1、Designation: A736/A736M 12A736/A736M 17Standard Specification forPressure Vessel Plates, Low-Carbon Age-Hardening Nickel-Copper-Chromium-Molybdenum-Columbium (Niobium) AlloySteel1This standard is issued under the fixed designation A736/A736M; the number immediately following the designation indicate
2、s 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 () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification2 covers low-carbon age-har
3、dening alloy steel plates for welded pressure vessels and piping components.The specification covers nickel-copper-chromium-molybdenum-columbium (niobium) steel.1.2 Plates under this specification are available as follows:1.2.1 Available in Grade A, Class 3 only.1.2.1.1 Quenched and precipitation he
4、at treated with a minimum specified tensile strength of 85 ksi for thinner plates and 75and 70 ksi for thicker plates, with the minimum tensile strength dependent upon the plate thickness. The maximum thickness ofGrade A, Class 3 plates is limited only by the capacity of the chemical composition and
5、 heat treatment to meet the specifiedmechanical property requirements; however, current practice usually limits the maximum thickness to 8 in. 200 mm.require-ments.1.3 This specification is expressed in both inch-pound units and in SI units. However, unless the order specifies the applicable“M” spec
6、ification designation (SI units), the material shall be furnished in inch-pound units.1.4 The values stated in either 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
7、. 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 developed in accordance with internationally recognized principles on standardizationestablished in the Deci
8、sion on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:3A20/A20M Specification for General Requirements for Steel Plates for Pressure Ves
9、selsA435/A435M Specification for Straight-Beam Ultrasonic Examination of Steel PlatesA577/A577M Specification for Ultrasonic Angle-Beam Examination of Steel PlatesA578/A578M Specification for Straight-Beam Ultrasonic Examination of Rolled Steel Plates for Special Applications3. General Requirements
10、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, permitted variations in dimensions, and mass, quality, and repair of defects, marking,loading, and orderin
11、g information.3.2 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 listed supplementaryrequirements in this specific
12、ation and to the detailed requirements in Specification A20/A20M.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 for Boilers and Pressure Vessels.Current edition app
13、roved Nov. 1, 2012Nov. 1, 2017. Published January 2013November 2017. Originally approved in 1976. Last previous edition approved in 20072012as A736/A736M 03 (2007).A736/A736M 12. DOI: 10.1520/A0736_A0736M-12.10.1520/A0736_A0736M-17.2 For ASME Boiler and Pressure Vessel Code applications, see related
14、 Specification SA-736 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 standards Document Summary page on the ASTM website.This documen
15、t 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 recommends that users consult prior editions as app
16、ropriate. 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, PO Box C700, West Conshohocken, PA 19428-2959. United St
17、ates13.3 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 Manufacture4.1 The steel shall be killed and shall conform to the fine austenitic grain size requirement of Specifi
18、cation A20/A20M.5. Heat Treatment5.1 The plates shall be quenched in a liquid medium from a temperature in the range from 1600 to 1700F 870 to 930C andthen precipitation heat treated at a temperature in the range from 1000 to 1300F 540 to 705C for a time to be determined bythe manufacturer or proces
19、sor.5.2 If the purchaser elects to perform the thermal treatment, the plates shall be accepted on the basis of mill tests made fromtest coupons heat treated as specified in the purchase order. If the test coupon heat treatment requirements are not specified in thepurchase order, the manufacturer or
20、processor shall heat treat the test coupons under conditions it considers appropriate. Themanufacturer or processor shall inform the purchaser of the procedure followed in thermally treating the test coupons at the mill.6. Chemical Composition6.1 The steel shall conform to the requirements as to che
21、mical composition given in Table 1.7. Mechanical Properties7.1 Tension Test:7.1.1 The plates, as represented by the test specimens, shall conform to the requirements given in Table 2.7.1.2 For nominal plate thicknesses of 34 in. 20 mm and under, the 112-in. 40-mm wide rectangular test specimen may b
22、eused for the tension test, and the elongation may be determined in a 2-in. 50-mm gage length that includes the fracture and showsthe greatest elongation.7.2 Notch-Toughness Test:7.2.1 Charpy V-notch impact tests shall be made in accordance with Specification A20/A20M.7.2.2 The test results of 10 by
23、 10-mm specimens shall meet an average minimum value of 20 ftlbf 27 J at 50F 45C.TABLE 1 Chemical RequirementsElement Composition, %Grade ACarbon, maxHeat analysis 0.07Product analysis 0.09ManganeseHeat analysis 0.400.70Product analysis 0.350.78Phosphorus, maxA 0.025Sulfur, maxA 0.025Silicon, maxHea
24、t analysis 0.40Product analysis 0.45ChromiumHeat analysis 0.600.90Product analysis 0.560.94NickelHeat analysis 0.701.00Product analysis 0.671.03MolybdenumHeat analysis 0.150.25Product analysis 0.120.28CopperHeat analysis 1.001.30Product analysis 0.951.35Columbium, minColumbium (Niobium),B minHeat an
25、alysis 0.02Product analysis 0.01A Applies to both heat analysis and product analysis.B Columbium and niobium are interchangeable names for the same element andboth names are acceptable in A01 specifications.A736/A736M 1728. Keywords8.1 alloy steel; alloy steel plate; pressure vessel plate; low carbo
26、n; age hardening; pressure vessels; piping components;precipitation heat treated; nickel-copper-chromium-molybdenum-columbium (niobium)SUPPLEMENTARY REQUIREMENTSSupplementary requirements shall not apply unless specified in the purchase order.A list of standardized supplementary requirements for use
27、 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 Mechanical Test Coupons,S4. Additional Tension Test,S5
28、. Charpy V-Notch Impact Test,S6. Drop-Weight Test (for Material 0.625 in. 16 mm and Over in Thickness),S8. Ultrasonic Examination in accordance with Specification A435/A435M,S9. Magnetic Particle Examination,S10. Charpy V-Notch Test Curve,TABLE 2 Tensile RequirementsGrade AClass 3,ksi MPaYield stren
29、gth, min34 in. and under 7520 mm and under 515Over 34 to 1 in., incl 75Over 20 to 25 mm, incl 515Over 1 to 2 in., incl 75Over 25 to 50 mm, incl 515Over 2 to 4 in., incl 65Over 50 to 100 mm, incl 450Over 4 in. 60Over 100 mm 415Tensile strength34 in. and under 8510520 mm and under 585725Over 34 to 1 i
30、n., incl 85105Over 20 to 25 mm, incl 585725Over 1 to 2 in., incl 85105Over 25 to 50 mm, incl 585725Over 2 to 4 in., incl 7595Over 50 to 100 mm, incl 515655Over 4 in. 7090Over 100 mm 485620Elongation2 in. 50 mm, min, %A 20A See Specification A20/A20M for elongation adjustment.A736/A736M 173S11. Ultra
31、sonic Examination in accordance with Specification A577/A577M,S12. Ultrasonic Examination in accordance with Specification A578/A578M,S13. NDT Temperature Determination,S15. Reduction of Area Measurement,S17. Vacuum Carbon-Deoxidized Steel,S19. Restricted Chemical Requirements,S24. Strain Age Test,
32、andS25. Weldability.SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue(A736/A736M 03 (2007)A736/A736M 12) that may impact the use of this standard. (Approved Nov. 1,2012Nov. 1, 2017.)(1) Revised title for accuracy.of standard in incl
33、ude niobium.(2) Revised Section 11.2.1.1 to update grade and class information.remove thickness guidelines.(3) Revised SectionTable 1 3to remove redundancy.include niobium and accompanying footnote.(4) Revised Section 58 to update class requirements.include niobium.(5) Added Section 8.(6) Revised Ta
34、ble 1 and Table 2 to refer solely to Grade A and Grade A, Class 3.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 s
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