1、Designation: A735/A735M 12Standard Specification forPressure Vessel Plates, Low-Carbon Manganese-Molybdenum-Columbium Alloy Steel, for Moderate andLower Temperature Service1This standard is issued under the fixed designation A735/A735M; the number immediately following the designation indicates the
2、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 () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers low-carbon manganese-moly
3、bdenum-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.1.2.1 Classes 1 and 2
4、 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 of 75ksi 515 MPa. This grade can be provided in the as-rolled
5、 andprecipitation 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 specification. The individual ma
6、nufacturer 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 suitable for the mater
7、ials 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 of the other. Combin
8、ing values from thetwo systems may result in nonconformance with the specifi-cation.2. Referenced Documents2.1 ASTM Standards:2A20/A20M Specification for General Requirements for SteelPlates for Pressure VesselsA435/A435M Specification for Straight-Beam UltrasonicExamination of Steel PlatesA577/A577
9、M Specification for Ultrasonic Angle-Beam Ex-amination of Steel PlatesA578/A578M Specification for Straight-Beam UltrasonicExamination of Rolled Steel Plates for Special Applica-tions3. General Requirements and Ordering Information3.1 Material supplied to this material specification shallconform to
10、Specification A20/A20M. These requirements out-line the testing and retesting methods and procedures, permit-ted variations in dimensions, and mass, quality and repair ofdefects, marking, loading, and ordering information.3.2 In addition to the basic requirements of thisspecification, certain supple
11、mentary requirements are availablewhen additional control, testing, or examination is required tomeet end use requirements. The purchaser is referred to thelisted supplementary requirements in this specification and tothe detailed requirements in Specification A20/A20M.3.3 Coils are excluded from qu
12、alification 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 ofcoils into finished plates. Su
13、ch 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 relieving only, three test
14、results are reported for1This 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 May 1, 2012. Published June 2012. O
15、riginallyapproved in 1976. Last previous edition approved in 2007 as A735/A735M 03 (2007). DOI: 10.1520/A0735_A0735M-12.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer
16、 to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesNOTICE: This standard has either been superseded and replaced b
17、y a new version or withdrawn.Contact ASTM International (www.astm.org) for the latest information1each qualifying coil. Additional requirements regarding plates from coilare described in Specification A20/A20M.3.4 If the requirements of this specification are in conflictwith the requirements of Spec
18、ification A20/A20M, the require-ments of this specification shall prevail.4. Materials and Manufacture4.1 Steelmaking PracticeThe steel shall be killed andshall conform to the fine austenitic grain size requirement ofSpecification A20/A20M.5. Heat Treatment5.1 As-rolled Class 3 and 4 plates shall be
19、 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 cause precipitation ofsubmicroscopical constituents, and so forth,
20、so as to result inenhancement of some desirable property.5.2 When quenching and tempering Class 1, 2, or 3products, the austenitizing temperature shall be 1725F940C maximum. Tempering temperature shall be 1150 to1300F 620 to 705C.5.3 If the purchaser elects to perform the heat treatment, theplates s
21、hall 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 shall heattreat the test coupons under conditions it considers approp
22、riate.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. Mechanical Properties7.1 Tension Test:7.1.1 The plates, as represen
23、ted 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 rectangular testspecimen may be used for the tension test, and the el
24、ongationmay 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 A20/A20M.7.2.2 The test results of 10 by 10-mm specimens shall meetan average
25、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 inspection.9. Keywords9.1 alloy steel plate; low-carbon; lower temperature serv
26、ice;manganese-molybdenum-columbium; parts for pressure con-taining service; steel plates for pressure vesselsTABLE 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 1.412.36Phospho
27、rus, max 0.025 0.025Sulfur, max 0.025 0.025Silicon, max 0.40 0.45Columbium 0.030.09 0.020.10Molybdenum 0.230.47 0.200.50Copper (when specified) 0.200.35 0.180.37A735/A735M 122SUPPLEMENTARY REQUIREMENTSSupplementary requirements shall not apply unless specified in the purchase order.A list of standar
28、dized supplementary requirements for use at the option of the purchaser is includedin Specification A20/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 MechanicalTest
29、 Coupons,S5. Charpy V-Notch Impact Test,S6. Drop Weight Test (for Material 0.625 in. 16 mm andOver in Thickness),S8. Ultrasonic Examination in accordance with Specifica-tion A435/A435M,S9. Magnetic Particle Examination,S11. Ultrasonic Examination in accordance with Specifica-tion A577/A577M,S12. Ult
30、rasonic Examination in accordance with Specifica-tion A578/A578M,S24. Strain Age Test, andS25. Weldability.SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue(A735/A735M 03 (2007) that may impact the use of this standard. (Approved Ma
31、y 2012.)(1) Table 1 was revised.(2) Section 3 was editorially revised.(3) Section 9 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 determinat
32、ion 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 withd
33、rawn. 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 your
34、 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 (singl
35、e 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
36、(www.astm.org/COPYRIGHT/).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 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 A20/A20M for elongation adjustments.A735/A735M 123
