SIST EN ISO 2566-2:2022

SLOVENSKI STANDARD
01-april-2022
Nadomešča:
SIST EN ISO 2566-2:2000
Jekla - Pretvarjanje vrednosti raztezkov - 2. del: Avstenitna jekla (ISO 2566-2:2021,
popravljena različica 2022-05)
Steel - Conversion of elongation values - Part 2: Austenitic steels (ISO 2566-2:2021,
Corrected version 2022-05)
Stahl - Umrechnung von Bruchdehnungswerten - Teil 2: Austenitische Stähle (ISO 2566-
2:2021, korrigierte Fassung 2022-05)
Acier - Conversion des valeurs d'allongement - Partie 2: Aciers austénitiques (ISO 2566-
2:2021, Version corrigée 2022-05)
Ta slovenski standard je istoveten z: EN ISO 2566-2:2021
ICS:
77.040.10 Mehansko preskušanje kovin Mechanical testing of metals
77.080.20 Jekla Steels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 2566-2
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2021
EUROPÄISCHE NORM
ICS 77.040.10 Supersedes EN ISO 2566-2:1999
English Version
Steel - Conversion of elongation values - Part 2: Austenitic
steels (ISO 2566-2:2021, Corrected version 2022-05)
Acier - Conversion des valeurs d'allongement - Partie Stahl - Umrechnung von Bruchdehnungswerten - Teil
2: Aciers austénitiques (ISO 2566-2:2021, Version 2: Austenitische Stähle (ISO 2566-2:2021, korrigierte
corrigée 2022-05) Fassung 2022-05)
This European Standard was approved by CEN on 15 November 2021.

This European Standard was corrected and reissued by the CEN-CENELEC Management Centre on 29 June 2022.

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 NORMALISATIO N

EUROPÄISCHES KOMITEE FÜR NORMUN G

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 ISO 2566-2:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 2566-2:2021) has been prepared by Technical Committee ISO/TC 17 "Steel" in
collaboration with Technical Committee CEN/TC 459/SC 1 “Test methods for steel (other than chemical
analysis)” the secretariat of which is held by AFNOR.
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 June 2022, and conflicting national standards shall be
withdrawn at the latest by June 2022.
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 ISO 2566-2:1999.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 2566-2:2021, Corrected version 2022-05 has been approved by CEN as EN ISO 2566-
2:2021 without any modification.

INTERNATIONAL ISO
STANDARD 2566-2
Second edition
2021-12
Corrected version
2022-06
Steel — Conversion of elongation
values —
Part 2:
Austenitic steels
Acier — Conversion des valeurs d'allongement —
Partie 2: Aciers austénitiques
Reference number
ISO 2566-2:2021(E)
ISO 2566-2:2021(E)
© 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: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 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
iii
ISO 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 2566-2:1984), of which it constitutes a
minor revision. The changes 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 9 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.
This corrected version of ISO 2566-2:2021 incorporates the following corrections:
— two of the values given in Table 1 were incorrect: the value "0,931" was replaced with "0,913" and
the value "1,987" was replaced with "0,987".
iv
ISO 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.
v
INTERNATIONAL STANDARD ISO 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/mm 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 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/
3.1.1
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 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
r
d Diameter of test piece
L Original gauge length
S
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
 
S
AA=12, 5 (1)
 
r
L
 0 
where
A is the required elongation on gauge length L ;
r 0
A
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
 
S
AA=11, 9 (2)
 
r
L
 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.
ISO 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 0,913 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 0,987
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
a
Table 2 — Elongation values on 56, 5 S corresponding to those obtained on 4 S gauge
0 0
length
Actual elongation
Corresponding elongation (%) on 56, 5 S
(%) 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
a
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.
a
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
a
Provided cross-sectional areas are the same.
ISO 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 50 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
 
S
12, 5
 
L
 
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.
ISO 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
ISO 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
ISO 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
 
S
11, 9
 
L
 
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.
ISO 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
ISO 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 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 .
ISO 2566-2:2021(E)
a
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
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 29 29 28 28
36 43 41 39 37 36 36 35 34 34 33 33 32 32 32 31 31 31 31 30 30 29 29
37 44 42 40 38 38 37 36 35 35 34 34 33 33 32 32 32 32 31 31 31 30 30
38 45 43 41 40 39 38 37 36 36 35 35 34 34 33 33 33 32 32 32 31 31 30
39 46 44 42 41 40 39 38 37 37 36 36 35 35 34 34 34 33 33 33 32 32 31
40 47 45 43 43 41 40 39 38 38 37 37 36 35 35 35 34 34 34 34 33 32 32
41 49 47 45 43 42 41 40 39 39 38 38 37 36 36 36 35 35 35 34 34 33 33
42 50 48 46 44 43 42 41 40 39 39 38 38 37 37 36 36 36 36 35 35 34 34
43 51 49 47 45 44 43 42 41 40 40 39 39 38 38 37 37 37 36 36 36 35 34
44 52 50 48 46 45 44 43 42 41 41 40 40 39 39 38 38 38 37 37 36 36 35
45 53 51 49 47 46 45 44 43 42 42 41 40 40 39 39 39 38 38 38 37 37 36
46 55 52 50 48 47 46 45 44 43 43 42 41 41 40 40 40 39 39 39 38 37 37
47 56 53 51 49 48 47 46 45 44 44 43 42 42 41 41 40 40 40 39 39 38 38
a
Rounded up to the nearest whole number.
ISO 2566-2:2021(E)
a
Table 7 — Elongation values on 56, 5 S corresponding to those obtained on 80 mm gauge
length
Actual elon-
Corresponding elongation (%) on 56, 5 S gauge length if cross-sectional area in square millimetres is:
gation (%) on
80 mm gauge
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
length
10 13 12 12 11 11 11 10 10 10 10 10 10 9 9 9 9 9 9 9 9 9 8
11 14 13 13 12 12 12 12 11 11 11 11 10 10 10 10 10 10 10 10 10 9 9
12 15 14 14 13 13 13 13 12 12 12 12 11 11 11 11 11 11 11 11 11 10 10
13 16 16 15 14 14 14 14 13 13 13 13 12 12 12 12 12 12 12 12 11 11 11
14 18 17 16 15 15 15 15 14 14 14 14 13 13 13 13 13 13 13 12 12 12 12
15 19 18 17 17 16 16 16 15 15 15 15 14 14 14 14 14 14 14 13 13 13 13
16 20 19 18 18 17 17 17 16 16 16 16 15 15 15 15 15 14 14 14 14 14 14
17 21 20 20 19 18 18 18 17 17 17 17 16 16 16 16 16 15 15 15 15 15 14
18 23 22 21 20 19 19 19 18 18 18 17 17 17 17 17 16 16 16 16 16 16 15
19 24 23 22 21 20 20 20 19 19 19 18 18 18 18 17 17 17 17 17 17 16 16
20 25 24 23 22 22 21 21 20 20 20 19 19 19 19 18 18 18 18 18 18 17 17
21 26 25 24 23 23 22 22 21 21 21 20 20 20 20 19 19 19 19 19 18 18 18
22 28 27 25 24 24 23 23 22 22 22 21 21 21 20 20 20 20 20 20 19 19 19
23 29 28 27 25 25 24 24 23 23 23 22 22 22 21 21 21 21 21 20 20 20 20
24 30 29 28 27 26 25 25 24 24 24 23 23 23 22 22 22 22 22 21 21 21 20
25 32 30 29 28 27 26 26 25 25 25 24 24 24 23 23 23 23 23 22 22 22 21
26 33 31 30 29 28 27 27 26 26 26 25 25 24 24 24 24 24 23 23 23 22 22
27 34 33 31 30 29 29 28 27 27 27 26 26 25 25 25 25 24 24 24 24 23 23
28 35 34 32 31 30 30 29 28 28 28 27 27 26 26 26 26 25 25 25 25 24 24
29 37 35 33 32 31 31 30 29 29 29 28 28 27 27 27 26 26 26 26 25 25 25
30 38 36 35 33 32 32 31 30 30 29 29 29 28 28 28 27 27 27 27 26 26 25
31 39 37 36 34 33 33 32 31 31 30 30 30 29 29 29 28 28 28 28 27 27 26
32 40 39 37 35 34 34 33 32 32 31 31 31 30 30 29 29 29 29 28 28 28 27
33 42 40 38 36 36 35 34 34 33 32 32 31 31 31 30 30 30 30 29 29 28 28
34 43 41 39 38 37 36 35 35 34 33 33 32 32 32 31 31 31 31 30 30 29 29
35 44 42 40 39 38 37 36 36 35 34 34 33 33 33 32 32 32 32 31 31 30 30
36 45 43 42 40 39 38 38 37 36 35 35 34 34 33 33 33 33 32 32 32 31 31
37 47 45 43 41 40 39 39 38 37 36 36 35 35 34 34 34 34 33 33 32 32 31
38 48 46 44 42 41 40 40 39 38 37 37 36 36 35 35 35 34 34 34 33 33 32
39 49 47 45 43 42 41 41 40 39 38 38 37 37 36 36 36 35 35 35 34 34 33
40 50 48 46 44 43 42 42 41 40 39 39 38 38 37 37 37 36 36 36 35 34 34
41 52 49 47 45 44 43 43 42 41 40 40 39 39 38 38 37 37 37 36 36 35 35
42 53 51 48 46 45 44 44 43 42 41 41 40 40 39 39 38 38 38 37 37 36 36
43 54 52 50 47 46 45 45 44 43 42 42 41 40 40 40 39 39 39 38 38 37 37
44 55 53 51 49 47 46 46 45 44 43 43 42 41 41 41 40 40 40 39 39 38 37
45 57 54 52 50 48 48 47 46 45 44 44 43 42 42 41 41 41 41 40 39 39 38
46 58 55 53 51 50 49 48 47 46 45 45 44 43 43 42 42 42 41 41 40 40 39
47 59 57 54 52 51 50 49 48 47 46 46 45 44 44 43 43 43 42 42 41 40 40
a
Rounded up to the nearest whole number.
ISO 2566-2:2021(E)
a
Table 8 — Elongation values on 56, 5 S corresponding to those obtained on 100 mm gauge
length
Actual elon-
Corresponding elongation (%) on 56, 5 S gauge length if cross-sectional area in square millimetres is:
gation (%)
on 100 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 13 12 12 11 11 11 11 10 10 10 10 10 10 10 9 9 9 9 9 9 9 9
11 14 14 13 12 12 12 12 11 11 11 11 11 11 11 10 10 10 10 10 10 10 10
12 16 15 14 14 13 13 13 13 12 12 12 12 12 11 11 11 11 11 11 11 11 10
13 17 16 15 15 14 14 14 14 13 13 13 13 13 12 12 12 12 12 12 12 12 11
14 18 17 17 16 15 15 15 15 14 14 14 14 14 13 13 13 13 13 13 13 12 12
15 19 19 18 17 17 16 16 16 15 15 15 15 15 14 14 14 14 14 14 14 13 13
16 21 20 19 18 18 17 17 17 16 16 16 16 15 15 15 15 15 15 15 14 14 14
17 22 21 20 19 19 18 18 18 17 17 17 17 16 16 16 16 16 16 16 15 15 15
18 23 22 21 20 20 20 19 19 18 18 18 18 17 17 17 17 17 17 16 16 16 16
19 25 24 23 22 21 21 20 20 19 19 19 19 18 18 18 18 18 18 17 17 17 17
20 26 25 24 23 22 22 21 21 21 20 20 20 19 19 19 19 19 19 18 18 18 17
21 27 26 25 24 23 23 23 22 22 21 21 21 20 20 20 20 20 19 19 19 19 18
22 29 27 26 25 24 24 24 23 23 22 22 22 21 21 21 21 21 20 20 20 19 19
23 30 29 27 26 25 25 25 24 24 23 23 23 22 22 22 22 21 21 21 21 20 20
24 31 30 28 27 27 26 26 25 25 24 24 24 23 23 23 23 22 22 22 22 21 21
25 32 31 30 28 28 27 27 26 26 25 25 25 24 24 24 23 23 23 23 23 22 22
26 34 32 31 30 29 28 28 27 27 26 26 26 25 25 25 24 24 24 24 23 23 23
27 35 33 32 31 30 29 29 28 28 27 27 26 26 26 26 25 25 25 25 24 24 24
28 36 35 33 32 31 30 30 29 29 28 28 27 27 27 27 26 26 26 26 25 25 24
29 38 36 34 33 32 32 31 30 30 29 29 28 28 28 27 27 27 27 27 26 26 25
30 39 37 36 34 33 33 32 31 31 30 30 29 29 29 28 28 28 28 27 27 27 26
31 40 38 37 35 34 34 33 32 32 31 31 30 30 30 29 29 29 29 28 28 27 27
32 41 40 38 36 35 35 34 33 33 32 32 31 31 31 30 30 30 30 29 29 28 28
33 43 41 39 37 37 36 35 34 34 33 33 32 32 32 31 31 31 31 30 30 29 29
34 44 42 40 39 38 37 36 36 35 34 34 33 33 33 32 32 32 31 31 31 30 30
35 45 43 42 40 39 38 38 37 36 35 35 34 34 33 33 33 33 32 32 32 31 31
36 47 45 43 41 40 39 39 38 37 36 36 35 35 34 34 34 34 33 33 32 32 31
37 48 46 44 42 41 40 40 39 38 37 37 36 36 35 35 35 34 34 34 33 33 32
38 49 47 45 43 42 41 41 40 39 38 38 37 37 36 36 36 35 35 35 34 34 33
39 51 48 46 44 43 42 42 41 40 39 39 38 38 37 37 37 36 36 36 35 35 34
40 52 50 47 45 44 43 43 42 41 40 40 39 39 38 38 38 37 37 37 36 35 35
41 53 51 49 47 45 45 44 43 42 41 41 40 40 39 39 39 38 38 38 37 36 36
42 54 52 50 48 46 46 45 44 43 42 42 41 41 40 40 39 39 39 38 38 37 37
43 56 53 51 49 48 47 46 45 44 43 43 42 42 41 41 40 40 40 39 39 38 38
44 57 55 52 50 49 48 47 46 45 44 44 43 43 42 42 41 41 41 40 40 39 38
45 58 56 53 51 50 49 48 47 46 46 45 44 44 43 43 42 42 42 41 41 40 39
46 60 57 55 52 51 50 49 48 47 47 46 45 45 44 44 43 43 43 42 42 41 40
47 61 58 56 53 52 51 50 49 48 48 47 46 45 45 45 44 44 44 43 42 42 41
a
Rounded up to the nearest whole number.
ISO 2566-2:2021(E)
a
Table 9 — Elongation values on 56, 5 S corresponding to those obtained on 200 mm gauge
length
Actual elon-
Corresponding elongation (%) on 56, 5 S gauge length if cross-sectional area in square millimetres is:
gation (%)
on 200 mm
gauge
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
length
10 14 14 13 12 12 12 12 11 11 11 11 11 11 10 10 10 10 10 10 10 10 10
11 16 15 14 14 13 13 13 13 12 12 12 12 12 11 11 11 11 11 11 11 11 10
12 17 16 16 15 15 14 14 14 13 13 13 13 13 13 12 12 12 12 12 12 12 11
13 18 18 17 16 16 15 15 15 15 14 14 14 14 14 13 13 13 13 13 13 13 12
14 20 19 18 17 17 17 16 16 16 15 15 15 15 15 14 14 14 14 14 14 14 13
15 21 20 19 19 18 18 18 17 17 17 16 16 16 16 16 15 15 15 15 15 15 14
16 23 22 21 20 19 19 19 18 18 18 17 17 17 17 17 16 16 16 16 16 15 15
17 24 23 22 21 21 20 20 19 19 19 19 18 18 18 18 17 17 17 17 17 16 16
18 25 24 23 22 22 21 21 21 20 20 20 19 19 19 19 18 18 18 18 18 17 17
19 27 26 25 24 23 23 22 22 21 21 21 20 20 20 20 19 19 19 19 19 18 18
20 28 27 26 25 24 24 23 23 22 22 22 21 21 21 21 21 20 20 20 20 19 19
21 30 28 27 26 25 25 25 24 24 23 23 23 22 22 22 22 21 21 21 21 20 20
22 31 30 29 27 27 26 26 25 25 24 24 24 23 23 23 23 22 22 22 22 21 21
23 33 31 30 29 28 27 27 26 26 25 25 25 24 24 24 24 23 23 23 23 22 22
24 34 33 31 30 29 28 28 27 27 27 26 26 25 25 25 25 24 24 24 24 23 23
25 35 34 32 31 30 30 29 29 28 28 27 27 26 26 26 26 25 25 25 25 24 24
26 37 35 34 32 31 31 30 30 29 29 28 28 27 27 27 27 26 26 26 26 25 25
27 38 37 35 33 33 32 32 31 30 30 29 29 29 28 28 28 27 27 27 27 26 26
28 40 38 36 35 34 33 33 32 31 31 31 30 30 29 29 29 29 28 28 28 27 27
29 41 39 38 36 35 34 34 33 32 32 32 31 31 30 30 30 30 29 29 29 28 28
30 42 41 39 37 36 36 35 34 34 33 33 32 32 31 31 31 31 30 30 30 29 29
31 44 42 40 38 37 37 36 35 35 34 34 33 33 32 32 32 32 31 31 31 30 30
32 45 43 41 40 39 38 37 36 36 35 35 34 34 33 33 33 33 32 32 32 31 31
33 47 45 43 41 40 39 39 38 37 36 36 35 35 34 34 34 34 33 33 33 32 31
34 48 46 44 42 41 40 40 39 38 38 37 36 36 36 35 35 35 34 34 34 33 32
35 50 47 45 43 42 42 41 40 39 39 38 38 37 37 36 36 36 35 35 34 34 33
36 51 49 47 45 44 43 42 41 40 40 39 39 38 38 37 37 37 36 36 35 35 34
37 52 50 48 46 45 44 43 42 41 41 40 40 39 39 38 38 38 37 37 36 36 35
38 54 51 49 47 46 45 44 43 43 42 41 41 40 40 39 39 39 38 38 37 37 36
39 55 53 51 48 47 46 46 44 44 43 43 42 41 41 40 40 40 39 39 38 38 37
40 57 54 52 50 48 47 47 46 45 44 44 43 42 42 41 41 41 40 40 39 39 38
41 58 56 53 51 50 49 48 47 46 45 45 44 43 43 42 42 42 41 41 40 40 39
42 59 57 54 52 51 50 49 48 47 46 46 45 44 44 43 43 43 42 42 41 41 40
43 61 58 56 53 52 51 50 49 48 47 47 46 45 45 44 44 44 43 43 42 42 41
44 62 60 57 55 53 52 51 50 49 49 48 47 46 46 46 45 45 44 44 43 43 42
45 64 61 58 56 54 53 53 51 50 50 49 48 48 47 47 46 46 46 45 44 44 43
46 65 62 60 57 56 55 54 52 52 51 50 49 49 48 48 47 47 47 46 45 45 44
47 67 64 61 58 57 56 55 54 53 52 51 50 50 49 49 48 48 48 47 46 45 45
a
Rounded up to the nearest whole number.
ISO 2566-2:2021(E)
a
Table 10 — Elongation values on 4 S corresponding to those obtained on 50 mm gauge
length
Actual elon-
Corresponding elongation (%) on 4 S gauge length if cross-sectional area in square millimetres is:
gation (%) on
50 mm gauge
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
length
10 12 12 11 11 11 10 10 10 10 10 10 9 9 9 9 9 9 9 9 9 9 8
11 14 13 13 12 12 11 11 11 11 11 11 10 10 10 10 10 10 10 10 10 9 9
12 15 14 14 13 13 13 12 12 12 12 12 11 11 11 11 11 11 11 11 10 10 10
13 16 16 15 14 14 14 13 13 13 13 12 12 12 12 12 12 12 12 11 11 11 11
14 17 17 16 15 15 15 14 14 14 14 13 13 13 13 13 13 13 12 12 12 12 12
15 19 18 17 16 16 16 15 15 15 15 14 14 14 14 14 14 13 13 13 13 13 13
16 20 19 18 17 17 17 16 16 16 16 15 15
...