1、Designation:A203/A203M97(Reapproved2007)1Designation: A203/A203M 12Standard 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
2、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.This standard has been approved for use by agencies of the Department of Defense.1NOTEEditorial corr
3、ections were made to the Supplementary Requirements section in April 2008.1. Scope*1.1 This specification2covers nickel-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
4、:GradeNominal NickelContent %Yield Strength, min,ksi MPaTensile Strength,min, ksi MPaA 2.25 37 255 65 450B 2.25 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 ccccOver 2 in. 50 mm 50 345 75 5151.3 The maximum thickness of plates is limited only by the
5、capacity of the composition to meet the specified mechanicalproperty requirements. 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
6、inch-pound units or SI units 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 n
7、onconformance with this specification.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 Ex
8、amination of Steel PlatesA578/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 o
9、utline thetesting and retesting methods and procedures, permissible variations in dimensions and mass, quality and repair of imperfections,marking, loading, etc.3.2Specification . These requirements outline the testing and retesting methods and procedures, permitted variations in1This specification
10、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 approved in 1937. Last previous
11、 edition approved in 2003 as A203/A203M97(2003). DOI:10.1520/A0203_A0203M-97R07E01.Current edition approved May 1, 2012. Published June 2012. Originally approved in 1937. Last previous edition approved in 2003 as A203/A203M 97 (2003)1. DOI:10.1520/A0203_A0203M-12.2For ASME Boiler and Pressure Vessel
12、 Code applications, see related Specification SA-203/SA-203M in Section II of that Code.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 information, refer to the standards Document Summ
13、ary page on the ASTM website.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 technically possible to adequately depict all changes accurately, ASTM recommend
14、s 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 standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700,
15、West Conshohocken, PA 19428-2959, United States.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, or examin
16、ation 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 the basisof purchase that should be complied with when purchasing material t
17、o this specification.3.3In 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. These include:3.3.1Vacuum treatment,3.3.2Additional or special tension testi
18、ng,3.3.3Impact testing, and3.3.4Nondestructive examination.3.4The purchaser is referred to the listed supplementary requirements in this specification and to the detailed requirements inSpecification A20/A20M.3.5If3.3 If the requirements of this specification are in conflict with the requirements of
19、 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 grain size requirement of SpecificationA20/A20M.5. Heat Treatment5.1 All plates shall be thermally treated as follo
20、ws:5.1.1 All plates of Grades A, B, D, and E shall be normalized except as permitted by 5.1.1.1.5.1.1.1 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
21、less than 1100F 595C for not less than12 h.5.1.2 All plates of Grade F shall be heat treated by heating into the austenitic range, quenching in water, and tempering at notless than 1100F 595C for not less than12 h.6. Chemical Composition6.1 The steel shall conform to the chemical requirements shown
22、in Table 1 unless otherwise modified in accordance withSupplementary Requirement S17, Vacuum Carbon-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 Tab
23、le 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 nominal thickness of34 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 t
24、he fracture and that shows the greatest elongation. When this specimen is used, theelongation shall 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 sh
25、all meet 20 ft lbf 27 J. The test temperature and orientation shall be a matter of agreement betweenthe 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 RequirementsElementsComposition, %Grad
26、e 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 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.
27、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, maxA0.035 0.035 0.035 0.035 0.025 0.0250.025A203/A203M 122ElementsComposition, %Grade A Grade B Grade D Grades E and FPhosphorus, maxA0.025 0.035 0.035 0.035 0.025 0.0250.025Sulfur,
28、maxA0.035 0.035 0.035 0.035 0.025 0.0250.025Sulfur, maxA0.025 0.035 0.035 0.035 0.025 0.0250.025Silicon: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 3.18
29、3.82 3.183.82AApplies to both heat and product analyses.TABLE 2 Tensile 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
30、 and under 37 255 40 275 55 380Over 2 in. 50 mm 37 255 40 275 50 345Elongation in 8 in. 200 mm min, %A19 17 .Elongation in 2 in. 50 mm min, %A,B23 21 20ASee Specification A20/A20Mfor elongation adjustments.BSee 7.1.1.8. Keywords8.1 alloy steel plate; nickel alloy steel; pressure containing parts; pr
31、essure vessel steels; steel plates; steel plates for pressurevessel applicationsSUPPLEMENTARY REQUIREMENTSSupplementary requirements shall not apply unless specified in the order.Alist of standardized supplementary requirements for use at the option of the purchaser are includedin Specification A20/
32、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 Additional Tension Test,S5. Charpy V-Notch Impact Test,S6. Drop Weight Test (for Materia
33、l 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 with S
34、pecification A578/A578M, andS17.Vacuum Carbon-Deoxidized Steel.S17. 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)1) that may impact the use of this standard. (Approved May 1, 2
35、012.)(1) Table 1 was revised.(2) Section 3 was editorially revised.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
36、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 withdrawn. Your comments are inv
37、ited 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 your comments have not received
38、 a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.A203/A203M 123This 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
39、 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/).A203/A203M 124
