1、 ISO 2013 Hot-rolled steel plates Tolerances on dimensions and shape Tles en acier lamines chaud Tolrances sur les dimensions et la forme INTERNATIONAL STANDARD ISO 7452 Third edition 2013-01-15 Reference number ISO 7452:2013(E) ISO 7452:2013(E)ii ISO 2013 All rights reserved COPYRIGHT PROTECTED DOC
2、UMENT ISO 2013 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 or ISOs member bod
3、y 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 7452:2013(E) ISO 2013 All rights reserved iii Contents Page Foreword iv 1 Scope . 1 2 Normative
4、references 1 3 T erms and definitions . 1 4 Information to be supplied by the purchaser. 2 4.1 General . 2 4.2 Options . 2 5 Form of supply 2 5.1 Selection of tolerances, edge camber and out-of-squareness 2 5.2 Absence of information . 3 6 Tolerances and dimensions . 3 6.1 Thickness . 3 6.2 Width .
5、3 6.3 Length . 3 7 Tolerances on shape 3 7.1 Edge camber and out-of-squareness . 3 7.2 Flatness 4 8 Measurements . 4 8.1 General . 4 8.2 Thickness . 4 8.3 Width . 4 8.4 Length . 4 8.5 Edge camber 5 8.6 Out-of-squareness 5 8.7 Flatness 5 Annex A (normative) Tolerance values 7 Annex B (normative) Addi
6、tional tolerance values 10 Bibliography .14 ISO 7452:2013(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical commi
7、ttees. 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 organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the I
8、nternational Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft Internationa
9、l 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 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the
10、 subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 7452 was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 3, Steels for structural purposes. This third edition cancels and replaces the second edition ( ISO 7452:2002), w
11、hich has been technically revised.iv ISO 2013 All rights reserved INTERNATIONAL ST ANDARD ISO 7452:2013(E) Hot-rolled steel plates Tolerances on dimensions and shape 1 Scope This International Standard specifies requirements for tolerances for hot-rolled steel plates made on a reversing mill with th
12、e following characteristics: a) nominal thickness: 3 mm t 400 mm; b) nominal width: w 600 mm. NOTE 1 Tolerances for products of width 600 mm, cut or slit from plate, may be agreed between the manufacturer and purchaser at the time of ordering. This International Standard applies to, but is not limit
13、ed to, steel grades defined in all parts of ISO 630, in ISO 9328-1 to ISO 9328-6 and in ISO 683-1, ISO 683-2, ISO 683-10 and ISO 683-11. This International Standard does not apply to stainless steel. If not otherwise agreed, the tables in Annex A apply to steel grades defined in Annex A of all parts
14、 (except Part 1) of ISO 630 or in ISO 9328-1 to ISO 9328-6. If not otherwise agreed, the tables in Annex B apply to steel grades defined in Annex B of all parts (except Part 1) of ISO 630 or in ISO 9328-1 to ISO 9328-6. For steel grades defined in ISO 683-1, ISO 683-2, ISO 683-10 and ISO 683-11, the
15、 selection of Annex A or B is done at the time of enquiry and order. This International Standard does not include continuous mill products, custom-made plate, checker plate or bulb plate for flooring or wide flats. This International Standard does not include the following steel products, which are
16、covered by other International Standards: sheet and strip refer to ISO/TC 17 /SC 12 “Continuous mill flat rolled products”; tubular products refer to ISO/TC 5/SC 1 “Steel tubes”. NOTE 2 Lists of standards covered by ISO/TC 17 /SC 12 and ISO/TC 5/SC 1 are available on the ISO Website. 2 Normative ref
17、erences The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 6929, Steel products Vocabulary 1) 3
18、T erms an d definiti ons For the purposes of this document, the terms and definitions given in ISO 6929 apply. 1) To be published. (Revision of ISO 6929:1987) ISO 2013 All rights reserved 1 ISO 7452:2013(E) 4 Information to be supplied by the purchaser 4.1 General The following information shall be
19、supplied by the purchaser at the time of enquiry and order: a) description of the product (plate); b) selection of Annex A or B of ISO 7452; c) nominal thickness, in millimetres; d) the thickness tolerance table and class required (see 6.1); e) nominal width and width tolerance table to be applied (
20、see 6.2); f) nominal length and length tolerance table to be applied (see 6.3); g) the flatness tolerance table to be applied (see 7.2). If no information concerning points a) to g) is given by the purchaser , the supplier shall refer back to the purchaser. 4.2 Options A number of options are specif
21、ied. In the event that the purchaser does not indicate his wish to implement any of these options, the supplier shall supply the products in accordance with the basic specifications of this International Standard (see 5.2): a) whether untrimmed edges (letter NK) are required; when NK is specified, t
22、he maximum length and width shall be agreed; b) whether a limited edge camber and out-of-straightness (letter G) is required; when G is specified, the maximum tolerances for camber and out-of-squareness shall be agreed; c) whether tolerances on length for plates with a nominal length 20 000 mm are r
23、equired (see Table A.3). 5 Form of supply 5.1 Selection of tolerances, edge camber and out-of-squareness Plate according to this International Standard can be supplied with: thickness tolerances according to Table A.1, B1 (class D) or B.2 (classes A, B and C) (see 6.1); width tolerances according to
24、 Table A.2 or B.3; length tolerances according to Table A.3 or B.4; trimmed edges or with untrimmed edges (NK); normal or limited edge camber and out-of-squareness (G); normal (N) flatness tolerances (see Table A.4 or B.5) or special (S) flatness tolerances (see Table A.5).2 ISO 2013 All rights rese
25、rved ISO 7452:2013(E) 5.2 Absence of information In the absence of information in the order of code letters for the supply, plate shall be supplied as follows: trimmed edges in accordance with 6.2; edge camber and out-of-squareness in accordance with 7.1. 6 Tolerances and dimensions 6.1 Thickness To
26、lerances on thickness are given in Tables A.1, B.1 and B.2. Plates may be supplied to any of the following classes: Class A: for thickness tolerances depending on the nominal thickness; Class B: for a fixed minus tolerance of 0,3 mm; Class C: for a fixed minus tolerance of 0,0 mm; Class D: for symme
27、trical tolerances. NOTE The special provision applicable to ground parts of the surface of the plates are given in the International Standards for the corresponding products. 6.2 Width For trimmed edges, the requirements on width tolerances are given in Tables A.2 and B.3. For untrimmed edges, see 4
28、.2 Option a). 6.3 Length Tolerances on length are given in Tables A.3 and B.4. 7 Tolerances on shape 7.1 Edge camber and out-of-squareness The edge camber and the out-of-squareness of a plate shall be limited so that it shall be possible to inscribe a rectangle with the dimensions of the ordered pla
29、te, within the size of the delivered products. ISO 2013 All rights reserved 3 ISO 7452:2013(E) 7.2 Flatness See Figure 1. The requirements on flatness tolerances are given in Tables A.4, A.5 and B.5. NOTE It is pointed out that bad handling and storage can adversely affect the flatness of the produc
30、t. Key 1 Straight edge 2 Plate aWave pitch bFlatness Fig u r e 1 M easur ing of f la t n ess on w ave pi t c h 8 Measurements 8.1 General Measurements shall be carried out at ambient temperature. 8.2 Thickness For plates with trimmed edges, thickness shall be measured at any point situated more than
31、 25 mm from the transverse or longitudinal edges of the plate, other than locally ground areas (see the NOTE in 6.1). For plates with untrimmed edges, the measuring points shall be agreed upon at the time of enquiry and order. 8.3 Width Width shall be measured perpendicular to the major axis of the
32、plate. 8.4 Length The length of the plate is the length of the shorter of both longitudinal edges.4 ISO 2013 All rights reserved ISO 7452:2013(E) 8.5 Edge camber The edge camber value, q, is the maximum deviation between the longitudinal edge and the straight line joining the two ends of this edge.
33、It is measured on the concave edge of the plate (see Figure 2). 8.6 Out-of-squareness The out-of-square value, u, is the orthogonal projection of one transverse edge on one longitudinal edge (see Figure 2). Dimensions in millimetres Key a 200 mm for flatness tolerances in accordance with Tables A.4
34、and B.5 or 100 mm for flatness tolerances in accordance with Table A.5 q edge camber u out-of-squareness Fig u r e 2 M easur ing of e d ge c a m b e r, ou t - of - s qu a r e a nd f l at ne s s 8.7 Flatness To measure flatness the plates shall be placed on a flat surface at the end of production lin
35、e. Deviation from flatness shall be determined by measuring the deviation in distance between the plates and a straight edge of length 1 000 mm, 2 000 mm or 4 000 mm (see Tables A.4, A.5 and B.5) which may be placed in any direction. Only the part situated between two points of contact between the s
36、traight edge and the plate shall be taken into consideration. Deviations shall be measured at a point at least 25 mm for the longitudinal edges and at a distance of at least 200 mm (for normal tolerances in accordance with Table A.4 or B.5) or 100 mm (for special tolerances in accordance with Table
37、A.5) from the plate ends (see Figure 2). The measuring length of 1 000 mm is used when the wave pitches (distance between the points of contact the straight edges and the plate) are smaller or equal to 1 000 mm. For longer wave pitches, ISO 2013 All rights reserved 5 ISO 7452:2013(E) straight edges
38、of 2 000 mm or 4 000 mm are used. Deviation from flatness smaller or equal 2 mm shall not be considered as a wave and not be taken into account.6 ISO 2013 All rights reserved ISO 7452:2013(E) Annex A (normative) Tolerance values A.1 Tolerances on thickness For tolerances on thickness, Table A.1 appl
39、ies. Table A.1 Tolerances on thickness Dimensions in millimetres Nominal thickness Class A Class B Class C Class D lower upper lower upper lower upper lower upper 3 t 5 0,3 +0,7 0,3 +0,7 0 +1,0 0,5 +0,5 5 t 8 0,4 +0,8 0,3 +0,9 0 +1,2 0,6 +0,6 8 t 15 0,5 +0,9 0,3 +1,1 0 +1,4 0,7 +0,7 15 t 25 0,6 +1,0
40、 0,3 +1,3 0 +1,6 0,8 +0,8 25 t 40 0,7 +1,3 0,3 +1,7 0 +2,0 1,0 +1,0 40 t 80 0.9 +1,7 0,3 +2,3 0 +2,6 1,3 +1,3 80 t 150 1,1 +2,1 0,3 +2,9 0 +3,2 1,6 +1,6 150 t 250 1,2 +2,4 0,3 +3,3 0 +3,6 1,8 +1,8 250 t 400 1,3 +3,5 0,3 +4,5 0 +4,8 2,4 +2,4NOTE These thickness tolerances apply to other than locally
41、ground areas. A.2 Tolerances on width For tolerances on width, Table A.2 applies. Table A.2 Tolerances on width Dimensions in millimetres Nominal thickness t Tolerances lower upper t 40 0 +20 40 t 150 0 +25 150 t 400 0 +30 ISO 2013 All rights reserved 7 ISO 7452:2013(E) A.3 Tolerances on length For
42、tolerances on length, Table A.3 applies. Table A.3 Tolerances on length Dimensions in millimetres Nominal length l Tolerances lower upper 600 l 20 000 mm shall be agreed upon at the time of enquiry and order see Clause 4.2, Option c). A.4 Normal t oler anc es on flatness (class N) The steel types in
43、 accordance with Table A.4 are defined as follows: steel type L: products with a specified minimum yield strength R e 460 MPa, neither quenched nor quenched and tempered; steel type H: products with a specified minimum yield strength R e 460 MPa and/or all grades of quenched and quenched and tempere
44、d products. T able A .4 Nor m a l t ole r a nc e s on f la t n ess ( cla ss N) Dimensions in millimetres Nominal thickness t Steel type L Steel type H Measuring length a 1 000 2 000 4 000 1 000 2 000 4 000 3 t 5 9 14 28 12 17 34 5 t 8 8 12 24 11 15 30 8 t 15 7 11 22 10 14 28 15 t 25 7 10 20 10 13 26
45、 25 t 40 6 9 18 9 12 24 40 t 250 58 16 8 12 24 250 t 400 6 9 18 9 13 26 aUse 1 000 mm measuring length when wave pitch is 1 000 mm.8 ISO 2013 All rights reserved ISO 7452:2013(E) A.5 Special t oler anc es on flatness (class S) The steel types in accordance with Table A.5 are defined as follows: stee
46、l type L: products with a specified minimum yield strength R e 460 MPa, neither quenched nor quenched and tempered; steel type H: products with a specified minimum yield strength R e 460 MPa and/or all grades of quenched and quenched and tempered products. T able A .5 Sp ec ia l t ole r a nc e s on
47、f la t n ess ( cla ss S) Dimensions in millimetres Nominal thickness t Steel type L Steel type H Measuring length a 1 000 2 000 4 000 1 000 2 000 4 000 3 t 5 5 10 20 7 14 28 5 t 8 5 10 20 7 13 26 8 t 15 3 6 16 7 12 24 15 t 25 3 6 12 7 11 22 25 t 40 3 6 12 7 11 20 40 t 250 3 6 12 6 10 20 250 t 400 47
48、 14 7 11 22 aUse 1 000 mm measuring length when wave pitch is 1 000 mm. ISO 2013 All rights reserved 9 ISO 7452:2013(E) Annex B (normative) Additional tolerance values B.1 Tolerances on thickness (class D) For tolerances on thickness (class D), Table B.1 applies. Table B.1 Range of tolerances on thi
49、ckness (class D) Dimensions in millimetres Nominal thickness t Nominal width, w w 2 000 2 000 w 4 000 4 000 w lower upper lower upper lower upper 4 t 5 - 0,60 + 0,60 - 0,65 + 0,65 5 t 8 - 0,60 + 0,60 - 0,75 + 0,75 8 t 15 - 0,65 + 0,65 - 0,80 + 0,80 - 0,90 + 0,90 15 t 25 - 0,75 + 0,75 - 0,95 + 0,95 - 1,10 + 1,10 25 t 40 - 0,80 + 0,80 - 1,00 + 1,00 - 1,20 +
