1、Designation:A225/A225M03(Reapproved2007) Designation: A225/A225M 12Standard 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 a
2、doption or, in the case of revision, 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 specification2covers manganese-vanadium-nickel alloy steel plat
3、es intended primarily for welded 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
4、 of plates is limited only 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.1.4 The values stated in either inch-pound units or SI uni
5、ts are to be 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 spe
6、cification.1This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.11on Steel Plates for Boilers and Pressure Vessels.Current edition approved Nov. 1, 2007. Published March 2008. Originally
7、approved in 1939. Last previous edition approved in 2003 as A225/A225M03. DOI:10.1520/A0225_A0225M-03R07.Current edition approved May 1, 2012. Published June 2012. Originally approved in 1939. Last previous edition approved in 2007 as A225/A225M 03 (2007). DOI:10.1520/A0225_A0225M-12.2For ASME Boile
8、r and Pressure Vessel Code applications, see related Specification SA-225/SA-225M in Section II of that Code.1This 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
9、technically possible 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
10、this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.2. Referenced Documents2.1 ASTM Standards:3A20/A20M Specification for General Requirements for Steel Plates for Pressure VesselsA435/A435M Specification for Straight-Beam U
11、ltrasonic Examination of Steel PlatesA577/A577M Specification for Ultrasonic Angle-Beam Examination of Steel PlatesA578/A578M Specification for Straight-Beam Ultrasonic Examination of Rolled Steel Plates for Special Applications3. General Requirements and Ordering Information3.1Plates3.1 Material su
12、pplied to this productmaterial specification shall conform to Specification A20/A20M, which outlinesthe testing and retesting methods and procedures, permissible variations in dimensions and mass, quality and repair of defects,marking, loading, etc.3.2Specification . These requirements outline the t
13、esting and retesting methods and procedures, permitted variations indimensions, 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
14、, testing, 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 SpecificationA20/A20Malso establishes the rules for orderinginformation that should be complied with when pu
15、rchasing plates to this specification.3.3In addition to the basic requirements of this specification, certain supplementary requirements are available where additionalcontrol, testing, or examination is required to meet end use requirements.3.4The purchaser is referred to the listed supplementary re
16、quirements in this specification and to the detailed requirements inSpecification A20/A20M.3.5Coils3.3 Coils are excluded from qualification to this specification until they are processed into finished plates. Platesproduced from coil means plates that have been cut to individual lengths from coil.
17、The processor directly controls, or isresponsible for, the operations involved in the processing of coils into finished plates. Such operations include decoiling, leveling,cutting to length, testing, inspection, conditioning, heat treatment (if applicable), packaging, marking, loading for shipment,
18、andcertification.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 Specification A20/A20M.3.6If3.4 If the requirements of
19、 this specification are in conflict with the requirements of Specification A20/A20M, therequirements of this specification shall prevail.4. Materials and Manufacture4.1 Steelmaking PracticeThe steel shall be killed and shall conform to the fine austenitic grain size requirement ofSpecification A20/A
20、20M.5. Heat Treatment5.1 Grade D plates of all thicknesses and Grade C plates of thicknesses over 2 in. 50 mm shall be normalized.3For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume informa
21、tion, refer to the standards Document Summary page on the ASTM website.TABLE 1 Chemical RequirementsElementsComposition, %Grade C Grade DCarbon, maxA0.25 0.20Manganese, max:Heat analysis 1.60 1.70Product analysis 1.72 1.84Phosphorus, maxA0.035 0.035Phosphorus, maxA0.025 0.025Sulfur, maxA0.035 0.035S
22、ulfur, 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 analyses.A225/A225M 1225.
23、2 Grade C plates 2 in. 50 mm and under in thickness are usually supplied in the as-rolled condition. The plates may beordered 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 accordan
24、ce withSupplementary Requirement S17, Vacuum Carbon-Deoxidized Steel, in Specification A20/A20M.7. Mechanical Properties7.1 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 of34 in. 20 mm
25、and under, the 112-in. 40-mm wide rectangular specimen may beused and the elongation determined in a 2-in. 50-mm gage length that includes the fracture and that shows the greatest elongation.-in. 40-mm wide rectangular specimen may be used and the elongation determined in a 2-in. 50-mm gage length t
26、hat includesthe fracture and that shows the greatest elongation.8. Keywords8.1 alloy steel plates; manganese-vanadium-nickel steel plate; plate for pressure vessels; pressure containing partsSUPPLEMENTARY REQUIREMENTSSupplementary requirements shall not apply unless specified in the purchase order.A
27、 list of standardized supplementary requirements for use at the option of the purchaser is includedin SpecificationA20/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
28、 Mechanical Test Coupons,S4.1 Additional Tension Test,S5. Charpy V-Notch Impact Test,S6. Drop Weight Test (for 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,S1
29、1. Ultrasonic Examination in accordance with Specification A577/A577M,S12. Ultrasonic Examination in accordance with Specification A578/A578M, andS17. Vacuum Carbon-Deoxidized Steel.SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue(
30、A225/A225M93(1999) that may impact the use of this standard.(1) Added 3.5 and Note 1 to be consistent with the terminology and requirements of Specification A20/A20M.(2) 3.3 was revised to be more general.Committee A01 has identified the location of selected changes to this standard since the last i
31、ssue(A225/A225M 03 (2007) that may impact the use of this standard. (Approved May 1, 2012.)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 48
32、53 in. 75 mm and under 60 415Over 3 in. 75 mm 55 380Elongation in 8 in. 200 mm, min, %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/
33、A225M 123(1) Table 1 was revised.(2) Section 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 determina
34、tion 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 reviewed every five years andif not revised, either reapproved or with
35、drawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that you
36、r 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 Conshohocken, PA 19428-2959,United States. Individual reprints (sing
37、le or multiple copies) of this standard may be 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 ASTM website (www.astm.org/COPYRIGHT/).A225/A225M 124
