1、BS EN 10120:2008ICS 77.140.30; 77.140.50NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDSteel sheet andstrip for welded gascylindersThis British Standardwas published underthe authority of theStandards Policy andStrategy Committee on 30September 2008 BSI 2008ISB
2、N 978 0 580 59269 0Amendments/corrigenda issued since publicationDate CommentsBS EN 10120:2008National forewordThis British Standard is the UK implementation of EN 10120:2008. Itsupersedes BS EN 10120:1997 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee
3、 ISE/73/2, Steel plates and bars for pressure purposes.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance
4、 with a British Standard cannot confer immunityfrom legal obligations.BS EN 10120:2008EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 10120September 2008ICS 77.140.50 Supersedes EN 10120:1996 English VersionSteel sheet and strip for welded gas cylindersTles et bandes pour bouteilles gaz soudes en
5、acier Stahlblech und -band fr geschweite GasflaschenThis European Standard was approved by CEN on 1 August 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alte
6、ration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by trans
7、lationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, G
8、reece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement
9、 Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 10120:2008: EBS EN 10120:2008EN 10120:2008 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4
10、4 Classification and designation.5 5 Information to be supplied by the purchaser .5 5.1 Mandatory information5 5.2 Options .5 5.3 Example of ordering 6 6 Manufacturing process .6 6.1 Steelmaking process.6 6.2 Delivery condition6 7 Requirements.6 7.1 Chemical composition 6 7.2 Mechanical properties.7
11、 7.3 Weldability8 7.4 Tolerances 8 7.5 Surface condition.8 8 Inspection .8 8.1 Types of inspection and inspection documents 8 8.2 Tests to be carried out 9 8.3 Retests, sorting and reprocessing.9 9 Sampling.9 9.1 Frequency of testing .9 9.2 Sampling and test piece preparation.9 10 Test methods10 10.
12、1 Chemical analysis10 10.2 Tensile test .10 10.3 Other testing.10 11 Marking .10 BS EN 10120:2008EN 10120:2008 (E) 3 Foreword This document (EN 10120:2008) has been prepared by Technical Committee ECISS/TC 22 “Steels for pressure purposes - Qualities”, the secretariat of which is held by DIN. This E
13、uropean Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 2009, and conflicting national standards shall be withdrawn at the latest by March 2009. This document supersedes EN 10120:1996. NOTE The clauses ma
14、rked with a point () contain information relating to agreements which are to be made at the time of enquiry and order. The clauses marked by two points () contain information relating to agreements that may be made at the time of enquiry and order. According to the CEN/CENELEC Internal Regulations,
15、the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,
16、Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 10120:2008EN 10120:2008 (E) 4 1 Scope This European Standard specifies requirements for hot-rolled sheet and strip up to 5 mm thickness of steels listed in Table 1 and intended for the man
17、ufacture of welded gas cylinders. The general technical delivery conditions in EN 10021 also apply to products supplied in accordance with this European Standard. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, o
18、nly the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 10002-1:2001, Metallic materials Tensile testing Part 1: Method of test at ambient temperature EN 10020:2000, Definition and classification of grades of steel E
19、N 10021, General technical delivery conditions for steel products EN 10027-1, Designation systems for steels Part 1: Steel names EN 10027-2, Designation systems for steels Part 2: Numerical system EN 10051, Continuously hot rolled uncoated plate, sheet and strip of non-alloy and alloy steels Toleran
20、ces on dimensions and shape EN 10052:1993, Vocabulary of heat treatment terms for ferrous products EN 10079:2007, Definition of steel products EN 10168, Steel products Inspection documents List of information and description EN 10204, Metallic products Types of inspection documents CEN/TR 10261, Iro
21、n and steel Review of available methods of chemical analysis EN ISO 377, Steel and steel products Location and preparation of samples and test pieces for mechanical testing (ISO 377:1997) EN ISO 2566-1, Steel Conversion of elongation values Part 1: Carbon and low alloy steels (ISO 2566-1:1984) EN IS
22、O 14284, Steel and iron Sampling and preparation of samples for the determination of chemical composition (ISO 14284:1996) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 10020:2000, EN 10052:1993 (but see 3.1), EN 10079:2007 and the following apply.
23、BS EN 10120:2008EN 10120:2008 (E) 5 3.1 normalizing rolling deviating from EN 10052:1993 rolling process in which the final deformation process is carried out in a certain temperature range leading to a material condition equivalent to that obtained after normalizing so that the specified values of
24、the mechanical properties are retained even after normalizing NOTE The symbol for this delivery condition is N. 4 Classification and designation 4.1 Classification The steels specified in this European Standard are non-alloy quality steels in accordance with EN 10020. 4.2 Designation The steel grade
25、s are designated with steel names in accordance with EN 10027-1. The corresponding steel numbers have been allocated in accordance with EN 10027-2. 5 Information to be supplied by the purchaser 5.1 Mandatory information The following information shall be supplied by the purchaser at the time of enqu
26、iry and order: a) quantity required; b) type of flat products (sheet or strip); c) nominal dimensions of the product (length1), width, thickness); d) number of this European Standard; e) steel name or number (see Table 1 or 3); f) delivery condition (see 6.2 and 7.5); g) inspection document to be de
27、livered (see 8.1.1). 5.2 Options A number of options are specified in this European Standard and listed below. If the purchaser does not indicate his wish to implement any of these options the products shall be supplied in accordance with the basic specification (see 5.1). 1) Information on the melt
28、ing and deoxidation process (see 6.1.1 and 6.1.2) 2) Product analysis (see 7.1.2 and Table 4) 3) Sampling conditions for the product analysis (see 9.2.2) 1) For sheet only BS EN 10120:2008EN 10120:2008 (E) 6 4) Special marking conditions (see Clause 11) 5.3 Example of ordering 10 t sheets with nomin
29、al dimensions of thickness = 4,0 mm, width = 600 mm, length = 1 200 mm, made of the steel grade P265NB (1.0423) as specified in EN 10120, delivered normalized, descaled and oiled, inspection certificate 3.1 in accordance with EN 10204: 10 t sheet 600x1200x4,0 EN 10120 P265NB normalized and oiled EN
30、10204-3.1 or 10 t sheet 600x1200x4,0 EN 10120 1.0423 normalized and oiled EN 10204-3.1 6 Manufacturing process 6.1 Steelmaking process 6.1.1 The melting and deoxidation process shall be at the discretion of the manufacturer with the limitations to 6.1.2 and 6.1.3 and Table 1, unless otherwise agreed
31、 at the time of enquiry and order. 6.1.2 The steel shall be manufactured using the electric arc process or an oxygen process. Other melting processes may be used by agreement at the time of enquiry and order. On request, the purchaser shall be informed of the process used. 6.1.3 The used type of deo
32、xidation shall ensure that the steel has an acceptable degree of resistance to ageing (see Table 1, footnote b). 6.2 Delivery condition The delivery condition shall be specified at the time of enquiry and order. Usual delivery conditions are: a) hot rolled and normalized (N)2); b) hot rolled (AR). N
33、OTE The delivery condition “hot rolled and normalized2)“ is generally used for gas cylinders which are only stress relieved after welding. The “hot rolled“ delivery condition is only intended for gas cylinders which are normalized after welding. 7 Requirements 7.1 Chemical composition 7.1.1 Cast ana
34、lysis The cast analysis reported by the steel producer shall apply and comply with the requirements of Table 1. 7.1.2 Product analysis The product analysis shall not deviate from the limiting values for the cast analysis as specified in Table 1 by more than the values given in Table 2. 2) This inclu
35、des the normalizing rolled condition. BS EN 10120:2008EN 10120:2008 (E) 7 Table 1 Chemical composition of the cast analysis, in %a Steel grade Steel name Steel number C max. Si max. Mn min. P max. S max. Altotalb min. Nc max. Nb max. Ti max. P245NB 1.0111 0,16 0,25 0,30 0,025 0,015 0,020 0,009 0,050
36、 0,03 P265NB 1.0423 0,19 0,25 0,40 0,025 0,015 0,020 0,009 0,050 0,03 P310NB 1.0437 0,20 0,50 0,70 0,025 0,015 0,020 0,009 0,050 0,03 P355NB 1.0557 0,20 0,50 0,70 0,025 0,015 0,020 0,009 0,050 0,03 a Elements not listed in this table may not be intentionally added to the steel without the agreement
37、of the purchaser except for finishing the cast. All appropriate measures shall be taken to prevent the addition from scrap or other materials used in steelmaking of these elements which may adversely affect the mechanical properties and usability.bThe aluminium content may partly be replaced by 0,05
38、0 % Nb and/or 0,03 % Ti (see 6.1.3). In such cases the content of these elements is to be reported in the inspection document. cIf the ratio of NtotalAl 2,2 or if Nb and/or Ti additions are applied, the nitrogen content may be 0,012 %. Table 2 Permissible product analysis tolerances on the limiting
39、values given in Table 1 for the cast analysis Element Limiting value of the cast analysis Permissible deviation of the product analysis C 0,20 + 0,02 Si 0,50 + 0,05 Mn 0,30 0,05 P 0,025 + 0,005 S 0,015 + 0,003 Altotal 0,020 0,005 N 0,009 + 0,002 Nb 0,050 + 0,010 Ti 0, 03 + 0,01 7.2 Mechanical proper
40、ties The mechanical properties shall comply with the values in Table 3 which are applicable to samples in the normalized or normalizing rolled condition. BS EN 10120:2008EN 10120:2008 (E) 8 Table 3 Mechanical properties and guidance for heat treatmenta Steel grade Elongation after fracture A min. fo
41、r product thickness t in mm Steel name Steel number Upper yield strength ReH min. MPa Tensile strength Rm MPat 3 (LO = 80 mm) % 3 t 5 (LO= 5,65 oS ) % Normalizing temperature (for guidance)b C P245NB 1.0111 245 360 to 450 26 34 900 to 940 P265NB 1.0423 265 410 to 500 24 32 890 to 930 P310NB 1.0437 3
42、10 460 to 550 21 28 890 to 930 P355NB 1.0557 355 510 to 620 19 24 880 to 920 a See also 7.2 and 9.2.3.bThe normalizing temperatures given here are only mandatory if reference test pieces are to be tested. 7.3 Weldability The steels in accordance with this European Standard are weldable using the usu
43、al fusion welding processes. 7.4 Tolerances Tolerances on dimensions and mass shall be in accordance with EN 10051. 7.5 Surface condition Depending on the specified surface condition, the sheet or strip shall be supplied either in the rolled condition or in the chemically or mechanically descaled an
44、d oiled condition. External imperfections which do not impair the intended application shall not be the cause of rejection. Only the material involved can be rejected on the basis of external defects. 8 Inspection 8.1 Types of inspection and inspection documents 8.1.1 The compliance with the require
45、ments of the order shall be checked for products in accordance with this European Standard by specific inspection. The purchaser shall state the required type of inspection document (3.1 or 3.2) in accordance with EN 10204. If an inspection document 3.2 is specified, the purchaser shall notify the m
46、anufacturer of the name and address of the organization or person who is to carry out the inspection and produce the inspection document. It shall be agreed which party shall issue the certificate. 8.1.2 The inspection document shall include, in accordance with EN 10168, the following codes and info
47、rmation: BS EN 10120:2008EN 10120:2008 (E) 9 A Commercial transactions and parties involved; B Description of products to which the inspection certificate applies; C03 Test temperature; C10-C13 Tensile test at room temperature; C70 Steelmaking process, if applicable; C71-C92 Cast analysis and, if ap
48、plicable, product analysis; D01 Marking, dimensional and visual inspection; Z Validation. 8.2 Tests to be carried out The mandatory and optional tests to be carried out, the size of the test units, and the number of samples and test pieces to be taken are specified in 10.1 and Table 4. Table 4 Summa
49、ry of tests and extent of testing Type of inspection and test Test frequencya Refer to Cast analysis 1 per cast 7.1.1 Tensile test 1 per sample 9.1, 9.2 and 10.2 Mandatory tests Dimensional and visual inspection Each product 10.3.1 and 10.3.2Optional tests Product analysis 1 per cast 9.1, 9.2 and 10.1 aFor sampling and size of test units, see 9.1 and 9.2.1. 8.3 Retests, sorting and reprocessing For retests, sorting and reprocessing the requirements of EN 10021 shall ap
