1、Designation: A225/A225M 17Standard Specification forPressure Vessel Plates, Alloy Steel, Manganese-Vanadium-Nickel1This standard is issued under the fixed designation A225/A225M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the
2、year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification2covers manganese-vanadium-nickelalloy steel plates intended primarily for welded layered p
3、res-sure vessels.1.2 Plates under this specification are available in twogrades having different strength levels as follows:Grade Tensile Strength, ksi MPaC 105135 725930D3 in. 75 mm and under 80105 550725Over 3 in. 75 mm 75100 5156901.3 The maximum thickness of plates is limited only by thecapacity
4、 of the chemical composition to meet the specifiedmechanical property requirements.1.4 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard. Within the text, theSI units are shown in brackets. The values stated in eachsystem are not exact equivalents; the
5、refore, each system mustbe used independently of the other. Combining values from thetwo systems may result in nonconformance with the specifi-cation.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decisio
6、n on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:3A20/A20M Specification for General Requirements for SteelPlates for Pressure Vessels
7、A435/A435M Specification for Straight-Beam UltrasonicExamination of Steel PlatesA577/A577M Specification for Ultrasonic Angle-Beam Ex-amination of Steel PlatesA578/A578M Specification for Straight-Beam UltrasonicExamination of Rolled Steel Plates for Special Applica-tions3. General Requirements and
8、Ordering Information3.1 Material supplied to this material specification shallconform to Specification A20/A20M. These requirements out-line the testing and retesting methods and procedures, permit-ted variations in dimensions, and mass, quality and repair ofdefects, marking, loading, and ordering i
9、nformation.3.2 In addition to the basic requirements of thisspecification, certain supplementary requirements are availablewhen additional control, testing, or examination is required tomeet end use requirements. The purchaser is referred to thelisted supplementary requirements in this specification
10、 and tothe detailed requirements in Specification A20/A20M.3.3 Coils are excluded from qualification to this specifica-tion until they are processed into finished plates. Platesproduced from coil means plates that have been cut toindividual lengths from coil. The processor directly controls, oris re
11、sponsible for, the operations involved in the processing ofcoils into finished plates. Such operations include decoiling,leveling, cutting to length, testing, inspection, conditioning,heat treatment (if applicable), packaging, marking, loading forshipment, and certification.NOTE 1For plates produced
12、 from coil and furnished without heattreatment or with stress relieving only, three test results are reported foreach qualifying coil. Additional requirements regarding plates from coilare described in Specification A20/A20M.3.4 If the requirements of this specification are in conflictwith the requi
13、rements of Specification A20/A20M, the require-ments of this specification shall prevail.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.11 on Steel Plates for Boilers and Pressure Ves
14、sels.Current edition approved Nov. 1, 2017. Published November 2017. Originallyapproved in 1939. Last previous edition approved in 2012 as A225/A225M 12.DOI: 10.1520/A0225_A0225M-17.2For ASME Boiler and Pressure Vessel Code applications, see related Specifi-cation SA-225/SA-225M in Section II of tha
15、t Code.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of th
16、is standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopme
17、nt of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.14. Materials and Manufacture4.1 Steelmaking PracticeThe steel shall be killed andshall conform to the fine austenitic grain size requirement ofSpecification A
18、20/A20M.5. Heat Treatment5.1 Grade D plates of all thicknesses and Grade C plates ofthicknesses over 2 in. 50 mm shall be normalized.5.2 Grade C plates 2 in. 50 mm and under in thickness areusually supplied in the as-rolled condition. The plates may beordered normalized or stress-relieved, or both.6
19、. Chemical Composition6.1 The steel shall conform to the chemical requirementsgiven in Table 1, unless otherwise modified in accordance withSupplementary Requirement S17, Vacuum Carbon-DeoxidizedSteel, in Specification A20/A20M.7. Mechanical Properties7.1 Tension TestThe plates, as represented by th
20、e tensiontest specimens, shall conform to the requirements given inTable 2.7.2 For plates with a nominal thickness of34 in. 20 mmand under, the 112-in. 40-mm wide rectangular specimen maybe used and the elongation determined in a 2-in. 50-mm gagelength that includes the fracture and that shows the g
21、reatestelongation.8. Keywords8.1 alloy steel plates; manganese-vanadium-nickel steelplate; plate for pressure vessels; pressure containing partsTABLE 1 Chemical RequirementsElementsComposition, %Grade C Grade DCarbon, maxA0.25 0.20Manganese, max:Heat analysis 1.60 1.70Product analysis 1.72 1.84Phosp
22、horus, maxA0.025 0.025Sulfur, maxA0.025 0.025Silicon:Heat analysis 0.150.40 0.100.50Product analysis 0.130.45 0.080.56Vanadium:Heat analysis 0.130.18 0.100.18Product analysis 0.110.20 0.080.20Nickel:Heat analysis 0.400.70 0.400.70Product analysis 0.370.73 0.370.73AApplies to both heat and product an
23、alyses.TABLE 2 Tensile RequirementsGrade C Grade Dksi MPa ksi MPaTensile strength:All thicknesses 105135 7259303 in. 75 mm and under 80105 550725Over 3 in. 75 mm 75100 515690Yield strength, min:AAll thicknesses 70 4853 in. 75 mm and under 60 415Over 3 in. 75 mm 55 380Elongation in 8 in. 200 mm, min,
24、 %B.Elongation in 2 in. 50 mm, min, %B20 19Elongation in 5D, min, %B17ADetermined by either the 0.2 % offset method or the 0.5 % extension-under-load method.BSee Specification A20/A20M for elongation adjustment.A225/A225M 172SUPPLEMENTARY REQUIREMENTSSupplementary requirements shall not apply unless
25、 specified in the purchase order.A list of standardized supplementary requirements for use at the option of the purchaser is includedin Specification A20/A20M. Those that are considered suitable for use with this specification are listedbelow by title.S1. Vacuum Treatment,S2. Product Analysis,S3. Si
26、mulated Post-Weld Heat Treatment of MechanicalTest Coupons,S4.1 Additional Tension Test,S5. Charpy V-Notch Impact Test,S6. Drop Weight Test (for Material 0.625 in. 16 mm andover in Thickness),S7. High-Temperature Tension Test,S8. Ultrasonic Examination in accordance with Specifica-tion A435/A435M,S9
27、. Magnetic Particle Examination,S11. Ultrasonic Examination in accordance with Specifica-tion A577/A577M,S12. Ultrasonic Examination in accordance with Specifica-tion A578/A578M, andS17. Vacuum Carbon-Deoxidized Steel.SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to
28、 this standard since the last issue(A225/A225M 12 that may impact the use of this standard. (Approved Nov. 1, 2017.)(1) Revised 1.3 to remove thickness guidelines.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this s
29、tandard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be re
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31、ible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West
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