Disclosure to Promote the Right To Information

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इ टरन ट म नक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to

in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the

made available to promote the timely dissemination of this information in an accurate manner to the public.

From the Old to the New IS 3803-2 (1989): Steel - Conversion of Elongation Values, Part 2: Austenitic steels [MTD 3: Mechanical Testing of Metals]!

1 इ टरन ट म नक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. ज न1 क अ+धक र, ज 1 क अ+धक र Mazdoor Kisan Shakti Sangathan The Right to Information, The Right to Live प0र 1 क छ ड न' 5 तरफ Jawaharlal Nehru Step Out From the Old to the New IS (1989): Steel - Conversion of Elongation Values, Part 2: Austenitic steels [MTD 3: Mechanical Testing of Metals]! न $ एक न' भ रत क +नम-ण Satyanarayan Gangaram Pitroda Invent a New India Using Knowledge! न एक ऐस खज न > ज कभ च0र य नहB ज सकत ह ह Bhartṛhari Nītiśatakam Knowledge is such a treasure which cannot be stolen

4 ,r!33802(part2):198) IS0 2556/2 : 1984 Indian Standard STEEL - CONVERSION OF ELONGATION VALUES PART 2 AUSTENITIC STEELS ( Second Revision ) UDC : BIS 1990 BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI June 1990 Price Group 11

5 IS3803( Part2) :1989 IS0 2566/p! : 1984 Indian.* Standard STEEL - CONVERSION OF ELONGATION VALUES 1 PART 2 AUSTENITIC STEELS ( Second Revision) NATIONAL FOREWORD This Indian Standard ( Part 2 ) ( Second Revision ), which is identical with IS0-2566/2 : 1984 Steel - Conversion of elongation values - Part 2 : Austenitic steels, issued by the International Organization for Standardization ( IS0 ), was adopted by the Bureau of Indian Standards on 24 November 1989 on the recommendations of the Mechanical Testing of Metals Sectional Committee ( MTD 3 ) and approval of the Metallurgical Engineering Division Council. IS 3803 was first published in 1961 and subsequently revised in, In this second revision, IS 3803 has been brought in line with IS0 2566, and has been issued in two parts identical to the two parts of ISC This Part 2 covers conversion of elongation values for austenitic steels while Part 1 covers Conversion of elongation values for carbon and low alloy steels. The text of IS0 standard has been approved as suitable for publication as Indian Standard without deviations. Certain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following : a) b) cl Wherever the words Jlnternational Standard appear, referring to this standard, they should be read as Indian Standard.. Wherever the words *IS appear, referring to this standard, they should be read as IS Comma (, ) has been used as a decimal marker while in Indian Standards, the current practice is to use point (. ) on the base line as the decimal marker. 1

6 As in the Original Standard, this Page is Intentionally Left Blank

7 IS 3S03( Pati2): 1989 IS0 256Si2 : Introduction These conversions are not applicable to Several, different gauge lengths are commonly in use for the determination of percentage elongation of steels in tensile testing. dxed gauge lengths of 50, 80, 100 and 200 mm are used; proportional gauge lengths of k &are also used for flat and round test pieces, where k may be one of a number of values, i.e. 4; 565;.8,16; and 11,3. The value 5,656 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 ITernational Standard which could be used to convert test results into values based on the different gauge lengths. This part of IS accordingly includes tables of convers?on 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. 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. a) told reduced steels; b) quenched and tempered steels; c) non-austenitic steels. Neither should they be used where the gauge length exceeds 25& or where the width to thickness ratio of the test piece exceeds 20. Care should be exercised in the case of strip under 3 mm thickness, as the index in the formula given in clause 4 increases with decreasing thickness; the value to be used shall be the subject of agreement between the customer and the supplier. 2 Symbols In this part of IS0 2566, the symbols shown in table l are used. Table 1 - List of symbols 1 Symbol 1 Description A 4 d La sn Percentage elongation on gauge length, Lo, after fracture, obtained on test Percentage elongation on a different gauge length, required by conversion Diameter of test piece Original gauge length Original cross-sktional area of test piece 1 Scope and field of application This part of IS specifies a method of converting room temperature percentage elongations after fracture obtained on various proportional and non-proportional gauge lengths to other gauge lengths. The formula (see clause 4) on which conversions are based is considered to be reliable when applied to austenitic stainless steels within the tensile strength range 450 to 756 N/m& and in the solution treated condition. 3 Definitions For the purpose of this part of IS0 2566, the following definitions apply: 3.1 gauge length: Any length of the parallel portion of the test piece used for measurement of strain. The ten; is hereafter used in this part of IS to denote the original gauge length, Lc, marked on the test piece for the determination of percentage elongation after fracture, A. 3

8 IS 3803 (Part2) IS : 1964 : proportional gauge length: A gauge length having a specified relation to the square root of the cross-sectional area, for example non-proportional gauge length: A gauge length not specifically related to the cross-sectional area of the test piece, usually expressed in a given dimension, for example 56 mm. 4 Basic formula The data contained in this part of IS are based on a formula obtained from a statistical assessment of international test results, which, in a simplified form, can be expressed as where A, = 1.25A A, is the required elongation on gauge length LO; A is the elongation on a gauge length of 5,65&which is the internationally accepted gauge length; So and Lo are defined in table 1. Expressed in terms of 46 the formula becomes 7 Conversion from a proportional gauge length to a non-proportional gauge length The conversion factors are variable according to the.crosssectional area of the non-proportional test piece. Table 4 gives the multiplying factors for conversion from elongation on 5,65&to the equivalent on fixed gauge lengths of 50,60, io0 and 209 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 5.65 &, the reciprocal of the factors is used. Example: Elongation of on 5,65 & 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 4). 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 2. Tables 7 to 10 can be used to obtain some of these conversions, whilst tables 15 to 18 can be used to obtain elongations on fixed gauge lengths corresponding to 5,656. Similarly, tables 11 to 14 can be used for conversion to 4 fi and tables 19 to 22 for elongations on fixed gauge lengths carresponding to 4 a where A is the elongation on a gauge length of 4fi. Tables 2 to 22 and figures l to 5 have been prepared on the basis of the above formulae. 5 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 2. Detailed conversions of elongations obtained on 4 & to are given in table 6. 6 Conversion from one non-proportions1 gauge length to another non-proportional gauge length for test pieces of equal crosssectional 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, 69, 109 and 2CKl mm are given in table 3. 6 Conversion from a non-proportionsr gauge length to another non-proportional gauge length for test pieces of different crosssectional areas It is preferable for this calculation to be made in two stages with an initial conversion to 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, 100, and 50 mm. 24 x l/o,957 = 25.1 % on 5,65& (see table 4) 25,l x 0,916 = 23,0 % on 90 mm x 10 mm with 200 mm gauge length 25,l x 1,066 = 25,l % on 90 mm x 10 mm with 100 mm gauge length 25,l x 1,099 = 27,4 % on 30 mm x 10 mm with 50 mm gauge length Elongation on other propodonal gauge lengths can be obtained by using the factors given in table 2. 4

9 IS 3803( Part2): 1989 IS0 2599! 2 : Use of figures 1 to 5 where K, and K2 designate the proportionality ratios of any two test pieces. 9.1 Figures 1 to 5 may be used as an alternative quick method to obtain elongation conversions. 9.2 Figures 1 to 4 may be used for c&versions between 5,65G and 50 mm, 5,656 and 200 mm, 4fi and 50 mm, and 4&and 200 mm gauge lengths, respectively. Example : To find the equivalent elongation on 5,55fic and 4 & to an elongation of 25 % on a 200 mm gauge length of a 25 mm x 12.5 mm test piece of cross-sectional area 312,5 mm2. The intersection of this.ordinate with the abscissa representing an elongation of.25 % on a 200 mm gauge length lies on the sloping line representing an elongation of 27,2 % on 5,55J!& on figure 2 and at a position relative to the sloping lines on figure 4 approximating to an elongation of 28,8 % on Figure 5 may be used for the calculation of all elongation conversions. The formula given in clause 4 may be rewritten as A2 =A, 5 0 K2 = A,;2 x A, 0,127 K2 = 2 Figure 5 shows the values of AlI2 = (KtlK$ ~ln. To use figure 5 it is necessary to perform the following operations : a) calculate the value of proportionality K1 = (L,Ifi,I and (K2 = L,Ifi2) for two test pieces; b) rew graphically the coefficient Ali = (K,lK,) *1z7; c) the elohgation obtained is A2 =,ili2 x A,. Example : Elongation of 24 % on 200 mm for a 40 mm x 1.5 mm test piece in terms of equivalent on a 30 mm x 10 mm test piece with a gauge length equal to 100 mm. a) K, = 2 = -j$ = 8,16 -_ K2-2 = f& = 5,~7 b) From figure 5, Ali = 1,W. cl Elongation required is 24 x 1.04 = 25,0 %. Qble 2 - Conversion factors: Prop,wtional gauge lengths Conversion from : 46 5, & d 5d 8d 1.m 0.W l.ooo 1,095 1,048 1, ,015 0, ,109 1,061 Factor for conversion to: ,16& 11,3Jg -4d 5d ad 0,913 0,676 0,966 0,967 0, ,916 1,039 l.ooo 0,942 1, , ,987 1,042 l.ooo 1, ,890 1,ooO 0,972 0,916 0,954 0, ,013 0,972 1, Table 3 - Conversion factors:l) Non-proportional gauge lengths Conversion from:, Factor for conversion to: 60mm 60mm 100 mm 2OOmm 6Omm ,942 0, mm t,ooo , mm ,029 t.000 0, mm 1,193 1,123 1,692 l.wo 1 Provided cross-sectionsi areas are the seme.

10 rs 3903 ( part 2 ) : 1989 IS0 25w2 : 1994 Table 4 - Conversion factors from 5,656 to non-proportional gauge lengths Factors shown under non-proportional gauge lengths give the value of O*ln, 25, 3 ( > LOI 4 To convert from values on a gauge length of 5,55& to a non-proportional gauge length, multiply by the appropriate factor. To convert from values on a non-proportional gauge length to 5,55 4, divide by the appropriate factor. See ai@ figures 1 and 2. Cross-sactional mrea of teat piece rn& ' ii '09' 110: \\ /I Factor for non-proportional gauge length of: 200mm 100 mm 80mm 5Omm 0, ,757 0,771 0,782 0,792 0,779 0,= 0,812 0, , ,842 0,849 0,854 0,860 0, , Iti 0, ,884 0, ,896 0,898 0,901 0,903 0, ,910 6,912 0,914 0,916 0,9iB 0, ,925 0, ,932 0, ,0, ,887 0, ,912 0,920 0, ,939 0, , ,972 0,975 0,978 0,981 0, ,989 0, ,996 0,998 1, ,010 1,012 1,014 1, ,829 0,861 0, , ,912 0,919 0,924 0,929 0, ,953 0, ,971 0,976 0,961 0,985 0, ,996 l.ooo 1,003 1, ,012 1,015 1,017 1,020 1,022 1, ,029 1, ,035 1,037 I,[139 1, ,045 1,047 6

11 IS 3803 ( Part2) : 1989 IS : 19S+ Table 4 IconcfudedJ - Conversion factors from 5,55&to non-proportional gauge lengths Cross-sectional wea of test piece Factor for non-proportional gauge length of: mm* 200mm 1OOmm 80mm 50mm 400 0, , ,935 1, , , ,051 1, , , ,939 1,025 1,055 1, ,940 1, , , , ,943 1, , ,031 1,060 1, ,945 1,032 1,062 1, , ,070 1, , ,076 1, ,051 1,081 1, , ,971 1,060 1,091 1, , ,095 1, , ,109 1, ,073 1,104 1, ,076 1,107 1, ,080 1,111 1, , ,114 1, ,087 1,118 1, ,121 1, , ,124 1, ,127 1, ,098 1,130 1, ,101 1, ,010 1,103 1, ,013 1,106 1, ,015 1,108 1,140 1, ,017 1,110 1,142 1, ,019 1,113 1,145 1, ,021 1,115 1,147 1, ,023 1,117 1, ,025 1,119 1,151 1, ,121 1,153 1, m 1,123 1,=5 1, ,030 1,125 1,157 1, , ,159 1, ,033 1,129 1, ,035 1,130 1, ,132 1, ,039 1,134 1,166 1, ,135 1,168 1, ,041 1,137 1,170 1, ,139 1,171 1, ,044 1,140 1,173 1, ,142 1,175 1, ,047 1,143 1,176 1, ,048 1,145 1, ,050 1,146 1,179 1, ,051 1,148 1,181 1, ,149 1, ,150 1, ,152 1,185 1, ,153 1,186 1, ,057 1,154 1, ,058 1,156 1,189 1,2Q ,059 1,157 1, axl 1,060 1,158 1,

12 I,:.. Table..; 5 - Conver$?n factors from jlfi to non-proportional gauge, lengths ::I,,, Factors shown under norkbroportionai -gauge lengths give the value of,,1.; i,,.,,9 (,)O. n _., \ Lo/..;.,.._,.... 7: :,,. 1 : To convert from values on a gauge length of b& to a non-proportional gauge length: multiply by the.appropriate facts To convert from values on a non-proportional gauge length to 4r&, : L See also figures 3 and 4. divide by the appropriate factor..,i.i, Cross-sectional L mrea of.test piece Factor for non-proportional. gauge length of: &2 2Odmm 100 mm 8O mm 50mm (> if! : m Ia g , z , ij q.734 0,799 0,763 0,767 0,790 0,721 0,787 0,810 0,734 0,802 0,829 0,745 0,813 0, ,823 0,791 a@1 0,787 0, ,850 0, , ,868 0,802 0, ,882 0,813 0,818 0, ,831 ;g 0:841 0,844 0,847 0,850 0, ,866 0, ,864 0, p.q 0,874 0, ,879 0.W 0, , ,903 0,907 0,911 0,915 0, ,929 0,928 0, ,937 0,939 0,941 0, ,948 0, , ,964 0,986 0, ,847 0,856 0, ,874 O,seo : ,908 0,914 0, ,934 0,938 0,941 0, ,952,0,9= ,801 0,963 (E,= qm 0,971 0,973 10,979 I&978 ;o;sao '0,982 0,984 0;986 0;988 i=j 0,991 0, , !&)9 0,907 0, ,- :g q4 ;g &O 0.97s O,sSr ,991 0;886 Q998!.O@.l ocn?$i10.f;of4 1,on f,o ,1.026 l.o@ *,031 4,033 1,038 1.m 1: lio44 1~,046 7,048 1,050 'i;o52 1,w :I;066 1,068 ',. 8

13 IS 3803 (Part2) : 1989 IS : 1964 Table 5 Iconcludedl - Conversion factors from 4fi0 to non-proportional gauge lengths Cross-sectional Fa,ctor for non-proportional gauge length of: Brea of test piece I mm2 200mm 1CKImm 8Omm 5Omm , , O.=g 0, , ,891 0,973 1,001 1, ,892. 0,974 1, , % ,977 1,005 1, ,979 1, ,897 0,980 1,008 1, ,981 1,010 1, ,983 1,011 1, ,901 0,984 1,012 1, , ,016 1, ,911 0,995 1,024 1,087 6&l 0,916 l,ooo 1,029 1, , l,w 750 0,924 1, , ,928 1, , ,932 1,018 1,047 1, ,935 1,021 1,051 1, , ,119 loo0 0,941 1, , ,944 1,031 1,061 1, ,947 1,034 1,064 1, ,037 1,067.1, , ,070 1, ,043 1,073 1, ,045 1,075 1, ,048 1,078 1, ,081 1, , , ,085 1, ,057 1.W 1, ,970 1,059 1,090 1, ,972 1,061 1,092 1, , ,094 1, ,976 1,065 1,096 1, , , , ,100 1, ,981 1,071 1,102 1, ,982 1,073 1,103 1, ,074 1,105 1, ,076 1,107 1, ,987 1,078 1,109 1, OS 1,079 1,110 1, ,081 1,112 1, , ,114 1, ,084 1,115 1, ,994 1,085 1,117 1, ,087 1,118 1, ,997 1,088 1,120 1, ,090 1,121 1, ,999 1,091 1,122 1, ,000 1,092 1,124 1, ,125 1, ,095 1,127 1, ,004 :~~ 1,128 1, ,129 1, ,006 1:099 1, ,007 1,100 1,132 1,201 29% ,101 1,133 1,203 3ooo 1,010 1,102 1,134 1,204-9

14 IS 3803( ~art1): 1989 IS0 2!599lZ: 1984 Table 6 - Elongations values ) on 5.65 & corresponding to those obtained on 4 fi gauge length Actual elongation (%I measured on46 Corresponding elongation (%I on 5, m ) Factor 0,957. Values rounded to nearest whole number. Table 7 - Elongation valuesl) on 5.65 fi corresponding to those obtained on 50 mm gauge length Actual alongation (%I on5omm gauge length m Corresponding elongation f %) on gauge length if cross-sectional area in square millimetres is: loo ml 9001cm ooo lO m m T m m m m m m m m 20 m m Z$ ) Rounded to the nearest whole number. 10

15 IS 3803( Part2):!989 ISO 2566:2 : 1964 Table 8 - Elongation veluesl) on 5,656corresponding to those obtained on 80 mm gauge length Actual Corresponding elongation (%I on 5,ffiagauge length if cross-sectional area longattion (%I in square millimetres is: on8omm gauge length 5 IO loo zxl al oco1zoo15cn2ooo l ' Z b J b ~42'~~~371~~~~~~~~~~~ ~~42~~~~~~~~~~~~~~~ ) Roundedtothe nearest whole number. 11

16 IS 3803 (Part2): 1989 IS0 2566/2: 1964 Table 9 - Elongation values lj on 5,65&$ corresponding to those obtained on 100 mm gauge length Actual Corresponding elongation (%I on 5,656gauge length if cross-sectional area mlongation (%I in square niillimetres is: on 100 mm gauge length loo w 4lx 5aI ooo oco , : I) Rounded to the nearest whole number..

17 IS 3803 (Part2) : 1989 IS : 1984 Table 10 - Elongation values ) on 5,55 6 corresponding to those obtained on 200 mm gauge length Actual Corresponding elongation (%I on 5,65 fi gauge length if cross-sectional Jongation t 96) in square millimetres is: area on2oomm _ gaugelength 5 lo loo u.l 700 aw 9001ooo1~15002ooo , , ' ' , l ' Q $ l ~Q4lQ~~~1~~~~~~~~~8~ l 34 ~~~441~~~~~,~~~~~~~~~~~ ~~~4~~~44141~~~~~~~3737~ R ~6l~~~QQ51~~8~~47471~~~~~~ 46 6QQR~~~~B51~89~~474747~~~~ ) Roundedtothe nearestwhole number., 13

18 IS3SO3( P&2): 1989 IS0 25&u/2: 1981 Table 11 - Elongation values on 4 6 corresponding to those obtained on 50 mm gauge length Actual Corresponding elongation (%I on4figauge length if cross-sectional area elongation (%I in square millimetres is: on5omm gauge length 5 lo M loo o'xm oc ooo12al15aI2m250( q ) Rounded to the nearest whole number. 1 14

19 IS 3803 (Pd2) : IS0 2568~2 : I Table 12 L Elongation values lj on 4 fi corresponding to those obtained on 80 mm gauge length Actual dongation 1%) on6omm gauge length Corresponding elongation I%) on 4figauge length if cross-sectional area in eqtire millimet!es is : 5 la loo 150 zoo ooo ooo25oc ' ?fl % M h Cl ' ' l ' wn~b51~9~47~1~~#~~~q Q ) Rounded to the nearest whole number. 15

20 IS3903(Part2~:?9S9 IS0 2566l2 : 1984 Table 13 - Elongation values l) on 4 ficorresponding to those obtained on 100 mm gauge length Actual Corresponding elongation (961 on 4agauge length if cross-sectional area elongation (%I in square millimetres is: on 100 mm gauge length 5 IO loo oo w 800 wo1oool2co15w2wo25a ' i ' * ~~~441~~~~3737~~~~~~~~~~~ ' ' ii ~6l~~~WQB51~8~~4747~~~~~~~ 1) Rounded to the nearest whole number. 16

21 IS 3803 ( Part 2 ) : 1989 IS : 1984 Table 14 - Elongation values ) on 4 &-, corresponding to those obtained on 200 mm gauge length dongation (%I on200mm gauge length ' p Corresponding elongation (%) on 4figauge length if cross-sectional area in square millimetrel is: loo 150 alo m.l mm 9001ooo oao , ' O ' l ' l ' A' ~~~W~~QQB5l~~~~B~~47~ 6l~~~~~~M~MM515l~W88~47 1) Roundedtothe nearestwhda number. I 17

22 , Table 15 - Elongation values I) on 50 mm corresponding to those obtained on 5,556gauge length Actual 'longation (%I on 5,656 gauge length Corresponding elongation (%I on 59 mm gauge length if cross-sectional area in square millimetres is: loo 150 2tm uJo12ca15w2ooo t : ' B ) Roundedtothe nearest whole number Q~~~47~##~515l~B~~M~~~ ~~~47~8W~5l~~Q~~M~~57~ ' x

23 IS3903(Psrt2): 1989 IS : N%4 Table 16 - Elongation values l) on 80 mm corresponding to those obtained on 5,65~gauge l8ngth Actual Corresponding elongation 1%) on 80 mm gauge length if cross-sectional area Blongation (%I in pquare millim;etres is: on 5.65 fi gauge length 5 IO loo wo oMl IO ' ' , , ' i626nn j l ~~3l~~~~I~~~~~~~~~~~ , ) Roundedtothe nearest whole number. 19

24 IS 3903 ( Part 2 ).: 1999 IS0 2589R : 1994 Table 17 - Elongation values 1 on 100 mm corresponding to those obtained on 5,55 6 gauge length Actual Blongation (%I on gauge length Corresponding elongation (%I on 100 mm gauge length if cross-sectional area in square millimetres is : lal to to to to ii so Gm120015aJ2ao I m m m m m ti t t9 m 20 m m m m m m 20 m m m m m J Rounded to the nearest whole number.

25 IS 3803(PartZi: 1989 IS0 2566, 2 : 1984 Table 18 - Elongation values l) on 200 mm corresponding to those obtained on 5,65 Ggauge length Actual Corresponding elongation 1%) on 200 mm gauge length if cross-sectional tlongation (%J in square millimetres is: area on gauge length Oal ooo i ' ' ' ! ) Rounded to the nearest whole number. 21

26 IS 3903(Part2): 1989 so 2599i2: 1984 Actual elongation 1%) on4g gauge length Table 19 - Elongation values on 50 mm corresponding to those obtairkd on 46 gauge length Corresponding elongation (%I on 50 mm gauge length if cross-sectional area in square millimetres is: loo\150 ZOO mO ( s l&l ' J I% b ~ l ~rn6~~8~~~~~8~~~~~8~~~~ ' ~ l ~ l a ~~~~37~~#~ ~~Q~~~~~ ~~~~~~~414420~#.#~~~ ~~~~~~414~~~~~ ~~~~ ~~~4140~~4447~188~~51518~~ 46 ~~~4~~~~4747~88~~515l~MQ~~ 47 ~~4lQ~~447819~~5l~~~~W~~~ 22

27 IS 3803( Part2): 1989 IS0 2566;2 : 1984 Table 20 - Elongation values ) on 80 mm corresponding to those obtained on 4x3: gauge length _-~_---_- I.. Actual Corresponding elongation (2) on 80 mm gauge length if cross-sectiona! area longation (%I on46 in square millimetres is : _. ~ gauge length cm al103012co l-i 'I t , m ; ' %I ' iii ' C ) Rounded to the nearest whole number. 23

28 IS 3903 (Part2) : 1989 is : 198$ Table 21 - Elongation valuesql on 100 mm corresponding to those obtained on 4 $&gauge length Actual dongation (%I on46 gauge length Corresponding elongation (%I on 100 mm gauge length if cross-sectional In square millimetres is: 5 lo loo M) soo1ooon2aj15c02ooo25a ll ' i a , ' k ' ~ ~~~~37~~~~#41424Q~~~~~~~ ' ' ~~~~~414~~~~~~4747~~8~~~51 lb Roundedtothe nearest whole number. area

29 Td#e22- ElongdionV81WU7} Z(X)mmcormpondhw to thosoobtdned on 4 ~ge&o length Actu81 Ion-ion (%J ~~ -w- (%} on 200 nun ~ Iongth it aro9saotional area in,8quw.mliiimotrosk: m4m250m 4co K10600mmoml@llm 19002aw2m e9ee9e e $ It 12 88s It 11 It ~ :10., 10.ll,: , 12, 12. 1? 12?2, t?mlz; ?3 *4 9. :?O.10,.....,, 11, ?1. 12:..12., t2.,?3,, :.13::13 13; i4 ;;B. w ~x%~ji,: i2.: i2 12 i2. 13 i3, Ii :w I 4.: 14:.?4 14 li.-35. w. ff,$lj :-jk<: iz,,.~:fi :$3.j3,13 * I?i t5 1$ t6 37 -?1 ~.w ~ 12,:?3.:::$+ :,;w.. *4:,. :?4..[ M 15. Is 1S 1S W 16 lif i ie, ~~2?3 : :i$::. :tifl: 14. :.14 F.. ;,16.<,?ti 16 1? M fe ~6 f~ 17 f? f? 17: : 1? 18 18!9 I&,,?$,...I; W;;;; 15. ;15 1~. %,,,:16,,,,t6., ;??. 37 ;t7,.17,.17.,, 18, 18 18, :18, 18, 19 ) 1$...,,.,. a ~ti:;: :14:: ~ ;.% :: 1$-. 18, 16j t~::,. ~~ 17 :,t? 18 %$. :t& $! W&: $$.~ ~ 20 2f it ;i5-. w... w v; le. :.:Iy $8 Hay. m: w w a le ~.20. ~*i ::* :; *:., w:..+1.= w 75 :: s6 :: w ~.17.. la:..s;, w 1$$ 1$ w *, 26:::* 20 20, M.,..~y :21.,:.: 21-,, t~ 16.W:.-lll 1S 18> :. Xi m,20. ~ 21 ~t 21, 2?,.22 22;.. 22:: :4?, = :23 :% 16 I?.. ~, S. ty 19 *.ti :c20,.21.. a :21.?2..g;:.?, z :.~ ~:,q;..~,:~;:24 :%:.a 1~.W ia ~~19.zii zi..21 2: -+2..ti.. ti, % :.ti ~?.24~ z.~~ : , ? a q 23 :,24: ;?$! 24 *. :2! w.. %, $ Zt a 22 a 2s :s a 24,24 a =..26 a6; ~ a , : %.;. 2521X?fL. ti * % ~ = 28 Ze ~ 20, ?4 W, :.26,26.; s.. 26,2iL , 27. q..: a 28. 2S: is:. &;.26 :28 -i 7 :;& = + S.28 S ti ki 3*.21 z :;:26,,Pw.21,2S q. 29 *. 29 :?. 30.:? M.9i a, ,,26 : 26.. * 27 27? =.8 30 :*. +0 ~ 3~ ,24.28, :. 28.% 2 Z9. ze -m.36: :31: ? ,.S,,,*, 27,.,,;~ 28;. 23, 2s 29 p, : * ,, : 32 3? ,. s? m &.3Q 31 3t,::,*32 ii 32 Zl, a ;33. *, s,%.p 33 %. 25 a ma, , 31,,:31.32.,q t 3$ 3!..:35 s ~ 2$ 28,27 * ;33 33 y 34 % 36.. s:,3s W, z = s,: ! =* i, , 31 32y3; ; Zg j3a3.3e S.. ze & M s s.$6 s q ti 37 3L 38 :39,,,%, ea) 3t32g33*33 i % J38 3 $*38. 3r a % ti.* 38.3s 38.4&40 4t 4l * W38 34 at m..4o L, : , W 37 D S..3S , +, 4i 41 41: 4i? , * 38 s 37.3 a, & 4t 4t=4t. g & , w 34.* ;s, ,,,* #.. * 44A5.46 4T q :%.37,36 a s u).,41 41 X ,, _+, ) Flomdedto tly3 rmareatwholupulhber..: 25

30 JS 3803 ( Part 2 ) : 1989 ISO 26tWf2: loo Cross-sectional area (mm21 Figure 1 - Conversions between 5,65&.and 50 mm gauge length

31 IS33o3!Part2r:1339 IS : la cl3 L6 LL L2 LO L : 2L ,, loo Cross-sectional area (mm21 Figure 2 - Conversions between and 200 mm gauge length 27

32 i : III I III11 I II II 1111 I II III Ill11. Il~~l lo MO 500 1oaI. 2oaJ Cross-s%ttionai area tmm2b Figure 3 - Cr~wersiotis between 4 if& and 50 mm gauge length

33 .. CmHec&alarea (red),......,,,. Figure 4- Convorsione betw&m 4 ~. nd 200 mm gauge length 29

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