographs shall
be forwarded to the purchaser They shall be
suitably identified to the castings they represent
6.5 Batch uniformity
6.5.1 Material conformity
Castings shall be checked to ensure that they have
been manufactured from the specified material
Unless otherwise specified on the order or in the
manufacturing schedule, the method used shall be
at the option of the manufacturer
6.5.2 Heat treatment uniformity
Where hardness values are indicated on the
material standard, heat treatment uniformity shall
be determined by hardness testing
Hardness shall be determined in accordance
with EN 2002-7 and the results shall comply with
the requirements of the material standard
Tests on products comprising a batch and on test samples representing a batch shall be made by the same method and under the same conditions of loading
Hardness testing shall be effected at the locations selected by the manufacturer unless otherwise specified on the drawing or inspection schedule The number of castings to be tested for each batch shall be as indicated in Table 3
Where no hardness value is indicated in the material standard, heat treatment uniformity shall
be determined by a method to be agreed between manufacturer and purchaser
Defect Plate designation(EN 2002-21)
Acceptance Standard Reference plate n°
Grade A Grade B Grade C
9,5 19
mm (1/8¾)
mm (3/8¾)
mm (3/4¾)
1 1 1
3 3 3
4 4 4
Shrinkage
19
mm (1/8¾)
mm (3/8¾)
mm (3/4¾)
1 1 1
2 1 1
4 3 3 Shrinkage
19
mm (1/8¾)
mm (3/8¾)
mm (3/4¾)
1 1 1
2 2 2
3 3 3
Foreign material
19
mm (1/8¾)
mm (3/8¾)
mm (3/4¾)
1 1 1
2 2 2
4 4 4
Type of casting Number of casting per batch
(N)
Heat treatment Hardened and tempered,
precipitation hardened Non heat treated, annealed, normalized
Precision casting
20 < N u 40
2
N N