1、BRITISH STANDARD BS 6200-4: 1989 Sampling and analysis of iron, steel and other ferrous metals Part 4: Recommendations for the order of listing elements in the chemical analysis of steel UDC 001.818:543:669.114BS 6200-4:1989 This British Standard, having been prepared under the directionof the Iron
2、and Steel Standards Policy Committee, waspublished under the authorityof the Board of BSI andcomes into effect on 31 December 1989 BSI 09-1999 The following BSI references relate to the work on this standard: Committee reference ISM/18 Draft for approval 87/44207 DC ISBN 0 580 17826 9 Foreword This
3、Part of BS 6200 has been prepared under the direction of the Iron and Steel Standards Policy Committee. It is based on ISO/TR 6306:1989 “Chemical analysis of steel Order of listing elements”, published by the International Organization for Standardization (ISO) to which it is technically equivalent.
4、 It supersedes BS5259:1976, which is withdrawn. The sequence in which elements are listed in steel specifications and analysis reports has never been standardized and varies considerably between different organizations. Although this has always been a potential source of confusion, the cost and temp
5、orary inconvenience of standardizing the order has not been considered worthwhile. The modern tendency towards international standardization and the use of computers for storing, processing and retrieving information has greatly increased the case for standardizing the order of listing elements. Thi
6、s is particularly so when data from several sources are processed by a single computer. Consequently, there is a growing awareness of the long-term advantages of national and international standardization. Some measure of international agreement has already been achieved in steel specifications deve
7、loped by ISO/TC 17/SC 4, Heat treatable and alloy steels, for the first five elements and this has been incorporated into the recommendations given in this British Standard. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are resp
8、onsible for their correct application. Compliance with 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, pagesi andii, page1 and a back cover. This standard has been updated (see copyright date
9、) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date of issue CommentsBS 6200-4:1989 BSI 09-1999 i Contents Page Foreword Inside front cover 1 Scope 1 2 Recommendations 1ii blankBS 6200-
10、4:1989 BSI 09-1999 1 1 Scope This Part of BS 6200 gives recommendations for an order for listing elements determined in steels and most other iron-based alloys, excluding foundry irons, where the priorities are different. 2 Recommendations The elements are divided into four groups. These groups have
11、 no real technical significance but they are considered to provide the easiest means of readily remembering the recommended order. Group 1 includes the five elements that are regarded as the most important in all types of steel, in the order recommended by ISO/TC17/SC4. Also included in this group a
12、re the three elements of next greatest importance in alloy steels. These follow the first five arranged in alphabetical order of their chemical symbols. Group 2 includes another13 elements that are commonly determined in a wide variety of commercial steels. These are arranged in alphabetical order o
13、f their chemical symbols. Group 3 is reserved for any element not assigned a place in the set order. When more than one such element is determined they should be arranged in alphabetical order of their chemical symbols. Group 4 is reserved for hydrogen. The recommended order is thus as follows: a) C
14、 Si Mn P S Cr Mo Ni; b) Al As B Co Cu N Nb Pb Sn Ti V W Zr; c) Other elements determined, in alphabetical order of their chemical symbols; d) H. With the exception of hydrogen, elements should be reported in per cent by mass % (M/M) irrespective of the content. Hydrogen should be reported in microgr
15、ams per gram (4g/g).BS 6200-4: 1989 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Char
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