oSIST prEN ISO 2566-2:2021

Steel - Conversion of elongation values - Part 2: Austenitic steels (ISO/FDIS 2566-2:2021)

MINOR REVISION

Stahl - Umrechnung von Bruchdehnungswerten - Teil 2: Austenitische Stähle (ISO/FDIS 2566-2:2021)

Dieses Dokument legt ein Verfahren für die Umrechnung von prozentualen Dehnungswerten nach erfolgtem Bruch bei Raumtemperatur fest, bei dem Bruchdehnungswerte, die bei verschiedenen proportionalen und nicht-proportionalen Messlängen ermittelt wurden, auf andere Messlängen umgerechnet werden.
Die Gleichung (1), die den Umrechnungen zugrunde liegt, gilt als zuverlässig, wenn sie auf austenitische nichtrostende Stähle im Zugfestigkeitsbereich von 450 N/mm2 bis 750 N/mm2 und im lösungsbehandelten Zustand angewendet wird.
Diese Umrechnungen sind nicht anwendbar auf:
a) kaltgewalzte Stähle;
b) vergütete Stähle;
c) nicht-austenitische Stähle.
Diese Umrechnungen sollten nicht angewendet werden, wenn die Messlänge 25√(S_0 ) überschreitet oder das Verhältnis der Probenbreite zur -dicke größer als 20 ist.

Acier - Conversion des valeurs d'allongement - Partie 2: Aciers austénitiques (ISO/FDIS 2566-2:2021)

Jekla - Pretvarjanje vrednosti raztezkov - 2. del: Avstenitna jekla (ISO/FDIS 2566-2:2021)

General Information

• Status: Not Published
• Public Enquiry End Date: 10-Oct-2021
• ICS: 77.040.10 - Mechanical testing of metals
• ICS: 77.080.20 - Steels
• Technical Committee: PKG - Testing of metallic materials
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 02-Aug-2021
• Due Date: 20-Dec-2021
• Ref Project: prEN ISO 2566-2 - Steel - Conversion of elongation values - Part 2: Austenitic steels (ISO/FDIS 2566-2:2021)

RELATIONS

• Revised: SIST EN ISO 2566-2:2000 - Steel - Conversion of elongation values - Part 2: Austenitic steels (ISO 2566-2:1984)
• Effective Date: 10-Jun-2020

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN ISO 2566-2:2021
01-oktober-2021

Jekla - Pretvarjanje vrednosti raztezkov - 2. del: Avstenitna jekla (ISO/FDIS 2566-

2:2021)

Steel - Conversion of elongation values - Part 2: Austenitic steels (ISO/FDIS 2566-

2:2021)

Stahl - Umrechnung von Bruchdehnungswerten - Teil 2: Austenitische Stähle (ISO/FDIS

2566-2:2021)

Acier - Conversion des valeurs d'allongement - Partie 2: Aciers austénitiques (ISO/FDIS

2566-2:2021)
Ta slovenski standard je istoveten z: prEN ISO 2566-2
ICS:
77.040.10 Mehansko preskušanje kovin Mechanical testing of metals
77.080.20 Jekla Steels
oSIST prEN ISO 2566-2:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 2566-2:2021
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oSIST prEN ISO 2566-2:2021
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 2566-2
ISO/TC 17/SC 20
Steel — Conversion of elongation
Secretariat: SIS
values —
Voting begins on:
2021-07-22
Part 2:
Voting terminates on:
Austenitic steels
2021-10-14
Acier — Conversion des valeurs d'allongement —
Partie 2: Aciers austénitiques
ISO/CEN PARALLEL PROCESSING
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 2566-2:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. ISO 2021
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oSIST prEN ISO 2566-2:2021
ISO/FDIS 2566-2:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
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oSIST prEN ISO 2566-2:2021
ISO/FDIS 2566-2:2021(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms, definitions and symbols ............................................................................................................................................................ 1

3.1 Terms and definitions ....................................................................................................................................................................... 1

3.2 Symbols ......................................................................................................................................................................................................... 2

4 Basic formula ........................................................................................................................................................................................................... 2

5 Requirements on conversions ................................................................................................................................................................ 2

6 Conversion from one proportional gauge length to another proportional gauge length .........3

7 Conversion from one non-proportional gauge length to another non-proportional

gauge length for test pieces of equal cross-sectional area ........................................................................................ 3

8 Conversion from a non-proportional gauge length to another non-proportional

gauge length for test pieces of different cross-sectional areas ............................................................................ 4

9 Conversion from a proportional gauge length to a non-proportional gauge length ......................4

9.1 General ........................................................................................................................................................................................................... 4

9.2 Conversion factors from 56, 5 S to non-proportional gauge length .................................................. 4

9.3 Conversion factors from 4 S to non-proportional gauge length .......................................................... 7

9.4 Elongation values ...............................................................................................................................................................................10

10 Use of Figures ........................................................................................................................................................................................................26

© ISO 2021 – All rights reserved iii
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oSIST prEN ISO 2566-2:2021
ISO/FDIS 2566-2:2021(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/

iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 20, General

technical delivery conditions, sampling and mechanical testing methods, in collaboration with the

European Committee for Standardization (CEN) Technical Committee CEN/TC 459/SC 1, Test methods

for steel (other than chemical analysis), in accordance with the Agreement on technical cooperation

between ISO and CEN (Vienna Agreement).

This second edition cancels and replaces the first edition (ISO 2566-1:1984), of which it constitutes a

minor revision. The changes compared to the previous edition are as follows:
— Complete editorial revision;

— Tables 2 to 5 have been renamed due to reordering in order to follow the logical flow of information

of this document;

— Clause 8 has been restructured into four sub-clauses in order to follow the logical flow of information

of this document.
A list of all parts in the ISO 2566 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved
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oSIST prEN ISO 2566-2:2021
ISO/FDIS 2566-2:2021(E)
Introduction

Several different gauge lengths are commonly in use for the determination of percentage elongation of

steels in tensile testing. Fixed gauge lengths of 50 mm, 80 mm, 100 mm and 200 mm are used;

proportional gauge lengths of kS are also used for flat and round test pieces, where k may be one of

a number of values, i.e. 4; 5,65; 8,16 or 11,3.

The value 56, 5 S is adopted as the internationally preferred proportional gauge length.

Arising from this choice and the existence of specifications stipulating minimum percentage elongations

on different gauge lengths, a growing need has been evident for an International Standard that could be

used to convert test results into values based on the different gauge lengths. Accordingly, this document

includes tables of conversion factors, tables of actual conversions for some of the most commonly used

gauge lengths and elongation values, and figures which may also be used for such conversions. When

using these conversions, however, note should be taken of the limitations on their applicability as stated

in Clause 1.
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oSIST prEN ISO 2566-2:2021
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oSIST prEN ISO 2566-2:2021
FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 2566-2:2021(E)
Steel — Conversion of elongation values —
Part 2:
Austenitic steels
1 Scope

This document specifies a method of converting room temperature percentage elongations after

fracture obtained on various proportional and non-proportional gauge lengths to other gauge lengths.

Formula (1), on which conversions are based, is considered to be reliable when applied to austenitic

stainless steels within the tensile strength range 450 to 750 N/mm2 and in the solution treated

condition.
These conversions are not applicable to:
a) cold reduced steels;
b) quenched and tempered steels;
c) non-austenitic steels.

These conversions are not applicable when the gauge length exceeds 25 S or where the width to

thickness ratio of the test piece exceeds 20.
2 Normative references
There are no normative references in this document.
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1.1
gauge length
length of the parallel portion of the test piece used for measurement of strain

Note 1 to entry: The term is hereafter used in this document to denote the original gauge length, L , marked on

the test piece for the determination of percentage elongation after fracture, A.
3.1.2
proportional gauge length

gauge length (3.1.1) having a specified relation to the square root of the cross-sectional area, for

example 56, 5 S
© ISO 2021 – All rights reserved 1
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oSIST prEN ISO 2566-2:2021
ISO/FDIS 2566-2:2021(E)
3.1.3
non-proportional gauge length

gauge length (3.1.1) not specifically related to the cross-sectional area of the test piece, usually

expressed in a given dimension, for example 50 mm
3.2 Symbols
A Percentage elongation after fracture on a gauge length, obtained on test
A Percentage elongation on a different gauge length, required by conversion
d Diameter of test piece
L Original gauge length
Original cross-sectional area of test piece
4 Basic formula

The data contained in this document are based on a formula obtained from a statistical assessment of

international test results, which, in a simplified form, can be expressed as Formula (1):

0,127
 
AA=12, 5 (1)
 
 0 
where
A is the required elongation on gauge length L ;
r 0
is the elongation on gauge length of 56, 5 S ;
L is the original gauge length;
S is the original cross-sectional area of test piece.
Expressed in terms of 4 S , Formula (1) becomes Formula (2):
0,127
 
AA=11, 9 (2)
 
 0 
where A is the elongation on gauge length of 4 S .
Tables 1 to 21 and Figures 1 to 5 are based on Formulae (1) and (2).

Care should be exercised in the case of strip under 3 mm thickness, as the index in Formulae (1) and (2)

increases with decreasing thickness; the value to be used shall be the subject of agreement between the

customer and the supplier.
5 Requirements on conversions

While, as indicated, the conversions are considered to be reliable within the stated limitations, because

of the various factors influencing the determination of percentage elongations, they shall be used for

acceptance purposes only by agreement between the customer and supplier.

In cases of dispute, the elongation shall be determined on the gauge length stated in the relevant

specification.
2 © ISO 2021 – All rights reserved
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oSIST prEN ISO 2566-2:2021
ISO/FDIS 2566-2:2021(E)
6 Conversion from one proportional gauge length to another proportional gauge
length

Simple multiplying factors based on the formula are used for such conversions, and the relationships

between a number of the more widely used proportional gauge lengths are given in Table 1. Detailed

conversions of elongations obtained on 4 S to 56, 5 S are given in Table 2.
0 0
Table 1 — Conversion factors: Proportional gauge length
Factor for conversion to:
Conversion
from:
4d 5d 8d
4 S 56, 5 S 81, 6 S 11,3 S
0 0 0 0
1,000 0,957 0,931 0,876 0,985 0,957 0,902
4 S
1,045 1,000 0,954 0,916 1,029 1,000 0,942
56, 5 S
1,095 1,048 1,000 0,959 1,078 1,048 1,987
81, 6 S
1,141 1,092 1,042 1,000 1,124 1,092 1,029
11,3 S
4d 1,015 0,972 0,928 0,890 1,000 0,972 0,916
5d 1,045 1,000 0,954 0,916 1,029 1,000 0,942
8d 1,109 1,061 1,013 0,972 1,092 1,062 1,000

Table 2 — Elongation values on 56, 5 S corresponding to those obtained on 4 S gauge

0 0
length
Actual elonga-
Corresponding elongation (%) on 56, 5 S
tion (%)
measured on
0 1 2 3 4 5 6 7 8 9
4 S
10 10 11 11 12 13 14 15 16 17 18
20 19 20 21 22 23 24 25 26 27 28
30 29 30 31 32 33 33 34 35 36 37
40 38 39 40 41 42 43 44 45 46 47
50 48 49 50 51 52 53 54 55 56 56
Factor 0,957. Values rounded to nearest whole number.
7 Conversion from one non-proportional gauge length to another non-
proportional gauge length for test pieces of equal cross-sectional area

The conversion of elongation values of different fixed gauge lengths on test pieces of equal cross-

sectional area are also made by simple factors. Conversion factors for gauge lengths of 50, 80, 100 and

200 mm are given in Table 3.
Table 3 — Conversion factors : Non-proportional gauge length
Factor for conversion to:
Conversion from:
50 mm 80 mm 100 mm 200 mm
50 mm 1,000 0,942 0,916 0,839
80 mm 1,062 1,000 0,972 0,890
100 mm 1,092 1,029 1,000 0,916
200 mm 1,193 1,123 1,092 1,000
Provided cross-sectional areas are the same.
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oSIST prEN ISO 2566-2:2021
ISO/FDIS 2566-2:2021(E)
8 Conversion from a non-proportional gauge length to another non-proportional
gauge length for test pieces of different cross-sectional areas

It is preferable for this calculation to be made in two stages with an initial conversion to 56, 5 S .

EXAMPLE

Elongation of 24 % on 200 mm for a 40 mm x 15 mm test piece in terms of equivalent on a

30 mm x 10 mm test piece with gauge lengths equal to 200 mm, 100 mm and 500 mm.
24 x 1/0,957 = 25,1 % on 56, 5 S (see Table 3).
25,1 x 0,916 = 23,0 % on 30 mm x 10 mm with 200 mm gauge length
25,1 x 1,000 = 25,1 % on 30 mm x 10 mm with 100 mm gauge length
25,1 x 1,093 = 27,4 % on 30 mm x 10 mm with 50 mm gauge length

Elongation on other proportional gauge lengths can be obtained by using the factors given in Table 1.

9 Conversion from a proportional gauge length to a non-proportional gauge
length
9.1 General

The conversion factors are variable according to the cross-sectional area of the non-proportional test

piece. Table 4 gives the multiplying factors for conversion from elongation on 56, 5 S to the equivalent

on fixed gauge lengths of 50 mm, 80 mm, 100 mm and 200 mm for a range of cross-sectional areas. For

conversions in the reverse direction, i.e. elongation on a fixed gauge length to the equivalent of 56, 5 S

the reciprocal of the factors is used.
EXAMPLE

— Elongation of 20 % on 56, 5 S is equivalent to 20 x 1,046 = 20,9 % on a 25 mm wide test

piece of 6 mm thickness with a 50 mm gauge length (see Table 3).

From the example shown, it will be seen that conversions involving other proportional gauge lengths

can be obtained by prior or subsequent use of the factors shown in Table 1.
9.2 Conversion factors from 56, 5 S to non-proportional gauge length
Factors shown under “non-proportional gauge length” give the value of
0,127
 
12, 5
 
 

To convert from values on a gauge length of 56, 5 S to a non-proportional gauge length, multiply by

the appropriate factor.

To convert from values on a non-proportional gauge length to 56, 5 S divide by the appropriate

factor.
See also Figures 1 and 2.
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oSIST prEN ISO 2566-2:2021
ISO/FDIS 2566-2:2021(E)
Table 4 — Conversion factors from 56, 5 S to non-proportional gauge lengths
Cross sectional
Factor for non-proportional gauge length of:
area of test piece:
mm 200 mm 100 mm 80 mm 50 mm
5 0,706 0,771 0,794 0,842
10 0,738 0,806 0,829 0,880
15 0,757 0,827 0,851 0,903
20 0,771 0,842 0,867 0,920
25 0,782 0,854 0,879 0,933
30 0,792 0,864 0,889 0,944
35 0,779 0,873 0,898 0,953
40 0,806 0,880 0,906 0,961
45 0,812 0,887 0,912 0,969
50 0,818 0,893 0,919 0,975
55 0,823 0,898 0,924 0,981
60 0,827 0,903 0,929 0,986
70 0,835 0,912 0,938 0,996
80 0,842 0,920 0,946 1,005
90 0,849 0,927 0,953 1,012
100 0,854 0,933 0,960 1,019
110 0,860 0,939 0,966 1,025
120 0,864 0,944 0,971 1,031
130 0,869 0,949 0,976 1,036
140 0,873 0,953 0,981 1,041
150 0,877 0,957 0,985 1,045
160 0,880 0,961 0,989 1,050
170 0,884 0,965 0,993 1,054
180 0,887 0,969 0,996 1,058
190 0,890 0,972 1,000 1,061
200 0,893 0,975 1,003 1,065
210 0,896 0,978 1,006 1,068
220 0,898 0,981 1,009 1,071
230 0,901 0,984 1,012 1,074
240 0,903 0,986 1,015 1,077
250 0,906 0,989 1,017 1,080
260 0,908 0,991 1,020 1,083
270 0,910 0,994 1,022 1,085
280 0,912 0,996 1,025 1,088
290 0,914 0,998 1,027 1,090
300 0,916 1,000 1,029 1,093
310 0,918 1,003 1,031 1,095
320 0,920 1,005 1,033 1,097
330 0,922 1,007 1,035 1,099
340 0,923 1,008 1,037 1,101
350 0,925 1,010 1,039 1,103
360 0,927 1,012 1,041 1,105
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oSIST prEN ISO 2566-2:2021
ISO/FDIS 2566-2:2021(E)
Table 4 (continued)
Cross sectional
Factor for non-proportional gauge length of:
area of test piece:
mm 200 mm 100 mm 80 mm 50 mm
370 0,928 1,014 1,043 1,107
380 0,930 1,016 1,045 1,109
390 0,932 1,017 1,047 1,111
400 0,933 1,019 1,048 1,113
410 0,935 1,021 1,050 1,114
420 0,936 1,022 1,051 1,116
430 0,937 1,024 1,053 1,118
440 0,939 1,025 1,055 1,119
450 0,940 1,027 1,056 1,121
460 0,941 1,028 1,058 1,123
470 0,943 1,029 1,059 1,124
480 0,944 1,031 1,060 1,126
490 0,945 1,032 1,062 1,127
500 0,946 1,033 1,063 1,129
550 0,952 1,040 1,070 1,135
600 0,957 1,045 1,076 1,142
650 0,962 1,051 1,081 1,148
700 0,967 1,056 1,086 1,153
750 0,971 1,060 1,091 1,158
800 0,975 1,065 1,095 1,163
850 0,979 1,069 1,100 1,167
900 0,982 1,073 1,104 1,171
950 0,986 1,076 1,107 1,176
1 000 0,989 1,080 1,111 1,179
1 050 0,992 1,083 1,114 1,183
1 100 0,995 1,087 1,118 1,187
1 150 0,998 1,090 1,121 1,190
1 200 1,000 1,093 1,124 1,193
1 250 1,003 1,095 1,127 1,196
1 300 1,006 1,098 1,130 1,199
1 350 1,008 1,101 1,132 1,202
1 400 1,010 1,103 1,135 1,205
1 450 1,013 1,106 1,138 1,208
1 500 1,015 1,108 1,140 1,210
1 550 1,017 1,110 1,142 1,213
1 600 1,019 1,113 1,145 1,215
1 650 1,021 1,115 1,147 1,217
1 700 1,023 1,117 1,149 1,220
1 750 1,025 1,119 1,151 1,222
1 800 1,027 1,121 1,153 1,224
1 850 1,028 1,123 1,155 1,226
1 900 1,030 1,125 1,157 1,228
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oSIST prEN ISO 2566-2:2021
ISO/FDIS 2566-2:2021(E)
Table 4 (continued)
Cross sectional
Factor for non-proportional gauge length of:
area of test piece:
mm 200 mm 100 mm 80 mm 50 mm
1 950 1,032 1,127 1,159 1,230
2 000 1,033 1,129 1,161 1,232
2 050 1,035 1,130 1,163 1,234
2 100 1,037 1,132 1,165 1,236
2 150 1,038 1,134 1,166 1,238
2 200 1,040 1,135 1,168 1,240
2 250 1,041 1,137 1,170 1,242
2 300 1,043 1,139 1,171 1,243
2 350 1,044 1,140 1,173 1,245
2 400 1,045 1,142 1,175 1,247
2 450 1,047 1,143 1,176 1,248
2 500 1,048 1,145 1,178 1,250
2 550 1,050 1,146 1,179 1,252
2 600 1,051 1,148 1,181 1,253
2 650 1,052 1,149 1,182 1,255
2 700 1,053 1,150 1,183 1,256
2 750 1,055 1,152 1,185 1,258
2 800 1,056 1,153 1,186 1,259
2 850 1,057 1,154 1,187 1,260
2 900 1,058 1,156 1,189 1,262
2 950 1,059 1,157 1,190 1,263
3 000 1,060 1,158 1,191 1,265
9.3 Conversion factors from 4 S to non-proportional gauge length
Factors shown under “non-proportional gauge length” give the value of
0,127
 
11, 9
 
 

To convert from values on a gauge length of 4 S to a non-proportional gauge length, multiply by the

appropriate factor.

To convert from values on a non-proportional gauge length to 4 S , divide by the appropriate factor.

See also Figures 3 and 4.
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oSIST prEN ISO 2566-2:2021
ISO/FDIS 2566-2:2021(E)
Table 5 — Conversion factors from 4 S to non-proportional gauge length
Cross sectional
Factor for non-proportional gauge length of:
area of test piece:
mm 200 mm 100 mm 80 mm 50 mm
5 0,673 0,734 0,756 0,802
10 0,703 0,767 0,790 0,838
15 0,721 0,787 0,810 0,860
20 0,734 0,802 0,825 0,876
25 0,745 0,813 0,837 0,888
30 0,754 0,823 0,847 0,899
35 0,761 0,831 0,855 0,907
40 0,767 0,838 0,862 0,915
45 0,773 0,844 0,869 0,922
50 0,778 0,850 0,874 0,928
55 0,783 0,855 0,880 0,934
60 0,787 0,860 0,885 0,939
70 0,795 0,868 0,893 0,948
80 0,802 0,876 0,901 0,956
90 0,808 0,882 0,908 0,964
100 0,813 0,888 0,914 0,970
110 0,818 0,894 0,919 0,976
120 0,823 0,899 0,924 0,981
130 0,827 0,903 0,929 0,986
140 0,831 0,907 0,934 0,991
150 0,835 0,911 0,938 0,995
160 0,838 0,915 0,941 0,999
170 0,841 0,919 0,945 1,003
180 0,844 0,922 0,949 1,007
190 0,847 0,925 0,952 1,010
200 0,850 0,928 0,955 1,014
210 0,853 0,931 0,958 1,017
220 0,855 0,934 0,961 1,020
230 0,858 0,937 0,963 1,023
240 0,860 0,939 0,966 1,025
250 0,862 0,941 0,969 1,028
260 0,864 0,944 0,971 1,031
270 0,866 0,946 0,973 1,033
280 0,868 0,948 0,976 1,036
290 0,870 0,950 0,978 1,038
300 0,872 0,952 0,980 1,040
310 0,874 0,954 0,982 1,042
320 0,876 0,956 0,984 1,044
330 0,877 0,958 0,986 1,046
340 0,879 0,960 0,988 1,048
8 © ISO 2021 – All rights reserved
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oSIST prEN ISO 2566-2:2021
ISO/FDIS 2566-2:2021(E)
Table 5 (continued)
Cross sectional
Factor for non-proportional gauge length of:
area of test piece:
mm 200 mm 100 mm 80 mm 50 mm
350 0,881 0,962 0,989 1,050
360 0,882 0,964 0,991 1,052
370 0,884 0,965 0,993 1,054
380 0,885 0,967 0,995 1,056
390 0,887 0,968 0,996 1,058
400 0,888 0,970 0,998 1,059
410 0,890 0,972 0,999 1,061
420 0,891 0,973 1,001 1,063
430 0,892 0,974 1,002 1,064
440 0,894 0,976 1,004 1,066
450 0,895 0,977 1,005 1,067
460 0,896 0,979 1,007 1,069
470 0,897 0,980 1,008 1,070
480 0,899 0,981 1,010 1,072
490 0,900 0,983 1,011 1,073
500 0,901 0,984 1,012 1,074
550 0,906 0,990 1,018 1,081
600 0,911 0,995 1,024 1,087
650 0,916 1,000 1,029 1,092
700 0,920 1,005 1,034 1,098
750 0,924 1,010 1,039 1,102
800 0,928 1,014 1,043 1,107
850 0,932 1,018 1,047 1,111
900 0,935 1,021 1,051 1,115
950 0,938 1,025 1,054 1,119
1 000 0,941 1,028 1,058 1,123
1 050 0,944 1,031 1,061 1,126
1 100 0,947 1,034 1,064 1,130
1 150 0,950 1,037 1,067 1,133
1 200 0,952 1,040 1,070 1,136
1 250 0,955 1,043 1,073 1,139
1 300 0,957 1,045 1,075 1,142
1 350 0,960 1,048 1,078 1,144
1 400 0,962 1,050 1,081 1,147
1 450 0,964 1,053 1,083 1,150
1 500 0,966 1,055 1,085 1,152
1 550 0,968 1,057 1,088 1,154
1 600 0,970 1,059 1,090 1,157
1 650 0,972 1,061 1,092 1,159
1 700 0,974 1,063 1,094 1,161
1 750 0,976 1,065 1,096 1,163
1 800 0,977 1,067 1,098 1,165
© ISO 2021 – All rights reserved 9
---------------------- Page: 17 ----------------------
oSIST prEN ISO 2566-2:2021
ISO/FDIS 2566-2:2021(E)
Table 5 (continued)
Cross sectional
Factor for non-proportional gauge length of:
area of test piece:
mm 200 mm 100 mm 80 mm 50 mm
1 850 0,979 1,069 1,100 1,167
1 900 0,981 1,071 1,102 1,169
1 950 0,982 1,073 1,103 1,171
2 000 0,984 1,074 1,105 1,173
2 050 0,985 1,076 1,107 1,175
2 100 0,987 1,078 1,109 1,177
2 150 0,988 1,079 1,110 1,179
2 200 0,990 1,081 1,112 1,180
2 250 0,991 1,082 1,114 1,182
2 300 0,993 1,084 1,115 1,184
2 350 0,994 1,085 1,117 1,185
2 400 0,995 1,087 1,118 1,187
2 450 0,997 1,088 1,120 1,188
2 500 0,998 1,090 1,121 1,190
2 550 0,999 1,091 1,122 1,191
2 600 1,000 1,092 1,124 1,193
2 650 1,002 1,094 1,125 1,194
2 700 1,003 1,095 1,127 1,196
2 750 1,004 1,096 1,128 1,197
2 800 1,005 1,098 1,129 1,199
2 850 1,006 1,099 1,130 1,200
2 900 1,007 1,100 1,132 1,201
2 950 1,008 1,101 1,133 1,203
3 000 1,010 1,102 1,134 1,204
9.4 Elongation values

Tables 6 to 9 can be used for conversion to 56, 5 S , whilst Tables 14 to 17 can be used to obtain

elongations on fixed gauge lengths corresponding to 56, 5 S . Similarly, Tables 10 to 13 can be used

for conversion to 4 S and Tables 18 to 21 for elongations on fixed gauge lengths corresponding to

4 S .

Table 6 — Elongation values on 56, 5 S corresponding to those obtained on 50 mm gauge

length
Actual elon-

Corresponding elongation (%) on 56, 5 S gauge length if cross-sectional area in square millimetres is:

gation (%) on
50 mm gauge
length

5 10 20 40 60 80 100 150 200 250 300 400 500 600 700 800 900 1 000 1 200 1 500 2 000 2 500

10 12 11 11 10 10 10 10 10 9 9 9 9 9 9 9 9 9 8 8 8 8 8
11 13 12 12 11 11 11 11 11 10 10 10 10 10 10 10 9 9 9 9 9 9 9
12 14 14 13 12 12 12 12 11 11 11 11 11 11 11 10 10 10 10 10 10 10 10
13 15 15 14 14 13 13 13 12 12 12 12 12 12 11 11 11 11 11 11 11 11 10
Rounded up to the nearest whole number.
10 © ISO 2021 – All rights reserved
---------------------- Page: 18 ----------------------
oSIST prEN ISO 2566-2:2021
ISO/FDIS 2566-2:2021(E)
Table 6 (continued)
Actual elon-

Corresponding elongation (%) on 56, 5 S gauge length if cross-sectional area in square millimetres is:

gation (%) on
50 mm gauge
length

5 10 20 40 60 80 100 150 200 250 300 400 500 600 700 800 900 1 000 1 200 1 500 2 000 2 500

14 17 16 15 15 14 14 14 13 13 13 13 13 12 12 12 12 12 12 12 12 11 11
15 18 17 16 16 15 15 15 14 14 14 14 13 13 13 13 13 13 13 13 12 12 12
16 19 18 17 17 16 16 16 15 15 15 15 14 14 14 14 14 14 14 13 13 13 13
17 20 19 18 18 17 17 17 16 16 16 16 15 15 15 15 15 15 14 14 14 14 14
18 21 20 20 19 18 18 18 17 17 17 16 16 16 16 16 15 15 15 15 15 15 14
19 23 22 21 20 19 19 19 18 18 18 17 17 17 17 16 16 16 16 16 16 15 15
20 24 23 22 21 20 20 20 19 19 19 18 18 18 18 17 17 17 17 17 17 16 16
21 25 24 23 22 21 21 21 20 20 19 19 19 19 18 18 18 18 18 18 17 17 17
22 26 25 24 23 22 22 22 21 21 20 20 20 19 19 19 19 19 19 18 18 18 18
23 27 26 25 24 23 23 23 22 22 21 21 21 20 20 20 20 20 20 19 19 19 18
24 28 27 26 25 24 24 24 23 23 22 22 22 21 21 21 21 20 20 20 20 19 19
25 30 28 27 26 25 25 25 24 23 23 23 22 22 22 22 22 21 21 21 21 20 20
26 31 30 28 27 26 26 26 25 24 24 24 23 23 23 23 22 22 22 22 21 21 21
27 32 31 29 28 27 27 26 26 25 25 25 24 24 24 23 23 23 23 23 22 22 22
28 33 32 30 29 28 28 27 27 26 26 26 25 25 25 24 24 24 24 23 23 23 22
29 34 33 32 30 29 29 28 28 27 27 27 26 26 25 25 25 25 25 24 24 24 23
30 36 34 33 31 30 30 29 29 28 28 27 27 27 26 26 26 26 25 25 25 24 24
31 37 35 34 32 31 31 30 30 29 29 28 28 27 27 27 27 26 26 26 26 25 25
32 38 36 35 33 32 32 31 31 30 30 29 29 28 28 28 28 27 27 27 26 26 26
33 39 37 36 34 33 33 32 32 31 31 30 30 29 29 29 28 28 28 28 27 27 26
34 40 39 37 35 34 34 33 33 32 31 31 31 30 30 29 29 29 29 28 28 28 27
35 42 40 38 36 35 35 34 33 33 32 32 31 31 31 30 30 30 30 2
...