SIST EN 4700-004:2011

Aerospace series - Steel and heat resisting alloys - Wrought products - Technical specification - Part 004: Wire

This European Standard defines the requirements for the ordering, manufacture, testing, inspection and delivery of steel and heat resisting alloy wire. 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.

Luft- und Raumfahrt - Stahl und Hochwarmfesten Legierungen - Umgeformte Erzeugnisse - Technische Lieferbedingungen - Teil 004: Drähte

Diese Norm legt die Anforderungen an die Bestellung, Herstellung, Prüfung, Inspektion und Lieferung von
Drähten aus Stahl und hochwarmfesten Legierungen fest. Sie ist anzuwenden, wenn sie bei Verweisung auf
oder in Verbindung mit der EN-Werkstoffnorm erwähnt wird, sofern in der Zeichnung, Bestellung oder der
Prüfanweisung nichts anderes angegeben ist.

Série aérospatiale - Aciers et alliages résistant à chaud - Produits corroyés - Spécification technique - Partie 004: Fils

Cette Norme européenne définit les exigences relatives aux commandes, fabrication, essais, contrôles et livraison de fils en acier et alliages résistants à chaud. La présente norme est applicable lorsqu'elle est citée dans la norme de matériaux EN et conjointement avec celle-ci sauf instruction contraire figurant sur le dessin, la commande ou la fiche d’essai.

Aeronavtika - Jeklo in zlitine, odporne proti vročini - Gneteni izdelki - Tehnična specifikacija - 004. del: Žice

Ta evropski standard določa zahteve za naročanje, proizvodnjo, preskušanje, pregledovanje in dobavo žic iz jekla in zlitin, odpornih proti vročini. Uporablja se, kadar se nanaša na standard EN za materiale in skupaj z njim, razen če je drugače določeno na risbi, naročilu ali urniku pregleda.

General Information

• Status: Published
• Publication Date: 07-Apr-2011
• ICS: 49.025.10 - Steels
• ICS: 77.140.65 - Steel wire, wire ropes and link chains
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 29-Mar-2011
• Due Date: 03-Jun-2011
• Completion Date: 08-Apr-2011
• Ref Project: EN 4700-004:2010 - Aerospace series - Steel and heat resisting alloys - Wrought products - Technical specification - Part 004: Wire

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 4700-004:2011
01-maj-2011
$HURQDYWLND-HNORLQ]OLWLQHRGSRUQHSURWLYURþLQL*QHWHQLL]GHONL7HKQLþQD
VSHFLILNDFLMDGHOäLFH
Aerospace series - Steel and heat resisting alloys - Wrought products - Technical
specification - Part 004: Wire
Luft- und Raumfahrt - Stahl und Hochwarmfesten Legierungen - Umgeformte
Erzeugnisse - Technische Lieferbedingungen - Teil 004: Drähte
Série aérospatiale - Aciers et alliages résistant à chaud - Produits corroyés -
Spécification technique - Partie 004: Fils
Ta slovenski standard je istoveten z: EN 4700-004:2010
ICS:
49.025.10 Jekla Steels
77.140.65 Jeklene žice, jeklene vrvi in Steel wire, wire ropes and
verige link chains
SIST EN 4700-004:2011 en,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 4700-004:2011

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SIST EN 4700-004:2011


EUROPEAN STANDARD
EN 4700-004

NORME EUROPÉENNE

EUROPÄISCHE NORM
October 2010
ICS 77.140.65; 49.025.10
English Version
Aerospace series - Steel and heat resisting alloys - Wrought
products - Technical specification - Part 004: Wire
Série aérospatiale - Aciers et alliages résistant à chaud - Luft- und Raumfahrt - Stahl und Hochwarmfesten
Produits corroyés - Spécification technique - Partie 004 : Legierungen - Umgeformte Erzeugnisse - Technische
Fils Lieferbedingungen - Teil 004: Drähte
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 4700-004:2010: E
worldwide for CEN national Members.

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SIST EN 4700-004:2011
EN 4700-004:2010 (E)
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
2

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SIST EN 4700-004:2011
EN 4700-004:2010 (E)
Foreword
This document (EN 4700-004:2010) 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 April 2011, and conflicting national standards shall be withdrawn at the
latest by April 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.
3

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SIST EN 4700-004:2011
EN 4700-004:2010 (E)
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.
4

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SIST EN 4700-004:2011
EN 4700-004:2010 (E)
1 Scope
This standard defines the requirements for the ordering, manufacture, testing, inspection and delivery of steel
and heat resisting alloy wire. 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 —
1)

Penetrant testing
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 2857-1, Aerospace series — Metallic materials — Test methods for ferromagnetic materials —
2)
Non-destructive testing — Magnetic particle inspection — Part 1: General requirements
EN 2857-2, Aerospace series — Metallic materials — Test methods for ferromagnetic materials —
2)
Non-destructive testing — Magnetic particle inspection — Part 2: Inspection requirements
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 — Test method — Micrographic determination of content of
1)
non-metallic inclusions
EN 4258, Aerospace series — Metallic materials — General organization of standardization — Links between
types of EN standards and their use
1)

EN 4259, Aerospace series — Metallic materials — Definition of general terms
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 10027-1, Designation systems for steels — Part 1: Steel names

1) Published as ASD-STAN Prestandard at the date of publication of this standard.
2) In preparation at the date of publication of this standard.
5

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SIST EN 4700-004:2011
EN 4700-004:2010 (E)
EN 10079, Definition of steel products
EN ISO 643, Steels — Micrographic determination of the apparent grain size (ISO 643:2003)
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) (ISO 3651-1:1998)
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
(ISO 3651-2:1998)
EN ISO 3887, Steels — Determination of depth of decarburization (ISO 3887:2003)
EN ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method (ISO 6506-1:2005)
EN ISO 6507-1, Metallic materials — Vickers hardness test — Part 1: Test method (ISO 6507-1:2005)
EN ISO 6508-1, Metallic materials — Rockwell hardness test — Part 1: Test method (scales A, B, C, D, E, F,
G, H, K, N, T) (ISO 6508-1:2005)
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)
ISO 7800, Metallic materials — Wire — Simple torsion test
ISO 7801, Metallic materials — Wire — Reverse bend test
ISO 7802, Metallic materials – Wire — Wrapping test
ISO 9649, Metallic materials — Wire — Reverse torsion test
TR 2410, Aerospace series — Metallic materials — Relationship between dimensional standards and material
3)
standards
AMS 2315, Determination of Delta Ferrite Content
4)
AMS 2750, Pyrometry
ASTM A604, Standard Test Method for Macroetch Testing of Consumable Electrode Remelted Steel Bars and Billets
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.

3) Published as ASD-STAN Technical Report at the date of publication of this standard.
4) Published by: SAE International, SAE World Headquarters400 Commonwealth Drive Warrendale, PA 15096-0001 USA.
6

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SIST EN 4700-004:2011
EN 4700-004:2010 (E)
3.1
batch
As defined in EN 4259 with the following addition:
 for heat treatment using a continuous furnace, a continuous run of less than or equal to 8 h may be
considered as the same heat treatment charge. Continuous heat treatment can be an option.
4 Wording of order
The order shall clearly indicate:
 quantities to be supplied;
 dates of delivery;
 material standard 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;
 surface protection, if appropriate;
 definition and frequency of any special tests and their retest procedures, if required.
5 Health and safety
The products 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 defects 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
7

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SIST EN 4700-004:2011
EN 4700-004:2010 (E)
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.
Unless otherwise agreed between the manufacturer and purchaser the qualification phase shall be run on the
first three batches, coming from at least two casts.
6.3 Release requirements
6.3.1 Release tests
Release testing shall be the responsibility of the manufacturer.
The purchaser 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 purchaser of the planned dates for extraction of
samples and release testing in order that these operations may be witnessed.
Tables 1 and 2 detail the requirements for each line of the material standard. Unless otherwise specifically
requested by the purchaser, 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.
6.3.2 Retests
If any requirement is not met, retests shall be carried out under the following conditions unless otherwise stated
in the material standard or order.
If the test procedure or test piece preparation is faulty, testing shall be re-applied at the original frequency after
rectification of the original cause of failure, on a test sample located near the first one.
For wire with hardness results below the minimum or above the maximum value, the softest or hardest wire, as
appropriate, shall be submitted to a tensile test. If the results comply with the specified tensile requirements, all
wire shall be accepted.
When failure cannot be attributed to faulty testing, or test piece preparation, further test samples shall be
selected at twice the original frequency from the product, one of which shall be that on which the original results
were obtained unless already withdrawn by the manufacturer after suitable identification of the cause of failure.
If all retest results are satisfactory, the batch shall be accepted. If one or more tests are unsatisfactory, the
batch shall be:
 rejected; or
 100 % retested and the conforming products accepted; or
 partially or fully re-heat treated if heat treatment can rectify the cause of the failure and tested as a
completely new batch except for chemical composition and cleanness inspection. The reheat treatment
shall be stated on the release test certificate.
For cleanness inspection, if the material fails the requirement the product may be cut back before retesting.
8

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SIST EN 4700-004:2011
EN 4700-004:2010 (E)
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 purchaser. 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 purchaser.
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 purchaser).
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 purchaser.
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
purchaser 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:
 manufacturer's name and address and, if appropriate, identification of the plant;
 order number;
 material standard number;
 method of melting;
 delivery condition and metallurgical code of the product;
 quantity and dimensions;
 manufacturing and inspection schedule reference;
 cast and batch number;
 all heat treatment, including re-heat treatment and, where appropriate, straightening and stress relieving
parameters, applied to the batch;
 test sample heat treatment;
 results of the tests and retests if any.
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SIST EN 4700-004:2011
EN 4700-004:2010 (E)
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.

10

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SIST EN 4700-004:2011
EN 4700-004:2010 (E)
Table 1 — Technical requirements for lines 1 to 29, where appropriate
Frequency of testing
Material standard line
reference
Requirements
Qualification Release
No. Title
1 Material designation EN 2032-1 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 a) 1 per cast in
the case of air the case of air
The samples taken for analysis shall be representative of the melt.
melted or melted or
vacuum vacuum
The method of analysis shall be at the option of the manufacturer, but in cases of dispute, the reference
induction induction
method set out in the relevant EN or ISO standard shall be used. If no EN or ISO standard exists, a
melted product melted product
fundamental and agreed method of chemical analysis calibrated against accepted reference standards shall
be used.
b) 2 per VAR or b) 1 per VAR ingot
ESR ingot
In the case of remelted material, samples shall be taken from positions as follows:
c) 1 per ESR ingot
representing
a) Vacuum arc remelted (VAR) ingots: the bottom of each ingot or ingot product. top and bottom
positions
b) Electroflux or electroslag (ESR) remelted ingots: the top and bottom ends of each ingot or ingot
product.
An analysis shall be made of each sample and certificates of analysis shall be supplied to the purchaser.
The elements to be determined shall be as required by the material specification or as agreed between the
manufacturer and the purchaser.
Elements not quoted in the material standard shall not be intentionally added to the alloy without the
agreement of the purchaser, except for the purpose of finishing the heat (e.g. addition of deoxidant);
reasonable precautions shall be taken to prevent their inclusion during manufacture. The purchaser, 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.
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 purchaser. If a specification permits alternative processes, the manufacturer
shall decide which of them shall be used unless the purchaser 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.
continued
11

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SIST EN 4700-004:2011
EN 4700-004:2010 (E)
Table 1 — Technical requirements for lines 1 to 29, where appropriate (continued)
Frequency of testing
Material standard line
reference
Requirements
Qualification Release
No. Title
3 Method of melting 2 Consumable electrode remelted material − −
(concluded)
2.1 Except as provided in 2.3 or 2.4 at no time during remelting shall material of any other composition or
type be introduced into the melting chamber, i.e. starter material and electrode stub-ends shall be of the
same composition as the material being remelted.
2.2 Whenever possible and except as provided in 2.3, weld material used to join electrodes together and
to join the electrode to the stub-end shall be of the same composition as the material being remelted. If
such weld material is not obtainable, material of a similar composition to, or compatible with, the material
being remelted may be used at the discretion of the manufacturer, unless the purchaser indicates that his
prior agreement is required.
2.3 Alternatively to 2.1 and 2.2, for VAR or ESR remelting, the stub and any weld material may be
different from that being remelted, provided that the remelted material is not contaminated with material
from the stub-ends or weld and that, for vacuum arc remelting, the stub welding takes place outside the
furnace. Remelting shall be terminated not less than 20 mm from the electrode/stub interface and, after
completion of the remelting cycle, the electrode/stub interface shall be examined to verify that the stub and
weld are intact.
2.4 For electro-flux melting and vacuum arc remelting, material compatible with the composition of that
being remelted shall be permitted to provide electrical contact to the furnace base plate, provided that the
chemical composition of the melt is maintained.
4.1 Form Wire
− −
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.
continued
12

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SIST EN 4700-004:2011
EN 4700-004:2010 (E)
Table 1 — Technical requirements for lines 1 to 29, where appropriate (continued)
Frequency of testing
Material standard line
reference
Requirements
Qualification Release
No. Title
4.2 Method of production Mechanical cold working: − −
(concluded)
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.
Unless otherwise specified by the material standard or order, products shall be supplied in the descaled
condition.
Final operation:
Straightening and stress relieving operations shall be indicated in the manufacturing schedule and shall not
cause any defects 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 the nominal diameter, D. − −
5 Technical specification Reference to this technical specification EN 4700-004. In cases of conflict, the requirements of the material
− −
standard shall take precedence over those of this technical specification.
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:

A durable label shall be securely attached to each coil of wire.
The label shall bear the following identification marking:
 material standard number;
 delivery condition code;
 batch number;
 manufacturer's name and, where appropriate, identity of the plant;
 nominal diameter of wire, in millimetres;
 weight;
 inspector's stamp.
continued
13

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SIST EN 4700-004:2011
EN 4700-004:2010 (E)
Table 1 — Technical requirements for lines 1 to 29, where appropriate (continued)
Frequency of testing
Material standard line
reference
Requirements
Qualification Release
No. Title
6.1 Delivery condition Packing:
(continued)
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
− −
standard and are listed in the same order as they are to be applied. No product shall be subject to refining,
hardening, normalising, softening, solution treatment, primary hardening or precipitation or combination
thereof more than twice without the agreement of the purchaser. 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 OQ
hour h forced air quench AQ
minute min air cool AC
second s furnace cool FC

AMS 2750 to be used unless otherwise agreed between customer and supplier.
continued
14

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SIST EN 4700-004:2011
EN 4700-004:2010 (E)

Table 1 — Technical requirements for lines 1 to 29, where appropriate (continued)
Frequency of testing
Material standard line
reference
Requirements
Qualification Release
No. Title
Heat treatment If a specific temperature (value and tolerance) is stated in the material standard or order, that temperature
(concluded) shall be mandatory. If a temperature range is stated, a temperature within that range, reduced by the
tolerances of the furnace, shall be selected. 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.
6.2 Delivery condition code See EN 2032-2.
− −
7 Use condition The use condition treatment of the product is stated in the material standard. − −
Heat treatment If the delivery condition is the use condition, no further heat treatment shall be applied to the product. − −
If the delivery condition is not the use condition, the product shall be subject to heat treatment(s) in the
same order as those specified in the material standard. No product shall be re-hardened or re-solution heat
treated more than once without the agreement of the purchaser.
Thermal and/or thermomechanical operations shall be applied to the product as specified in the material
standard and are listed in the same order as they are to be applied. No product shall be subject to refining,
hardening, normalising, softening, solution treatment, primary hardening or precipitation or combination
thereof more than twice without the agreement of the purchaser. Abbreviations and symbols used in the
material standard are shown in the following table: all other terms are written in full.
continued
15

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