《BS EN 10028-3-2009 Flat products made of steels for pressure purposes Part 3 Weldable fine grain steels, normalized.pdf》由会员分享，可在线阅读，更多相关《BS EN 10028-3-2009 Flat products made of steels for pressure purposes Part 3 Weldable fine grain steels, normalized.pdf（20页珍藏版）》请在三一文库上搜索。
1、 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? EN 10028-3:2009 (E) 2 Contents Page Foreword 3 1Scope 4 2Normative references 4 3Terms and definitions . 4 4Dimensions and tolerances on dimensions . 4 5Calculation of mass . 4 6Classification and designation . 4 6.1C
2、lassification 4 6.2Designation 5 7Information to be supplied by the purchaser . 5 7.1Mandatory information 5 7.2Options . 5 7.3Example for ordering . 5 8Requirements . 6 8.1Steelmaking process . 6 8.2Delivery condition 6 8.3Chemical composition 6 8.4Mechanical properties . 9 8.5Surface condition. 9
3、8.6Internal soundness 9 8.7Resistance to hydrogen induced cracking . 10 9Inspection . 10 9.1Types of inspection and inspection documents 10 9.2Tests to be carried out 10 9.3Retests 10 10Sampling . 10 11Test methods 10 12Marking . 10 Annex A (normative) Evaluation of resistance to hydrogen induced cr
4、acking 14 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC . 15 Bibliography 16 ? EN 10028-3:2009 (E) 3 Foreword This document (EN 10028-3:2009) has been prepared by Technical Committee ECISS/TC 22 Steels for pressure purposes
5、 - 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of an identical text or by endorsement, at the latest by December 2009, and conflicting national standards shall be withdrawn at the latest by Decembe
6、r 2009. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 10028-3:2003. This European Standard consists of t
7、he following parts, under the general title Flat products made of steels for pressure purposes: Part 1: General requirements Part 2: Non-alloy and alloy steels with specified elevated temperature properties Part 3: Weldable fine grain steels, normalized Part 4: Nickel alloy steels with specified low
8、 temperature properties Part 5: Weldable fine grain steels, thermomechanically rolled Part 6: Weldable fine grain steels, quenched and tempered Part 7: Stainless steels NOTE The clauses marked by two points () contain information relating to agreements that may be made at the time of enquiry and ord
9、er. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive 97/23/EC. For relationship with EU Directive 97/23/EC, see informative Annex ZA, which is an integral part of this
10、document. According to the CEN/CENELEC Internal Regulations, 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, Irelan
11、d, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. ? EN 10028-3:2009 (E) 4 1 Scope This European Standard specifies requirements for flat products for pressure equipment made of weldab
12、le fine grain steels as specified in Table 1. NOTE 1 Fine grain steels are understood as steels with a ferritic grain size of 6 or finer when tested in accordance with EN ISO 643. The requirements and definitions of EN 10028-1:2007 + A1:2009 also apply. NOTE 2 Once this European Standard is publishe
13、d in the EU Official Journal (OJEU) under Directive 97/23/EC, presumption of conformity to the Essential Safety Requirements (ESRs) of Directive 97/23/EC is limited to technical data of materials in this European Standard (Part 1 and this Part 3 of the series) and does not presume adequacy of the ma
14、terial to a specific item of equipment. Consequently, the assessment of the technical data stated in this material standard against the design requirements of this specific item of equipment to verify that the ESRs of Directive 97/23/EC are satisfied, needs to be done. 2 Normative references The fol
15、lowing 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. EN 10028-1:2007 + A1:2009, Flat products made of steels
16、for pressure purposes Part 1: General requirements EN 10204:2004, Metallic products Types of inspection documents EN 10229:1998, Evaluation of resistance of steel products to hydrogen induced cracking (HIC) 3 Terms and definitions For the purposes of this document, the terms and definitions given in
17、 EN 10028-1:2007 + A1:2009 apply. 4 Dimensions and tolerances on dimensions See EN 10028-1:2007 + A1:2009. 5 Calculation of mass See EN 10028-1:2007 + A1:2009. 6 Classification and designation 6.1 Classification 6.1.1 The steel grades covered by this document are given in four qualities: a) room tem
18、perature quality (P . N), b) elevated temperature quality (P.NH), c) low temperature quality (P.NL1) and d) special low temperature quality (P.NL2). ? EN 10028-3:2009 (E) 5 6.1.2 The grades P275NH, P275NL1, P355N, P355NH and P355NL1 are non-alloy quality steels, the grades P275NL2 and P355NL2 are no
19、n-alloy special steels and the grades P460NH, P460NL1 and P460NL2 are alloy special steels. 6.2 Designation See EN 10028-1:2007 + A1:2009. 7 Information to be supplied by the purchaser 7.1 Mandatory information See EN 10028-1:2007 + A1:2009. 7.2 Options A number of options are specified in this docu
20、ment and listed below. Additionally the relevant options of EN 10028-1:2007 + A1:2009 apply. If the purchaser does not indicate a wish to implement any of these options at the time of enquiry and order, the products shall be supplied in accordance with the basic specification (see also EN 10028-1:20
21、07 + A1:2009). 1) tests in the simulated normalized condition (see 8.2.2); 2) delivery of products in the untreated condition (see 8.2.3); 3) maximum carbon equivalent value (see 8.3.3); 4) tensile properties for increased product thicknesses (see Table 4, footnote c); 5) modified values for ReH and
22、 Rm for grades P460NH and P460NL1 (see Table 4, footnote d) 6) application of the Rp0,2 values of Table 5 for the corresponding P.NL1 and P NL2 grade (see 8.4.2); 7) Rp0,2 values at elevated temperatures for increased product thicknesses (see Table 5, footnote b); 8) specification of a minimum impac
23、t energy of 40 J (see NOTE to 8.4.1 and Table 6); 9) HIC test in accordance with EN 10229 (see 8.7); 10) mid thickness test pieces for the impact test (see Clause 10); 11) verification of impact energy for longitudinal test pieces (see clause 11); 12) use of test solution B for the HIC test with agr
24、eed acceptance criteria (see Annex A). 7.3 Example for ordering 10 plates with nominal dimensions, thickness = 50 mm, width = 2000 mm, length = 10 000 mm, made of a steel grade with the name P275NL2 and the number 1.1104 as specified in EN 10028-3, to be delivered with inspection certificate 3.1 as
25、specified in EN 10204: 10 plates 50 x 2000 x 10000 EN 10028-3 P275NL2 - Inspection certificate 3.1. or 10 plates 50 x 2000 x 10000 EN 10028-3 1.1104 Inspection certificate 3.1. ? EN 10028-3:2009 (E) 10 8.7 Resistance to hydrogen induced cracking Carbon and low alloy steels may be susceptible to crac
26、king when exposed to corrosive H2S containing environments, usually referred to as sour service. A test to evaluate the resistance to hydrogen induced cracking in accordance with Annex A may be agreed at the time of enquiry and order. 9 Inspection 9.1 Types of inspection and inspection documents See
27、 EN EN 10028-1:2007 + A1:2009. 9.2 Tests to be carried out See EN 10028-1:2007 + A1:2009 and 8.7. 9.3 Retests See EN 10028-1:2007 + A1:2009. 10 Sampling See EN 10028-1:2007 + A1:2009. For the impact test, deviating from EN 10028-1:2007 + A1:2009, Table 3, footnote f, the preparation of test pieces t
28、aken from the mid thickness may be agreed at the time of enquiry and order. In this case, test temperatures and minimum impact energy values shall also be agreed. 11 Test methods See EN 10028-1:2007 + A1:2009 and EN 10229. For the impact test, verification of impact energy for longitudinal test piec
29、es may be agreed at the time of enquiry and order in accordance with 10.2.2.3 and 11.4 in EN 10028-1:2007 + A1:2009. 12 Marking See EN 10028-1:2007 + A1:2009. EN 10028-3:2009 (E) 7 Table 1 Chemical composition (cast analysis) a Steel grade % by mass Steel name Steel number C max. Si max. Mn P max. S
30、 max. Altotal min. N max. Cr max. Cu max. Mo max. Nb max. Ni max. Ti max. V max. Nb + Ti + V max. P275NH 1.0487 0,16 0,40 0,80 b to 1,50 0,025 0,010 0,020 c,d 0,012 0,30e 0,30 e 0,08 e 0,05 0,50 0,03 0,05 0,05 P275NL1 1.0488 0,008 P275NL2 1.1104 0,020 0,005 P355N 1.0562 0,18 0,50 1,10 to 1,70 0,025
31、0,010 0,020 c,d 0,012 0,30e 0,30 e 0,08 e 0,05 0,50 0,03 0,10 0,12 P355NH 1.0565 P355NL1 1.0566 0,008 P355NL2 1.1106 0,020 0,005 P460NH 1.8935 0,20 0,60 1,10 to 1,70 0,025 0,010 0,020 c,d 0,025 0,30 0,70 f 0,10 0,05 0,80 0,03 0,20 0,22 P460NL1 1.8915 0,008 P460NL2 1.8918 0,020 0,005 a Elements not l
32、isted in this table shall not be intentionally added to the steel without the agreement 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 m
33、echanical properties and usability. b For product thicknesses 6 mm, a minimum Mn content of 0,60 % is permitted. c The Altotal content may fall short this minimum if niobium, titanium or vanadium are additionally used for nitrogen binding. d If only aluminium is used for nitrogen binding, a ratio N
34、Al 2 shall apply. e The sum of the percentages by mass of the three elements chromium, copper and molybdenum shall not exceed 0,45 %. f If the percentage by mass of copper exceeds 0,30 %, the percentage by mass of nickel shall be at least half the percentage by mass of copper. ? EN 10028-3:2009 (E)
35、6 8 Requirements 8.1 Steelmaking process See EN 10028-1:2007 + A1:2009. 8.2 Delivery condition 8.2.1 Unless otherwise agreed at the time of enquiry and order (see 8.2.3), the products covered by this document shall be supplied in the normalized condition. For steels with a minimum yield strength 460
36、 MPa, delayed cooling or additional tempering may be necessary for small product thicknesses and in special cases. If such a treatment is performed, this shall be noted in the inspection document. 8.2.2 Normalizing may, at the discretion of the manufacturer, be replaced with normalizing rolling for
37、the steel grades P275NH, P275NL1, P275NL2, P355N, P355NH, P355NL1 and P355NL2 (see 3.1 in EN 10028- 1:2007 + A1:2009). In this case, additional tests on simulated normalized samples with an agreed frequency of testing may be agreed at the time of enquiry and order to verify that the specified proper
38、ties are complied with. 8.2.3 If so agreed at the time of enquiry and order, products covered by this document may also be delivered in the untreated condition. In these cases, testing shall be carried out in the simulated normalized condition (but see 8.2.1). NOTE Testing in a simulated heat treate
39、d condition does not discharge the processor from the obligation of providing proof of the specified properties in the finished product. 8.2.4 Information on welding is given in EN 1011-1 and EN 1011-2. NOTE Excessive post weld heat treatment (PWHT) conditions can decrease the mechanical properties.
40、 When in stress relieving the intended time temperature parameter P = Ts (20 + lg t) x 10-3, where Ts is the stress relieving temperature in K and t is the holding time in hours, exceeds the critical value Pcrit. of 17,3 for all steel grades except P460NH, P460NL1 and P460NL2 16,7 in the case of ste
41、el grade P460NH and 16,3 in the case of steel grades P460NL1 and P460NL2, the purchaser should in his enquiry and order inform the manufacturer accordingly and, where appropriate, tests on simulated heat treated samples may be agreed to check whether after such a treatment the properties specified i
42、n this European Standard can still be regarded as valid. 8.3 Chemical composition 8.3.1 The requirements of Table 1 shall apply for the chemical composition according to the cast analysis. 8.3.2 The product analysis shall not deviate from the specified values for the cast analysis as specified in Ta
43、ble 1 by more than the values given in Table 2. 8.3.3 A maximum value for the carbon equivalent in accordance with Table 3 may be agreed upon at the time of enquiry and order. ? EN 10028-3:2009 (E) 9 Table 3 Maximum carbon equivalent value (CEV) based on cast analysis (if agreed at the time of enquiry and order)a Steel grade CEV b max. for product thicknesses t in mm Steel name Steel number 60 60 t 100 100 t 250 P275NH 1.0487 0,40 0,40 0,42 P275NL1 1.0488 P275NL2 1.1104 P355