MESC SPE 76∕212 February 2020 ALLOY AND STAINLESS STEEL FORGINGS(AMENDMENTS∕SUPPLEMENTS TO ASTM A182).pdf

TECHNICAL SPECIFICATION ALLOY AND STAINLESS STEEL FORGINGS (AMENDMENTS/SUPPLEMENTS TO ASTM A182) MESC SPE 76/212 February 2020 MESC SPECIFICATION DOCUMENT This document is restricted. Neither the whole nor any part of this document may be disclosed to any third party without the prior written consent of Shell Global Solutions International B.V., The Netherlands. The copyright of this document is vested in this company. All rights reserved. Neither the whole nor any part of this document may be reproduced, stored in any retrieval system or transmitted in any form or by any means (electronic, mechanical, reprographic, recording or otherwise) without the prior written consent of the copyright owner. MESC SPE 76/212 February 2020 Page 2 PREFACE MESC (Materials and Equipment Standards and Code) SPE documents reflect the views, at the time of publication, of: Shell Global Solutions International B.V. (Shell GSI) and/or Shell International Exploration and Production B.V. (SIEP) and/or other Shell Service Companies. They are based on the experience acquired during their involvement with the design, construction, operation and maintenance of processing units and facilities, and they are supplemented with the experience of Shell Operating Units. Where appropriate they are based on, or reference is made to, international, regional, national and industry standards. The objective is to set the recommended standard for good design and engineering practice applied by Shell companies operating an oil refinery, gas handling installation, chemical plant, oil and gas production facility, or any other such facility, and thereby to achieve maximum technical and economic benefit from standardization. The information set forth in these publications is provided to Shell companies for their consideration and decision to implement. This is of particular importance where MESC SPEs may not cover every requirement or diversity of condition at each locality. The system of MESC SPEs is expected to be sufficiently flexible to allow individual Operating Units to adapt the information set forth in MESC SPEs to their own environment and requirements. When Contractors or Manufacturers/Suppliers use MESC SPEs they shall be solely responsible for the quality of work and the attainment of the required design and engineering standards. In particular, for those requirements not specifically covered, the Principal will expect them to follow those practices, which will achieve the same level of integrity as reflected in the MESC SPEs. If in doubt, the Contractor or Manufacturer/Supplier shall, without detracting from his own responsibility, consult the Principal or its technical advisor. The right to use MESC SPEs is granted by Shell GSI, in most cases under Service Agreements primarily with Shell companies and other companies receiving technical advice and services from Shell GSI or another Shell Service Company. Consequently, three categories of users of MESC SPEs can be distinguished: 1) Operating Units having a Service Agreement with Shell GSI or other Shell Service Company. The use of MESC SPEs by these Operating Units is subject in all respects to the terms and conditions of the relevant Service Agreement. 2) Other parties who are authorized to use MESC SPEs subject to appropriate contractual arrangements (whether as part of a Service Agreement or otherwise). 3) Contractors/subcontractors and Manufacturers/Suppliers under a contract with users referred to under 1) or 2) which requires that tenders for projects, materials supplied or - generally - work performed on behalf of the said users comply with the relevant standards. 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Without prejudice to any specific terms in respect of confidentiality under relevant contractual arrangements, MESC SPEs shall not, without the prior written consent of Shell GSI, be disclosed by users to any company or person whomsoever and the MESC SPEs shall be used exclusively for the purpose for which they have been provided to the user. They shall be returned after use, including any copies, which shall only be made by users with the express prior written consent of Shell GSI. The copyright of MESC SPEs vests in Shell GSI. Users shall arrange for MESC SPEs to be held in safe custody and Shell GSI may at any time require information satisfactory to them in order to ascertain how users implement this requirement. All administrative queries should be directed to the MESC SPE Administrator in Shell GSI. MESC SPE 76/212 February 2020 Page 3 TABLE OF CONTENTS PART I INTRODUCTION . 4 1.1 SCOPE . 4 1.2 DISTRIBUTION, INTENDED USE AND REGULATORY CONSIDERATIONS . 4 1.3 DEFINITIONS . 4 1.4 CHANGES SINCE PREVIOUS EDITION . 5 1.5 COMMENTS ON THIS MESC SPE . 5 PART II AMENDMENTS/SUPPLEMENTS TO ASTM A182/A182M19a . 6 PART III REFERENCES . 12 MESC SPE 76/212 February 2020 Page 4 PART I INTRODUCTION 1.1 SCOPE This MESC SPE specifies requirements for alloy and stainless steel forgings. This specification shall apply in addition to the applicable MESC Buying Description, purchase order or requisition sheet. This specification only applies to alloy steel forgings to ASTM A182, F5 (5Cr-0.5Mo), F9 (9Cr-1Mo), F11 Class 2 (1.25Cr-0.5Mo) and F22 Class 3 (2.25Cr-1Mo), and stainless steel forgings to ASTM A182, Grades F304, F304H, F304L, F316, F317L,F321, F321H, F347, F44, F50-F55, F57-F61, F62 and F65-F67. This specification is written as amendments and supplements to ASTM A182/A182M19a, which are covered in Part II of this MESC SPE. The clause numbering of ASTM A182/A182M19a has been retained and any amendments are identified as Add, Modify to read or Delete. Any clauses of ASTM A182/A182M19a that are not amended or supplemented by this MESC SPE, shall apply as written. This MESC SPE is also written as amendments and supplements to IOGP SPEC S-563 2018. Requirements indicated with blue bold italics underline and red bold italics underline font are covered by IOGP SPEC S-563. 1.2 DISTRIBUTION, INTENDED USE AND REGULATORY CONSIDERATIONS Unless otherwise authorised by Shell GSI, the distribution of this MESC SPE is confined to Shell companies and, where necessary, to Contractors and Manufacturers/Suppliers nominated by them. This MESC SPE is intended for use in oil refineries, chemical plants, gas plants, exploration and production facilities and, where applicable, supply/distribution installations. If national and/or local regulations exist in which some of the requirements may be more stringent than in this MESC SPE the Contractor shall determine by careful scrutiny which of the requirements are the more stringent and which combination of requirements will be acceptable with regards to safety, environmental, economic and legal aspects. In all cases the Contractor shall inform the Principal of any deviation from the requirements of this MESC SPE which is considered to be necessary in order to comply with national and/or local regulations. The Principal may then negotiate with the Authorities concerned, the objective being to obtain agreement to follow this MESC SPE as closely as possible. 1.3 DEFINITIONS The Contractor is the party that carries out all or part of the design, engineering, procurement, construction, commissioning or management of a project, or operation or maintenance of a facility. The Principal may undertake all or part of the duties of the Contractor. The Manufacturer/Supplier is the party that manufactures or supplies equipment and services to perform the duties specified by the Contractor. The Principal is the party that initiates the project and ultimately pays for its design and construction. The Principal will generally specify the technical requirements. The Principal may also include an agent or consultant authorised to act for, and on behalf of, the Principal. The word shall indicates a requirement. The word should indicates a recommendation. MESC SPE 76/212 February 2020 Page 5 1.4 CHANGES SINCE PREVIOUS EDITION The previous edition of this MESC SPE was dated February 2019. The only change is to update revision status of the base standard, to further align with IOGP SEPC S-563 and to add an extra option to allow for sample test coupon for blind flanges. 1.5 COMMENTS ON THIS MESC SPE Comments on this MESC SPE may be sent to the MESC SPE Administrator at MESC. MESC SPE 76/212 February 2020 Page 6 PART II AMENDMENTS/SUPPLEMENTS TO ASTM A182/A182M19a 5.2 Add Manufacturer shall be qualified according to NORSOK M-650 or through the TAMAP audit process. NORSOK certification (if applicable) shall be submitted as part of documentation. 7.1 Add: Heat treatment procedures shall be subject to statistical process control to ensure that the final material properties comply with the material standard and this specification. The process control data and related periodic quality control checks shall be documented. 7.2 Add: Forgings in Grades F5, F9, F11 and F22 shall conform to either of the following two options: 1. The forging shall be supplied in the normalised and tempered condition. The tempering temperature shall be 740C8C (1365F13F). The tensile properties shall be in accordance with ASTM A182 (Class 1 where applicable). 2. The forging shall be supplied in the normalised and tempered condition. The minimum tempering temperature shall be 720C (1330F). After all processing, one sample from each heat shall undergo three simulated PWHT cycles at 730C 8C (1345F 14F) with a holding time as per ASME B31.3 Table 331.1.1 for each cycle. Tensile tests according to ASTM A182 shall be performed after each cycle. If results from all tests are conform ASTM A182, all forgings from that heat are accepted. For forgings furnished to Grades F5, F9, F11 or F22, supplementary requirement S2 shall apply. 7.3 Add: Forgings furnished to Grades F44, F62, F304, F304H, F304L, F316, F321, F321H or F347 shall be solution heat-treated. If a stabilised heat treatment is specified, forgings shall be given a stabilising heat treatment in accordance with supplementary requirement S10 within a temperature range of 870 C to 900 C (1600 F to 1650 F) for 4 hours subsequent to the solution heat treatment. This temperature range and time shall superceed that specified in supplementary requirement S10. Alternatively, the Manufacturer may submit a stabilisation heat treatment procedure for approval to the Principal, and supplementary requirement S4 (corrosion test) shall apply. Ferritic-austenitic stainless-steel forgings shall be solution annealed in accordance with Table 1, and quenched rapidly by cooling in water. The transfer time from start of withdrawal of the load from the furnace to full insertion in the quench bath shall be within 60 seconds. 7.4 Modify to read: Final heat treatment shall be performed after forging and before machining. 8.1 Add: For forgings furnished to Grade F316, the following shall apply: MESC SPE 76/212 February 2020 Page 7 The carbon content shall not exceed 0.03 %. For ferritic-austenitic stainless steels forgings (“22Cr and 25Cr”),the following shall apply: For “22Cr” duplex (ferritic-austenitic) stainless steels, the Pitting Resistance Equivalent (PREN) shall be 34 or higher, the Mo mass fraction (wMo) 2.5% or higher and the N fraction (wN) 0.14% or higher. For “25Cr” super duplex (ferritic-austenitic) stainless steels, the Pitting Resistance Equivalent (PREN) shall higher than 40 and the N fraction (wN) 0.20% or higher. The PREN shall be calculated as given in Equation (1): PREN = wCr + 3.3(wMo + 0.5wW) + 16wN (1) Where: wCr is the mass fraction of chromium in the alloy, expressed as a percentage mass fraction of the total composition; wMo is the mass fraction of molybdenum in the alloy, expressed as a percentage mass fraction of the total composition; wW is the mass fraction of tungsten in the alloy, expressed as a percentage mass fraction of the total composition; wN is the mass fraction of nitrogen in the alloy, expressed as a percentage mass fraction of the total composition. For forgings furnished to Grade F11, the following shall apply: The chemical composition shall meet the following additional chemical requirements by heat analysis: Element C P S Cu Ni X-bar Max allowed 0.15 % 0.012 % 0.007 % 0.20 % 0.30 % 15 X-bar shall be calculated with the following formula: 100As4Sn 5Sb10Pbar-X+= in which the units of P, Sb, Sn and As are in ppm. Except where steam service is designated in the MESC specification for forgings furnished to Grade F22, the following shall apply: - The carbon content shall not exceed 0.15 %. - The phosphorous content shall not exceed 0.010 %. - The sulphur content shall not exceed 0.010 %. - J-factor = (Si+Mn) x (P+Sn) x 10000 120. in which the values of P, Sn, Mn and Si are in wt%. MESC SPE 76/212 February 2020 Page 8 For forgings furnished to Grade F22 in steam service, the following shall apply: - J-factor = (Si+Mn) x (P+Sn) x 10000 180. in which the values of P, Sn, Mn and Si are in wt%. 8.5 Replace by A product analysis shall be made in accordance with ASTM A961 on one forging per lot and meet the requirements of Table 2. One lot is defined as a group of fittings or flanges of the same type, size, wall thickness, manufactured from one heat of material and heat treated in one batch. 9.1 Add: For all ferritic-austenitic stainless steels maximum hardness requirements: Acceptance criteria are 28 HRC for 22Cr duplex (ferritic/austenitic) stainless steels and 32 HRC for 25Cr Superduplex (ferritic/austenitic) stainless steels. 9.2 Add as first sentence: For all grades with the exeption of ferritic/austenitic stainless steels the following applies. 9.4 Replace by For all grades exept ferritic/austenitic stainless steels the test specimens shall be taken from mid-wall thickness at a section representing the thickest part of the forging. For ferritic/austenitic stainless steels specimens shall be taken in accordance with ISO 17781. If the forgings are made using closed die which does not allow the inclusion of prolongations, testing may be carried out on part-finished sacrificial forgings. The prolongations shall not be removed from the forgings until the heat treatment has been completed. 9.5.2 Add: Mechanical tests shall be performed on material after final heat treatment. Samples for testing shall be taken from one of the follo