1、Designation: A 352/A 352M 06Standard Specification forSteel Castings, Ferritic and Martensitic, for Pressure-Containing Parts, Suitable for Low-Temperature Service1This standard is issued under the fixed designationA352/A352M; the number immediately following the designation indicates the yearof ori
2、ginal 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.This standard has been approved for use by agencies of the Department of
3、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 desig
4、n and service conditions (Note). The temperatureshown is the lowest temperature at which the material ordi-narily is required to meet the impact requirements of thisspecification (see Supplementary Requirement S22, ImpactTest Temperatures). Users should note that hardenability ofsome of the grades m
5、entioned 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 low-
6、temperature requirementsparticularly pertinent for ferritic and martensitic steels. Certain of thegrades of austenitic steel castings furnished in accordance with Specifi-cation A 351/A 351M have been found suitable for low-temperatureservice down to 300F 184C and others down to 425F 254C.These grad
7、es may be used when impact tested in accordance withSpecification A 352/A 352M with energy levels and temperatures of testmutually agreed upon between the purchaser and the manufacturer. As aguide to the selection of energy levels and testing temperatures,AppendixX1 should be consulted.1.3 The value
8、s 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
9、 may result in nonconformance with the specifi-cation. Inch-pound units are applicable for material ordered toSpecification A 352 and SI units for material ordered toSpecification A 352M.2. Referenced Documents2.1 ASTM Standards:3A 351/A 351M Specification for Castings, Austenitic, forPressure-Conta
10、ining PartsA 370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA 488/A 488M Practice for Steel Castings, Welding, Quali-fications of Procedures and PersonnelA 703/A 703M Specification for Steel Castings, GeneralRequirements, for Pressure-Containing PartsE 165 Test Method for Li
11、quid Penetrant ExaminationE 709 Guide for Magnetic Particle Examination2.2 Manufacturers Standardization Society of the Valveand Fittings Industry Standard:SP-55 Quality Standard for Steel Castings for Valves,Flanges, and Fittings and Other Piping Components (Vi-sual Method)43. General Conditions fo
12、r Delivery3.1 Material furnished to this specification shall conform tothe requirements of SpecificationA 703/A 703M including anysupplementary requirements that are indicated in the purchaseorder. Failure to comply with the general requirements ofSpecification A 703/A 703M constitutes nonconformanc
13、e withthis specification. In case of conflict between the requirementsof this specification and Specification A 703/A 703M, thisspecification shall prevail.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel, and Related Alloys and is the direct responsibilit
14、y of SubcommitteeA01.18 on Castings.Current edition approved March 1, 2006. Published March 2006. Originallyapproved in 1952. Last previous edition approved in 2003 as A 352/A 352M - 03.2For ASME Boiler and Pressure Vessel Code applications, see related Specifi-cation SA-352, in Section II of that C
15、ode.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 Document Summary page onthe ASTM website.4Available from Manufacturers Standardization Society of
16、theValve and FittingsIndustry (MSS), 127 Park St., NE, Vienna, VA 22180-4602.1*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 States.4. Ordering Information4.1 The inquiry and
17、 order should 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 standa
18、rds of acceptance.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
19、 low-temperature 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 1100F 590C,except Grade LC4, wh
20、ich shall be 1050F 565C, and GradeLC9, which shall be tempered in the range of 1050 to 1175F565 to 635C, followed by cooling in air or liquid.5.3 CA6NM castings shall be heat-treated by heating to1850F 1010C minimum, and air cooling to 200F 95Cmaximum before any optional intermediate temper, but sha
21、llcool to 100F 40C maximum before the final temper, whichshall be between 1050 and 1150F 565 and 620C.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 ControlFur
22、nace 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 used f
23、or 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, depending
24、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.7.2.2 The notched
25、bar impact test shall be made in accor-dance with Test Methods and Definitions A 370.7.2.3 Impact test specimens shall be machined to the formand dimensions shown in Test Methods and Definitions A 370,Fig. 11.8. Quality8.1 The surface of the casting shall be examined visuallyand shall be free of adh
26、ering 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 surfacediscontinuities and finish. Unacceptable visual surface discon-tinuities shall
27、 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 tempera-tures in Table 2.8.2 When additional inspection is desired, Supplementa
28、ryRequirements 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 Practice A 488/A 488M.9.2 Welding of Grade LC9 shall be accomplished usingnonmagnet
29、ic 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 thecasting.9.3 Weld repairs shall be inspected to the same qualitystandards th
30、at 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 castings.When castings are produced with Supplementary RequirementS5 specifi
31、ed, 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 castingsin which any cavity prepared for welding is greater thanapproximately 10
32、in.265 cm2shall be radiographed to the samestandards 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 approximately 10 in.265 cm2 in area, or thatwas made to correct hydrostatic
33、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, cooling shall be in still air.10. Product Marking10.1 All marking shall be on a
34、raised pad using low-stressstamps.10.2 In addition to the marking required by SpecificationA 703/A 703M, castings that have been liquid quenched andtempered shall be marked with the letters “QT”.A 352/A 352M 06211. Keywords11.1 alloy steel; carbon steel; ferritic steel; low temperatureapplications;
35、martensitic stainless steel; pressure containingparts; stainless steel; steel castingsTABLE 1 Chemical, Tensile, and Impact RequirementsType CarbonSteelCarbonSteelCarbon-ManganeseSteelCarbon-MolybdenumSteel212 %NickelSteelNickel-Chromium-MolybdenumSteel312 %NickelSteel412 %NickelSteel9%NickelSteel12
36、12 %Chromium,Nickel-MolybdenumSteelGrade LCA LCBALCC LC1 LC2 LC2-1 LC3 LC4 LC9 CA6NMUNS Number J02504 J03003 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.
37、50 0.60 0.60 0.45 1.00Manganese 0.70A1.00 1.20A0.50-0.80 0.50-0.80 0.55-0.75 0.50-0.80 0.50-0.80 0.90 1.00Phosphorus 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. . . 2.00-3.00 2.50-3.50 3.00-4.00 4.00-5.00 8
38、.50-10.0 3.5-4.5Chromium 0.50B0.50B0.50B. . . . . . 1.35-1.85 . . . . . . 0.50 11.5-14.0Molybdenum 0.20 0.20B0.20B0.45-0.65 . . . 0.30-0.60 . . . . . . 0.20 0. 4-1.0Copper 0.30 0.30B0.30B. . . . . 0.30 .Vanadium 0.03B0.03B0.03B. . . . . 0.03 .TensileRequirements:CTensile strength,ksi MPa60.0-85.0415
39、-58565.0-90.0450-62070.0-95.0485-65565.0-90.0450-62070.0-95.0485-655105.0-130.0725-89570.0-95.0485-65570.0-95.0485-65585.0585110.0-135.0760-930Yield 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
40、 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 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
41、 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 73AFor 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 toa maxim
42、um 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.CSee1.2.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 Specific
43、ation A 703/A 703M, the gage length to reduced section diameter ratio shall be 4 to 1.FSee Appendix X1.TABLE 2 Minimum Preheat TemperaturesGrade Thickness, in. mm Minimum 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 3
44、00 150LC3 all 300 150LC4 all 300 150CA6NM all 50 10A 352/A 352M 063SUPPLEMENTARY 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 inSpecifica
45、tion A 703/A 703M. 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 A 703/A 703M may beused with this specifi
46、cation upon agreement between the manufacturer and purchaser.S1. Unspecified ElementsS2. Destruction TestsS4. Magnetic Particle InspectionS5. Radiographic InspectionS9. Drop Weight TestsS10. Examination of Weld PreparationS10.1 The method of performing the magnetic particle orliquid penetrant test s
47、hall be in accordance with Practice E 709or Practice E 165.S21. Heat TreatmentS21.1 Castings shall be liquid quenched and tempered.S22. Impact Test TemperaturesS22.1 When an impact test temperature other than that listedin Table 1 is used, the lowest test temperature at which thematerial met the imp
48、act test requirements shall be stampedwith low-stress stamps on a raised pad located immediatelyahead of the material symbol; for example, 25 LCB for +25F4C and 025 LCB for 25F 32C.S22.2 Lateral expansion of V-notch specimens shall bemeasured in accordance with 23.2.3.1 of Test Methods andDefinition
49、s A 370, and reported for information.S23. Carbon EquivalentS23.1 When specified on the order the maximum carbonequivalent shall be:Grade Carbon Equivalent, maxLCA 0.50LCB 0.50LCC 0.55S23.2 Determine carbon equivalent, CE, as follows:CE 5 C 1Mn61Cr 1 Mo 1 V51Ni 1 Cu15APPENDIX(Nonmandatory Information)X1. EXPLANATI
