ISO 630-5-2014 Structural steels - Part 5 Technical delivery conditions for structural steels with improved atmospheric corrosion resistance《结构钢 第5部分 改良耐大气腐蚀结构钢.pdf

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1、 ISO 2014 Structural steels Part 5: Technical delivery conditions for structural steels with improved atmospheric corrosion resistance Aciers de construction Partie 5: Conditions techniques de livraison pour aciers de construction rsistance amliore la corrosion atmosphrique INTERNATIONAL STANDARD IS

2、O 630-5 First edition 2014-09-15 Reference number ISO 630-5:2014(E) ISO 630-5:2014(E)ii ISO 2014 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means,

3、 electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20

4、 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ISO 630-5:2014(E) ISO 2014 All rights reserved iii Contents Page Foreword iv 1 Scope . 1 2 Normative references 1 3 T erms and definitions . 1 4 Classification and designation . 2 4.1 Class

5、ification . 2 4.2 Grades and qualities . 2 4.3 Normative annexes 3 5 Information to be supplied by purchaser . 3 5.1 Mandatory information . 3 5.2 Options . 3 6 Requirements 3 6.1 General . 3 6.2 Steelmaking process . 3 6.3 Delivery condition 3 6.4 Chemical composition 4 6.5 Mechanical properties 4

6、6.6 Surface conditions 4 6.7 Internal soundness 5 6.8 Dimensions and tolerances on dimensions, shape, and mass 5 7 Inspection 5 8 S ampling F r equency of t esting . 5 8.1 Verification . 5 8.2 Test units 5 9 Test methods . 5 10 Mar king 5 Annex A (normative) St eel gr ades S235W , S355W , S355WP: Ch

7、emical c omposition and mechanical properties . 6 Annex B (normative) St eel gr ades SG245, SG345, SG365, SG400, SG460, SG500, AND SG700: Chemical composition and mechanical properties .11 Annex C (informative) Notes on weldability 16 Annex D (informative) Additional information for the use of steel

8、 with improved atmospheric corrosion resistance 17 Bibliogr aph y .18 ISO 630-5:2014(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

9、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 organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO coll

10、aborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different appro

11、val criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the s

12、ubject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any t

13、rade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the

14、 Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information The committee responsible for this document is ISO/TC 17, Steel, Subcommittee SC 3, Steels for structural purposes. This first edition of ISO 630-5 cancels and replaces ISO 4952:2006, of which it constitut

15、es a technical revision. ISO 630 consists of the following parts, under the general title Structural steels: Part 1: General technical delivery conditions for hot-rolled products Part 2: Technical delivery conditions for non alloy structural steels for general purposes Part 3: Technical delivery con

16、ditions for fine-grain structural steels Part 4: Technical delivery conditions for high-yield-strength quenched and tempered structural steels plates Part 5: Technical delivery conditions for structural steels with improved atmospheric corrosion resistance Part 6: Technical delivery conditions for s

17、eismic improved structural steels for buildingiv ISO 2014 All rights reserved INTERNATIONAL ST ANDARD ISO 630-5:2014(E) Structural steels Part 5: Technical delivery conditions for structural steels with improved atmospheric corrosion resistance 1 Scope This part of ISO 630 specifies qualities for st

18、eels with improved atmospheric corrosion resistance for general structural use. It applies to steel plates rolled on a reversing mill, wide flats, hot-rolled sections and bars, which are used in the usual delivery conditions as given in 6.3, and normally intended for welded or bolted structures. Thi

19、s part of ISO 630 covers nine (9) grades and four (4) qualities. Grades S235 and S355 are covered in Annex A. Grades SG245, SG345, SG365, SG400, SG460, SG500, and SG700 are covered in Annex B. Not all grades are available in all qualities, and some qualities have Charpy V-notch requirements. This pa

20、rt of ISO 630 does not include the following structural steels, certain of which are covered by other International Standards: sheet and strip refer to ISO TC 17/S C 12 “Continuous mill flat rolled products”; tubular products refer to ISO TC 5/SC 1 “Steel tubes”. 2 Normative references The following

21、 documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 630-1, Structura

22、l steels Part 1: General technical delivery conditions for hot-rolled products ISO 643, Steels Micrographic determination of the apparent grain size ISO 4948-2, Steels Classification Part 2: Classification of unalloyed and alloy steels according to main quality classes and main property or applicati

23、on characteristics ISO 10474, Steel and steel products Inspection documents 3 T erms an d definiti ons For the purposes of this document, the following terms and definitions apply. 3.1 as-rolled steel without any special rolling and/or heat treatment condition 3.2 f i ne g rain steel with fine grain

24、 structure with an equivalent index of grain size 6 Note 1 to entry: See 6.2. Note 2 to entry: For the determination of grain size, see ISO 643. ISO 2014 All rights reserved 1 ISO 630-5:2014(E) 3.3 normalized rolled steel rolled with a process in which the final deformation is carried out in a certa

25、in temperature range leading to a material condition equivalent to that obtained after normalizing, so that the specified values of the mechanical properties are retained after normalizing Note 1 to entry: In international publications for both the normalized rolling, as well as the thermomechanical

26、 rolling, the expression “controlled rolling” can be found. 3.4 normalized steel produced by heating to a suitable temperature above the transformation range and then cooling in air, to a temperature substantially below the transformation range 3.5 quenc h i n g operation which consists of cooling a

27、 ferrous product more rapidly than in still air from a high temperature above Ac 1 Note 1 to entry: Ac 1is the temperature at which austenite begins to form during heating. 3.6 steel with improved atmospheric corrosion resistance steel in which a certain number of alloying elements, such as P, Cu, C

28、r, Ni, etc., have intentionally been added in order to increase its resistance to atmospheric corrosion, by forming an auto-protective oxide layer on the base metal; these steels are commonly known as “weathering steels” 3.7 t em p er i n g heat treatment applied to a ferrous product, generally afte

29、r quench hardening, or another heat treatment to bring the properties to the required level, and consisting of heating to specific temperatures (Ac 1 ) and soaking one or more times, followed by cooling at an appropriate rate Note 1 to entry: Additionally, the processes of direct quenching plus temp

30、ering may apply. 3.8 thermomechanical processed steel rolled with a process in which the final deformation is carried out in a certain temperature range leading to a material condition with certain properties which cannot be achieved or repeated by heat treatment alone Note 1 to entry: Hot forming o

31、r post weld heat treatment above 580 C can lower the strength values and should not be performed. Flame straightening can be applied in accordance with relevant technical recommendations. Note 2 to entry: Thermomechanical rolling can include processes with an increasing cooling rate with or without

32、tempering, including self-tempering, but excluding direct quenching and quenching and tempering. Note 3 to entry: In some publications, the term “Thermomechanical Control Process” is also used. 4 Classific ation and designation 4.1 Classification Steel grades specified in this part of ISO 630 shall

33、be classified as alloy steels according to ISO 4948-2. 4.2 Grades and qualities This part of ISO 630 specifies nine (9) steel grades; grades S235 and S355 are specified in Annex A. Grades SG245, SG345, SG365, SG400, SG460, SG500, and SG700 are specified in Annex B. Each grade is available in up to f

34、our (4) qualities. These grades and qualities differ in their specified mechanical properties and 2 ISO 2014 All rights reserved ISO 630-5:2014(E) impact energy requirements. Grades S355 and SG345 are subdivided into classes W and WP which differ primarily in their phosphorus contents; grades SG245,

35、 SG365, and SG460 are subdivided into classes W1 and W2 which differ primarily in alloying element requirements for Si, Cr, Cu, and Ni (see Table B.1). Class W denotes weathering steel; class WP denotes weathering steel with higher levels of phosphorus. Quality A: no impact testing Quality B: impact

36、 testing at +20 C Quality C: impact testing at 0 C Quality D and D1: impact testing at 20 C NOTE Quality D1 specifies a higher minimum impact energy than D. 4.3 Normative annexes The requirements of Annex A or Annex B are to be regarded separately. Each is independent of the other without combining

37、in any way. 5 Information to be supplied by purchaser 5.1 Mandatory information The information that shall be supplied by the purchaser at the time of the order is specified in ISO 630-1. 5.2 Options The options of ISO 630-1 apply. In addition, the following options apply to products according to IS

38、O 630-5. If the purchaser does not indicate a wish to implement any of these options at the time of order, the products shall be supplied in accordance with the basic specification (see 5.1). required delivery condition; testing of impact properties in transverse direction using Charpy V-notch test

39、pieces, in accordance with ISO 630-1. 6 Requirements 6.1 General See ISO 630-1. 6.2 St eelmaking pr oc ess See ISO 630-1. If a special steelmaking process has been specified, this shall be reported in the inspection document. 6.3 Delivery condition At the manufacturers discretion, the products cover

40、ed by this specification are delivered in the as-rolled, normalized rolled, normalized, thermomechanical processed, or quenched and tempered condition. If an inspection document is required, the delivery condition shall be indicated therein. ISO 2014 All rights reserved 3 ISO 630-5:2014(E) 6.4 Chemi

41、cal composition 6.4.1 Heat analysis The chemical composition determined by heat analysis shall comply with the specified values of Table A.1 or Table B.1. 6.4.2 Product analysis The product analysis shall be carried out when agreed and specified at the time of the order. The product analysis of grad

42、es S235 and S355 shall comply with the values given in Table A.2. The permitted deviation of product analysis of SG245, SG345, SG365, SG400, SG460, SG500, and SG700 shall comply with the values given in Table B.2. 6.4.3 Carbon equivalent value For steel grade S235, a maximum carbon equivalent value

43、of 0,44 %, and for steel grade S355, a maximum carbon equivalent value of 0,52 % based on heat analysis shall apply for all thicknesses. For the carbon equivalent value formula, see ISO 630-1. 6.4.4 Deoxidation The method of deoxidation shall be as given in Table A.1 and A.2. The deoxidation methods

44、 are designated as follows: FN - Rimming steel not permitted; FF - Fully killed steel containing nitrogen binding elements in amounts sufficient to bind the available nitrogen (for example, minimum of 0,020 % total aluminium). The usual guideline is a minimum aluminium to nitrogen ratio of 2:1, when

45、 no other nitrogen binding elements are present. Such other elements shall be reported in the inspection document. 6.5 Mechanical properties 6.5.1 Tensile properties The tensile properties at room temperature shall comply with the values given in Table A.3 or Table B.3. 6.5.2 Impact properties The i

46、mpact properties of Charpy V-notch test pieces shall comply with the values specified in Table A.4 or Table B.4. The orientation of the specimens shall be longitudinal unless transverse orientation is agreed between purchaser and manufacturer (see 5.2 and ISO 630-1). The impact values for grade S355

47、WP shall be verified if agreed at the time of the order (see Table A.4). For grades of quality C and D contained in Table A.4 with nominal thickness 6 mm, the ferritic grain size shall be 6, verified by the method as described in ISO 643, if specified at the time of the order. 6.6 Surface conditions

48、 See ISO 630-1.4 ISO 2014 All rights reserved ISO 630-5:2014(E) 6.7 Internal soundness See ISO 630-1. 6.8 Dimensions and t oler anc es on dimensions, shape , and mass See ISO 630-1. 7 Inspection The type of inspection (specific or non-specific) and the type of inspection document according to ISO 10

49、474 shall be specified at the time of the order. Refer to ISO 630-1. 8 S ampling F r equency of t esting 8.1 V erification The verification of mechanical properties shall be by heat. Verification by lot shall be by agreement between the manufacturer and purchaser. 8.2 Test units 8.2.1 Annex A The test unit shall contain products of the same form, grade, and quality, delivery condition and the same thickness range as specified in Table A.3 for the yield strength and shall be by heat 40 t