1、November 2008DEUTSCHE NORM English price group 8No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 77.140.50!$Rp“1477757w
2、ww.din.deDDIN EN 10120Steel sheet and strip for welded gas cylindersEnglish version of DIN EN 10120:2008-11Stahlblech und -band fr geschweite GasflaschenEnglische Fassung DIN EN 10120:2008-11SupersedesDIN EN 10120:1997-01www.beuth.deDocument comprises 12 pagesDIN EN 10120:2008-11 2 National foreword
3、 This standard has been prepared by Technical Committee ECISS/TC 22 “Steels for pressure purposes Qualities” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Eisen und Stahl (Iron and Steel Standards Committee), Subcommittee 04/02 Sthle fr
4、den Druckbehlterbau. This standard specifies requirements for hot-rolled steel sheet and strip up to 5 mm in thickness intended for the manufacure of welded gas cylinders. Amendments This standard differs from DIN EN 10120:1997-01 as follows: a) In clause 3 “Terms and definitions”, the term “normali
5、zing rolling” has been included with a definition deviating from EN 10052:1993. b) The example of ordering (5.3) has been given in more detail. c) Requirements for the inspection documents have been revised. d) A new subclause “Tests to be carried out” (8.2) has been added. e) Subclause 10.1 “Chemic
6、al analysis” has been revised. f) A new subclause “Other testing” relating to the checking of the dimensions and the surface condition of the products (10.3) has been added. g) A bibliography has been included. h) The standard has been editorially revised. Previous editions DIN EN 10120: 1997-01 EUR
7、OPEAN 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 acier Stahlblech und -band fr geschweite GasflaschenThis European Standard was approved b
8、y 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 alteration. Up-to-date lists and bibliographical references concerning such nationalstandards
9、 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 translationunder the responsibility of a CEN member into its own language and notified to the
10、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, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherland
11、s, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any f
12、orm and by any means reservedworldwide for CEN national Members.Ref. No. EN 10120:2008: EEN 10120:2008 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Classification and designation.5 5 Information to be supplied by the purchaser .5 5.1 Mandatory informa
13、tion5 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 7.3 Weldability8 7.4 Tolerances 8 7.5 Surface condition.8 8 Inspection .8 8.1 Types of inspection and in
14、spection 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 10.1 Chemical analysis10 10.2 Tensile test .10 10.3 Other testing.10 11 Marking .10 DIN EN 10120:2008-11 EN
15、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 European Standard shall be given the status of a national standard, either by publication of an ident
16、ical 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 marked with a point () contain information relating to agreements which are to be made at the time of
17、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, the national standards organizations of the following countries are bound to implement this European
18、 Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kin
19、gdom. DIN EN 10120:2008-11 EN 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 manufacture of welded gas cylinders. The general technical delivery conditions in EN 10021 also ap
20、ply 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, only the edition cited applies. For undated references, the latest edition of the referenced doc
21、ument (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 EN 10021, General technical delivery conditions for steel products EN 10027-1, Designation syste
22、ms 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 Tolerances on dimensions and shape EN 10052:1993, Vocabulary of heat treatment terms for ferrous produ
23、cts 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, Iron and steel Review of available methods of chemical analysis EN ISO 377, Steel and steel produc
24、ts 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 ISO 14284, Steel and iron Sampling and preparation of samples for the determination of chemical c
25、omposition (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. DIN EN 10120:2008-11 EN 10120:2008 (E) 5 3.1 normalizing rolling deviating from EN 10052:1993 r
26、olling 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 the mechanical properties are retained even after normalizing NOTE The symbol for this del
27、ivery 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 grades are designated with steel names in accordance with EN 10027-1. The corresponding steel n
28、umbers 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 enquiry and order: a) quantity required; b) type of flat products (sheet or strip); c) nominal
29、 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 delivered (see 8.1.1). 5.2 Options A number of options are specified in this European Standa
30、rd 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 melting and deoxidation process (see 6.1.1 and 6.1.2) 2) Product analysis (see 7.1.2 and Table
31、 4) 3) Sampling conditions for the product analysis (see 9.2.2) 1) For sheet only DIN EN 10120:2008-11 EN 10120:2008 (E) 6 4) Special marking conditions (see Clause 11) 5.3 Example of ordering 10 t sheets with nominal dimensions of thickness = 4,0 mm, width = 600 mm, length = 1 200 mm, made of the s
32、teel 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 10204-3.1 or 10 t sheet 600x1200x4,0 EN 10120 1.0423 normalized and oiled EN 10204-3.
33、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 at the time of enquiry and order. 6.1.2 The steel shall be manufactured using the el
34、ectric 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 deoxidation shall ensure that the steel has an acceptable degree of resistance to ageing
35、 (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). NOTE The delivery condition “hot rolled and normalized2)“ is generally used for gas cy
36、linders 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 analysis The cast analysis reported by the steel producer shall apply and comply with th
37、e 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 includes the normalizing rolled condition. DIN EN 10120:2008-11 EN 10120:2008 (E) 7 Table
38、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 0,03 P265NB 1.0423 0,19 0,25 0,40 0,025 0,015 0,020 0,009 0,050 0,03 P310NB 1.0
39、437 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 of the purchaser except for finishing the cast. All appropriate measures shall b
40、e 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 0,050 % Nb and/or 0,03 % Ti (see 6.1.3). In such cases the content of these elements
41、 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 values given in Table 1 for the cast analysis Element Limiting value of the cast
42、 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 properties The mechanical properties shall comply with the values in Table 3 which are
43、 applicable to samples in the normalized or normalizing rolled condition. DIN EN 10120:2008-11 EN 10120:2008 (E) 8 Table 3 Mechanical properties and guidance for heat treatmenta Steel grade Elongation after fracture A min. for product thickness t in mm Steel name Steel number Upper yield strength Re
44、H 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 310 460 to 550 21 28 890 to 930 P355NB 1.0557 355 510 to 620 19 24 880 to 92
45、0 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 usual fusion welding processes. 7.4 Tolerances Tolerances on dimensions and ma
46、ss 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 and oiled condition. External imperfections which do not impair the intended
47、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 requirements of the order shall be checked for products in accordance with this Eu
48、ropean 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 manufacturer of the name and address of the organization or person who is to
49、 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 information: DIN EN 10120:2008-11 EN 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 Steelm
