1、 ISO 2012 Hot-rolled carbon steel sheet as defined by chemical composition Tles en acier au carbone lamines chaud dfinies par leur composition chimique INTERNATIONAL STANDARD ISO 10384 Fourth edition 2012-12-15 Reference number ISO 10384:2012(E) ISO 10384:2012(E)ii ISO 2012 All rights reserved COPYR
2、IGHT PROTECTED DOCUMENT ISO 2012 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below
3、or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ISO 10384:2012(E) ISO 2012 All rights reserved iii Contents Page Foreword iv 1 Sco
4、pe . 1 2 Normative references 1 3 Terms and definitions . 1 4 Thickness . 2 5 Conditions of manufacture 2 5.1 Steelmaking . 2 5.2 Chemical composition 2 5.3 Chemical analysis 2 5.4 Application . 4 5.5 Mechanical properties and other tests . 4 5.6 Descaling 4 5.7 Surface condition 4 5.8 Oiling 5 6 Di
5、mensional and shape tolerances . 5 7 Workmanship 5 8 Inspection and acceptance . 5 9 Coil size . 5 10 Marking 5 11 Information to be supplied by the purchaser. 6 12 Report 6 ISO 10384:2012(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national stan
6、dards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International org
7、anizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given
8、 in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75
9、 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 10384 was prepared by Technical Committee ISO/TC 17, Stee
10、l, Subcommittee SC 12, Continuous mill flat rolled products. T h i s f o u r t h e d i t i o n c a n c e l s a n d r e p l a c e s t h e t h i r d e d i t i o n ( ISO 10384:2008), which has been technically revised.iv ISO 2012 All rights reserved INTERNATIONAL ST ANDARD ISO 10384:2012(E) Hot-rolled
11、carbon steel sheet as defined by chemical composition 1 Scope This International Standard applies to hot-rolled carbon steel sheet as defined by chemical composition. The product is generally used in the heat-treated condition after hot or cold working, press forming or cutting by the customer. For
12、example, the product is used for general machinery such as sprocket wheels, chain links, washers, knife blades and agricultural implements. NOTE 1 Hot-rolled sheet up to but not including 3 mm in thickness is commonly known as “sheet”. Hot-rolled sheet 3 mm and over in thickness is commonly known as
13、 either “sheet” or “plate”. NOTE 2 Steel sheet that is to be subjected to subsequent rerolling is not covered by this International Standard. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. Fo
14、r dated references, only the edition cited applies. For undated references, the latest edition of the reference document (including any amendments) applies. ISO 643, Steels Micrographic determination of the apparent grain size ISO 3887, Steels Determination of depth of decarburization ISO 4967, Stee
15、l Determination of content of nonmetallic inclusions Micrographic method using standard diagrams ISO 6507-1, Metallic materials Vickers hardness test Part 1: Test method ISO 6508-1, Metallic materials Rockwell hardness test Part 1: T est method (scales A, B, C, D, E, F, G, H, K, N, T) ISO 14284, St
16、eel and iron Sampling and preparation of samples for the determination of chemical composition ISO 16160, Hot-rolled steel sheet products Dimensional and shape tolerances 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 hot-rolled steel sheet
17、product obtained by rolling heated steel through a continuous hot strip mill or other hot rolling processes that produce a coiled product to the required sheet thickness and tolerances Note 1 to entry: The product has a surface covered with oxide or scale resulting from the hot rolling operation. 3.
18、2 hot-rolled descaled steel sheet hot-rolled steel sheet from which oxide or scale has been removed, usually by pickling in an acid solution Note 1 to entry: Descaling may also be performed by appropriate mechanical means. ISO 2012 All rights reserved 1 ISO 10384:2012(E) 3.3 mill edge normal edge wi
19、thout any definite contour produced in hot rolling Note 1 to entry: Mill edges can contain some irregularities such as cracked or torn edges or thin (feathered) edges. 3.4 sheared edge normal edge obtained by shearing, slitting or trimming a mill edge product Note 1 to entry: Normal processing does
20、not necessarily provide a definite positioning of the slitting burr. 4 Thickness 4.1 Hot-rolled carbon steel sheet based on chemical composition is manufactured from killed steel of the chemical compositions listed in Table 1. It is usually produced in the range of thicknesses from 0,8 mm to 12,5 mm
21、 inclusive, and in widths of 600 mm and over, in coils and cut lengths. 4.2 Hot-rolled carbon steel sheet less than 600 mm wide may be slit from wide sheet and will be considered as sheet. 5 Conditions of manufacture 5.1 Steelmaking Unless otherwise agreed by the interested parties, the processes us
22、ed in making the steel and in manufacturing hot-rolled sheet are left to the discretion of the manufacturer. On request, the purchaser shall be informed of the steelmaking process used. 5.2 Chemical composition The chemical composition (heat analysis) shall comply with the values given in Tables 1 a
23、nd 2. 5.3 Chemical analysis 5.3.1 Heat analysis An analysis of each heat of steel shall be carried out by the manufacturer to determine the percentage by mass of all elements listed in Tables 1 and 2. On request, this analysis shall be reported to the purchaser or his representative. 5.3.2 Product a
24、nalysis A product analysis may be carried out by the purchaser to verify the specified analysis of the product and shall take into consideration any normal heterogeneity. The permissible deviations between the specified heat analysis and the product analysis are shown in Tables 2 and 3. The sampling
25、 method shall be in accordance with ISO 14284. The requirements not specified in ISO 14284 shall be agreed upon by the manufacturer and purchaser at the time of ordering.2 ISO 2012 All rights reserved ISO 10384:2012(E) Table 1 Chemical composition (heat analysis) Mass fractions in percent Steel grad
26、e C Si a Mn P max. S max. S08C 0,10 max. 0,15 - 0,35 0,50 max. 0,030 0,035 S10C 0,08 - 0,13 0,15 - 0,35 0,30 - 0,60 0,030 0,035 S15C 0,13 - 0,18 0,15 - 0,35 0,30 - 0,60 0,030 0,035 S20C 0,18 - 0,23 0,15 - 0,35 0,30 - 0,60 0,030 0,035 S25C 0,22 - 0,28 0,15 - 0,35 0,30 - 0,60 0,030 0,035 S30C 0,27 - 0
27、,33 0,15 - 0,35 0,60 - 0,90 0,030 0,035 S35C 0,32 - 0,38 0,15 - 0,35 0,60 - 0,90 0,030 0,035 S38C 0,35 - 0,41 0,15 - 0,35 0,60 - 0,90 0,030 0,035 S40C 0,37 - 0,43 0,15 - 0,35 0,60 - 0,90 0,030 0,035 S43C 0,40 - 0,46 0,15 - 0,35 0,60 - 0,90 0,030 0,035 S45C 0,42 - 0,48 0,15 - 0,35 0,60 - 0,90 0,030 0
28、,035 S48C 0,45 - 0,51 0,15 - 0,35 0,60 - 0,90 0,030 0,035 S50C 0,47 - 0,53 0,15 - 0,35 0,60 - 0,90 0,030 0,035 S53C 0,50 - 0,56 0,15 - 0,35 0,60 - 0,90 0,030 0,035 S55C 0,52 - 0,58 0,15 - 0,35 0,60 - 0,90 0,030 0,035 S58C 0,55 - 0,61 0,15 - 0,35 0,60 - 0,90 0,030 0,035 aThe silicon may be supplied w
29、ithin the limits agreed upon at the time of inquiry and ordering. Table 2 Limits on additional chemical elements Mass fractions in percent Element Heat analysis max. Product analysis max. Cu a 0,20 0,23 Ni a 0,20 0,23 Cr a, b 0,15 0,19 Mo a, b 0,06 0,07 Nb c 0,008 0,018 V c 0,008 0,018 Ti c 0,008 0,
30、018 NOTE Each of the elements listed in this table should be included in the report of the heat analysis. When the amount of copper, nickel, chromium or molybdenum present is less than 0,02 %, the analysis may be reported as “ 0,02 %”. aThe sum of copper, nickel, chromium and molybdenum shall not ex
31、ceed 0,50 % on heat analysis. When one or more of these elements are specified, the sum does not apply; in which case, only the individual limits on the remaining elements apply. bThe sum of chromium and molybdenum shall not exceed 0,16 % on heat analysis. When one or more of these elements are spec
32、ified, the sum does not apply; in which case, only the individual limits on the remaining elements will apply. cHeat analysis values greater than 0,008 may be supplied after agreement between producer and purchaser. ISO 2012 All rights reserved 3 ISO 10384:2012(E) Table 3 Permissible deviations for
33、product analysis Mass fractions in percent Element Limit/maximum of specified element L Permissible deviation C L 0,15 002 003 , , 0,15 L 0,40 003 004 , , 0,40 L 0,61 003 005 , , Si L 0,35 0,05 Mn L 0,60 0,03 0,60 L 0,90 0,04 P L 0,030 + 0,01 S L 0,035 + 0,01 5.4 Application It is desirable that the
34、 specified product be identified for fabrication by name of the part or by intended application. Proper identification of the part may include visual examination, prints or description, or a combination of these. 5.5 Mechanical properties and other tests 5.5.1 Tensile strength and elongation of the
35、product are not generally specified because the product is subjected to heat treatment after delivery. 5.5.2 The purchaser may request the following tests for the product. In this case, test items, sampling and test method, if an appropriate International Standard has not been published, criteria of
36、 acceptance or rejection shall be agreed upon by the manufacturer and purchaser at the time of ordering. a) Depth of decarburization, see ISO 3887; b) content of non-metallic inclusions, see ISO 4967; c) austenitic grain size, see ISO 643; d) hardness, see ISO 6507-1 or ISO 6508-1; e) microscopic st
37、ructure. 5.6 Descaling If mechanical means are used for descaling, some increase in hardness and some loss of ductility can result. The purchaser should state whether descaling is required. 5.7 Surface condition Oxide or scale on hot-rolled steel sheet is subject to variations in thickness, adherenc
38、e and colour. Removal of the oxide or scale by pickling or blast cleaning can disclose surface imperfections not readily visible prior to this operation. Also, after drawing, imperfections can be visible which were not apparent in the flat sheet.4 ISO 2012 All rights reserved ISO 10384:2012(E) 5.8 O
39、iling As a deterrent to rusting, a coating of oil is usually applied to hot-rolled descaled steel sheet. However, sheet can be furnished not oiled if required. The oil is not intended as a drawing or forming lubricant and should be easily removable using degreasing chemicals. Hot-rolled descaled ste
40、el sheet can be ordered unoiled, if required, in which case, the supplier has limited responsibility if oxidation occurs. 6 Dimensional and shape tolerances 6.1 Dimensional tolerances applicable to thickness for grades S08C through S20C are given in ISO 16160. Nominal thickness tolerances for Grades
41、 S25C through S58C are given in Table 4. 6.2 All other dimensional and shape tolerances are given in ISO 16160. 7 Workmanship 7.1 The surface condition shall be that normally obtained in a hot-rolled product. 7.2 The material cut in lengths shall be free from lamination, surface flaws and other impe
42、rfections that are detrimental to the final product or to subsequent appropriate processing. 7.3 Processing for shipment in coils does not afford the manufacturer the opportunity of readily observing or removing imperfect portions as can be carried out on the cut length product. 8 Inspection and acc
43、eptance 8.1 While not usually required for products covered by this International Standard, when the purchaser specifies that inspection and tests for acceptance be observed prior to shipment from the manufacturers works, the manufacturer shall afford the purchasers inspector all reasonable faciliti
44、es to determine that the steel is being supplied in accordance with this International Standard. 8.2 Steel that is reported to be defective after arrival at the users works shall be set aside, identified and protected. The supplier shall be notified in order that an investigation can be carried out.
45、 9 Coil size When the product is ordered in coils, a minimum inside diameter (ID) or range of acceptable inside diameters shall be specified. In addition, the maximum outside diameter (OD) and the maximum acceptable coil mass shall be specified. 10 Marking Unless otherwise stated, the following mini
46、mum requirements for identifying the steel shall be legibly stencilled on the top of each lift or shown on a tag attached to each coil or shipping unit: a) the manufacturers name or identifying brand; b) the number of this International Standard; c) the quality designation; d) the order number; e) t
47、he product dimensions; ISO 2012 All rights reserved 5 ISO 10384:2012(E) f) the lot number; g) the mass. 11 Information to be supplied by the purchaser Inquiries and orders shall include the following information: a) the number of this International Standard, i.e. ISO 10384:2012; b) the name and grad
48、e of the material (e.g. hot-rolled carbon steel sheet for machinery grade S40C); c) the dimensions of the product and the quantity required; d) the application or name of the part, if possible (see 5.4); e) whether pickling (see 3.2) or descaling by grit or shot blasting (see 5.6) is required; mater
49、ial so specified will be oiled unless ordered unoiled (see 5.8); f) the type of edge (see 3.3 and 3.4); g) the report of the heat analysis, if required (see 5.3.1); h) limitations on masses and dimensions of individual coils and bundles, if applicable (see Clause 9); i) the inspections and tests, if any, required for acceptance prior to shipment to the manufacturers works (see 8.1). EXAMPLE A typical ordering description is as follows: ISO 10384:2012, hot-rolled carbon steel sheet for mach
