1、Designation: A 735/A 735M 03 (Reapproved 2007)Standard Specification forPressure Vessel Plates, Low-Carbon Manganese-Molybdenum-Columbium Alloy Steel, for Moderate andLower Temperature Service1This standard is issued under the fixed designationA 735/A 735M; the number immediately following the desig
2、nation indicates the yearof original adoption or, in the case of revision, 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. Scope1.1 This specification covers low-
3、carbon manganese-molybdenum-columbium alloy steel plates for piping compo-nents and welded pressure vessels.1.2 Four different classes are covered, which provide vari-ous tensile strength properties. A Charpy V-notch energyabsorption requirement of 20 ftlbf 27J at 50F 45C isspecified for all grades.
4、1.2.1 Classes 1 and 2 provide minimum yield strengthlevels of 65 ksi 450 MPa and 70 ksi 485 MPa respectively.Both classes can be provided in the as-rolled condition or in thequenched-and-tempered condition.1.2.2 Class 3 provides a minimum yield strength level of75 ksi 515 MPa. This grade can be prov
5、ided in the as-rolledand precipitation heat-treated condition or in the quenched-and-tempered condition.1.2.3 Class 4 provides a yield strength level of 80 ksi 550MPa in the as-rolled and precipitation heat-treated condition.1.3 Current practice limits plate thickness furnished underthis specificati
6、on. The individual manufacturer should beconsulted on size and thickness limitations.1.4 Welding procedures are of fundamental importance andmust be such as not to adversely affect the properties of thematerial, especially in the heat-affected zone. It is presupposedthat welding procedures will be s
7、uitable for the materials beingwelded.1.5 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard. Within the text, theSI units are shown in brackets. The values stated in eachsystem are not exact equivalents; therefore, each system mustbe used independently
8、 of the other. Combining values from thetwo systems may result in nonconformance with the specifi-cation.2. Referenced Documents2.1 ASTM Standards:2A 20/A 20M Specification for General Requirements forSteel Plates for Pressure VesselsA 435/A 435M Specification for Straight-Beam UltrasonicExamination
9、 of Steel PlatesA 577/A 577M Specification for Ultrasonic Angle-BeamExamination of Steel PlatesA 578/A 578M Specification for Straight-Beam UltrasonicExamination of Rolled Steel Plates for Special Applica-tions3. General Requirements and Ordering Information3.1 Plates supplied to this product specif
10、ication shall con-form to the requirements of Specification A 20/A 20M, whichoutlines the testing and retesting methods and procedures,permissible variations in dimensions and mass, quality andrepair of defects, marking, loading, and so forth.3.2 Specification A 20/A 20M also establishes the rules f
11、orordering information that should be compiled when purchasingplates to this specification.3.3 In addition to the basic requirements of this specifica-tion, certain supplementary requirements are available whereadditional control, testing, or examination is required to meetthe end use requirements.3
12、.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 Coils are excluded from qualification to this specifica-tion until they are processed into finished plates. Platesproduced from coil means plat
13、es that have been cut toindividual lengths from coil. The processor directly controls, oris responsible for, the operations involved in the processing ofcoils into finished plates. Such operations include decoiling,1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainles
14、s Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.11 on Steel Plates for Boilers and Pressure Vessels.Current edition approved Nov. 1, 2007. Published March 2008. Originallyapproved in 1976. Last previous edition approved in 2003 as A 735/A 735M 03.2For referenced ASTM s
15、tandards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocke
16、n, PA 19428-2959, United States.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 relieving only, three test
17、results are reported foreach qualifying coil. Additional requirements regarding plates from coilare described in Specification A 20/A 20M.4. Materials and Manufacture4.1 Steelmaking PracticeThe steel shall be killed andshall conform to the fine austenitic grain size requirement ofSpecification A 20/
18、A 20M.5. Heat Treatment5.1 As-rolled Class 3 and 4 plates shall be precipitation heattreated in the temperature range from 1000 to 1200F 540 to650C for a time to be determined by the manufacturer orprocessor. Precipitation heat treatment is a subcritical tempera-ture thermal treatment performed to c
19、ause precipitation ofsubmicroscopical constituents, and so forth, so as to result inenhancement of some desirable property.5.2 When quenching and tempering Class 1, 2, or 3 prod-ucts, the austenitizing temperature shall be 1725F 940Cmaximum. Tempering temperature shall be 1150 to 1300F620 to 705C.5.
20、3 If the purchaser elects to perform the heat treatment, theplates shall be accepted on the basis of mill tests made fromtest coupons heat treated as specified in the purchase order. Ifthe test coupon heat treatment requirements are not specified inthe purchase order, the manufacturer or processor s
21、hall heattreat the test coupons under conditions it considers appropriate.The manufacturer or processor shall inform the purchaser ofthe heat treatment used for the test coupons.6. Chemical Requirements6.1 The steel shall conform to the requirements as tochemical composition prescribed in Table 1.7.
22、 Mechanical Properties7.1 Tension Test:7.1.1 The plates, as represented by the test specimens, shallconform to the requirements given in Table 2.7.1.2 For nominal plate thicknesses of34 in. 20 mm andunder, where requirements for elongation in 2 in. 50 mm areto be determined, the 112-in. 40-mm wide r
23、ectangular testspecimen may be used for the tension test, and the elongationmay be determined in a 2-in. 50-mm gage length thatincludes the fracture and shows the greatest elongation.7.2 Notch-Toughness Test:7.2.1 Charpy V-notch impact tests shall be made in accor-dance with Specification A 20/A 20M
24、.7.2.2 The test results of 10 by 10-mm specimens shall meetan average of 20 ftlbf 27J at 50F 45C.8. Retreatment8.1 Heat-treated plates that fail to meet the tensile ornotch-toughness requirements may be re-heat treated. Allrequired tests shall be repeated when the plates are resubmittedfor inspectio
25、n.TABLE 1 Chemical RequirementsElementHeatAnalysis, %ProductAnalysis, %Carbon, max 0.06 0.08Manganese58 in. 16 mm and under inthickness1.201.90 1.122.04Over58 in. 16 mm 1.502.20 1.412.36Phosphorus, max 0.035 0.035Sulfur, max 0.025 0.025Silicon, max 0.40 0.45Columbium 0.030.09 0.020.10Molybdenum 0.23
26、0.47 0.200.50Copper (when specified) 0.200.35 0.180.37A 735/A 735M 03 (2007)2SUPPLEMENTARY 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 Specificatio
27、n A 20/A 20M. Those that 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 MechanicalTest Coupons,S5. Charpy V-Notch Impact Test,S6. Drop Weight Test (for Material 0.625 in. 16 mm andOv
28、er in Thickness),S8. Ultrasonic Examination 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,S24. Strain Age Test, and
29、S25. Weldability.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 rights, and the riskof infringement of
30、 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 either for revision of this standard or for a
31、dditional 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 hearing you shouldmake your views known to
32、 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
33、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).TABLE 2 Tensile RequirementsClass 1,Aksi MPa Class 2,Aksi MPa Class 3, ksi MPa Class 4, ksi MPaYield strength, min 65 450 70 485 75 515 80 550Tensile strength 80100
34、 550690 85105 585725 90110 620760 95115 655790Elongation in 8 in. 200 mm, min, %B12 12 12 12Elongation in 2 in. 50 mm, min, %B18 18 18 18AClass 1 as-rolled and Class 2 as-rolled are limited to 1 in. 25 mm maximum thickness.BSee Specification A 20/A 20M for elongation adjustments.A 735/A 735M 03 (2007)3
