SIST EN 2002-001:2026

Aerospace series - Metallic materials - Test methods - Part 001: Tensile testing at ambient temperature

This document is applicable to material testing and specifies the requirements for the tensile testing of metallic materials at ambient temperature for aerospace applications.
It is applied when referred to in the EN technical specification or material standard unless otherwise specified on the drawing, order or inspection schedule.

Luft- und Raumfahrt - Metallische Werkstoffe - Prüfverfahren - Teil 001: Zugversuch bei Umgebungstemperatur.

Diese Norm legt die Anforderungen für den Zugversuch bei Raumtemperatur von metallischen Werkstoffen für An¬wendungen in der Luft- und Raumfahrt fest.
Diese Norm ist anzuwenden, wenn in den technischen Lieferbedingungen einer EN-Norm oder in einer EN Werkstoffnorm darauf verwiesen wird, sofern nicht anders auf der Zeichnung, Auftrags- oder Prüfliste fest¬gelegt.

Série aérospatiale - Matériaux métalliques - Méthodes d'essais - Partie 001: Essais de traction à température ambiante

Le présent document est applicable aux essais sur les matériaux et spécifie les exigences relatives aux essais de traction à température ambiante sur les matériaux métalliques pour les applications aérospatiales.
Il est applicable lorsqu'il est cité en référence dans la spécification technique ou la norme de matériau EN, sauf spécification contraire figurant sur le dessin, la commande ou la fiche d'essais.

Aeronavtika - Kovinski materiali - Preskusne metode - 001. del: Natezni preskus pri temperaturi okolice

Ta dokument se uporablja za preskušanje materialov in določa zahteve za natezni preskus kovinskih materialov za uporabo v aeronavtiki pri temperaturi okolice. Uporablja se, kadar se nanj sklicuje v tehnični specifikaciji ali standardu EN za materiale, razen če je na risbi, v naročilu ali v razporedu pregledov navedeno drugače.

General Information

• Status: Published
• Public Enquiry End Date: 26-Nov-2024
• Publication Date: 04-Feb-2026
• ICS: 49.025.05 - Ferrous alloys in general
• ICS: 49.025.15 - Non-ferrous alloys in general
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 23-Jan-2026
• Due Date: 30-Mar-2026
• Completion Date: 05-Feb-2026
• Ref Project: EN 2002-001:2026 - Aerospace series - Metallic materials - Test methods - Part 001: Tensile testing at ambient temperature

Relations

• Refers: SIST EN ISO 9513:2013 - Metallic materials - Verification and calibration of extensometers used in uniaxial testing (ISO 9513:2012)
• Effective Date: 28-Jan-2026
• Refers: SIST EN 4259:2022 - Aerospace series - Metallic materials - Definition of general terms
• Effective Date: 28-Jan-2026
• Refers: SIST EN ISO 7500-1:2018 - Metallic materials - Calibration and verification of static uniaxial testing machines - Part 1: Tension/compression testing machines - Calibration and verification of the force-measuring system (ISO 7500-1:2018)
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4700-004:2011 - Aerospace series - Steel and heat resisting alloys - Wrought products - Technical specification - Part 004: Wire
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4372:2009 - Aerospace series - Heat resisting nickel alloy with copper NI-PD9001 (NiCu31) - Wire for solid rivets - D ≤ 10 mm
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4800-001:2011 - Aerospace series - Titanium and titanium alloys - Technical specification - Part 001: Plate, sheet and strip
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4700-002:2021 - Aerospace series - Steel and heat resisting alloys - Wrought products - Technical specification - Part 002: Bar and section
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 2941:2008 - Aerospace series - Nickel alloy rivets - Technical specification
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4800-008:2012 - Aerospace series - Titanium and titanium alloys - Technical specification - Part 008: Pre-production and production castings
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4700-001:2011 - Aerospace series - Steel and heat resisting alloys - Wrought products - Technical specification - Part 001: Plate, sheet and strip
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4700-005:2011 - Aerospace series - Steel and heat resisting alloys - Wrought products - Technical specification - Part 005: Forging stock
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 3777:2012 - Aerospace series - Pins, quick release, single and double acting - Technical specification
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4400-1:2019 - Aerospace series - Aluminium and aluminium- and magnesium- alloys - Technical specification - Part 1: Aluminium and aluminium alloy plate
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4700-003:2011 - Aerospace series - Steel and heat resisting alloys - Wrought products - Technical specification - Part 003: Tube
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4800-005:2012 - Aerospace series - Titanium and titanium alloys - Technical specification - Part 005: Forging stock
• Effective Date: 28-Jan-2026

Overview

SIST EN 2002-001:2026 - Aerospace series - Metallic materials - Test methods - Part 001: Tensile testing at ambient temperature specifies standardized requirements for conducting tensile tests on metallic materials at ambient temperature for aerospace applications. Developed by SIST and identical to EN 2002-001:2026, this standard ensures consistent mechanical testing across the aerospace sector, safeguarding product quality, material traceability, and compliance with industry requirements.

This standard is invoked when cited in an EN material standard or technical specification, unless otherwise stated on drawings, orders, or inspection schedules. It supersedes EN 2002-001:2005 and incorporates updated technical details, editorial improvements, and harmonized strain rate criteria in line with international best practices.

Key Topics

• Scope of Application

  • Applies to tensile testing of metallic materials-ferrous and non-ferrous alloys-for aerospace.
  • Covers procedures for testing at ambient temperature (10 to 35°C, or specifically 23 ± 5°C in case of dispute).
  • Utilized when referenced in EN technical specifications or material standards.

• Test Methodology

  • Outlines the principal method: straining a prepared test piece with a tensile force until fracture.
  • Determines key material properties: Young’s modulus of elasticity, tensile strength, proof stress, elongation, and reduction of area.
  • References compliance with EN ISO 7500-1 (testing machine calibration) and EN ISO 9513 (extensometer calibration).

• Testing Requirements

  • Specifies equipment accuracy and calibration intervals.
  • Details types and preparation of test samples and test pieces, accounting for different product forms (sheet, bar, wire, tube, forgings, castings).
  • Defines mandatory qualifications for personnel performing the tests.

• Reporting

  • Mandates a comprehensive test report, including reference to this standard, testing conditions, traceability, measurement specifics, and any deviations or incidents.

Applications

SIST EN 2002-001:2026 is integral to the aerospace industry, supporting:

• Material Qualification

  • Ensures metals and alloys meet performance criteria before use in aircraft or spacecraft components.
  • Validates supplier quality and supports material certification.

• Product Development and Manufacture

  • Assists in selecting and approving metallic materials for design and realization of aerospace hardware.
  • Enables comparability and repeatability in material characterization, critical in safety-focused applications.

• Compliance and Quality Assurance

  • Fulfills regulatory and customer requirements for standardized test methods.
  • Facilitates acceptance by authorities and end users throughout Europe and internationally.

• Cross-Industry Relevance

  • While focused on aerospace, principles may also benefit sectors requiring rigorous tensile testing of metals, including defense and advanced automotive industries.

Related Standards

Adherence to SIST EN 2002-001:2026 may involve coordination with additional standards, such as:

• EN 4259: Aerospace series - Metallic materials - Definition of general terms
• EN ISO 7500-1: Metallic materials - Calibration and verification of static uniaxial testing machines
• EN ISO 9513: Metallic materials - Calibration of extensometer systems
• ASTM E1012: Standard practice for verification of test frame and specimen alignment
• EN ISO 6892-1: Metallic materials - Tensile testing at room temperature

For broader quality and conformity assurance, referencing applicable aerospace and metallurgy product standards is recommended.

---

Keywords: tensile test, metallic materials, ambient temperature, aerospace material testing, SIST EN 2002-001:2026, test method, tensile strength, Young’s modulus, quality assurance, material qualification, EN standard, metallic alloys, aerospace standards.

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2026
Aeronavtika - Kovinski materiali - Preskusne metode - 001. del: Natezni preskus pri
temperaturi okolice
Aerospace series - Metallic materials - Test methods - Part 001: Tensile testing at
ambient temperature
Luft- und Raumfahrt - Metallische Werkstoffe - Prüfverfahren - Teil 001: Zugversuch bei
Umgebungstemperatur.
Série aérospatiale - Matériaux métalliques - Méthodes d'essais - Partie 001: Essais de
traction à température ambiante
Ta slovenski standard je istoveten z: EN 2002-001:2026
ICS:
49.025.05 Železove zlitine na splošno Ferrous alloys in general
49.025.15 Neželezove zlitine na Non-ferrous alloys in general
splošno
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 2002-001
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2026
EUROPÄISCHE NORM
ICS 49.025.05; 49.025.15 Supersedes EN 2002-001:2005
English Version
Aerospace series - Metallic materials - Test methods - Part
001: Tensile testing at ambient temperature
Série aérospatiale - Matériaux métalliques - Méthodes Luft- und Raumfahrt - Metallische Werkstoffe -
d'essais - Partie 001: Essais de traction à température Prüfverfahren - Teil 001: Zugversuch bei
ambiante Umgebungstemperatur.
This European Standard was approved by CEN on 10 November 2025.

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, Türkiye 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
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 2002-001:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Health and safety . 11
5 Principle of tensile testing . 11
6 Testing requirements . 11
6.1 Resources . 11
6.1.1 Equipment/plant . 11
6.1.2 Materials/reagents . 12
6.1.3 Qualification of personnel . 12
6.2 Test samples/test pieces . 12
6.2.1 Shape and dimensions . 12
6.2.2 Product types . 13
6.2.3 Preparation of test pieces . 13
6.3 Testing procedure . 13
6.3.1 Determination of the cross-sectional area . 13
6.3.2 Marking the original gauge length (L ) . 14
6.3.3 Method of gripping . 14
6.3.4 Extensometer . 14
6.3.5 Temperature of test . 15
6.3.6 Speed of testing . 15
6.3.7 Young’s modulus of elasticity (E), selection of test method . 16
6.4 Determination and expression of test results . 16
6.4.1 Determination of Young’s modulus of elasticity (E). 16
6.4.2 Determination of proof stress (R ) . 17
p
6.4.3 Determination of tensile strength (R ) . 17
m
6.4.4 Determination of percentage elongation after fracture (A, 𝐀𝐀 or A ) . 17
x
𝐋𝐋
𝟎𝟎
6.4.5 Determination of percentage reduction of area after fracture (Z) . 18
7 Test report . 18
Annex A (normative) Test pieces to be used for sheets and strips with thickness less than
or equal to 8 mm . 20
Annex B (normative) Non-machined test pieces to be used for bars, sections and wires with
a diameter or thickness less than or equal to 8 mm . 22
Annex C (normative) Machined test pieces to be used for bars, sections, plates and wires
with diameter or thickness greater than 8 mm and for forgings and castings . 23
Annex D (normative) Test pieces to be used for tubes . 26
Bibliography . 28

European foreword
This document (EN 2002-001:2026) has been prepared by 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 July 2026, and conflicting national standards shall be withdrawn
at the latest by July 2026.
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 2002-001:2005.
EN 2002-001:2005:
— overall editorial improvements;
— subclause 6.3.6.2: “0,003 to 0,007 (0,3 % to 0,7 %) per min., a strain rate of 0,005 (0,5 %) per min is
preferred” changed to “The test shall be performed at a strain rate as required in Table 2 and
Table 3”.
The strain-rate, mentioned in 6.3.6.2, of 0,003/min to 0,007/min is too low for aluminium and
aluminium alloys. ASTM B557 work with a rate of stress application of maximum 11,5 MPa/s. For
aluminium with an E-Modulus of about 72 000 MPa this results to a strain-rate of 0,01/min. All
testing machines work with a stressing rate in this range of 11,5 MPa/s. So consequently, beginning
with leaving the Hooke's line (linear relationship between stress and strain) up to achieving the yield
strength R significant higher strain rates of 0,04/min to 0,05/min at simultaneously significant
p0,2
decreasing stressing rates are determined.
EN ISO 6892-1 allows for materials with an E-Modulus less than 150 000 MPa a stress rate up to
20 MPa/s. The preferred strain rate is 0,015/min for all materials.
— subclause 6.3.6.3: if the test is to be continued to fracture, the strain rate of the parallel length may
be increased beyond the proof stress but shall not exceed a value of 0,1 (10 %) per min. Changed to:
“If the test is to be continued to fracture, the strain rate of the parallel length may be increased
beyond the proof stress but shall not exceed a value required in Table 2 and Table 3”.
The strain-rate, mentioned in 6.3.6.3, of 0,1 (10 %)/min is significantly too low for aluminium and
aluminium alloys. All other relevant specifications (ASTM B557 or EN ISO 6892-1) allow a strain rate
up to 0,5 (50 %)/min. That means conversely, one tensile test would take five times longer by
application of EN 2002-001. The throughput of one test-machine would decrease to 1/5;
— subclauses 6.3.6.2 and 6.3.6.3: Table 2 shows the required test speeds implemented for aluminium
and aluminium alloys. Table 3 contains the unchanged requirements for all other metallic materials.
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, Türkiye and the
United Kingdom.
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.
1 Scope
This document is applicable to material testing and specifies the requirements for the tensile testing of
metallic materials at ambient temperature for aerospace applications.
This document is applicable when referred to in the EN technical specification or 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 4259, Aerospace series — Metallic materials — Definition of general terms
EN ISO 7500-1, Metallic materials — Calibration and verification of static uniaxial testing machines —
Part 1: Tension/compression testing machines — Calibration and verification of the force-measuring
system (ISO 7500-1)
EN ISO 9513, Metallic materials — Calibration of extensometer systems used in uniaxial testing
(ISO 9513)
ASTM E1012, Standard practice for verification of test frame and specimen alignment under tensile and
compressive axial force application
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 4259 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
test piece
portion of the test sample on which the tensile test is carried out
3.2
proportional test piece
test piece with an original gauge length (L ) having a specified relationship to the square root of the
cross-sectional area (S )
Note 1 to entry: The proportionality coefficient, K, has the internationally recognized value of 5,65 for test pieces
of circular cross-section. The gauge length of a proportional test piece is therefore equal to 5,65√(S ). Certain
material standards use proportional test pieces with other than the 5,65 proportionality coefficient. In this case,
see Ax for the percentage elongation symbol used.

Published by American Society for Testing and Materials (ASTM International), available at:
https://www.astm.org/.
3.3
non-proportional test piece
test piece where the original gauge length is independent of the cross-sectional area
3.4
extension
increase of the extensometer gauge length (L ) at any moment during the test
e
Note 1 to entry: The unit is mm.
3.5
limit of proportionality
stress at which the stress-strain (or force-extension) relationship deviates from a straight line
Note 1 to entry: The unit is MPa.
3.6
percentage elongation
A
elongation after fracture expressed as a percentage of the original gauge
length (L ) for a proportional test piece with an original gauge length of L = 5,65 𝑆𝑆
0 0 �
Note 1 to entry: For non-standard proportional test piece, see A .
x
𝐿𝐿 −𝐿𝐿
𝑢𝑢 0
Note 2 to entry: A = × 100.
𝐿𝐿
Note 3 to entry: The unit is %.
3.7
percentage elongation
A
L0
elongation after fracture expressed as a percentage of the original gauge
length (L ) for a non-proportional test piece with an original gauge length of L
0 0
Note 1 to entry: For a non-proportional test piece, the original gauge length is given in millimetres, e.g. A50mm.
𝐿𝐿  − 𝐿𝐿
𝑢𝑢 0
Note 2 to entry: AL0 = × 100.
𝐿𝐿
Note 3 to entry: The unit is %.
3.8
percentage elongation
A
x
elongation after fracture expressed as a percentage of the
original gauge length (L ) for a non-standard proportional test piece with an original gauge length of
L = x d
EXAMPLE A4
Note 1 to entry: A non-standard proportional test piece is one in which the proportionality coefficient has a value
other than 5,65. In the example above the gauge length is four times the diameter, equivalent to a proportionality
coefficient of 4,51.
Note 2 to entry: The unit is %.
3.9
test piece thickness
a
thickness of a test piece of rectangular cross-section or wall thickness of a tube
Note 1 to entry: The unit is mm.
3.10
test piece width
b
width of test pieces of rectangular cross-section, average width of the longitudinal strip taken from a
tube or width of a flat wire
Note 1 to entry: The unit is mm.
3.11
tube external diameter
D
external diameter of a tube
Note 1 to entry: The unit is mm.
3.12
test piece diameter
d
diameter of the parallel length of a circular test piece or diameter of round wire or internal diameter of
a tube
Note 1 to entry: The unit is mm.
3.13
Young's modulus of elasticity
E
value of the increment in stress divided by the corresponding increment in strain for the straight
portion of the stress-strain (or force-extension) diagram
Note 1 to entry: The unit is GPa.
3.14
maximum force
F
m
greatest force which the test piece withstands during the test
Note 1 to entry: The unit is N.
3.15
gauge length
L
length of the cylindrical or prismatic portion of the test piece on which elongation is measured
Note 1 to entry: The unit is mm.
3.16
parallel length
L
c
length of the reduced section of the parallel portion of the test piece
Note 1 to entry: The concept of parallel length is replaced by the concept of distance between grips for non-
machined test pieces.
Note 2 to entry: The unit is mm.
3.17
extensometer gauge length
L
e
length of the parallel portion of the test piece used for the measurement of extension by means of an
extensometer at any moment during the test
Note 1 to entry: This length may differ from L0 but can be of any value greater than b, d or D (see above) but shall
be less than the parallel length (L ).
c
Note 2 to entry: It is recommended that the extensometer gauge length is as large as possible.
Note 3 to entry: The unit is mm.
3.18
original gauge length
L
gauge length before the application of force
Note 1 to entry: The unit is mm.
3.19
test piece length
L
t
total length of test piece
Note 1 to entry: The unit is mm.
3.20
final gauge length
L
u
gauge length after fracture of the test piece
Note 1 to entry: The unit is mm.
3.21
elongation
L -L
u 0
elongation after fracture
Note 1 to entry: The permanent increase in the original gauge length (L ) after fracture.
Note 2 to entry: The unit is mm.
3.22
tensile strength
R
m
maximum force (F ) divided by the original cross-sectional area (S ) of the test piece
m 0
Note 1 to entry: The unit is MPa.
3.23
proof stress
R
p
stress at which a non-proportional extension is equal to a specified percentage of the extensometer
gauge length (L )
e
Note 1 to entry: See Figure 1.
Note 2 to entry: The symbol used is followed by a suffix giving the prescribed percentage of the original gauge
length for example: R .
p0,2
Note 3 to entry: The unit is MPa.
3.24
test piece transition radius
r
radius at ends of parallel length
Note 1 to entry: The unit is mm.
3.25
original cross-sectional area
S
original cross-sectional area of the parallel length
Note 1 to entry: The unit is mm .
3.26
minimum cross-sectional area
S
u
minimum cross-sectional area of test piece after fracture
Note 1 to entry: The unit is mm .
3.27
percentage reduction of area after fracture
Z
maximum decrease of the cross-sectional area (S0 – Su) expressed as a percentage of the original cross-
𝑆𝑆−𝑆𝑆
0 𝑢𝑢
sectional area (S ), i.e. Z = × 100
𝑆𝑆
Note 1 to entry: The unit is %.
3.28
strain
ε
extension of any moment during the test divided by the original gauge length (L ) of the test piece
3.29
stress
σ
force at any moment during the test divided by the original cross-section area (S ) of the test piece
Note 1 to entry: The unit is MPa.
3.30
specified temperature
θ
temperature at which the test is to be carried out
Note 1 to entry: The unit is °C.
4 Health and safety
NOTE 1 Regarding resources, test pieces, test samples, test materials, test equipment and test procedures,
attention is drawn to the health and safety regulations of the countries where the test is to be carried out.
NOTE 2 Regarding materials or reagents that might be hazardous to health, attention is drawn to appropriate
precautions specified in local regulations of the countries where the test is to be carried out.
5 Principle of tensile testing
The test involves straining a test piece by a tensile force at ambient temperature to fracture for the
purpose of determining one or more of the following properties: Young’s modulus of elasticity, proof
stress, tensile strength, elongation, reduction of area.
6 Testing requirements
6.1 Resources
6.1.1 Equipment/plant
6.1.1.1 Testing machine
Testing machine accuracy shall be verified at intervals not exceeding 12 months in accordance with
EN ISO 7500-1 and shall be certified to Class 1 or better.
The design of the testing machine shall permit automatic loading alignment. The loading system
alignment shall be checked at least annually with a strain-gauged test piece. The difference between the
recorded maximum and minimum strains shall not exceed 10 % of the mean strain at an appropriate
verification force relative to the forces expected during a subsequent series of tests. Reference may be
made to ASTM E1012 for a verification method.
It may be computer-controlled and capable of automatic calculation and recording of Young’s modulus
of elasticity, proof stress, tensile strength and elongation.

6.1.1.2 Extensometer
The extensometer accuracy shall be verified at intervals not exceeding 12 months in accordance with
EN ISO 9513 and shall be certified for determination of:
a) Young’s modulus of elasticity to Class 0,5 or better and a type that is capable of measuring
extension on both sides of a test piece and allows readings to be averaged is preferred;
b) proof stress to Class 1 or better.
6.1.1.3 Grips
Grips shall consist of screwed holders, shouldered holders, wedge pieces, pin grips or other means such
that the tensile test force is applied axially.
The use of screwed holders is recommended and shall be mandatory in case of dispute.
Grips for tubes may, in addition, use plugs that shall be of:
a) an appropriate diameter in order to be gripped at both ends;
b) a length at least equal to that of the grips and may project beyond the grips for a maximum length
equal to the external diameter of the tube;
c) a shape that shall have no effect on the deformation of the gauge length.
6.1.2 Materials/reagents
Materials/reagents may include suitable:
a) degreasing fluids;
b) recording paper;
c) means of electronic recording, if appropriate;
d) marking inks.
6.1.3 Qua
...