1、Designation: A 225/A 225M 03Standard Specification forPressure Vessel Plates, Alloy Steel, Manganese-Vanadium-Nickel1This standard is issued under the fixed designation A 225/A 225M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision,
2、the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon (e) 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 laye
3、red pres-sure vessels.1.2 Plates under this specification are available in twogrades having different strength levels as follows:GradeTensile Strength,ksi MPaCD105135 7259303 in. 75 mm and underOver 3 in. 75 mm80105 55072575100 5156901.3 The maximum thickness of plates is limited only by thecapacity
4、 of the chemical composition to meet the specifiedmechanical property requirements; however, current mill prac-tice 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 unitsare to be regarded separately as standa
5、rd. Within the text, theSI units are shown in brackets. The values stated in eachsystem are not exact equivalents; therefore, each system mustbe used independently of the other. Combining values from thetwo systems may result in nonconformance with the specifi-cation.2. Referenced Documents2.1 ASTM
6、Standards:A 20/A 20M Specification for General Requirements forSteel Plates for Pressure Vessels3A 435/A 435M Specification for Straight-Beam UltrasonicExamination of Steel Plates3A 577/A 577M Specification for Ultrasonic Angle-BeamExamination of Steel Plates3A 578/A 578M Specification for Straight-
7、Beam UltrasonicExamination of Plain and Clad Steel Plates for SpecialApplications33. General Requirements and Ordering Information3.1 Plates supplied to this product specification shall con-form to Specification A 20/A 20M, which outlines the testingand retesting methods and procedures, permissible
8、variationsin dimensions and mass, quality and repair of defects, marking,loading, etc.3.2 Specification A 20/A 20M also establishes the rules forordering information that should be complied with whenpurchasing plates to this specification.3.3 In addition to the basic requirements of this specifica-t
9、ion, certain supplementary requirements are available whereadditional control, testing, or examination is required to meetend use requirements.3.4 The purchaser is referred to the listed supplementaryrequirements in this specification and to the detailed require-ments in Specification A 20/A 20M.3.5
10、 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 responsible for, the operations involved in the processing ofcoi
11、ls 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 from coil and furnished without heattreatment or with stress
12、relieving only, three test results are reported foreach qualifying coil. Additional requirements regarding plates from coilare described in Specification A 20/A 20M.3.6 If the requirements of this specification are in conflictwith the requirements of Specification A 20/A 20M, the re-quirements of th
13、is 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 Vessels.Current edition approved Sept. 10, 2003. Published O
14、ctober 2003. Originallyapproved in 1939. Last previous edition approved in 1999 as A 225/A 225M 93(1999).2For ASME Boiler and Pressure Vessel Code applications, see related Specifi-cation SA-225/SA-225M in Section II of that Code.3Annual Book of ASTM Standards, Vol 01.04.1*A Summary of Changes secti
15、on appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4. Materials and Manufacture4.1 Steelmaking PracticeThe steel shall be killed andshall conform to the fine austenitic grain size requirement ofSpec
16、ification A 20/A 20M.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-reliev
17、ed, or both.6. 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 A 20/A 20M.7. Mechanical Properties7.1 Tension TestThe plates, as re
18、presented by the 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 t
19、hat shows the greatestelongation.SUPPLEMENTARY REQUIREMENTSSupplementary requirements shall not apply unless specified in the purchase order.A list of standardized supplementary requirements for use at the option of the purchaser is includedin Specification A 20/A 20M. Those that are considered suit
20、able for use with this specification arelisted below by title.S1. Vacuum Treatment,S2. Product Analysis,S3. Simulated Post-Weld Heat Treatment of MechanicalTest Coupons,S4.1 Additional Tension Test,S5. Charpy V-Notch Impact Test,S6. Drop Weight Test,S7. High-Temperature Tension Test,S8. Ultrasonic E
21、xamination in accordance with Specifica-tion A 435/A 435M,S9. Magnetic Particle Examination,S11. Ultrasonic Examination in accordance with Specifica-tion A 577/A 577M,S12. Ultrasonic Examination in accordance with Specifica-tion A 578/A 578M, andS17. Vacuum Carbon-Deoxidized Steel.TABLE 1 Chemical R
22、equirementsElementsComposition, %Grade C Grade DCarbon, maxA0.25 0.20Manganese, max:Heat analysisProduct analysis1.601.721.701.84Phosphorus, maxASulfur, maxASilicon:0.0350.0350.0350.035Heat analysisProduct analysisVanadium:0.150.400.130.450.100.500.080.56Heat analysisProduct analysisNickel:0.130.180
23、.110.200.100.180.080.20Heat analysisProduct analysis0.400.700.370.730.400.700.370.73AApplies to both heat and product analyses.TABLE 2 Tensile RequirementsGrade C Grade Dksi MPa ksi MPaTensile strengthAll thicknesses3 in. 75 mm andunderOver 3 in. 75 mm105135 7259308010575100550725515690Yield strengt
24、h, minAAll thicknesses3 in. 75 mm andunderOver 3 in. 75 mm70 485 6055415380Elongation in 8 in.200 mm,min, %B.Elongation in 2 in. 50mm, min, %B20 19Elongation in 5D,min, %B17ADetermined by either the 0.2 % offset method or the 0.5 % extension-under-load method.BSee Specification A 20/A 20M for elonga
25、tion adjustment.A 225/A 225M 032SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue (A 225/A225M 93 (1999) that may impact the use of this standard.(1) Added 3.5 and Note 1 to be consistent with the terminologyand requirements of Spec
26、ification A 20/A 20M.(2) 3.3 was revised to be more general.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 pa
27、tent 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 withdrawn. Your comments are invited ei
28、ther 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 your comments have not received a fair
29、 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 (single 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).A 225/A 225M 033
