BRITISH STANDARD Metal bellows expansion joints for pressure applications ICS 23.040.99 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 14917:2009 +A1:2012 BS EN 14917:2009+A1:2012 National foreword This British Standard is the UK implementation of EN 14917:2009+A1:2012 It supersedes BS EN 14917:2009, which is withdrawn BSI, as a member of CEN, is obliged to publish EN 14917:2009 as a British Standard However, attention is drawn to the fact that during the development of this European Standard, the UK committee voted against its approval as a European Standard The reason for this negative vote was that clause 6.1.2.3, and its associated table, either does not specify a factor for the relationship between the minimum tensile strength and the allowable stress in the main and general pressure bearing parts or it specifies a factor of 3:1 It has been customary in the UK (and it is consistent with ISO 15348 and EJMA together with its ANSI and ASME Codes) to use a minimum factor of safety of 4:1 The start and finish of text introduced or altered by amendment is indicated in the text by tags Tags indicating changes to CEN text carry the number of the CEN amendment For example, text altered by CEN amendment A1 is indicated by !" The UK participation in its preparation was entrusted to Technical Committee GSE/42, Gas fittings and connections including metal hose and hose assemblies A list of organizations represented on this committee can be obtained on request to its secretary This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2009 © The British Standards Institution 2012 Published by BSI Standards Limited 2012 ISBN 978 580 73260 Amendments/corrigenda issued since publication Date Comments 30 April 2012 Implementation of CEN amendment A1:2012 EUROPEAN STANDARD EN 14917:2009+A1 NORME EUROPÉENNE EUROPÄISCHE NORM March 2012 ICS 23.040.99 Supersedes EN 14917:2009 English Version Metal bellows expansion joints for pressure applications Compensateurs de dilatation soufflets métalliques pour appareils pression Kompensatoren mit metallischen Bälgen für Druckanwendungen This European Standard was approved by CEN on September 2008 and includes Amendment approved by CEN on 10 January 2012 CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC 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 translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, 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, Turkey and United Kingdom EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members Ref No EN 14917:2009+A1:2012: E BS EN 14917:2009+A1:2012 EN 14917:2009+A1:2012 (E) Contents Page Foreword 5 Introduction 6 1 Scope 7 2 Normative references 7 3 Terms and definitions 10 4 4.1 4.1.1 4.1.2 4.1.3 4.1.4 4.2 4.2.1 4.2.2 4.2.3 4.2.4 Classification 11 Classification of expansion joints 11 Axial 11 Angular 11 Lateral 11 Universal 11 Classification of the parts of expansion joints 16 !Main pressure-bearing parts (A)" " 16 Pressure parts other than main pressure-bearing parts (B) 16 Attachments to main pressure-bearing parts and to pressure parts (C) 16 Other parts (D) 16 5 5.1 5.1.1 5.1.2 5.1.3 5.1.4 5.2 5.2.1 5.2.2 5.2.3 5.2.4 5.3 Materials 18 General 18 Materials for pressure-bearing parts 18 Materials for parts attached to pressure-bearing parts 18 !Materials for non-pressure parts" " 18 Documentation 18 Pressure-bearing parts 18 Bellows 18 Other pressure-bearing parts 19 Ductility 19 Brittle fracture 19 Material documentation 20 6 Design 24 6.1 General 24 6.1.1 Symbols and general factors 24 6.1.2 Basic design criteria 31 6.1.3 Additional loadings 32 6.2 Bellows 33 6.2.1 Purpose 33 6.2.2 Conditions of applicability 33 6.2.3 U-shaped unreinforced bellows 38 6.2.3.1 General 38 6.2.4 U-shaped reinforced bellows 53 6.2.5 Toroidal bellows 61 6.2.6 Specific design fatigue curves 69 6.2.7 Axial, lateral or angular displacement of bellows 69 6.2.8 Equivalent axial displacement per corrugation 75 6.2.9 Forces and moments on pressurised expansion joints 80 6.2.10 Torsion acting on bellows (unreinforced or reinforced) 91 6.3 Hardware 91 6.3.1 General 91 6.3.2 Design parameters 92 6.3.3 Design temperature 96 6.3.4 Parts 96 6.4 Internal sleeve 98 6.4.1 Scope 98 6.4.2 Additional symbols 98 BS EN 14917:2009+A1:2012 EN 14917:2009+A1:2012 (E) 6.4.3 6.4.4 Flow velocity 98 Design rules 100 7 7.1 7.2 7.2.1 7.2.2 7.3 7.3.1 7.3.2 7.3.3 7.4 7.4.1 7.4.2 7.5 7.5.1 7.5.2 7.5.3 7.6 Manufacturing 102 General 102 Materials 102 General 102 Material traceability 102 Permanent joints 102 General 102 Process and personal 102 Repair and rework during manufacturing 103 Forming of the bellows 103 Forming processes 103 Heat treatment 104 Tolerances 104 General 104 Bellows 104 Expansion joint 105 Production tests 106 8 8.1 8.2 8.3 8.4 8.4.1 8.4.2 8.4.3 8.4.4 8.5 8.5.1 8.5.2 8.5.3 8.5.4 8.6 8.6.1 8.6.2 8.7 8.7.1 8.7.2 8.7.3 Testing, inspection and documentation 106 Abbreviations 106 General 106 !Documents" " 106 In-process inspection and testing 107 General 107 Materials 107 Permanent joints 107 Non-destructive testing of welds 109 NDT methods 114 General 114 Acceptance criteria 115 Personnel qualification and approval 115 Reports 115 Final assessment and documentation 118 General 118 Final inspection 118 Documentation 120 Final documentation package 120 Declaration/certification 121 Operating instructions 121 9 Marking and labelling 121 10 10.1 10.2 10.3 10.4 10.5 Handling and installation 123 General instructions 123 Packaging and storage 123 Installation 123 Unrestrained expansion joints 124 Restrained expansions joints 124 Annex A (informative) Categories of expansion joints 125 Annex B (normative) Specification for materials 1.4828, 1.4876, 2.4360 and 2.4858 136 Annex C (informative) Incorporation of expansion joints into pressure vessels and piping 141 Annex D (informative) Calculation methods for systems of pipes containing expansion joints 160 Annex E (informative) Overview of the design of expansion bellows 177 Annex F (informative) Procedure for setting-up a design fatigue curve 182 Annex G (informative) Polynomial approximations for coefficients Cp, Cf, Cd 191 BS EN 14917:2009+A1:2012 EN 14917:2009+A1:2012 (E) Annex H (informative) Required design data and information 194 Annex I (informative) Expansion joints risk analyses 195 Annex J (informative) Material properties and material groups 197 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC 203 Bibliography 205 BS EN 14917:2009+A1:2012 EN 14917:2009+A1:2012 (E) Foreword This document (EN 14917:2009+A1:2012) has been prepared by Technical Committee CEN/TC 342, "Metal hoses, hose assemblies, bellows and expansion joints", the secretariat of which is held by !SNV" 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 September 2012, and conflicting national standards shall be withdrawn at the latest by September 2012 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 has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of the EU Directive 97/23/EC For relationship with EU Directive 97/23/EC, see informative Annex ZA, which is an integral part of this document This document includes Amendment 1, approved by CEN on 2012-01-08 This document supersedes EN 14917:2009 The start and finish of text introduced or altered by amendment is indicated in the text by tags ! " 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, Croatia, 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, Turkey and United Kingdom BS EN 14917:2009+A1:2012 EN 14917:2009+A1:2012 (E) Introduction Metal bellows expansion joints are used as components in piping or as parts of pressure vessels If an expansion joint is designed and manufactured according to this European Standard, the risk analysis is already undertaken, see Annex I BS EN 14917:2009+A1:2012 EN 14917:2009+A1:2012 (E) Scope This European Standard specifies the requirements for design, manufacture and installation of metal bellows expansion joints for pressure applications, i.e maximum allowable pressure greater than 0,5 bar 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 document (including any amendments) applies EN 287-1, Qualification test of welders — Fusion welding — Part 1: Steels EN 473, Non destructive testing — Qualification and certification of NDT personnel — General principles EN 571-1, Non destructive testing — Penetrant testing — Part 1: General principles EN 764-4, Pressure equipment — Part 4: Establishment of technical delivery conditions for metallic materials EN 764-5:2002, Pressure equipment — Part 5: Compliance and inspection documentation of materials EN 970, Non-destructive examination of fusion welds — Visual examination EN 1092-1, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN designated — Part 1: Steel flanges EN 1289:1998, Non-destructive examination of welds — Penetrant testing of welds — Acceptance levels EN 1290, Non-destructive examination of welds — Magnetic particle examination of welds EN 1291:1998, Non-destructive Acceptance levels examination of welds — Magnetic particle testing of welds — EN 1418, Welding personnel — Approval testing of welding operators for fusion welding and resistance weld setters for fully mechanized and automatic welding of metallic materials EN 1435:1997, Non-destructive examination of welds — Radiographic examination of welded joints EN 1593, Non-destructive testing — Leak testing — Bubble emission techniques EN 1712:1997, Non-destructive examination of welds — Ultrasonic examination of welded joints — Acceptance levels EN 1713, Non-destructive examination of welds — Ultrasonic examination — Characterization of indications in welds EN 1714:1997, Non-destructive examination of welds — Ultrasonic examination of welded joints EN 1779:1999, Non-destructive testing — Leak testing — Criteria for method and technique selection EN 10002-1, Metallic materials — Tensile testing — Part 1: Method of test at ambient temperature EN 10002-5, Metallic materials — Tensile testing — Part 5: Method of testing at elevated temperature EN 10028-1, Flat products made of steels for pressure purposes — Part 1: General requirements !EN 10028-2:2009", Flat products made of steels for pressure purposes — Part 2: Non-alloy and alloy steels with specified elevated temperature properties BS EN 14917:2009+A1:2012 EN 14917:2009+A1:2012 (E) !EN 10028-3:2009", Flat products made of steels for pressure purposes — Part 3: Weldable fine grain steels, normalized EN 10028-4, Flat products made of steels for pressure purposes — Part 4: Nickel alloy steels with specified low temperature properties EN 10028-7:2007, Flat products made of steels for pressure purposes — Part 7: Stainless steels EN 10045-1, Metallic materials — Charpy impact test — Part 1: Test method EN 10204:2004, Metallic products — Types of inspection documents EN 10216-1, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 1: Non-alloy steel tubes with specified room temperature properties EN 10216-2, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties EN 10216-3, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 3: Alloy fine grain steel tubes EN 10216-4, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 4: Non-alloy and alloy steel tubes with specified low temperature properties EN 10217-1, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 1: Non-alloy steel tubes with specified room temperature properties EN 10217-2, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 2: Electric welded non-alloy and alloy steel tubes with specified elevated temperature properties EN 10217-3, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 3: Alloy fine grain steel tubes EN 10217-4, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 4: Electric welded non-alloy steel tubes with specified low temperature properties EN 10217-5, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 5: Submerged arc welded non-alloy and alloy steel tubes with specified elevated temperature properties EN 10217-6, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 6: Submerged arc welded non-alloy steel tubes with specified low temperature properties EN 10222-2, Steel forgings for pressure purposes — Part 2: Ferritic and martensitic steels with specified elevated temperature properties EN 10222-3, Steel forgings for pressure purposes — Part 3: Nickel steels with specified low temperature properties EN 10222-4, Steel forgings for pressure purposes — Part 4: Weldable fine grain steels with high proof strength EN 10253-2, Butt-welding pipe fittings — Part 2: Non alloy and ferritic alloy steels with specific inspection requirements EN 10269, Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties EN 10272, Stainless steel bars for pressure purposes EN 10273, Hot rolled weldable steel bars for pressure purposes with specified elevated temperature properties BS EN 14917:2009+A1:2012 EN 14917:2009+A1:2012 (E) Annex H (informative) Required design data and information H.1 Required design conditions The required design data listed in Table H.1 should be given by the piping or pressure vessel manufacturer to the expansion joint manufacturer Table H.1 — Required design data Number Object Subclause reference Type of expansion joint 4.1 End connections (material, size, standards) — Nominal size DN or relevant diameters Maximum allowable pressure PS 3.8 Minimum and maximum allowable temperature TS 3.9 Displacements 6.2, etc 6.2.7 6.2.3.6.3.1 6.2.3.6.3.2 6.2.4.5.3 6.2.5.5.3 Number of cycles Nspe Material of the bellows (compatible with medium and working conditions) 5.2.1 Additional design conditions 6.1.3 10 Nature of fluid: gas or liquid 6.4 11 Flow velocity 6.4 12 Category according to Directive 97/23/EC 3.14 H.2 Additional information Additional information that may affect the design should be given by piping or pressure vessel manufacturer 194 BS EN 14917:2009+A1:2012 EN 14917:2009+A1:2012 (E) Annex I (informative) Expansion joints risk analyses The possible risks of an expansion joint and how they have been dealt in this European Standard are described in the Table I.1 Table I.1 — Risk analysis list N° Risk Adopted precaution Clause reference Material Corrosion 5.2.1.2 Suitability of chosen material for forming and welding 5.2.1.1, 5.2.2, 5.2.3, 5.2.4 Internal erosion/wearing due to the medium velocity 5 Deformation and/or rupture with loss of fluid and structural integrity caused by PS and TS Rupture due to fatigue caused by cycling movements Damages caused by overcoming the design limits PS, TS, movements and cycles Leakage from seam welds of bellows and from welds of pressure containment parts Damages caused during handling and transport Design Manufacturing 7.3 7.4 6.1.2, !deleted text" 6.4 Control Other 8.3 8.4.2 8.7.1 8.3 8.7.1 8.3 8.4 8.6.2.2 8.7.1 Eliminated 8.7.3 10.2 State of the a risk 8.4.4 8.6.2.2 8.7.1 Not eliminated b Eliminated 8.7.3 10 Partially elimib nated 195 BS EN 14917:2009+A1:2012 EN 14917:2009+A1:2012 (E) Table I.1 (continued) N° Risk Adopted precaution Clause reference Material Design Manufacturing Control Other Damages caused by incorrect installation and use 8.7.3 10 10 Explosion or escape of the medium during disassembling if not depressurised or previously discharge 8.7.3 10 a State of the risk when the expansion joint is placed on the market b Not under the responsibility of the expansion joint manufacturer 196 State of the risk a Not eliminated b BS EN 14917:2009+A1:2012 EN 14917:2009+A1:2012 (E) Annex J (informative) Material properties and material groups !Table J.1 — Material numbers, names and documents European material number International designation Steel name Document Alloy 1.4828 309 X15CrNiSi20-12 Annex B, Position 1.4876 800 / 800 H X10NiCrAlTi32-21 Annex B, Position 2.4360 400 NiCu30Fe Annex B, Position 2.4610 C-4 NiMo16Cr16Ti EAM-0526-28 2.4816 600 NiCr15Fe EAM-0526-43-1/2 2.4819 C-276 NiMo16Cr15W EAM-0526-18 2.4856 625 NiCr22Mo9Nb EAM-0526-40 2.4858 825 NiCr21Mo Annex B, Position " !Tables J.2 to J.6 give mechanical properties of several materials for design reasons The mechanical properties at elevated temperatures in Table J.2 are taken from the relevant EAM and are partly interpolated, extrapolated or completed on the basis of reliable documents published by material manufacturers Tables J.3 and J.5 give mechanical properties at elevated temperatures for the materials specified in Annex B The verification of mechanical properties that are not content of the relevant EAM is only made by agreement between the purchaser and the manufacturer at the time of enquiry and order." 197 BS EN 14917:2009+A1:2012 EN 14917:2009+A1:2012 (E) !Table J.2 — Temperature-depending properties Property Material 2.4610 NiMo16Cr16Ti solutionannealed, e ≤ mm MPa 20 100 200 300 400 450 500 Rp0,2 305 285 255 245 225 — — Rp1,0 340 315 285 270 260 — — 700 to 900 — — — — — — 2,11 2,07 2,02 1,95 1,88 — — Rp0,2 180 170 160 150 150 145 145 c Rm 500 to 700 480 460 445 440 435 430 2,14 2,09 2,05 2,00 1,94 1,90 c 1,87 Rp0,2 310 280 240 220 195 — — Rp1,0 330 305 275 245 230 — — Rm 730 to 1000 — — — — — — 2,05 2,00 1,95 1,91 1,85 — — Rp0,2 400 350 320 300 280 270 260 Rm 830 to 1000 740 700 685 670 660 650 2,09 2,02 c 1,95 1,9 c 1,85 1,81 c (1,78) Rm E/10 2.4816 NiCr15Fe solutionannealed, e ≤ 50 mm 2.4819 NiMo16Cr15 W solutionannealed, e ≤ mm E/10 E/10 2.4856 NiCr22Mo9N b solutionannealed, e ≤ mm E/10 NOTE Temperature in °C a 5 5 Linear interpolation is allowed for intermediate values a minimum values for Rp0,2 and Rp1,0 b EAM see normative references […] see Bibliography c Interpolated / extrapolated values (italic) 198 Elongation after rupture at 20 °C Density A in % ρ in g/cm 40 (8,7) EAM-052628, [21] 35 (8,5) EAM-052643-1, [10] 30 (8,9) EAM-052618, [22] 35 (8,4) EAM-052640, [12] Source b of values BS EN 14917:2009+A1:2012 EN 14917:2009+A1:2012 (E) Table J.3 — Creep rupture stress (100 000 h) European Material number 1.4828 1.4876 2.4816 2.4856 Steel name X15CrNiSi20-12 X10NiCrAlTi32-21 NiCr15Fe NiCr22Mo9Nb Alloy 309 800 H 800 H* a 600 625 Source b SEW 470 [3] WB 412 [4] WB 434 [7] [10] [11] Typical creep rupture stress c Rm,100 000 in MPa Temperature in °C NOTE 550 90 171 171 140 390 560 85 157 157 131 370 580 75 134 134 113 330 600 65 114 114 97 290 620 55 96 98 83 254 640 45 80 83 70 220 660 36 67 72 60 190 680 26 56 62 50 160 700 16 47 53 42 135 720 14 39 45 35 110 740 12,5 33 39 29 91 760 11 28 33 24 73 780 23 28 22 58 800 7,5 19 24 17 45 820 6,5 15 20,5 14 35 840 5,5 11 17,5 12 27 860 14,5 10 21 880 12,5 19 900 10,5 18 Linear interpolation is allowed for intermediate values a variation with higher creep rupture stresses, see Table J.4 b [3], [4], [7], [10], [11], see Bibliography c interpolated values (italic) 199 BS EN 14917:2009+A1:2012 EN 14917:2009+A1:2012 (E) Table J.4 — Special requirements for 1.4876 (H*) / X10NiCrAlTi32-21 Solution-annealed variation of 1.4876 with higher creep rupture stresses by increased grain size [7] (not recommended for use as bellows material) Chemical composition by weight in % C Si Mn P S Cr Ni a Co Cu Al Ti AL+Ti minimum 0,06 − − − − 19,0 30,0 − − 0,15 0,15 0,85 maximum 0,1 1,0 1,5 0,015 0,01 23,0 34,0 1,0 0,75 0,60 0,60 1,2 Component Grain size Grain size index: or coarser (mean diameter ≥ 90 µm) a including max % Co Table J.5 — Young’s modulus of elasticity at high temperatures Material number 1.4828 1.4876 2.4816 2.4856 Steel name X15CrNiSi20-12 X10NiCrAlTi32-21 NiCr15Fe NiCr22Mo9Nb Temperature in °C E in MPa 600 155 000 161 000 180 000 170 000 700 145 000 150 000 172 000 162 000 800 140 000 141 000 163 000 153 000 900 135 000 - 153 000 142 000 Table J.6 — Low temperatures yield strength Approximate temperature depending increasing factor KLT a Material number Temperature in °C Source / remarks 20 - 100 - 196 - 270 1.4404 1,0 1,4 1,7 1,9 1.4301 1,0 1,3 1,6 — 1.4541 1,0 1,0 1,0 1,0 1.4306, 1.4401, 1.4435 1,0 1,3 1,6 1,8 based on 1.4301 1.4550, 1.4571, 1.4539 1,0 1,0 1,0 1,0 based on 1.4541 1,0 1,0 1,0 1,0 no low temperature values available 2.4360 1,0 1,3 1,6 — [15], [9], [11] 2.4816, 2.4856 1,0 1,1 1,2 1,3 (KLT = Rp 0,2 t / Rp 0,2, 20) 1.4828, 1.4876, 2.4610, 2.4819, 2.4858 NOTE EN 10028-7 / Annex F Linear interpolation is allowed for intermediate values a KLT = Rp1,0 t / Rp1,0, 20 or KLT = Rp0,2 t / Rp 0,2, 20, if Rp 1,0 not available " 200 BS EN 14917:2009+A1:2012 EN 14917:2009+A1:2012 (E) Table J.7 — Material groups according to CEN ISO/TR 15608 [30] (extract) Group Sub-group Type of steel Steels with a specified minimum yield strength R eH ≤ 460 N/mm a and with analysis in %: C ≤ 0,25; Si ≤ 0,60; Mn ≤ 1,8; Mo ≤ 0,70 b; S ≤ 0,045; P ≤ 0,045; Cu ≤ 0,40 b; Ni ≤ 0,5 b; Cr ≤ 0,3 (0,4 for castings) b; Nb ≤ 0,06; V ≤ 0,1 b and Ti ≤ 0,05 ≤ 275 N/mm 1.1 Steels with a specified minimum specified yield strength R 1.2 Steels with a specified minimum yield strength 275 N/mm < R 1.3 Normalized fine grain steels with a specified minimum yield strength ReH > 360 N/mm 1.4 Steels with improved atmospheric corrosion resistance whose analysis may exceed the requirements for the single elements as indicated under eH eH ≤ 360 N/mm 2 Thermomechanically treated fine grain steels and cast steels with a specified minimum yield strength ReH > 360 N/mm 2.1 Thermomechanically treated fine grain steels and cast steels with a specified minimum 2 yield strength 360 N/mm < ReH ≤ 460 N/mm 2.2 Thermomechanically treated fine grain steels and cast steels with a specified minimum yield strength ReH > 460 N/mm Quenched and tempered steels and precipitation hardened fine grain steels except stainless steels with a specified minimum yield strength ReH > 360 N/mm 3.1 Quenched and tempered fine grain steels with a specified minimum yield strength 360 N/mm < ReH ≤ 690 N/mm 3.2 Quenched and tempered fine grain steels with a specified minimum yield strength ReH > 690 N/mm 3.3 Precipitation hardened fine grain steels except stainless steels Low vanadium alloyed Cr-Mo-(Ni) steels with Mo ≤ 0,7 % and V ≤ 0,1 % 4.1 Steels with Cr ≤ 0,3 % and Ni ≤ 0,7 % 4.2 Steels with Cr ≤ 0,7 % and Ni ≤ 1,5 % Cr-Mo steels free of vanadium with C ≤ 0,35 % c 5.1 Steels with 0,75 % ≤ Cr ≤ 1,5 % and Mo ≤ 0,7 % 5.2 Steels with 1,5 % < Cr ≤ 3,5 % and 0,7 % < Mo ≤ 1,2 % 5.3 Steels with 3,5 % < Cr ≤ 7,0 % and 0,4 % < Mo ≤ 0,7 % 5.4 Steels with 7,0 % < Cr ≤ 10,0 % and 0,7 % < Mo ≤ 1,2 % High vanadium alloyed Cr-Mo-(Ni) steels 6.1 Steels with 0,3 % ≤ Cr ≤ 0,75 %, Mo ≤ 0,7 % and V ≤ 0,35 % 6.2 Steels with 0,75 % < Cr ≤ 3,5 %, 0,7 % < Mo ≤ 1,2 % and V ≤ 0,35 % 6.3 Steels with 3,5 % < Cr ≤ 7,0 %, Mo ≤ 0,7 % and 0,45 % ≤ V ≤ 0,55 % 6.4 Steels with 7,0 % < Cr ≤ 12,5 %, 0,7 % < Mo ≤ 1,2 % and V ≤ 0,35 % Ferritic, martensitic or precipitation hardened stainless steels with C ≤ 0,35 % and 10,5 % ≤ Cr ≤ 30 % 7.1 Ferritic stainless steels 7.2 Martensitic stainless steels 7.3 Precipitation hardened stainless steels 201 BS EN 14917:2009+A1:2012 EN 14917:2009+A1:2012 (E) Table J.7 (continued) Group Sub-group Type of steel Austenitic steels, Ni ǂ 31 % 8.1 Austenitic stainless steels with Cr ≤ 19 % 8.2 Austenitic stainless steels with Cr > 19 % 8.3 Manganese austenitic stainless steels with % < Mn ≤ 12 % Nickel alloyed steels with Ni ≤ 10,0 % 9.1 Nickel alloyed steels with Ni ≤ 3,0 % 9.2 Nickel alloyed steels with 3,0 % < Ni ≤ 8,0 % 9.3 Nickel alloyed steels with 8,0 % < Ni ≤ 10,0 % Austenitic-ferritic stainless steels (duplex) 10 10.1 Austenitic-ferritic stainless steels with Cr ≤ 24 % 10.2 Austenitic-ferritic stainless steels with Cr > 24 % d Steels covered by group except 0,25 % < C ≤ 0,5 % 11 NOTE 11.1 Steels as indicated under 11 with 0,25 % ≤ C ≤ 0,35 % 11.2 Steels as indicated under 11 with 0,35 % ≤ C ≤ 0,5 % Based on the actual product analysis, group steels may be considered as group steels a In accordance with the specification of the steel product standards, ReH may be replaced by Rp0,2 or Rp0,5 b A higher value is accepted provided that Cr + Mo + Ni + Cu + V ≤ 0,75 % c "Free of vanadium" means not deliberately added to the material d A higher value is accepted provided that Cr + Mo + Ni + Cu + V ≤ % 202 BS EN 14917:2009+A1:2012 EN 14917:2009+A1:2012 (E) Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC This European Standard has been prepared under a mandate given to CEN by the European Commission to provide a means of conforming to Essential Requirements of the New Approach Directive 97/23/EC Once this standard is cited in the Official Journal of the !European Union" under that Directive and has been implemented as a national standard in at least one Member State, compliance with the clauses of this standard given in Table ZA.1 confers, within the limits of the scope of this standard, a presumption of conformity with the corresponding Essential Requirements of that Directive and associated EFTA regulations Table ZA.1 — Correspondence between this European Standard and Directive 97/23/EC Clause(s)/subclause(s) of this EN Qualifying remarks/Notes Essential Requirements of Directive 97/23/EC/Annex I Appropriate materials properties 4.1 (a) 5.1.1 Material suitability for processing procedure 4.1 (d) 5.2.1.2 Sufficient chemical resistance 4.1 (b) 5.2.1.2 Corrosion or other chemical aspects 2.6 5.2.4 Prevention of brittle fracture 4.1 (a), 7.5 5.3 Technical documentation 4.3 6, all clauses Safe design 2.1 Calculation method 2.2.3 6.1, 6.3 Design for adequate strength 2.2 6.1.2, 6.3 Proper design using relevant factors 2.1 6.1.2.3, 6.3 Allowable stress 7.1 6.1.2, 6.2.3, 6.2.4, 6.2.5 Pressure and temperature resistance and their combinations 2.2.3b 6.4.1 Wear 2.7 6.2.3, 6.2.4, 6.2.5 Fatigue 2.2.1 6.2.3, 6.2.4, 6.2.5 Stability aspects 2.2.3c 6.3.4.7, 8.4.4 Joint coefficients 7.2 7, all clauses Appropriate manufacturing techniques and procedures 3.1 7.3 Permanent joining 3.1.2 7.3.2.3 Qualification of welding personnel 3.1.2 7.3.2.2 Suitability of welding process 3.1.2 7.4 Forming process for bellows 3.1 203 BS EN 14917:2009+A1:2012 EN 14917:2009+A1:2012 (E) Table ZA (continued) Clause(s)/subclause(s) of this EN Essential Requirements of Directive 97/23/EC/Annex I Qualifying remarks/Notes 7.4.2 Heat treatment 3.1.4 7.2.2 Traceability of materials 3.1.5 8, all clauses Testing, inspection and documentation 3.1 — 3.3 8.3 Documentation 3.1 8.4 In-process inspection and testing 3.2.1 !deleted text" 8.5.3 Non-destructive test methods and personel 3.1.3 8.6 Final assessment and documentation 3.2 8.6.2.2 Proof test 3.2.2 8.7.3 Operating instructions 2.2.3, 3.4 9, all clauses Marking and labelling 3.3 10 Handling and installation 3.4 10.4, 10.5 Risk of overstressing 6(a) WARNING: Other requirements and other EU Directives may be applicable to the product(s) falling within the scope of this standard 204 BS EN 14917:2009+A1:2012 EN 14917:2009+A1:2012 (E) Bibliography [1] Directive 97/23/EC of the European Parliament and of the Council of 29 May 1997 on the approximation of the laws of the Member States concerning pressure equipment [2] AD 2000-W 10:2003/10 (DE) [3] SEW 470, Edition: 1976/02 (DE) [4] VdTÜV-WB 412: 2001/06 (DE) [5] VdTÜV-WB 263: 1986/03 (DE) [6] VdTÜV-WB 432/1: 1999/06 (DE) [7] VdTÜV-WB 434:1999/03 (DE) [8] CERN / LHC Project Note 012 / 1995-11-14 (CH) Fatigue life prediction for finite ratchetting of bellows at cryogenic temperatures B Skoczen, T Kurtyka, J.C Brunet, A Poncet, A Jacquemod [9] Publication No SMC-027: 2004 (Alloy 600) Special Metals Wiggin Ltd., Hereford, England (UK) [10] Material Data Sheet No 4007:2002 (Alloy 600) ThyssenKrupp VDM GmbH, 58791 Werdohl (DE) [11] Publication No SMC-063: 2004 (Alloy 625) Special Metals Wiggin Ltd., Hereford, England (UK) [12] Material Data Sheet No 4018:2002 (Alloy 625) ThyssenKrupp VDM GmbH, 58791 Werdohl (DE) [13] High Temperature Austenitic Stainless Steels:2004 Outokumpu Stainless AB, SE-774 22 Avesta (SE) [14] 1.4828 Ferrotherm:2007 Deutsche Edelstahlwerke GMBH, 58452 Witten (DE) [15] Publication No SMC-046: 2004 (Alloy 800) Special Metals Wiggin Ltd., Hereford, England (UK) [16] Material Data Sheet No 4029:2002 (Alloy 800) ThyssenKrupp VDM GmbH, 58791 Werdohl (DE) [17] Publication No SMC-053: 2005 (Alloy 400) Special Metals Wiggin Ltd., Hereford, England (UK) [18] Material Data Sheet No 4010:2002 (Alloy 400) ThyssenKrupp VDM GmbH, 58791 Werdohl (DE) [19] Publication No SMC-030:2004 (Alloy 825) Special Metals Wiggin Ltd., Hereford, England (UK) [20] Material Data Sheet 4001:2002 (Alloy 825) ThyssenKrupp VDM GmbH, 58791 Werdohl (DE) [21] Material Data Sheet No 4024:2003 (Alloy C-4) ThyssenKrupp VDM GmbH, 58791 Werdohl (DE) [22] Material Data Sheet No 4015:2002 (Alloy C-276) ThyssenKrupp VDM GmbH, 58791 Werdohl (DE) [23] Publication No SMC-053: 2005 (Alloy 400) Special Metals Wiggin Ltd., Hereford, England (UK) [24] EN 764-1:2004, Pressure equipment — Part 1: Terminology — Pressure, temperature, volume, nominal size [25] EN 764-2:2002, Pressure equipment — Part 2: Quantities, symbols and units [26] EN 764-3:2002, Pressure equipment — Part 3: Definition of parties involved 205 BS EN 14917:2009+A1:2012 EN 14917:2009+A1:2012 (E) [27] EN 764-7:2002, Pressure equipment — Part 7: Safety systems for unfired pressure equipment [28] EN 10095:1999, Heat resisting steels and nickel alloys [29] ISO 4200:1991, Plain end steel tubes, welded and seamless — General tables of dimensions and masses per unit length [30] ISO 6208:1992, Nickel and nickel alloy plate, sheet and strip [31] CEN ISO/TR 15608, Welding — Guidelines for a metallic material grouping (ISO/TR 15608:2005) ! 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