1、 STD.BSI BS EN IS0 25bb-1-ENGL L999 Lb24bb OBOBOLL 337 m BRITISH STANDARD Steel - Conversion of elongation values - Part 1: Carbon and low alloy steels The European Standard EN IS0 256 - present to the responsible internatiomUEuropean committee any enquiries on the interpretation, or proposals for c
2、hange, and keep the UK interests informed - monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC
3、 Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitle
4、d “International Standards Correspondence Index“, or by using the “Find“ faciity of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a conat. Users of British Standards are responsible for their correct application. Compliance wit
5、h a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN IS0 title page, the EN IS0 foreword page, the IS0 title page, the IS0 foreword page, pages 1 to 28, an inside back cover and a back co
6、ver. The BSI copyright notice displayed in this document indicates when the document was last issued ISBN O SSO 32678 O STD.BSI BS EN IS0 25bb-L-ENGL Lqqq D 1b24bb 0808013 LOT EUROPEAN STANDARD NORME EUROPENNE EURWISCHE NORM EN IS0 2566-1 June 1999 ICs 77.040.00; 77.040.10 English version Steel - Co
7、nversion of elongation values - Part 1: Carbon and low alloy steels (IS0 2566-1 :1984) Ader - Conversion des valeurs dallongement - Pattie 1: Aders au carbone et aders faiblement allis (IS0 2566- 13984) Stahl - Umrechnung von Bnichdehnungswerten - Teil 1 : Unlegierte und niedrig legierte Sthle (IS0
8、2566-1:1984) This European Standard was approved by CEN on 25 April 1999. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any aiteration. Up-to-date lists and bibiiogra
9、phical references concerning such national standards may be obtained on application to the Central Secretariat 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 C
10、EN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, eigium. Czech Republic. Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,
11、 Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMtTEE FOR STANDARDIZATION EUROPISCHES KOMITEE FUR NORMUNG COMITE EUROPEEN DE NORMALISATION Centrai Secretariat rue de Stassart, 36 B-I O50 BNSSOS 0 1999 CEN All rights of exploitation in any form and by any means reserved woriddwi
12、de for CEN national Members. Ref. NO. EN IS0 2566-1:1999 E STD.BS1 BS EN IS0 25bb-1-ENGL proportional gauge lengths of k fio are also used for flat and round test pieces, where k may be one of a number of values, .e. 4; 565; 8,16; and 11,3. The value 5,656 is adopted as the internationally preferred
13、 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 which could be used to convert test results into values based on the different
14、 gauge lengths. This part of IS0 2566 accordingly 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 con- versions, however, note should
15、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 fac- tors influencing the determination of percentage elongations, they shall be used for acceptance purp
16、oses 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. 1 Scope and field of application This part of IS0 2566 specifies a method of converting room temperature percentage elongations
17、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 carbon, carbon manganese, molybdenum and chromium molybdenum steels within the tensile str
18、ength range 3Ci to 700 N/md and in the hot-rolled, hot-rolled and normalized or annealed conditions, with or without tempering. These conversions are not applicable to al cold reduced steels; b) quenched and tempered steels; c) austenitic steels. Neither should they be used where the gauge length ex
19、ceeds Esso or where the width to thickness ratio of the test piece exceeds 20. Care should be exercised in the case of strip under 4 mm thickness, as the index in the formula given in clause 4 in- creases with decreasing thickness; the value to be used shall be the subject of agreement between the c
20、ustomer and the supplier. 2 Symbols In this part of IS0 2566, the symbols shown in table 1 are used. Table 1 - List of symbols 3 Definitions For the purpose of this part of IS0 2566, the following defini- tions apply: 3.1 test piece used for measurement of strain. gauge length: Any length of the par
21、allel portion of the The term is hereafter used in this part of IS0 2% to denote the original gauge length, Lo, marked on the test piece for the determination of percentage elongation after fracture, A. 1 sTD.BSI BS EN IS0 25bb-1-ENGL 1999 m Lb24bb9 0808018 791 EN IS0 2566-1:1999 3.2 proportional ga
22、uge length: A gauge length having a specified relation to the square root of the cross-sectional area, for example 5.65 6. 3.3 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 50
23、mm. 4 Basic formula The data contained in this part of IS0 2566 are based on the Oliver formula, 1 which is now widely used for such elongation conversions. The Oliver formula can, in a simplified form, be expressed as A, = 1.74A (lo) Jso where A, is the required elongation on gauge length Lo; A is
24、the elongation on a gauge length of 4&; So and Lo are defined in table 1. This formula gives a direct conversion of elongation on 4 b) Elongation of 25 % on a 40 mm x 10 mm test piece of 200 mm gauge length is equivalent to 25 x 1/0,796 = 31,4 % on 5,65fi0 (see table4). From the examples shown it wi
25、ll be seen that conversions in- volving 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 conver- sions, whilst tables 15 to 18 can be used to obtain elongations on fixed gauge lengths corre
26、sponding to 5,652 x Al where K, and K2 designate the proportionality ratios of any two test pieces. Figure 5 shows the values of A1;2 = (K1/K2)0,4. To use figure 5 it is necessary to perform the following opera- tions : at calculate the values of proportionality K1 = (L,/fi) and K2 = L2/,/ b) read g
27、raphically the coefficient .Ili2 = (K1/K2i0*4; c) the elongation obtained is A2 = x A,. I I Table 3 - Conversion factors11 : Non-proportional gauge lengths 3 _ STD.BSI BS EN IS0 2Cbb-3-ENGL 3999 = Lb21ibb O808020 347 EN IS0 2566-1:1999 Table 4 - Conversion factors from 5.656 to non-proportional gaug
28、e lengths Factors shown under “non-proportional gauge lengths“ give the value of To convert from values on a gauge length of 5,65&to a non-proportional gauge length, multiply by the appropriate factor. To convert from values on a non-proportional gauge length to 5,65&, divide by the appropriate fact
29、or. See also figures 1 and 2. Cross-sectional irea of test piece mmz 5 10 15 20 25 30 35 40 45 50 55 60 70 80 90 100 110 120 130 140 150 180 180 190 200 210 220 230 240 250 280 270 280 290 300 310 3n) 330 340 350 360 370 380 390 im Factor for non-proportionsl gauge length of: 200 mm 100 mm 80 mm 50
30、mm 0,331 0,437 0,478 0,577 0,381 0,502 0.549 0,663 0,413 0,545 0.596 0,719 0,437 0,577 0,631 0,761 0,457 0.603 0,660 0.796 0,474 O,= 0,684 0,826 0,489 0,645 0,706 0,852 0.514 0,679 0,742 0.896 0.535 0,706 0,772 0.932 0.545 0,719 0,786 0.949 0.562 0,741 0.81 1 0,978 0.577 0,761 0.833 1.005 0,591 0,78
31、0 0,852 1.029 0,603 0,796 0,871 1,051 0,626 0.826 0.903 1 ,o90 0,502 0.663 0,725 0.875 0,525 0,693 0.758 0,915 0,615 0,812 0,887 1,071 O. 636 0,839 0,917 1,107 0.645 0.852 0,931 1,124 0.654 o.= 0,944 1,139 0.663 0,875 0.956 1,154 0,671 0.885 0.968 1,168 0.679 0.896 0,979 1.182 0,686 0.905 0.990 1,19
32、5 0,693 0,700 0.706 0,713 0.719 0,725 0.730 0,736 0.741 0.747 0,752 0,757 0,761 0,766 0.771 0,915 0,924 0.932 0,941 0.949 0,956 0.964 0,971 0,978 0.985 0,992 0.998 1.005 1 ,o1 1 1,017 1 .o00 1,010 1,019 1 .o28 1.037 1,046 1.054 1.062 1,070 1,077 1.084 1,092 1,099 1,105 1,112 1,207 1,219 1.230 1,241
33、1.252 1,262 1,272 1,281 1,291 1,500 1,309 1,317 1.326 1,334 1,342 0.775 1.023 1,118 1.350 0.780 1.029 1,125 1,357 0.784 1,034 1,131 1,365 0,788 1,040 1,137 1,372 0,792 1,045 1,143 1,379 4 STD-BSI BS EN IS0 25bb-l-ENGL 1949 lib24bb9 0808021 Zab EN IS0 2566-11999 Table 4 (concluded) - Conversion facto
34、rs from 5,65& to non-proportional gauge lengths :ross-sectional ma of test piece mm2 400 410 420 430 440 450 460 470 480 490 500 550 600 650 Mo 750 800 850 900 950 loo0 lo50 1 loo 1150 1200 1250 1300 1350 1400 1450 1500 1550 1600 1650 1700 1750 1800 1850 1900 1950 2000 2050 2 loo 2 150 2200 2250 230
35、0 2350 2400 2 450 2500 2560 2800 2650 2700 2 750 2800 2850 2900 2950 3000 Factor for non-proportional gauge length of: 200 rnm 100 rnm 80 mm 50 rnm 0.796 0,800 0,m 0,808 0,812 0,815 0,819 0.822 0,826 o,= 0.m 0,849 0,863 0,877 0.891 0,903 0,915 0,926 0.936 0,947 0.9% 0.966 0.975 0.983 0,992 1 ,O00 1.
36、008 1,016 1.023 1.030 1 ,W7 1.044 1,051 1 ,57 1,063 1,070 1,076 1.082 1.087 1,093 1,099 1,104 1,109 1,115 1,120 1,125 1.130 1,135 1,139 1,144 1,149 1,153 1,158 1,162 1,167 1,171 1,175 1,179 1.183 1,187 1,051 1.056 1.061 1,066 1,071 1,076 1 ,ml 1,085 1,090 1,094 1.099 1,120 1,139 1,158 1,175 1.191 1,
37、207 1.222 1,236 1,249 1,262 1,274 1.286 1.298 1,309 1.320 1,330 1,340 1,350 1,359 1.369 1,378 1.386 1.395 1,403 1.41 1 1,419 1,427 1,435 1,442 1,450 1,457 1.464 1,471 1,477 1,484 1,491 1,497 1,503 1,510 1,516 1.522 1.528 1.533 1,539 1,545 1,550 1,566 1.561 1,567 1,149 1,154 1.160 1,165 1.171 1,176 1
38、,181 1,186 1,191 1,196 1,201 1,224 1,246 1,266 1,285 1,303 1,320 1,336 1,351 1,366 1,380 1.393 1.406 1,431 1,443 1,454 1.465 1.476 1,486 1.496 1,506 1,516 1,525 1.534 1,543 1.w 1.560 1.569 1,577 1.585 1.593 1.600 1 ,m 1,623 1 .Mo 1.637 1.644 1,651 1,657 1,664 1.670 1,677 1,683 1,689 1.695 1,701 1.70
39、7 1,713 1,419 1,615 1,191 1.572 1.719 1.386 1.393 1.400 1.406 1,413 1,419 1,426 1.432 1,438 1,444 1,450 1,477 1,503 1.550 1,572 1,592 1,612 1,630 1.648 1.666 1,681 1,697 1,712 1,727 1,741 1,755 1,768 1,781 1,794 1.806 1,818 1.829 1,841 1.852 1.862 1.873 1,883 1.893 1.903 1,913 1.922 1,931 1,941 1,95
40、0 1.968 1.967 1,975 1.984 1.992 2.000 2,008 2,016 2.023 2,031 2,038 2,046 2,053 2.060 2,067 i ,528 2 074 5 Table 5 - Conversion factors from 4G to non-proportional gauge lengths Factors shown under “non-proportional gauge lengths” give the value of To convert from values on a gauge length of 4& to a
41、 non-proportional gauge length, multiply by the appropriate factor. To convert from values on a non-proportional gauge length to 4n0, divide by the appropriate factor. See also figures 3 and 4. Cross-sectional Brea of test piece mm2 5 10 15 20 25 30 35 40 45 50 55 60 70 80 90 100 110 120 130 140 150
42、 lS0 180 190 200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 360 370 380 ao im Factor for non-proportional gauge length of: No mm 100 mm 0,288 O. 380 0,331 0,437 0,359 0,474 0,380 0,502 0.398 0,525 0,413 0.544 0.426 0.562 0,437 0,577 O. 447 O. 580 0.457 0,803 0.466 0,615 0,474 0,625
43、0.489 O. 645 0.502 0,662 0,514 0,678 0.525 0,693 0,535 0,706 O, 544 0,718 0,553 0.730 O. 562 0,741 0,560 0,751 O, 577 0.761 O,=J 0.779 0,597 O. 788 0.603 0.796 0.609 0.804 0,615 0,811 0.620 0,818 0.625 0.825 0,631 0.832 O. 636 0.839 0.640 0,845 0.645 0,851 0.650 0.857 0,654 0.863 0.658 0.869 0.662 0
44、,874 0,667 O. 880 0,671 0.885 0,674 0.890 0,678 0,895 0.682 0.900 0.686 0.905 0,689 0.909 0.584 o.no 80 mm 0.416 0,478 0,518 O, 549 0,574 0,595 0,614 0,631 0.m 0.659 0,672 0,684 O, 705 0,724 0.742 0,757 0,772 0.786 0.798 0,810 0,821 0.832 0,842 0.852 0,861 0,870 0.879 0,887 0.895 0,902 0,910 0,917 0
45、.924 0,931 0,937 0,943 0.950 0.956 O. 962 0.967 0,973 0.979 O, 984 0.989 0,994 50 rnm o, 502 0,577 0,625 O. 662 0,693 0.718 0.741 0,761 0,779 0.796 0,811 0,825 0,851 0,874 0.895 0.914 0.932 0.948 0.963 0,978 0,991 1 .ooQ 1,016 1,028 1.03 1.050 f560 1,070 1 1.089 1.098 1,107 1,115 1,123 1,131 1,139 1
46、,146 1,153 1,161 1,168 1,174 1,181 1,187 1,194 1.200 STD*BSI BS EN IS0 25bb-l-ENGL 1999 lib24bb9 0808023 059 EN IS0 2566-1:1999 Table 5 (concluded) - Conversion factors from 4Js0 to non-proportional gauge lengths :rosr-sectional oa of test piece mmz 400 410 420 430 440 450 480 470 480 490 500 5% 600
47、 650 700 750 800 850 900 950 lo00 1 o50 1 100 1150 1200 1250 1300 1350 1400 1450 1500 1560 1600 1650 1700 1750 1800 1850 1900 1950 2000 2050 2 100 2 150 2200 2 250 2300 2 350 2400 2 450 2500 2550 2600 2650 2 700 2 750 2800 2850 2900 2950 3000 Factor for non-proportional gauge length of: 0.693 0.696
48、0,699 0,703 0,706 0,709 0.712 0,715 0,718 0,721 0.724 0.730 0,751 0,763 0.775 0.786 0.796 0,805 0,815 0.824 0.832 0,840 0.848 0.856 o,= 0,870 0.877 0,883 0.890 0,896 0,902 0.908 0,914 0.920 0,925 0,931 0.936 0,941 0.946 0,951 0,956 0.960 0.965 0,970 0.974 0,979 0,983 0,981 0,991 0,395 0.999 1.003 1,
49、007 1 ,o1 1 1,015 1,019 1.022 1,026 1,029 1,033 1 .o36 0,914 0,919 0,923 0,927 0,932 0,936 0.940 0.944 0,948 0,952 0,956 0.974 0,991 1,007 1,022 1.036 1,050 1.063 1,075 1,087 1.098 1,109 1,119 1,129 1,139 1,148 1,157 1,166 1,174 1,183 1,191 1,198 1,206 1,214 1,221 1,228 1,235 1,242 1,248 1,255 1,261 1,267 1,273 1,279 1,285 1,291 1,297 1,302 1,308 1,313 1,319 1,324 1,329 1,334 1,339 1,344 1,349 1,354 1,358 1,363 1.368 0.999 1,004 1,009 1,014 1,019 1 .O23 1,028 1,032 1,036 1,041 1,045 1.065 1.084 1,101 1,118 1,133 1,148 1,162 1,175 1,188 1.200 1,212 1.2
