SANS 2566-1-2005 Steel - Conversion of elongation values Part 1 Carbon and low alloy steels《钢 伸长值换算 第1部分 碳钢及低合金钢》.pdf

1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ICS 77.040.10 ISBN 0-626-16335-8 SANS 2566-1:2005Edition 1ISO 2566-1:1984Edition 2SOUTH AFRICAN NATIONAL STANDARD Steel Conversion of elongation values P

4、art 1: Carbon and low alloy steels This national standard is the identical implementation of ISO 2566-1:1984 and is adopted with the permission of the International Organization for Standardization. Published by Standards South Africa 1 dr lategan road groenkloof private bag x191 pretoria 0001 tel:

5、012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 2566-1:2005 Edition 1 ISO 2566-1:1984 Edition 2 Table of changes Change No. Date Scope Abstract Specifies a method of converting room temperature percentage elongations after fracture obtained on v

6、arious proportional and non-proportional gauge lengths to other gauge lengths. Keywords elongation, low-alloy steels, metals, steels, tension testing, tests, test specimens, unalloyed steels. National foreword This South African standard was approved by National Committee StanSA SC 5120.20C, Enginee

7、ring materials Mechanical testing of metals, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. ti - p International Standard 256611 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION.MEMI(nYHAPOHAR OPTAHH3Al proportional gauge lengths of k G ar

8、e 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; 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 elong

9、ations 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 gauge lengths. This part of IS0 2566 accordingly includes tables of conversion factors, tables of actual conversions for som

10、e 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 be taken of the limitations on their applicability as stated in clause 1. While, as indicated, the conversions are considered

11、 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 purposes only by agreement between the customer and supplier. In cases of dispute, the elongation shall be determined on the gaug

12、e 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 after fracture obtained on various proportional and non-proportional gauge lengths to other gauge lengths. The formula (see c

13、lause 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 strength range 300 to 700 N/mm2 and in the hot-rolled, hot-rolled and normalized or annealed conditions, with or without temperi

14、ng. These conversions are not applicable to a) cold reduced steels; b) quenched and tempered steels; c) austenitic steels. Neither should they be used where the gauge length exceeds 256 or where the width to thickness ratio of the test piece exceeds 20. Care should be exercised in the case of strip

15、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 customer and the supplier. 2 Symbols In this part of IS0 2566, the symbols shown in table 1 are used. Table 1 - List of symbol

16、s Symbol Description A Percentage elongation on gauge length, L, after fracture, obtained on test A, Percentage elongation on a different gauge length, required by conversion d Diameter of test piece LO Original gauge length SO Original cross-sectional area of test piece 3 Definitions For the purpos

17、e of this part of IS0 2566, the following defini- tions apply : 3.1 gauge length: Any length of the parallel portion of the test piece used for measurement of strain. The term is hereafter used in this part of IS0 2566 to denote the original gauge length, L, marked on the test piece for the determin

18、ation of percentage elongation after fracture, A. 1 IS0 2566/l-1984 (E) 3.2 proportional gauge length: A gauge length having a specified relation to the square root of the cross-sectional area, for example 5,656 3.3 non-proportional gauge length: A gauge length not specifically related to the cross-

19、sectional area of the test piece, usually expressed in a given dimension, for example 50 mm. 4 Basic formula The data contained in this part of IS0 2566 are based on the Oliver formula, I) which is now widely used for such elongation conversions. The Oliver formula can, in a simplified form, be expr

20、essed as A, = is the required elongation on gauge length Lo; A is the elongation on a gauge length of 46; So and Lo are defined in table 1. This formula gives a direct conversion of elongation on 4G to the equivalent for a test piece of cross-sectional area So, and a gauge length Lo. Expressed in te

21、rms of 5,656, which is now regarded as the internationally accepted standard gauge length, it becomes a4 where A is the elongation on a gauge length of 5,656. Tables 2 to 22 and figures 1 to 5 have been prepared on the basis of the above formulae. 5 Conversion from one proportional gauge length to a

22、nother 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 b) Elongation of 25 % on a

23、 40 mm x 10 mm test piece of 200 mm gauge length is equivalent to 25 x 110,796 = 31,4 % on 5,65fi (see table 4). From the examples shown it will 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

24、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 corresponding to 5,656. Similarly, tables 11 to 14 can be used for conversion to 46 and tables 19 to 22 for elongations on fixed gauge lengths cor- responding to 4

25、 b) read graphically the coefficient A1.2 = (K,lK2)*r4; I c) the elongation obtained is A2 = A,.2 x A,. I Table 2 - Conversion factors : Proportional gauge lengths Conversion from : 4ll$ 565 6 8,16l/, divide by the appropriate factor. 4 IS0 2566/l-1984 (E) Table 4 (concluded) - Conversion factors fr

26、om 565 dSo to non-proportional gauge lengths Cross-sectional area of test piece mm* 400 410 420 430 440 450 460 470 480 490 500 550 600 650 700 750 800 850 900 950 1000 1050 1100 1150 1200 1250 1300 1350 1400 1450 1500 1550 1600 1650 1700 1750 1800 1850 1900 1950 2000 2050 2100 2150 2200 2250 2300 2

27、350 2400 2450 2500 2550 2600 2650 2700 2750 2800 2850 2900 2950 3000 Factor for non-proportional gauge length of: 200 mm 100 mm 80 mm 50mm 0,796 1,051 1,149 1,386 0,800 1,056 1,154 1,393 0,804 1,061 1,160 1,400 0,808 1,066 1,165 1,406 0,812 1,071 1,171 1,413 0,815 1,076 1,176 1,419 0,819 1,080 1,181

28、 1,426 0,822 1,085 1,186 1,432 0,826 1,090 1,191 1,438 0,829 1,094 1,196 1,444 0,833 1,099 1,201 1,450 0,849 1,120 1,224 1,477 0,863 1,139 1,246 1,503 0,877 1,158 1,266 1,528 0,891 1,175 1,285 1,550 0,903 1,191 1,303 1,572 0,915 1,207 1,320 1,592 0,926 1,222 1,336 1,612 0,936 1,236 1,351 1,630 0,947

29、 1,249 1,366 lk= 0,956 1,262 1,380 1,665 0,966 1,274 1,393 1,681 0,975 1,286 1,406 1,697 0,983 1,298 1,419 1,712 0,992 1,309 1,431 1,727 Loo0 1,320 1,443 1,741 Lo 1,330 1,454 1,755 1,016 1,340 1,465 1,768 1,023 1,350 1,476 1,781 1,030 1,359 1,486 1,794 1,037 1,369 1,496 1,806 WJ 1,378 l,!jofj 1,818

30、1,051 1,386 1,516 1,829 1,057 1,395 1,525 1,841 1,063 1,403 1,534 1,852 1,070 1,411 1,543 1,862 1,076 1,419 1,552 1,873 1,082 1,427 1,560 1,883 1,087 1,435 1,569 1,893 1,093 1,442 1,577 1,903 1,099 1,450 1,585 1,913 1,104 1,457 1,593 1,922 ?,109 1,464 1,600 1,931 1,115 1,471 1,608 1,941 1,120 1,477

31、1,615 1,950 1,125 lt4-84 1,623 1,958 1,130 1,491 1,630 1,967 1,135 1,497 1,637 1,975 1,139 1,503 1,64J 1,984 1,144 1,510 1,651 1,992 1,149 1,516 1,657 zoo0 1,153 1,522 1,664 2,008 1,158 1,528 1,670 2,016 1,162 1,533 1,677 2,023 1,167 1,539 1,683 2,031 1,171 1,545 1,689 2,038 1,175 1,550 1,695 2,046

32、1,179 1,556 1,701 2,053 1,183 1,561 1,707 2,060 1,187 1,567 1,713 2,067 1,191 1,572 1,719 2,074 IS0 2566/l-1984 (E) Factors under ” non-proportional gauge lengths” give the value of Table 5 - Conversion factors from 4Js7; to no n-proportio nal gauge len gths To convert from values on a gauge length

33、of 4625 o,f= 0,825 70 0,489 0,645 0,705 0,851 80 0,502 0,662 0,724 0,874 90 0,514 0,678 0,742 0,895 100 0,525 0,693 0,757 0,914 110 0,535 0,706 0,772 0,932 120 0,54-J 0,718 0,786 0,948 130 0,553 0,730 0,798 0,963 140 0,562 0,741 0,810 0,978 150 0,560 0,751 0,821 0,991 160 0,577 0,761 0,832 1,004 170

34、 0,584 0,770 0,842 1,016 180 0,590 0,779 0,852 1,028 190 0,597 0,788 0,861 1,039 200 0,603 0,796 0,870 1,050 210 0,609 0,804 0,879 1,060 220 0,615 0,811 0,887 1,070 230 0,620 0,818 0,895 1,080 240 0,625 0,825 0,902 1,089 250 0,631 0,832 0,910 1,098 260 0,636 0,839 0,917 1,107 270 0,640 0,845 0,924 1

35、,115 280 0,645 0,851 0,931 1,123 290 0,650 0,857 0,937 1,131 300 0,654 0,863 0,943 1,139 310 0,658 0,869 0,950 1,146 320 0,662 0,874 0,956 1,153 330 0,667 0,880 0,962 1,161 340 0,671 0,885 0,967 1,168 350 0,674 0,890 0,973 1,174 360 0,678 0,895 0,979 1,181 370 0,682 0,900 0,984 1,187 380 0,686 0,905

36、 0,989 1,194 390 0,689 0,909 0,994 1,200 divide by the appropriate factor. IS0 2566/l-1984 (E) Table 5 (concluded) - Conversion factors from 4 &to non-proportional gauge lengths Cross-sectional area of test piece mm* 400 410 420 430 440 450 460 470 480 490 500 550 600 650 700 750 800 850 900 950 100

37、0 1050 1 100 1150 1 200 1250 1300 1350 1400 1450 1500 1550 1600 1650 1700 1750 1800 1850 1900 1950 2000 2050 2100 2150 2200 2250 2 300 2350 2400 2450 2500 2550 2600 2650 2 700 2750 2800 2850 2900 2950 3000 Factor for non-proportional gauge length of: 200 mm 100 mm 80 mm 50 mm 0,693 0,914 0,999 1,206

38、 0,696 0,919 1,004 1,212 0,699 0,923 1,009 1,218 0,703 0,927 1,014 1,224 0,706 0,932 1,019 1,229 0,709 0,936 I,023 1,235 0,712 0,940 1,028 1,240 0,715 0,944 1,032 1,246 0,718 0,948 1,036 1,251 0,721 0,952 1,041 1,256 0,724 0,956 1,045 1,261 0,738 0,974 1,065 1,285 0,751 0,991 1,084 1,308 0,763 1,007

39、 1,101 1,329 0,775 1,022 1,118 1,349 0,786 1,036 1,133 1,368 0,796 1,050 1,148 1,385 0,805 1,063 1,162 1,402 0,815 1,075 1,175 1,418 0,824 1,087 1,188 1,434 0,832 1,098 1,200 1,449 0,8Jo 1,109 1,212 1,463 w= 1,119 1,223 1,477 0,856 1,129 1,234 1,490 0,863 1,139 1,245 1,502 0,870 1,148 1,255 1,515 0,

40、877 1,157 1,265 1,527 o,f= 1,166 1,275 1,538 0,890 1,174 1,284 v= 0,896 1,183 1,293 1,560 0,902 1,191 1,302 1,571 0,908 1,198 1,310 1,581 0,914 1,206 1,319 1,591 0,920 1,214 1,327 1,601 0,925 1,221 1,335 1,611 0,931 1,228 1,343 1,620 0,936 1,235 1,350 1,629 0,941 1,242 1,358 1,638 0,946 1,248 1,365

41、1,647 0,951 1,255 1,372 1,656 0,956 1,261 1,379 1,664 0,960 1,267 1,386 1,672 0,965 1,273 1,392 l,fj80 0,970 1,279 1,399 1,6= 0,974 1,285 1,405 1,696 0,979 1,291 1,412 1,704 0,983 1,297 1,418 1,711 0,987 1,302 1,424 1,719 0,991 1,308 1,430 1,726 0,995 1,313 1,436 1,733 0,999 1,319 1,442 1,740 1,003

42、1,324 VJ-48 1,747 1,007 1,329 1,453 1,754 1,011 1,334 1,459 1,760 1,015 1,339 ltJ6J 1,767 1,019 1,344 1,470 1,773 1,022 1,349 1,475 1,780 1,026 1,354 1,480 1,786 1,029 1,358 1,485 1,792 1,033 1,363 1,490 1,799 1,036 1,368 1,495 1,805 IS0 2566/l-1984 (E) Table 6 - Elongation values ) on 5,65& corresp

43、onding to those obtained on 4 & gauge length Actual elongation (%I 0 1 2 3 4 5 6 7 8 9 measured on46 Corresponding elongation (%I on 5,65a 10 9 10 10 11 12 13 14 15 16 17 20 17 18 19 20 21 22 23 23 24 25 30 26 27 28 29 30 30 31 32 33 34 40 35 36 37 37 38 39 40 41 42 43 50 43 44 45 46 47 48 49 50 50

44、51 I) Factor 0,87. Values rounded to nearest whole number. Table 7 - Elongation values ) on 5,65 & corresponding to those obtained on 50 mm gauge length Actual elongation (%I Corresponding elongation (%I on 5,65- gauge length if cross-sectional area on 50 mm in square millimetres is: gauge length 5

45、IO 20 40 60 80 IOO 150 200 250 300 400 500 600 700 800 900 1000 1200150020002500 18 31 27 24 21 19 18 17 16 15 14 14 13 12 12 12 11 11 11 IO 10 9 9 19 33 29 25 22 20 19 18 17 16 15 15 14 13 13 12 12 12 11 11 11 10 10 20 35 30 26 23 21 20 19 18 17 16 15 14 14 13 13 13 12 12 12 11 10 10 21 36 32 28 24

46、 22 21 20 18 17 17 16 15 14 14 14 13 13 13 12 12 11 11 22 38 33 29 25 23 22 21 19 18 17 17 16 15 15 14 14 13 13 13 12 12 11 23 40 35 30 26 24 23 22 20 19 18 18 17 16 15 15 14 14 14 13 13 12 12 24 42 36 32 27 25 24 23 21 20 19 18 17 17 16 15 15 15 14 14 13 13 12 25 43 38 33 29 26 25 24 22 21 20 19 18

47、 17 17 16 16 15 15 14 14 13 13 26 45 39 34 30 27 26 25 23 22 21 20 19 18 17 17 16 16 16 15 14 14 13 27 47 41 35 31 28 27 26 24 22 21 21 19 19 18 17 17 17 16 16 15 14 14 28 49 42 37 32 30 28 27 25 23 22 21 20 19 19 18 18 17 17 16 16 15 14 29 50 44 38 33 31 29 28 25 24 23 22 21 20 19 19 18 18 17 17 16

48、 15 15 30 52 45 39 34 32 30 29 26 25 24 23 22 21 20 19 19 18 18 17 17 16 15 31 54 47 41 35 33 31 30 27 26 25 24 22 21 21 20 19 19 19 18 17 16 16 32 55 48 42 37 34 32 30 28 27 25 24 23 22 21 21 20 20 19 19 18 17 16 33 57 50 43 38 35 33 31 29 27 26 25 24 23 22 21 21 20 20 19 18 17 17 34 59 51 45 39 36

49、 34 32 30 28 27 26 25 23 23 22 21 21 20 20 19 18 17 35 61 53 46 40 37 35 33 31 29 28 27 25 24 23 23 22 21 21 20 19 18 18 36 62 54 47 41 38 36 34 32 30 29 28 26 25 24 23 23 22 22 21 20 19 18 37 64 56 49 42 39 37 35 32 31 29 28 27 26 25 24 23 23 22 21 20 19 19 38 66 57 50 43 40 38 36 33 31 30 29 27 26 25 25 24 23 23 22 21 20 19 39 68 59 51 45 41 39 37 34 32 31 30 28 27 26 25 24 24 23 23 22 20 20 40 69 60 53 46 42 40 38 35 33 32 31 29 28 27 26 25 25 24 23 22 21 20 41 71 62 54 47 43 41 39 36 34 32 31 30 28 27 26 26 25 25 24 23 21 21 42 73 63 55 48 44 42 40 37 35 33 32 30 29 28 27 26