《AS-1442-1992.pdf》由会员分享，可在线阅读，更多相关《AS-1442-1992.pdf（18页珍藏版）》请在三一文库上搜索。
1、AS 14421992 Australian Standard Carbon steels and carbon-manganese steels Hot-rolled bars and semifinished products Defence Title allocated byCodification and StandardisationAuthority: METAL BARS, SHEETS AND SHAPES NATO Supply Classification 9500 Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 08 Jun 2
2、007 This Australian Standard was prepared by Committee MT/1, Iron and Steel. It was approved on behalf of the Council of Standards Australia on 31 August 1992 and published on 14 December 1992. The following interests are represented on Committee MT/1: Australian Chamber of Manufactures Australian F
3、oundry Institute Australian Institute of Steel Construction Bureau of Steel Manufacturers of Australia Confederation of Australian Industry Department of Defence Institute of Metals and Materials Australasia Metal Trades Industry Association of Australia Railways of Australia Committee Society of Au
4、tomotive Engineers, Australasia Additional interests participating in preparation of Standard: Manufacturing organizations Review of Australian Standards. To keep abreast of progress in industry, Australian Standards are subject to periodic review and are kept up to date by the issue of amendments o
5、r new editions as necessary. It is important therefore that Standards users ensure that they are in possession of the latest edition, and any amendments thereto. Full details of all Australian Standards and related publications will be found in the Standards Australia Catalogue of Publications; this
6、 information is supplemented each month by the magazine The Australian Standard, which subscribing members receive, and which gives details of new publications, new editions and amendments, and of withdrawn Standards. Suggestions for improvements to Australian Standards, addressed to the head office
7、 of Standards Australia, are welcomed. Notification of any inaccuracy or ambiguity found in an Australian Standard should be made without delay in order that the matter may be investigated and appropriate action taken. This Standard was issued in draft form for comment as DR 91121. Accessed by UNIVE
8、RSITY OF SOUTH AUSTRALIA on 08 Jun 2007 AS 14421992 Australian Standard Carbon steels and carbon-manganese steels Hot-rolled bars and semifinished products First published in part as AS G71961. Second edition 1966. Third edition 1968. AS G26 first published 1968. AS G71968 and AS G261968 revised, am
9、algamated and redesignated AS 14421973. Second edition 1979. Third edition 1983. Fourth edition 1992. PUBLISHED BY STANDARDS AUSTRALIA (STANDARDS ASSOCIATION OF AUSTRALIA) 1 THE CRESCENT, HOMEBUSH, NSW 2140 ISBN 0 7262 7833 5 Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 08 Jun 2007 AS 144219922 PREF
10、ACE This Standard was prepared under the direction of the Multitechnics Standards Policy Board by the Standards Australia Committee on Iron and Steel, to supersede AS 1442 1983. To reflect changes in steel making technology and to meet industry requirements, the steel grades have been revised and gr
11、ade prefix letters M and U introduced to indicate steel quality. The use of prefix letters K, CS, S and R to indicate deoxidation practice has been discontinued. This edition allows the addition of micro-alloying elements to fully-killed grades to give improved mechanical properties. It also introdu
12、ces requirements for the maximum depth of surface imperfections for three quality levels of surface condition. The cross-sectional dimension tolerances for round and square bars have been revised to be compatible with those specified in AS 3679.1, Structural steel Hot-rolled bars and sections. The c
13、hanges made to this edition are intended to bring the Standard into closer alignment with equivalent Standards of the major industrialized countries. CONTENTS Page 1SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 2REFERENCED DOCUMENTS .
14、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 3DEFINITIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 4DESIGNATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 5MATERIALS. . . . .
15、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 6FREEDOM FROM DEFECTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 7SURFACE DRESSING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 8TENSILE TEST . . .
16、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 9DIMENSIONAL TOLERANCES FOR RODS AND BARS . . . . . . . . . . . . . . . .6 10ROUNDING OF TEST RESULT VALUES. . . . . . . . . . . . . . . . . . . . . . . . . .7 11MARKING . . . . . . . . . . . . . . . . . . . . .
17、. . . . . . . . . . . . . . . . . . . . . . . . . . . .7 APPENDICES APURCHASING GUIDELINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 BMEANS FOR DEMONSTRATING COMPLIANCE WITH THIS STANDARD.13 CREQUIREMENTS FOR MAXIMUM SURFACE IMPERFECTION DEPTH AND RECOMMENDED MACHININ
18、G ALLOWANCES . . . . . . . . . . . . . . . . . . . . .14 CopyrightSTANDARDS AUSTRALIA Users of Standards are reminded that copyright subsists in all Standards Australia publications and software. Except where the Copyright Act allows and except where provided for below no publications or software pr
19、oduced by Standards Australia may be reproduced, stored in a retrieval system in any form or transmitted by any means without prior permission in writing from Standards Australia. Permission may be conditional on an appropriate royalty payment. Requests for permission and information on commercial s
20、oftware royalties should be directed to the head office of Standards Australia. Standards Australia will permit up to 10 percent of the technical content pages of a Standard to be copied for use exclusively in-house by purchasers of the Standard without payment of a royalty or advice to Standards Au
21、stralia. Standards Australia will also permit the inclusion of its copyright material in computer software programs for no royalty payment provided such programs are used exclusively in-house by the creators of the programs. Care should be taken to ensure that material used is from the current editi
22、on of the Standard and that it is updated whenever the Standard is amended or revised. The number and date of the Standard should therefore be clearly identified. The use of material in print form or in computer software programs to be used commercially, with or without payment, or in commercial con
23、tracts is subject to the payment of a royalty. This policy may be varied by Standards Australia at any time. Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 08 Jun 2007 3AS 14421992 STANDARDS AUSTRALIA Australian Standard Carbon steels and carbon-manganese steelsHot-rolled bars and semifinished product
24、s 1 SCOPE This Standard specifies requirements for carbon steel and carbon-manganese steel rods, bars, blooms, billets and slabs, delivered in the as-rolled or normalized condition, for forging and for general engineering purposes. It specifies chemical composition requirements for all grades, and t
25、ensile strength requirements for grades required to meet mechanical properties. The Standard permits the addition of boron and micro-alloying elements for the achievement of special properties. The Standard also specifies requirementsfor the maximum depth of surface imperfections and gives recommend
26、ed machining allowances for bars of various sizes. NOTES: 1Advice and recommendations on information to be supplied by the purchaser at the time of enquiry or order are contained in Appendix A. 2Alternative means for determining compliance with this Standard are given in Appendix B. 2 REFERENCED DOC
27、UMENTS The following documents are referred to in this Standard: AS 1050Methods for the analysis of iron and steel 1199Sampling procedures and tables for inspection by attributes 1213Iron and steel Methods of sampling 1391Methods for tensile testing of metals 1399Guide to AS 1199 Sampling procedures
28、 and tables for inspection by attributes 1443Carbon steels and carbon-manganese steels Cold-finished bars 1733Methods for the determination of grain size in metals 2338Preferred dimensions of wrought metal products 2706Numerical values Rounding and interpretation of limiting values 3900Quality syste
29、ms Guide to selection and use 3904Quality management and quality system elements K1Methods for the sampling and analysis of iron and steel ISO 2566Steel Conversion of elongation values 2566/1Part 1: Carbon and low alloy steels Guide 44General rules for ISO or IEC international third-party certificat
30、ion scheme for products 3 DEFINITIONS For the purpose of this Standard, the definitions below apply. 3.1 Bara finished product of solid section which may have rectangular, square, round or hexagonal cross- section, defined as follows: (a)Flat bars (flats)bars of rectangular cross-section, 3 mm or gr
31、eater in thickness and less than 600 mm in width, supplied in straight lengths or coils and having edges of controlled contour. (b) Hexagonal bars (hexagons) bars of regular hexagonal cross-section supplied in straight lengths or coils. (c)Square bars (squares) bars of square cross-section supplied
32、in straight lengths or coils. (d) Round bars (rounds) bars of circular cross-section supplied in straight lengths or coils. 3.2 Billeta semifinished forged, rolled or continuously-cast product intended for processing into finished products by further forging or rolling. The cross-section is usually
33、square or rectangular, with dimensions not greater than 165 mm 165 mm (or equivalent cross-sectional area), and the width-to-thickness ratio is less than 4:1. 3.3 Blooma semifinished forged, rolled or continuously-cast product intended for further rolling or forging. The cross-section is square or r
34、ectangular, with dimensions greater than 165 mm 165 mm (or equivalent cross- sectional area), and the width-to-thickness ratio is less than 4:1. 3.4 Fully killed steelsteel deoxidized with a strong deoxidizing agent such as silicon or aluminium in order to reduce the oxygen content to prevent a reac
35、tion between carbon and oxygen during solidification. COPYRIGHT Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 08 Jun 2007 AS 144219924 3.5 Merchant quality steelproduct having wider carbon and manganese ranges than those of specified carbon steels (see Table 1). It is not subject to product analysis
36、tolerances, grain size requirements or modification with special additions. 3.6 Out-of-hexagon the greatest difference between the three dimensions measured at the same cross-section across opposite flats of the hexagon. 3.7 Out-of-roundthe difference between the maximum and minimum diameters of the
37、 bar, measured at the same cross-section. 3.8 Out-of-squarethe difference between the two dimensions at the same cross-section across opposite flats of the square. 3.9 Primary rolled productsteel product produced in a primary mill by the direct hot-rolling of an ingot or from a continuously cast blo
38、om. 3.10 Roda semifinished or finished product of approximately circular cross-section produced in coils. 3.11 Slaba semifinished forged, rolled or continuously-cast product intended for rolling orforging. The cross- section is rectangular, with the thickness greater than 50 mm and the width-to-thic
39、kness ratio equal to or greater than 4:1. 3.12 Test batchfinished steel of the same size, produced from the same cast and from the same heat treatment batch. 3.13 Test samplea portion of material or product, or a group of items selected from a test batch by a sampling procedure. 3.14 Test specimena
40、portion or a single item taken from the test sample for the purpose of applying a particular test. 3.15 Test piecea prepared piece for testing, made from a test specimen. 3.16 Normative appendixan appendix which is essential to the understanding or implementation of the Standard. 3.17 Informative ap
41、pendixan appendix giving additional information, recommendations, guidelines or other non-mandatory statements. 4 DESIGNATION 4.1 General The steel designation shall comprise the number of this Australian Standard, i.e. AS 1442, followed by a slash and additional characters in accordance with Clause
42、s 4.2 and 4.3. Additional designations for surface condition and austenitic grain size are given in Clauses 4.4 and 4.5. 4.2 For steels suppliedto chemical composition only The designation of steel supplied to a specified chemical composition shall be in accordance with the following: (a)A prefix le
43、tter, if applicable, as follows: M:Merchant quality steel U:Unspecified deoxidation X:Major deviation in chemical composition of any grade from the corresponding AISI-SAE grade NOTE: Information on AISI-SAE grades is given in the relevant steel products manual of the American Iron and Steel Institut
44、e. (b) A four-digit series designation, as follows, wherein the first two digits of the number indicate the type of steel and the last two digits indicate the approximate mean of the specified carbon range: 10XX: Plain carbon steels 11XX: Sulfurized free-cutting carbon steels 12XX: Phosphorized and
45、sulfurized free-cutting carbon steels 13XX: Carbon-manganese steels NOTE: The double X has no significance other than to indicate the position for digits to be added. (c)Modification symbols may be added to the series designation as follows: (i)For lead-bearing steels, the letter L is used to indica
46、te that the steel contains lead and is placed between the second and third characters of the four-digit series designation. (ii)For aluminium-killed steels, the letter A is placed between the second and third characters of the four-digit series designation. (iii) For boron-treated steels, the letter
47、 B is placed between the second and third characters of the four- digit series designation. (iv) For micro-alloyed steels, the letter M is placed between the second and third characters of the four- digit series designation. Examplesofdesignation:AS1442/12L14,AS1442/10A08,AS 1442/10B22,AS1442/10M40,
48、 AS 1442/X1038. COPYRIGHT Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 08 Jun 2007 5AS 14421992 4.3 For steels supplied to chemical composition and mechanical properties The designation of steel supplied to chemical composition and mechanical properties shall consist of the following: (a)The prefix
49、letter U, if applicable (see Clause 4.2(a). (b) A number 1, 3, 4, 5, 6, 8, 9 or 10 to indicate the steel grade. Examples of designation: AS 1442/U5, AS 1442/5. 4.4 Surface condition The surface condition resulting from the mill is normally of commercial quality. Where a special condition is required, it is indicated by either of the following suffix letters: B:Intermediate surface condition suitable for cold drawn products, heat-treated products and forgings other than upset or drop-forged products. F:Surface condition suit