1、Designation: A352/A352M 06 (Reapproved 2012)A352/A352M 17Standard Specification forSteel Castings, Ferritic and Martensitic, for Pressure-Containing Parts, Suitable for Low-Temperature Service1This standard is issued under the fixed designation A352/A352M; the number immediately following the design
2、ation 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 () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by a
3、gencies of the U.S. Department of Defense.1. Scope*1.1 This specification2 covers steel castings for valves, flanges, fittings, and other pressure-containing parts intended primarilyfor low-temperature service.1.2 Several grades of ferritic steels and one grade of martensitic steel are covered. Sele
4、ction of analysis will depend on designand service conditions (Note).(Note 1). The temperature shown is the lowest temperature at which the material ordinarily isrequired to meet the impact requirements of this specification (see Supplementary Requirement S22, Impact Test Temperatures).Users should
5、note that hardenability of some of the grades mentioned may restrict the maximum size at which the requiredmechanical properties are obtainable (see Appendix X1).Grade Usual Minimum TestingTemperatures, F CLCA 25 32LCB 50 46LCC 50 46LC1 75 59LC2 100 73LC21 100 73LC3 150 101LC4 175 115LC9 320 196CA6N
6、M 100 73NOTE 1This specification covers the low-temperature requirements particularly pertinent for ferritic and martensitic steels. Certain of the grades ofaustenitic steel castings furnished in accordance with Specification A351/A351M have been found suitable for low-temperature service down to 30
7、0F184C300 F 184 C and others down to 425F 254C.425 F 254 C. These grades may be used when impact tested in accordance withSpecification A352/A352M with energy levels and temperatures of test mutually agreed upon between the purchaser and the manufacturer. As a guideto the selection of energy levels
8、and testing temperatures, Appendix X1 should be consulted.1.3 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; therefore, each system mus
9、t be usedindependently of the other. Combining values from the two systems may result in nonconformance with the specification.Inch-pound units are applicable for material ordered to Specification A352 and SI units for material ordered to SpecificationA352M.1.4 This international standard was develo
10、ped in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Document
11、s2.1 ASTM Standards:3A351/A351M Specification for Castings, Austenitic, for Pressure-Containing Parts1 This specification is under the jurisdiction ofASTM Committee A01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee A01.18on Castings.Current edition appr
12、oved March 1, 2012Nov. 1, 2017. Published April 2012November 2017. Originally approved in 1952. Last previous edition approved in 20062012as A352/A352M - 06.A352/A352M 06 (2012). DOI: 10.1520/A0352_A0352M-06R12.10.1520/A0352_A0352M-17.2 For ASME Boiler and Pressure Vessel Code applications, see rela
13、ted Specification SA-352, 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 doc
14、ument 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
15、 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 standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. Unite
16、d States1A370 Test Methods and Definitions for Mechanical Testing of Steel ProductsA488/A488M Practice for Steel Castings, Welding, Qualifications of Procedures and PersonnelA703/A703M Specification for Steel Castings, General Requirements, for Pressure-Containing PartsE165 Practice for Liquid Penet
17、rant Examination for General IndustryE709 Guide for Magnetic Particle Testing2.2 ManufacturersManufacturers Standardization Society of the Valve and Fittings Industry Standard:4SP-55 Quality Standard for Steel Castings for Valves, Flanges, and Fittings and Other Piping Components (Visual Method)3. G
18、eneral Conditions for Delivery3.1 Material furnished to this specification shall conform to the requirements of Specification A703/A703M, including anysupplementary requirements that are indicated in the purchase order. Failure to comply with the general requirements ofSpecification A703/A703M const
19、itutes nonconformance with this specification. In case of conflict between the requirements of thisspecification and Specification A703/A703M, this specification shall prevail.4. Ordering Information4.1 The inquiry and order should include or indicate the following:4.1.1 A description of the casting
20、 by pattern number or drawing (dimensional tolerances shall be included on the castingdrawing),4.1.2 Grade of steel,4.1.3 Options in the specification, and4.1.4 The supplementary requirements desired, including the standards of acceptance.5. Heat Treatment5.1 All castings shall receive a heat treatm
21、ent proper to their design and chemical composition. It should be recognized thatliquid quenching of the ferritic grades is normally required to meet the mechanical properties of heavier sections and will greatlyenhance the low-temperature properties of thinner sections.5.2 Ferritic castings shall b
22、e furnished in the normalized and tempered or liquid-quenched liquid quenched and temperedcondition, except for Grade LC9, which shall be liquid-quenched liquid quenched and tempered. Castings shall be tempered at aminimum of 1100F 590C,1100 F 590 C, except Grade LC4, which shall be 1050F 565C,1050
23、F 565 C, and GradeLC9, which shall be tempered in the range of 1050 to 1175F1175 F 565 to 635C,635 C, followed by cooling in air or liquid.5.3 CA6NM castings shall be heat-treated heat treated by heating to 1850F 1010C1850 F 1010 C minimum, and aircooling to 200F 95C200 F 95 C maximum before any opt
24、ional intermediate temper, but shall cool to 100F 40C100 F40 C maximum before the final temper, which shall be between 1050 and 1150F1150 F 565 and 620C.620 C.5.4 Castings shall be allowed to cool below the transformation range directly after pouring and solidification before they arereheated for no
25、rmalizing or liquid quenching.5.5 Temperature ControlFurnace temperature for heat treating shall be controlled by use of pyrometers.6. Chemical Composition6.1 The steel shall conform to the requirements as to chemical composition for the grade ordered as specified in Table 1.7. Mechanical Requiremen
26、ts7.1 Tension Test:7.1.1 Tensile properties of steel used for the castings shall conform to the requirements specified in Table 1.7.2 Impact Test:7.2.1 The notched bar impact properties of the material shall be determined by testing a set of three Charpy V-notch impactspecimens for each heat at one
27、of the standard test temperatures shown in Table 1, depending on the intended service temperature(see Appendix X1). The average energy value of the three specimens shall not be less than specified, with not more than one valuepermitted below the average minimum specified and no value permitted below
28、 the minimum specified for a single specimen.7.2.2 The notched bar impact test shall be made in accordance with Test Methods and Definitions A370.7.2.3 Impact test specimens shall be machined to the form and dimensions shown in Test Methods and Definitions A370, Fig.11.8. Quality8.1 The surface of t
29、he casting shall be examined visually and shall be free of adhering sand, scale, cracks, and hot tears. Othersurface discontinuities shall meet the visual acceptance standards specified in the order. Visual Method SP-55 or other visual4 Available from Manufacturers Standardization Society of the Val
30、ve and Fittings Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602.A352/A352M 172standards may be used to define acceptable surface discontinuities and finish. Unacceptable visual surface discontinuities shall beremoved and their removal verified by visual examination of the resultant cavities.
31、 When methods involving high temperature areused in the removal of discontinuities, castings shall be preheated to at least the minimum temperatures in Table 2.8.2 When additional inspection is desired, Supplementary Requirements S4, S5, and S10,S10 may be ordered.TABLE 1 Chemical, Tensile, and Impa
32、ct RequirementsType CarbonSteel CarbonSteelCarbon-ManganeseSteelCarbon-MolybdenumSteel212 %NickelSteelNickel-Chromium-MolybdenumSteel312 %NickelSteel412 %NickelSteel9 %NickelSteel1212 %Chromium,Nickel-MolybdenumSteelGrade LCA LCBA LCC LC1 LC2 LC2-1 LC3 LC4 LC9 CA6NMUNS Number J02504 J03003 J02505 J1
33、2522 J22500 J42215 J31550 J41500 J31300 J91540Element, % (max, except where range is given)Carbon 0.25A 0.30 0.25A 0.25 0.25 0.22 0.15 0.15 0.13 0.06Silicon 0.60 0.60 0.60 0.60 0.60 0.50 0.60 0.60 0.45 1.00Manganese 0.70A 1.00 1.20A 0.50-0.80 0.50-0.80 0.55-0.75 0.50-0.80 0.50-0.80 0.90 1.00Phosphor
34、us 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04Sulfur 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.045 0.03Nickel 0.50B 0.50B 0.50B . . . 2.00-3.00 2.50-3.50 3.00-4.00 4.00-5.00 8.50-10.0 3.5-4.5Chromium 0.50B 0.50B 0.50B . . . . . . 1.35-1.85 . . . . . . 0.50 11.5-14.0Molybdenum 0.20 0.20
35、B 0.20B 0.45-0.65 . . . 0.30-0.60 . . . . . . 0.20 0. 4-1.0Copper 0.30 0.30B 0.30B . . . . . . . . . . . . . . . 0.30 . . .Vanadium 0.03B 0.03B 0.03B . . . . . . . . . . . . . . . 0.03 . . .TensileRequirements:CTensile strength,ksi MPa60.0-85.0415-58565.0-90.0450-62070.0-95.0485-65565.0-90.0450-6207
36、0.0-95.0485-655105.0-130.0725-89570.0-95.0485-65570.0-95.0485-65585.0585110.0-135.0760-930Yield strength,Dmin, ksi MPa30.0 205 35.0 240 40.0 275 35.0 240 40.0 275 80.0 550 40.0 275 40.0 275 75.0 515 80.0 550Elongation in 2 in.or 50 mm,min, %E24 24 22 24 24 18 24 24 20 15Reduction of area,min, %35 35
37、 35 35 35 30 35 35 30 35Impact RequirementsCharpy V-NotchC,FEnergy value, ftlbfJ, min value fortwo specimensand min avg ofthreespecimens13 18 13 18 15 20 13 18 15 20 30 41 15 20 15 20 20 27 20 27Energy value, ftlbfJ, min for singlespecimen10 14 10 14 12 16 10 14 12 16 25 34 12 16 12 16 15 20 15 20Te
38、sting temperature,F C25 32 50 46 50 46 75 59 100 73 100 73 150101175115320196100 73A For each reduction of 0.01 % below the specified maximum carbon content, an increase of 0.04 % manganese above the specified maximum will be permitted up to amaximum of 1.10 % for LCA, 1.28 % for LCB, and 1.40 % for
39、 LCC.B Specified Residual ElementsThe total content of these elements is 1.00 % maximum.C See1.2.D Determine by either 0.2 % offset method or 0.5 % extension-under-load method.E When ICI test bars are used in tensile testing as provided for in Specification A703/A703M, the gage length to reduced sec
40、tion diameter ratio shall be 4 to 1.F See Appendix X1.TABLE 2 Minimum Preheat TemperaturesGrade Thickness, in. mm Minimum PreheatTemperature, F CLCA all 50 10LCB all 50 10LCC all 50 10LC1 over 58 15.9 250 12058 and under 50 10LC2 all 300 150LC2-1 all 300 150LC3 all 300 150LC4 all 300 150CA6NM all 50
41、 10A352/A352M 1738.3 The castings shall not be peened, plugged, or impregnated to stop leaks.9. Repair by Welding9.1 Repairs shall be made using procedures and welders in accordance with Practice A488/A488M.9.2 Welding of Grade LC9 shall be accomplished using nonmagnetic filler material ofAWS classi
42、fication ENiCrFe-2, and shallrequire liquid penetrant inspection of the weld (Supplementary Requirement S6) when magnetic particle inspection (Supplemen-tary Requirement S4) is specified for the casting.9.3 Weld repairs shall be inspected to the same quality standards that are used to inspect the ca
43、stings. When castings areproduced with Supplementary Requirement S4 specified, weld repairs shall be inspected by magnetic particle examination to thesame standards that are used to inspect the castings. When castings are produced with Supplementary Requirement S5 specified,weld repairs on castings
44、that have leaked on hydrostatic tests, or on castings in which the depth of any cavity prepared for repairwelding exceeds 20 % of the wall thickness or 1 in. 25 mm whichever is smaller, or on castings in which any cavity preparedfor welding is greater than approximately 10 in.2 65 cm2 shall be radio
45、graphed to the same standards that are used to inspect thecastings.9.4 Castings containing any repair weld that exceeds 20 % of the wall thickness, or 1 in. 25 mm, whichever is smaller, or thatexceeds approximately 10 in.2 65 cm2 in area, or that was made to correct hydrostatic test defects shall be
46、 stress relieved or heattreated after welding. This mandatory stress relief or heat treatment shall be in accordance with the procedure qualification used.When stress relief is required for Grade LC9, cooling shall be in still air.10. Product Marking10.1 All marking shall be on a raised pad using lo
47、w-stress stamps.10.2 In addition to the marking required by Specification A703/A703M, castings that have been liquid quenched and temperedshall be marked with the letters “QT”.“QT.”11. Keywords11.1 alloy steel; carbon steel; ferritic steel; low temperature applications; martensitic stainless steel;
48、pressure containing parts;stainless steel; steel castingsSUPPLEMENTARY REQUIREMENTSThe following supplementary requirements shall not apply unless specified in the purchase order.Alist of standardized supplementary requirements for use at the option of the purchaser is included inSpecification A703/A703M. Those which are ordinarily considered suitable for use with thisspecification are given below together with additional supplementary requirements that are applicableonly to this specification. Other supplementary requirements enumerated in A703/A703M may beused with this spe
