1、Designation: A352/A352M 18Standard 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 designation indicates the yearof orig
2、inal 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 agencies of the U.S. Department
3、of Defense.1. Scope*1.1 This specification2covers steel castings for valves,flanges, fittings, and other pressure-containing parts intendedprimarily for low-temperature service.1.2 Several grades of ferritic steels and one grade ofmartensitic steel are covered. Selection of analysis will dependon de
4、sign and service conditions (Note 1). The temperatureshown is the lowest temperature at which the material ordinar-ily is required to meet the impact requirements of thisspecification (see Supplementary Requirement S51, ImpactTest Temperatures). Users should note that hardenability ofsome of the gra
5、des mentioned may restrict the maximum sizeat which the required mechanical properties are obtainable (seeAppendix X1).Grade Usual Minimum TestingTemperatures, F CLCA 25 32LCB 50 46LCC 50 46LC1 75 59LC2 100 73LC21 100 73LC3 150 101LC4 175 115LC9 320 196CA6NM 100 73NOTE 1This specification covers the
6、 low-temperature requirementsparticularly pertinent for ferritic and martensitic steels. Certain grades ofaustenitic steel castings furnished in accordance with Specification A351/A351M have been found suitable for low-temperature service down to300 F 184 C and others down to 425 F 254 C. These grad
7、esmay be used when impact tested in accordance with SpecificationA352/A352M with energy levels and temperatures of test mutually agreedupon between the purchaser and the manufacturer. As a guide to theselection of energy levels and testing temperatures, Appendix X1 shouldbe consulted.1.3 The values
8、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. Combining values from thetwo systems m
9、ay result in nonconformance with the specifi-cation. Inch-pound units are applicable for material ordered toSpecification A352 and SI units for material ordered toSpecification A352M.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-i
10、zation established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:3A351/A351M Specification for Castings, Austenitic,
11、forPressure-Containing PartsA488/A488M Practice for Steel Castings, Welding, Qualifi-cations of Procedures and PersonnelA703/A703M Specification for Steel Castings, GeneralRequirements, for Pressure-Containing PartsE165/E165M Practice for Liquid Penetrant Examination forGeneral IndustryE709 Guide fo
12、r Magnetic Particle Testing2.2 Manufacturers Standardization Society of the Valve andFittings Industry Standard:4SP-55 Quality Standard for Steel Castings for Valves,Flanges, and Fittings and Other Piping Components (Vi-sual Method)1This specification is under the jurisdiction of ASTM Committee A01
13、on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.18 on Castings.Current edition approved June 15, 2018. Published June 2018. Originallyapproved in 1952. Last previous edition approved in 2017 as A352/A352M 17.DOI: 10.1520/A0352_A0352M-18.2For ASME Boile
14、r and Pressure Vessel Code applications, see related Specifi-cation SA-352, in Section II of that Code.3For 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 to the standards
15、 Document Summary page onthe ASTM website.4Available from Manufacturers Standardization Society of the Valve and FittingsIndustry (MSS), 127 Park St., NE, Vienna, VA 22180-4602.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Bo
16、x C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by t
17、he World Trade Organization Technical Barriers to Trade (TBT) Committee.13. General Conditions for Delivery3.1 Material furnished to this specification shall conform tothe requirements of Specification A703/A703M, including anysupplementary requirements that are indicated in the purchaseorder. Failu
18、re to comply with the general requirements ofSpecification A703/A703M constitutes nonconformance withthis specification. In case of conflict between the requirementsof this specification and Specification A703/A703M, thisspecification shall prevail.4. Ordering Information4.1 The inquiry and order sh
19、ould include or indicate thefollowing:4.1.1 A description of the casting by pattern number ordrawing (dimensional tolerances shall be included on thecasting drawing),4.1.2 Grade of steel,4.1.3 Options in the specification, and4.1.4 The supplementary requirements desired, includingthe standards of ac
20、ceptance.5. Heat Treatment5.1 All castings shall receive a heat treatment proper to theirdesign and chemical composition. It should be recognized thatliquid quenching of the ferritic grades is normally required tomeet the mechanical properties of heavier sections and willgreatly enhance the low-temp
21、erature properties of thinnersections.5.2 Ferritic castings shall be furnished in the normalized andtempered or liquid quenched and tempered condition, exceptfor Grade LC9, which shall be liquid quenched and tempered.Castings shall be tempered at a minimum of 1100 F 590 C,except Grade LC4, which sha
22、ll be 1050 F 565 C, and GradeLC9, which shall be tempered in the range of 1050 to 1175 F565 to 635 C, followed by cooling in air or liquid.5.3 CA6NM castings shall be heat treated by heating to1850 F 1010 C minimum, and air cooling to 200 F 95 Cmaximum before any optional intermediate temper, but sh
23、allcool to 100 F 40 C maximum before the final temper,which shall be between 1050 and 1150 F 565 and 620 C.5.4 Castings shall be allowed to cool below the transforma-tion range directly after pouring and solidification before theyare reheated for normalizing or liquid quenching.5.5 Temperature Contr
24、olFurnace temperature for heattreating shall be controlled by use of pyrometers.6. Chemical Composition6.1 The steel shall conform to the requirements as tochemical composition for the grade ordered as specified inTable 1.7. Mechanical Requirements7.1 Tension Test:7.1.1 Tensile properties of steel u
25、sed for the castings shallconform to the requirements specified in Table 1.7.2 Impact Test:7.2.1 The notched bar impact properties of the material shallbe determined by testing a set of three Charpy V-notch impactspecimens for each heat at one of the standard test temperaturesshown in Table 1, depen
26、ding on the intended service tempera-ture (see Appendix X1). The average energy value of the threespecimens shall not be less than specified, with not more thanone value permitted below the average minimum specified andno value permitted below the minimum specified for a singlespecimen.8. Quality8.1
27、 The surface of the casting shall be examined visuallyand shall be free of adhering sand, scale, cracks, and hot tears.Other surface discontinuities shall meet the visual acceptancestandards specified in the order. Visual Method SP-55 or othervisual standards may be used to define acceptable surface
28、discontinuities and finish. Unacceptable visual surface discon-tinuities shall be removed and their removal verified by visualexamination of the resultant cavities. When methods involvinghigh temperature are used in the removal of discontinuities,castings shall be preheated to at least the minimum t
29、empera-tures in Table 2.8.2 When additional inspection is desired, SupplementaryRequirements S4, S5, and S10 may be ordered.8.3 The castings shall not be peened, plugged, or impreg-nated to stop leaks.9. Repair by Welding9.1 Repairs shall be made using procedures and welders inaccordance with Practi
30、ce A488/A488M.9.2 Welding of Grade LC9 shall be accomplished usingnonmagnetic filler material of AWS classification ENiCrFe-2,and shall require liquid penetrant inspection of the weld(Supplementary Requirement S6) when magnetic particle in-spection (Supplementary Requirement S4) is specified for the
31、casting.9.3 Weld repairs shall be inspected to the same qualitystandards that are used to inspect the castings. When castingsare produced with Supplementary Requirement S4 specified,weld repairs shall be inspected by magnetic particle examina-tion to the same standards that are used to inspect the c
32、astings.When castings are produced with Supplementary RequirementS5 specified, weld repairs on castings that have leaked onhydrostatic tests, or on castings in which the depth of anycavity prepared for repair welding exceeds 20 % of the wallthickness or 1 in. 25 mm, whichever is smaller, or on casti
33、ngsin which any cavity prepared for welding is greater thanapproximately 10 in.265 cm2 shall be radiographed to thesame standards that are used to inspect the castings.9.4 Castings containing any repair weld that exceeds 20 %of the wall thickness, or 1 in. 25 mm, whichever is smaller,or that exceeds
34、 approximately 10 in.265 cm2 in area, or thatwas made to correct hydrostatic test defects shall be stressrelieved or heat treated after welding. This mandatory stressrelief or heat treatment shall be in accordance with theprocedure qualification used. When stress relief is required forGrade LC9, coo
35、ling shall be in still air.A352/A352M 18210. Product Marking10.1 All marking shall be on a raised pad using low-stressstamps.10.2 In addition to the marking required by SpecificationA703/A703M, castings that have been liquid quenched andtempered shall be marked with the letters “QT.”TABLE 1 Chemical
36、, Tensile, and Impact RequirementsTypeCarbonSteelCarbonSteelCarbon-ManganeseSteelCarbon-MolybdenumSteel212 %NickelSteelNickel-Chromium-MolybdenumSteel312 %NickelSteel412 %NickelSteel9%NickelSteel1212 %Chromium,Nickel-MolybdenumSteelGrade LCA LCBALCC LC1 LC2 LC2-1 LC3 LC4 LC9 CA6NMUNS Number J02504 J
37、03003 J02505 J12522 J22500 J42215 J31550 J41500 J31300 J91540Element, % (max, except where range is given)Carbon 0.25A0.30 0.25A0.25 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 0.70A1.00 1.20A0.500.80 0.500.80 0.550.75 0.500.80 0.500.80 0.90 1.00Ph
38、osphorus 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 0.50B0.50B0.50B. . . 2.003.00 2.503.50 3.004.00 4.005.00 8.5010.0 3.54.5Chromium 0.50B0.50B0.50B. . . . . . 1.351.85 . . . . . . 0.50 11.514.0Molybdenum 0.20 0.20B0.20B0.
39、450.65 . . . 0.300.60 . . . . . . 0.20 0.41.0Copper 0.30 0.30B0.30B. . . . . 0.30 .Vanadium 0.03B0.03B0.03B. . . . . 0.03 .TensileRequirements:CTensile strength,ksi MPa60.085.041558565.090.045062070.095.048565565.090.045062070.095.0485655105.0130.072589570.095.048565570.095.048565585.0585110.0135.07
40、60930Yield 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 35 35 35 30 35 35 30 35Impact RequirementsCharpy V-NotchC,FEnergy value, ftlbfJ, min
41、 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 20Testing temperature,F C25 32 50 46 50 46 75 59 100 73 100 73 150101175115320196100 73AF
42、or 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 toamaximum of 1.10 % for LCA, 1.28 % for LCB, and 1.40 % for LCC.BSpecified Residual ElementsThe total content of these elements is 1.00 % maximum.
43、CSee 1.2.DDetermine by either 0.2 % offset method or 0.5 % extension-under-load method.EWhen ICI test bars are used in tensile testing as provided for in Specification A703/A703M, the gage length to reduced section diameter ratio shall be 4 to 1.FSee Appendix X1.TABLE 2 Minimum Preheat TemperaturesG
44、rade Thickness, in. mmMinimum PreheatTemperature, F CLCA all 50 10LCB all 50 10LCC all 50 10LC1 over58 15.9 250 12058 and under 50 10LC2 all 300 150LC2-1 all 300 150LC3 all 300 150LC4 all 300 150CA6NM all 50 10A352/A352M 18311. Keywords11.1 alloy steel; carbon steel; ferritic steel; low temperaturea
45、pplications; martensitic stainless steel; pressure-containingparts; 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 p
46、urchaser 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
47、may beused with this specification upon agreement between the manufacturer and purchaser.S1. Unspecified ElementsS10.1 The method of performing the magnetic particle orliquid penetrant test shall be in accordance with Guide E709 orPractice E165/E165M.S2. Destruction TestsS4. Magnetic Particle Inspec
48、tionS5. Radiographic InspectionS9. Drop Weight TestsS10. Examination of Weld PreparationS50. Heat TreatmentS50.1 Castings shall be liquid quenched and tempered.S51. Impact Test TemperaturesS51.1 When an impact test temperature other than that listedin Table 1 is used, the lowest test temperature at which thematerial met the impact test requirements shall be stampedwith low-stress stamps on a raised pad located immediatelyahead of the material symbol; for example, 25 LCB for +25 F4 C and 025 LCB for 25 F 32 C.S51.2 Lateral expansion of V-notch specimens shall bereported fo
