1、Designation: A225/A225M 12A225/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 r
2、evision, the 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 specification2 covers manganese-vanadium-nickel alloy steel plates intended primarily for w
3、elded layered pressurevessels.1.2 Plates under this specification are available in two grades 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
4、by the capacity of the chemical composition to meet the specifiedmechanical property requirements; however, current mill practice normally limits Grade C to 0.58 in. 15 mm maximum andGrade D to 6 in. 150 mm maximum. requirements.1.4 The values stated in either inch-pound units or SI units are to be
5、regarded separately as standard. Within the text, the SI unitsare shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be usedindependently of the other. Combining values from the two systems may result in nonconformance with the specification.1.
6、5 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trad
7、e (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:3A20/A20M Specification for General Requirements for Steel Plates for Pressure VesselsA435/A435M Specification for Straight-Beam Ultrasonic Examination of Steel PlatesA577/A577M Specification for Ultrasonic Angle-Beam Examination of Steel P
8、latesA578/A578M Specification for Straight-Beam Ultrasonic Examination of Rolled Steel Plates for Special Applications3. General Requirements and Ordering Information3.1 Material supplied to this material specification shall conform to Specification A20/A20M. These requirements outline thetesting an
9、d retesting methods and procedures, permitted variations in dimensions, and mass, quality and repair of defects, marking,loading, and ordering information.3.2 In addition to the basic requirements of this specification, certain supplementary requirements are available when additionalcontrol, testing
10、, or examination is required to meet end use requirements. The purchaser is referred to the listed supplementaryrequirements in this specification and to the detailed requirements in Specification A20/A20M.3.3 Coils are excluded from qualification to this specification until they are processed into
11、finished plates. Plates produced fromcoil means plates that have been cut to individual lengths from coil. The processor directly controls, or is responsible for, the1 This specification is under the jurisdiction ofASTM Committee A01 on Steel, Stainless Steel and RelatedAlloys and is the direct resp
12、onsibility of Subcommittee A01.11on Steel Plates for Boilers and Pressure Vessels.Current edition approved May 1, 2012Nov. 1, 2017. Published June 2012November 2017. Originally approved in 1939. Last previous edition approved in 20072012 asA225/A225M 03 (2007).A225/A225M 12. DOI: 10.1520/A0225_A0225
13、M-12.10.1520/A0225_A0225M-17.2 For ASME Boiler and Pressure Vessel Code applications, see related Specification SA-225/SA-225M in Section II of that Code.3 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM S
14、tandardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possi
15、ble to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopy
16、right ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1operations involved in the processing of coils into finished plates. Such operations include decoiling, leveling, cutting to length,testing, inspection, conditioning, heat treatment (if appl
17、icable), packaging, marking, loading for shipment, and certification.NOTE 1For plates produced from coil and furnished without heat treatment or with stress relieving only, three test results are reported for eachqualifying coil. Additional requirements regarding plates from coil are described in Sp
18、ecification A20/A20M.3.4 If the requirements of this specification are in conflict with the requirements of Specification A20/A20M, the requirementsof this specification shall prevail.4. Materials and Manufacture4.1 Steelmaking PracticeThe steel shall be killed and shall conform to the fine austenit
19、ic grain size requirement ofSpecification A20/A20M.5. Heat Treatment5.1 Grade D plates of all thicknesses and Grade C plates of thicknesses over 2 in. 50 mm shall be normalized.5.2 Grade C plates 2 in. 50 mm and under in thickness are usually supplied in the as-rolled condition. The plates may beord
20、ered normalized or stress-relieved, or both.6. Chemical Composition6.1 The steel shall conform to the chemical requirements given in Table 1, unless otherwise modified in accordance withSupplementary Requirement S17, Vacuum Carbon-Deoxidized Steel, in Specification A20/A20M.7. Mechanical Properties7
21、.1 Tension TestThe plates, as represented by the tension test specimens, shall conform to the requirements given in Table 2.7.2 For plates with a nominal thickness of 34 in. 20 mm and under, the 112-in. 40-mm wide rectangular specimen may beused and the elongation determined in a 2-in. 50-mm gage le
22、ngth that includes the fracture and that shows the greatest elongation.8. Keywords8.1 alloy steel plates; manganese-vanadium-nickel steel plate; plate for pressure vessels; pressure containing partsTABLE 1 Chemical RequirementsElements Composition, %Grade C Grade DCarbon, maxA 0.25 0.20Manganese, ma
23、x:Heat analysis 1.60 1.70Product analysis 1.72 1.84Phosphorus, maxA 0.025 0.025Sulfur, maxA 0.025 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 anal
24、ysis 0.370.73 0.370.73A Applies to both heat and product analyses.A225/A225M 172SUPPLEMENTARY REQUIREMENTSSupplementary requirements shall not apply unless specified in the purchase order.Alist of standardized supplementary requirements for use at the option of the purchaser is includedin Specificat
25、ion A20/A20M. Those that are considered suitable for use with this specification are listedbelow by title.S1. Vacuum Treatment,S2. Product Analysis,S3. Simulated Post-Weld Heat Treatment of Mechanical Test Coupons,S4.1 Additional Tension Test,S5. Charpy V-Notch Impact Test,S6. Drop Weight Test (for
26、Material 0.625 in. 16 mm and over in Thickness),S7. High-Temperature Tension Test,S8. Ultrasonic Examination in accordance with Specification A435/A435M,S9. Magnetic Particle Examination,S11. Ultrasonic Examination in accordance with Specification A577/A577M,S12. Ultrasonic Examination in accordance
27、 with Specification A578/A578M, andS17. Vacuum Carbon-Deoxidized Steel.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 und
28、er 60 415Over 3 in. 75 mm 55 380Elongation in 8 in. 200 mm, min, %B .Elongation in 2 in. 50 mm, min, %B 20 19Elongation in 5D, min, %B 17A Determined by either the 0.2 % offset method or the 0.5 % extension-under-load method.B See Specification A20/A20M for elongation adjustment.A225/A225M 173SUMMAR
29、Y OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue(A225/A225M 03 (2007)A225/A225M 12) that may impact the use of this standard. (Approved May 1,2012Nov. 1, 2017.)(1) Table 1 wasRevised 1.3 revised.to remove thickness guidelines.(2) Section
30、 3 was editorially revised.(3) Section 8 was added.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent righ
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34、e obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 174
