SIST EN 4700-002:2021

SLOVENSKI STANDARD
SIST EN 4700-002:2021
01-julij-2021
Nadomešča:
SIST EN 4700-002:2016
Aeronavtika - Jeklo in zlitine, odporne proti vročini - Gneteni izdelki - Tehnična
specifikacija - 002. del: Palice in profili
Aerospace series - Steel and heat resisting alloys - Wrought products - Technical
specification - Part 002: Bar and section
Luft- und Raumfahrt - Stahl und hochwarmfeste Legierungen - Umgeformte Erzeugnisse
- Technische Lieferbedingungen - Teil 002: Stangen und Profile
Série aérospatiale - Aciers et alliages résistant à chaud - Produits corroyés -
Spécification technique - Partie 002: Barres et profilés
Ta slovenski standard je istoveten z: EN 4700-002:2021
ICS:
49.025.10 Jekla Steels
77.140.60 Jeklene palice in drogovi Steel bars and rods
SIST EN 4700-002:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 4700-002:2021


EN 4700-002
EUROPEAN STANDARD

NORME EUROPÉENNE

May 2021
EUROPÄISCHE NORM
ICS 49.025.10 Supersedes EN 4700-002:2016
English Version

Aerospace series - Steel and heat resisting alloys -
Wrought products - Technical specification - Part 002:
Bars and sections
Série aérospatiale - Acier et alliages résistant à chaud - Luft- und Raumfahrt - Stahl und hochwarmfeste
Produits corroyés - Spécification technique - Partie Legierungen - Umgeformte Erzeugnisse - Technische
002: Barres et profilés Lieferbedingungen - Teil 002: Stangen und Profile
This European Standard was approved by CEN on 24 February 2020.

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, Turkey 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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4700-002:2021 E
worldwide for CEN national Members.

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Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 7
4 Wording of order . 7
5 Health and safety . 8
6 Technical requirements . 8
7 Requirements . 10
Bibliography . 34

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EN 4700-002:2021
European foreword
This document (EN 4700-002:2021) 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 November 2021, and conflicting national standards shall be
withdrawn at the latest by November 2021.
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 4700-002:2017.
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, Turkey and the United
Kingdom.

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Introduction
This document is part of the series of EN metallic material standards for aerospace applications.
The general organization of this series is described in EN 4258.

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1 Scope
This document defines the requirements for the ordering, manufacture, testing, inspection and delivery
of steel and heat resisting alloy bars and sections. It is presupposed to 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 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 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 2032-001, Aerospace series — Metallic materials — Part 001: 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 2950, Aerospace series — Test method — Wrought heat resisting alloys — Semi-finished products and
parts — Conditions for macrographic and micrographic examination — Atlas of structures and defects
EN 2951, Aerospace series — Metallic materials — Micrographic determination of content of non-metallic
inclusions
EN 3874, Aerospace series — Test methods for metallic materials — Constant amplitude force-controlled
1)
low cycle fatigue testing
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
1)
low cycle fatigue testing

1) Published as ASD-STAN Standard at the date of publication of this document by AeroSpace and Defence
industries Association of Europe — Standardization (ASD-STAN), http://www.asd-stan.org/
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EN 4050-1, Aerospace series — Test method for metallic materials — Ultrasonic inspection of bars, plates,
forging stock and forgings — Part 1: General requirements
EN 4050-4, Aerospace series — Test method for metallic materials — Ultrasonic inspection of bars, plates,
forging stock and forgings — Part 4: Acceptance criteria
1)
EN 4259, Aerospace series — Metallic materials — Definition of general terms
EN 10027-1, Designation systems for steels — Part 1: Steel names
EN 10079, Definition of steel products
EN ISO 148-1, Metallic materials — Charpy pendulum impact test — Part 1: Test method
EN ISO 642, Steel — Hardenability test by end quenching (Jominy test)
EN ISO 643, Steels — Micrographic determination of the apparent grain size
EN ISO 3651-1, Determination of resistance to intergranular corrosion of stainless steels —
Part 1: Austenitic and ferritic-austenitic (duplex) stainless steels — Corrosion test in nitric acid medium by
measurement of loss in mass (Huey test)
EN ISO 3651-2, Determination of resistance to intergranular corrosion of stainless steels — Part 2: Ferritic,
austenitic and ferritic-austenitic (duplex) stainless steels — Corrosion test in media containing sulfuric acid
EN ISO 3887, Steels — Determination of depth of decarburization
EN ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method
EN ISO 6507-1, Metallic materials — Vickers hardness test — Part 1: Test method
EN ISO 6508-1, Metallic materials — Rockwell hardness test — Part 1: Test method
EN ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
EN ISO 6892-2, Metallic materials — Tensile testing — Part 2: Method of test at elevated temperature
EN ISO 15549, Non-destructive testing — Eddy current testing — General principles
ISO 4967, Steel — Determination of content of non-metallic inclusions — Micrographic method using
standard diagrams
2)
AMS 2315, Determination of Delta Ferrite Content
2)
AMS 2750, Pyrometry
ASTM A604, Standard Practice for Macroetch Testing of Consumable Electrode Remelted Steel Bars and
3)
Billets

2)
Published by SAE international (US) Society of Automotive Engineers, http://www.sae.org/
3)
Published by ASTM international (US) American Society for Testing and Materials, http://www.astm.org/
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3)
ASTM E45, Standard Test Methods for Determining the Inclusion Content of Steel
3)
ASTM E340, Standard Practice for Macroetching Metals and Alloys
3)
ASTM E381, Standard Method of Macroetch Testing Steel Bars, Billets, Blooms and Forgings
ASTM E399, Standard Test Method for Linear-Elastic Plane-Strain Fracture Toughness KIc of Metallic
3)
Materials
3)
ASTM E407, Standard Practice for Microetching Metals and Alloys
3)
ASTM E1444, Standard Practice for Magnetic Particle Testing
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 4259 apply.
For definitions specific to steel, see EN 10079.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• ISO Online browsing platform: available at http://www.iso.org/obp
• IEC Electropedia: available at http://www.electropedia.org/
3.1
term
• for the general case, see EN 4259;
• for heat treatment using a continuous furnace, a continuous run of less than or equal to eight h may
be considered as the same heat treatment charge.
4 Wording of order
The order shall clearly indicate:
a) quantities to be supplied;
b) dates of delivery;
c) material standard number;
d) delivery condition and metallurgical code of products;
e) dimensions and tolerances or reference to an appropriate dimensional standard;
f) product designation, when required;
g) forwarding address;
h) nature and type of packing, if required;
i) surface protection, if appropriate;
j) definition and frequency of any special tests and their retest procedures, if required.
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5 Health and safety
The product in the delivery condition shall fulfil the current health and safety laws of the area of the
country where it is to be delivered.
A product safety data sheet shall be available.
6 Technical requirements
6.1 General
The product shall be manufactured in accordance with the requirements of the relevant material
standard and the applicable requirements of this specification. A manufacturing schedule shall be
established and applied in accordance with EN 2078.
Product shall satisfy the requirements of the material standard and/or order and shall be free from
irregularities prejudicial to the subsequent manufacture or use of this product.
Notwithstanding previous acceptance complying with this material standard, any product that is found,
at a later stage, to contain such imperfection shall be rejected.
Unless otherwise specified, the requirements in Tables 1 and 2 shall apply in conjunction with those of
the relevant material standard. Table 1 relates to lines 1 to 29 (inclusive) of the material standard and
Table 2 relates to lines 30 onwards in which the sub-line format is also used. Lines 2 to 98 may also be
opened in line 100 if the material standard details specific qualification requirements. If a specific line
number is not shown in Tables 1 and 2, the requirement is stated in the material standard and/or order.
6.2 Qualification requirements
Qualification requirements when invoked by the material standard and/or order are detailed in Tables 1
and 2. The number of batches and casts shall be agreed between the manufacturer and the customer.
6.3 Release requirements
6.3.1 Release tests
Release testing shall be the responsibility of the manufacturer.
The customer reserves the right to perform any of the inspections and/or tests required by the material
standard and/or order.
The test samples shall be representative of the product.
When required by the order, the manufacturer shall inform the customer of the planned dates for
extraction of samples and release testing in order that these operations may be witnessed.
Table 1 and Table 2 detail the requirements for each line of the material standard. Unless otherwise
specifically requested by the customer, a particular inspection and/or test for release shall be carried out
if corresponding acceptance criteria and/or values are stated in the applicable material standard but see
also in 6.3.5.

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6.3.2 Retests
If any requirement is not met, retests shall be carried out following an agreement between manufacturer
and customer. Products shall be:
a) rejected; or
b) 100 % retested and the conforming products accepted; or
c) partially or fully re-heat treated if heat treatment can rectify the cause of the failure and retested. For
condition of use material the number if re-heat treatments shall not exceed the number specified in
Table 1 (line 7). The reheat treatment shall be stated on the release test certificate.
6.3.3 Rejection
Any failure to meet the requirements of the material standard shall be cause for rejection.
6.3.4 Special tests
Special tests may be required by the customer. In such cases, the nature of the test, method, frequency
and technical requirements shall be specified on the order or inspection schedule and shall be mutually
agreed by the manufacturer and the customer.
6.3.5 Capability clause
Where the capability clause is invoked and where sufficient statistical evidence exists, the test need not
be carried out (unless specifically requested by the customer).
However, this in 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.
If sufficient statistical evidence does not exist, the test shall be carried out at a frequency agreed between
the manufacturer and customer.
6.3.6 Statistical process control
Reduction in the extent of release testing, other than that defined in 6.3.5 above, may be negotiated with
the customer on the basis of appropriate statistical process control and/or statistical data.
6.3.7 Inspection and test report
The manufacturer shall furnish, with each delivery, a report conforming to the requirements of EN 2078
stating the following:
a) manufacturer's name and address and, if appropriate, identification of the plant;
b) order number;
c) material standard number;
d) method of melting;
e) delivery condition and metallurgical code of the product;
f) quantity and dimensions;
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g) manufacturing and inspection schedule reference if required by the customer;
h) cast and batch number;
i) all heat treatment, including re-heat treatment and, where appropriate, straightening and stress
relieving parameters, applied to the batch;
j) test samples heat treatment;
k) results of the tests and any retests if required by the customer.
6.4 Traceability
Each product shall be traceable to the cast, production batch and/or heat treatment batch at all stages of
manufacture, testing and delivery.
7 Requirements
See Table 1 and Table 2.
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Table 1 — Technical requirements for lines 1 to 29, where appropriate (1 of 11)
Material standard line Frequency of testing
reference
Requirements
Qualification Release
No. Title
1 Material designation EN 2032-001 and EN 10027-1 if applicable.
− −
2 Chemical composition The chemical composition of the alloy shall comply with requirements of the material standard. a) 1 per cast in the a) 1 per cast in the
case of air case of air
The samples taken for analysis shall be representative of the melt.
melted or melted or
The method of analysis shall be at the option of the manufacturer, but in cases of dispute, the reference method
vacuum vacuum
set out in the relevant EN or ISO standard shall be used. If no EN or ISO standard exists, a fundamental and
induction melted induction melted
agreed method of chemical analysis calibrated against accepted reference standards shall be used.
product product
In the case of remelted material, samples shall be taken from positions and at frequencies as described on the
b) 2 per VAR or ESR
b) 1 per VAR or
right side of this table.
ingot
ESR ingot
An analysis shall be made of each sample and certificates of analysis shall be supplied to the customer. The
representing top
elements to be determined shall be as required by the material specification or as agreed between the
and bottom
manufacturer and the customer.
positions
Elements not quoted in the material standard shall not be intentionally added to the alloy without the
agreement of the customer, except for the purpose of finishing the heat (e.g. addition of deoxidizing);
reasonable precautions shall be taken to prevent their inclusion during manufacture. The customer, in
agreement with the manufacturer, may set a limit to the amount of one or more such elements and may require
the amount of such elements to be stated in the certificate of analysis.
The specified ranges of chemical composition are based on cast analyses. Any subsequent analytical checks
shall take into consideration the heterogeneity normal to the alloy.
Additionally for remelted products, the samples shall be representative for the remelted ingot, taking into
account any macro segregation.

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Table 1 — Technical requirements for lines 1 to 29, where appropriate (2 of 11)
Material standard line Frequency of testing
reference
Requirements
Qualification Release
No. Title
3 Method of melting 1 General
− −
The alloy shall be made by the process required by the material standard, unless otherwise agreed between
the manufacturer and customer. If the specification permits alternative processes, the manufacturer shall
decide which of them shall be used unless the customer states a particular preference on his order. In all
instances, the process by which the alloy was made shall be indicated on the release note.
When materials standards require “Air melted”, chemical composition, cleanliness, internal imperfection, …
requirements may impose to add refining operation process such as AOD, VOD or equivalent process.
In this case, the same process used for material qualification should be used for material delivery.
2 Consumable electrode remelted material
The manufacturer shall ensure that there is no contamination by foreign materials that may affect the
properties and the homogeneity of the final product.
The manufacturer shall establish a procedure for melting and remelting meeting the requirements as described
above.
4.1 Form Bars and sections − −
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Table 1 — Technical requirements for lines 1 to 29, where appropriate (3 of 11)
Material standard line Frequency of testing
reference
Requirements
Qualification Release
No. Title
4.2 Method of production Mechanical hot working:
− −
The manufacturer shall establish a procedure for mechanical hot working.
This procedure shall define:
• the homogenisation thermal cycle;
• the thermo-mechanical working processes;
• the manufacturing schedule for each process: the temperatures and durations of pre-
heating; the temperature range for each working process; the dimensions of the
products at each step and conditions for heat treatment between operations.
Mechanical cold working:
The manufacturer shall establish a procedure for the mechanical cold working.
This procedure shall define:
• the mechanical working processes;
• the manufacturing schedule for each process; the dimensions of the products at each step
and heat treatment conditions between operations.
Final operation:
Straightening and stress relieving operations shall be indicated in the manufacturing schedule and shall not
cause any imperfection prejudicial to the intended use.
Surface finishing:
Unless otherwise specified, products shall be supplied in the condition specified in the material standard.
4.3 Limit dimension(s) Minimum and/or maximum size of the product expressed as nominal thickness, a, or nominal thicknesses for − −
multi-legged/flanged sections, or as a nominal diameter, D, of round bar or as equivalent diameter D .
e
5 Technical specification Reference to this document EN 4700-002. In cases of conflict, the requirements of the material standard shall
− −
take precedence over those of this technical specification.
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Table 1 — Technical requirements for lines 1 to 29, where appropriate (4 of 11)
Frequency of testing
Material standard line
reference
Requirements
Qualification Release
No. Title
6.1 Delivery condition Product shall be supplied in the delivery condition specified in this line in the material standard and/or as – –
stated on the order.
 Marking:
The method of marking used shall not cause corrosion, crack initiation, contamination or unacceptable
deformation. The marking shall remain permanently visible after handling and contact with protective
products.
Unless otherwise specified, the nature and colour of marking ink and type of marking characters shall be left to
the discretion of the manufacturer. The marking inks shall be removable with cleaning products which do not
leave a residue which could affect further processing. The cleaning products shall not give rise to corrosion.
All bars shall be marked legibly in a position chosen by the manufacturer as indicated in the following tables
unless otherwise agreed between the manufacturer and customer:

  Products
a b

Continuous marking or end marking

• material grade;
• heat number;
• batch number;
• delivery condition;
• manufacturer/identification.
a

Ink or similar product shall be used.
b
Hard stamping on one end of the bar.


For small cross sections, there is a third option:


  Products of diameter or major sectional dimension, a or D < 35 mm
  The information stated in the above table shall be indelibly marked on a durable label attached to

each bundle or products.

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Table 1 — Technical requirements for lines 1 to 29, where appropriate (5 of 11)
Frequency of testing
Material standard line
reference
Requirements
Qualification Release
No. Title
6.1 Delivery condition Packing:
− −
(concluded)
All necessary precautions shall be taken to prevent damage to the product, especially where the delivered
surface finish shall be maintained.
The packing shall be suitable for the type of transportation used.
The exterior of the packing shall bear the following information:
• name and address of recipient;
• mass;
• order number and sufficient information to enable the contents to be related to the relevant
documentation.
 Shipment:
The responsibility for shipping shall be detailed in a transport contract.
Heat treatment Thermal and/or thermomechanical operations shall be applied to the product as specified in the material − −
(Delivery condition) standard and are listed in the same order as they are to be applied.
Abbreviations and symbols used in the material standard are shown in the following table: all other terms are
written in full.

  Term Abbreviation/Symbol Term Abbreviation/Symbol
temperature water quench WQ
θ
time t oil quench/polymer OQ/PQ
quench
hour h forced air quench AQ
minute min air cool AC
second s furnace cool FC



Temperature control shall be in accordance with AMS 2750 unless otherwise agreed between the customer and
supplier.



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Table 1 — Technical requirements for lines 1 to 29, where appropriate (6 of 11)
Material standard line Frequency of testing
reference
Requirements
Qualification Release
No.
Title
6.1 Heat treatment If a specific temperature (value and tolerance) is stated in the material standard or order, that temperature shall
(Delivery condition) be mandatory. If a temperature range is stated, a temperature within that range, on which by the tolerance of the
(concluded) furnace shall be applied. The total volume of the charge shall be maintained at the temperature selected, subject
to the furnace tolerances in the following table, for the period stated in the material standard:

  Selected temperatures Tolerances
°C °C
θ < 750 ± 5
750 ≤ θ ≤ 1 250 ± 10
θ > 1 250 ± 15

+ 20

When the duration of the heat treatment is stated as a fixed value, the tolerance shall be: ( ) %.
0
When the duration of the heat treatment stage is stated as a range, a time within that range shall be selected.
When the duration is not specified, it shall be at the discretion of the manufacturer.
The treatment duration stated in the material standard is the metallurgical treatment time. For industrial
treatments the furnace hold time shall be the time stated in the material standards plus the time it takes for the
bars / parts to rise to the hold temperature, and is determined as follows:
Instrumented loads: the industrial hold time starts when the coldest load temperature sensor (Fr) reaches the
treatment temperature minus the treatment tolerance. The end of industrial treatment is obtained as soon as one
of the load thermocouples reaches a temperature below the treatment temperature minus the tolerance.
Non-instrumented load: the manufacturer shall develop a method of determining the industrial hold time (start
and end). This method shall guarantee the metallurgical time requirement and shall be robust.
6.2 Delivery condition code See EN 2032-2.
− −
7 Heat treatment The use condition treatment of the product is stated in the material standard. − −
(Use condition)

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