1、Designation: A203/A203M 12A203/A203M 17Standard Specification forPressure Vessel Plates, Alloy Steel, Nickel1This standard is issued under the fixed designation A203/A203M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year o
2、f 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.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope*1.1 This specification2 covers ni
3、ckel-alloy steel plates intended primarily for welded pressure vessels.1.2 Plates under this specification are available with four strength levels and two nickel compositions as follows:Grade Nominal NickelContent % Yield Strength, min,ksi MPa Tensile Strength,min, ksi MPaA 2.25 37 255 65 450B 2.25
4、40 275 70 485D 3.50 37 255 65 450E 3.50 40 275 70 485F 3.502 in. 50 mm and under 55 380 80 550 cccc2 in. 50 mm and under 55 380 80 550Over 2 in. 50 mm 50 345 75 5151.3 The maximum thickness of plates is limited only by the capacity of the composition to meet the specified mechanicalproperty requirem
5、ents. However, current practice normally limits the maximum thickness of plates furnished under thisspecification as follows:Grade Maximum Thickness, in. mmA 6 150B 6 150D 4 100E 4 100F 4 1001.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Withi
6、n 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 this specification.1.5 This international standard was dev
7、eloped 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 Trade (TBT) Committee.2. Referenced Docum
8、ents2.1 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 PlatesA578/A578M Specification for Str
9、aight-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 and retesting methods and procedures, p
10、ermitted variations in dimensions, and mass, quality and repair of defects, marking,loading, and ordering information.1 This specification is under the jurisdiction ofASTM Committee A01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee A01.11on Steel Plates
11、 for Boilers and Pressure Vessels.Current edition approved May 1, 2012Nov. 1, 2017. Published June 2012November 2017. Originally approved in 1937. Last previous edition approved in 20032012 asA203/A203M 97 (2003)A203/A203M 12.1. DOI: 10.1520/A0203_A0203M-12.10.1520/A0203_A0203M-17.2 For ASME Boiler
12、and Pressure Vessel Code applications, see related Specification SA-203/SA-203M 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 Standardsvolume information, refer to the standa
13、rds 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 possible to adequately depict all changes accurately
14、, 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 standardCopyright ASTM International, 100 Barr Harbor Drive
15、, PO Box C700, West Conshohocken, PA 19428-2959. United States13.2 In addition to the basic requirements of this specification, certain supplementary requirements are available when additionalcontrol, testing, or examination is required to meet end use requirements. The purchaser is referred to the
16、listed supplementaryrequirements in this specification and to the detailed requirements in Specification A20/A20M.3.3 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 Manufa
17、cture4.1 Steelmaking PracticeThe steel shall be killed and shall conform to the fine grain size requirement of SpecificationA20/A20M.5. Heat Treatment5.1 All plates shall be thermally treated as follows:5.1.1 All plates of Grades A, B, D, and E shall be normalized except as permitted by 5.1.1.1.5.1.
18、1.1 If approved by the purchaser for Grades A, B, D, and E, cooling rates faster than air cooling are permissible forimprovement of the toughness, provided the plates are subsequently tempered at not less than 1100F 595C for not less than12 h.5.1.2 All plates of Grade F shall be heat treated by heat
19、ing into the austenitic range, quenching in water, and tempering at notless than 1100F 595C for not less than 12 h.6. Chemical Composition6.1 The steel shall conform to the chemical requirements shown in Table 1 unless otherwise modified in accordance withSupplementary Requirement S17, Vacuum Carbon
20、-Deoxidized Steel, in Specification A20/A20M.7. Mechanical Properties7.1 Tension Test RequirementsThe material as represented by the tension test specimens shall conform to the requirementsshown in Table 2.7.1.1 For plates that have been heat treated in accordance with 5.1.1.1 or 5.1.2 and have a no
21、minal thickness of 34 in. 20 mmand under, the 112-in. (40-mm) wide rectangular specimen may be used for the tension test, and the elongation may be determinedin a 2-in. 50-mm gage length that includes the fracture and that shows the greatest elongation. When this specimen is used, theelongation shal
22、l be not less than 23 %.7.2 Impact Test Requirements:7.2.1 Plates of Grades A, B, D, and E that have been heat treated in accordance with 5.1.1.1 shall be Charpy V-notch impacttested. The impact test shall meet 20 ft lbf 27 J. The test temperature and orientation shall be a matter of agreement betwe
23、enthe purchaser and supplier.7.2.2 Grade F plates shall be impact tested in accordance with Supplementary Requirement S5 in Specification A20/A20M.TABLE 1 Chemical RequirementsElements Composition, %Grade A Grade B Grade D Grades E and FCarbon, max:AUp to 2 in. 50 mm in thickness 0.17 0.21 0.17 0.20
24、Over 2 in. to 4 in. 100 mm incl. in thickness 0.20 0.24 0.20 0.23Over 4 in. 100 mm in thickness 0.23 0.25 . .Manganese, max:Heat analysis:2 in. 50 mm and under 0.70 0.70 0.70 0.70Over 2 in. 50 mm 0.80 0.80 0.80 0.80Product analysis:2 in. 50 mm and under 0.78 0.78 0.78 0.78Over 2 in. 50 mm 0.88 0.88
25、0.88 0.88Phosphorus, maxA 0.025 0.025 0.025 0.025Sulfur, maxA 0.025 0.025 0.025 0.025Silicon:Heat analysis 0.150.40 0.150.40 0.150.40 0.150.40Product analysis 0.130.45 0.130.45 0.130.45 0.130.45Nickel:Heat analysis 2.102.50 2.102.50 3.253.75 3.253.75Product analysis 2.032.57 2.032.57 3.183.82 3.183.
26、82A Applies to both heat and product analyses.A203/A203M 172TABLE 1 Chemical RequirementsElements Composition, %Grade A Grade B Grade D Grades E and FCarbon, max:AUp to 2 in. 50 mm in thickness 0.17 0.21 0.17 0.20Over 2 in. to 4 in. 100 mm incl. in thickness 0.20 0.24 0.20 0.23Over 4 in. 100 mm in t
27、hickness 0.23 0.25 . .Manganese, max:Heat analysis:2 in. 50 mm and under 0.70 0.70 0.70 0.70Over 2 in. 50 mm 0.80 0.80 0.80 0.80Product analysis:2 in. 50 mm and under 0.78 0.78 0.78 0.78Over 2 in. 50 mm 0.88 0.88 0.88 0.88Phosphorus, maxA 0.025 0.025 0.025 0.025Sulfur, maxA 0.025 0.025 0.025 0.025Si
28、licon:Heat analysis 0.150.40 0.150.40 0.150.40 0.150.40Product analysis 0.130.45 0.130.45 0.130.45 0.130.45Nickel:Heat analysis 2.102.50 2.102.50 3.253.75 3.253.75Product analysis 2.032.57 2.032.57 3.183.82 3.183.82A Applies to both heat and product analyses.TABLE 2 Tensile RequirementsGrades A and
29、D Grades B and E Grade Fksi MPa ksi MPa ksi MPaTensile strength2 in. 50 mm and under 6585 450585 7090 485620 80100 550690Over 2 in. 50 mm 6585 450585 7090 485620 7595 515655Yield strength, min2 in. 50 mm and under 37 255 40 275 55 380Over 2 in. 50 mm 37 255 40 275 50 345Elongation in 8 in. 200 mm mi
30、n, %A 19 17 .Elongation in 2 in. 50 mm min, %A,B 23 21 20A See Specification A20/A20M for elongation adjustments.B See 7.1.1.8. Keywords8.1 alloy steel plate; nickel alloy steel; pressure containing parts; pressure vessel steels; steel plates; steel plates for pressurevessel applicationsTABLE 2 Tens
31、ile RequirementsGrades A and D Grades B and E Grade Fksi MPa ksi MPa ksi MPaTensile strength2 in. 50 mm and under 6585 450585 7090 485620 80100 550690Over 2 in. 50 mm 6585 450585 7090 485620 7595 515655Yield strength, min2 in. 50 mm and under 37 255 40 275 55 380Over 2 in. 50 mm 37 255 40 275 50 345
32、Elongation in 8 in. 200 mm min, %A 19 17 .Elongation in 2 in. 50 mm min, %A,B 23 21 20A See Specification A20/A20M for elongation adjustments.B See 7.1.1.A203/A203M 173SUPPLEMENTARY REQUIREMENTSSupplementary requirements shall not apply unless specified in the order.Alist of standardized supplementa
33、ry requirements for use at the option of the purchaser are includedin Specification A20/A20M. Those which are considered suitable for use with this specification arelisted below by title.S1. Vacuum Treatment,S2. Product Analysis,S3. Simulated Post-Weld Heat Treatment of Mechanical Test Coupons,S4.1
34、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,S11. Ultrasonic Examination in a
35、ccordance 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(A203/A203M 97 (2003)A203/A203M
36、 121) that may impact the use of this standard. (Approved May 1,2012Nov. 1, 2017.)(1) Table 1 wasRevised 1.3 revised.to remove current practice guidelines.(2) Section 3 was editorially revised.ASTM International takes no position respecting the validity of any patent rights asserted in connection wi
37、th any item mentionedin this standard. 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 tech
38、nical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn.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 considerati
39、on at a meeting of theresponsible 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 Har
40、bor 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). 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
