1、Designation: A 735/A 735M 03Standard Specification forPressure Vessel Plates, Low-Carbon Manganese-Molybdenum-Columbium Alloy Steel, for Moderate andLower Temperature Service1This standard is issued under the fixed designation A 735/A 735M; the number immediately following the designation indicates
2、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. Scope*1.1 This specification covers low-carbon manganese
3、-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.1.2.1 Classes 1
4、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 provided in the as-r
5、olledand 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 specification. The individu
6、al 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 suitable for the
7、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 of the other. C
8、ombining values from thetwo systems may result in nonconformance with the specifi-cation.2. Referenced Documents2.1 ASTM Standards:A 20/A 20M Specification for General Requirements forSteel Plates for Pressure Vessels2A 435/A 435M Specification for Straight-Beam UltrasonicExamination of Steel Plates
9、2A 577/A 577M Specification for Ultrasonic Angle-BeamExamination of Steel Plates2A 578/A 578M Specification for Straight-Beam UltrasonicExamination of Plain and Clad Steel Plates for SpecialApplications23. General Requirements and Ordering Information3.1 Plates supplied to this product specification
10、 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 fororder
11、ing 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.3.4 The
12、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 plates that
13、 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,leveling, cutting to length, testing, inspection, conditioning,heat treatment (if applicable
14、), packaging, marking, loading forshipment, and certification.NOTE 1For plates produced from coil and furnished without heattreatment or with stress relieving only, three test results are reported foreach qualifying coil. Additional requirements regarding plates from coilare described in Specficatio
15、n A 20/A 20M.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 October 2003. Origi
16、nallyapproved in 1976. Last previous edition approved in 1999 as A 735/A 735M 99.2Annual Book of ASTM Standards, Vol 01.04.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United Sta
17、tes.4. Materials and Manufacture4.1 Steelmaking PracticeThe steel shall be killed andshall conform to the fine austenitic grain size requirement ofSpecification A 20/A 20M.5. Heat Treatment5.1 As-rolled Class 3 and 4 plates shall be precipitation heattreated in the temperature range from 1000 to 120
18、0 F 540 to650 C 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, so as to result inenhancement of some desirable property.5.2 When
19、quenching and tempering Class 1, 2, or 3 prod-ucts, the austenitizing temperature shall be 1725 F 940 Cmaximum. Tempering temperature shall be 1150 to 1300 F620 to 705 C.5.3 If the purchaser elects to perform the heat treatment, theplates shall be accepted on the basis of mill tests made fromtest co
20、upons 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 appropriate.The manufacturer or processor shall inform the purchas
21、er 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 represented by the test specimens, shallconform to the requirements
22、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 elongationmay be determined in a 2-in. 50-mm gage length thati
23、ncludes 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.7.2.2 The test results of 10 by 10-mm specimens shall meetan average of 20 ftlbf 27J at 50 F 45 C.8. Retreatment8.1 Heat-treate
24、d 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.TABLE 2 Tensile RequirementsClass 1Aksi MPaClass 2Aksi MPaClass 3ksi MPaClass 4ksi MPaYield strength, min. 65 450 70 485 75
25、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 A 20/A 20M for elongation
26、adjustments.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 suitable for use with thi
27、s 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 Tests,S8. Ultrasonic Examination in accordance with Specifica-tion A 435/A 435M,S9. Magnetic Particle Exa
28、mination,TABLE 1 Chemical RequirementsElementHeatAnalysis, %ProductAnalysis, %Carbon, max 0.06 0.08Manganese5/8 in. 16 mm andunder in thickness1.201.90 1.122.04Over 5/8 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 0.020.10Molyb
29、denum 0.230.47 0.200.50Copper (when specified) 0.200.35 0.180.37A 735/A 735M 032S11. 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, andS25. WeldabilitySUMMARY OF CHANGESCommittee A
30、01 has identified the location of selected changes to this standard since the last issue (A 735/A735M 99) that may impact the use of this standard.(1) Section 3 was revised to be consistent with the terminologyused in other A01.11 product specifications.(2) 5.1 and 5.3 were revised to include the pr
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32、hts, 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 additional
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34、 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 735/A 735M 033
