1、Designation: A389/A389M 13 (Reapproved 2018)Standard Specification forSteel Castings, Alloy, Specially Heat Treated, for Pressure-Containing Parts, Suitable for High-Temperature Service1This standard is issued under the fixed designation A389/A389M; the number immediately following the designation i
2、ndicates 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 agencies
3、 of the U.S. Department of Defense.1. Scope*1.1 This specification covers alloy steel castings that havebeen subjected to special heat treatment for valves, flanges,fittings, and other pressure-containing parts (Note 1) intendedprimarily for high-temperature service.1.2 The high-temperature properti
4、es of the materials cov-ered in this specification are dependent upon special heattreatment that is required. Although the high-temperatureproperties are not specified, they are implied by control ofchemistry, heat treatment, and room-temperature properties.1.3 Two grades of ferritic alloy steel are
5、 covered (Note 2).Selection will depend on the design and service conditions,mechanical properties, and high-temperature characteristics.NOTE 1Carbon steel castings for pressure-containing parts are cov-ered by Specification A216/A216M. Alloy steel castings are covered bySpecification A217/A217M.NOT
6、E 2The grades covered by this specification represent materialsthat are generally suitable for assembly with other castings or wroughtsteel parts by fusion welding. It is not intended to imply that these gradespossess equal degrees of weldability; therefore, it is the responsibility ofthe purchaser
7、to establish for himself a suitable welding technique. Sincethese grades possess varying degrees of suitability for resistance tooxidation and for high-temperature service, it is also the responsibility ofthe purchaser to determine which grade shall be furnished, due consider-ation being given to th
8、e requirements of the applicable construction codes.1.4 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues fro
9、m the two systems may result in nonconformancewith the standard.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendat
10、ions issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2A216/A216M Specification for Steel Castings, Carbon, Suit-able for Fusion Welding, for High-Temperature ServiceA217/A217M Specification for Steel Castings, MartensiticSta
11、inless and Alloy, for Pressure-Containing Parts, Suit-able for High-Temperature ServiceA488/A488M Practice for Steel Castings, Welding, Qualifi-cations of Procedures and PersonnelA703/A703M Specification for Steel Castings, GeneralRequirements, for Pressure-Containing PartsA985/A985M Specification f
12、or Steel Investment CastingsGeneral Requirements, for Pressure-Containing Parts2.2 Manufacturers Standardization Society of the Valve andFittings Industry Standard:3SP-55 Quality Standard for Steel Castings for Valves,Flanges, and Fittings and other Components (VisualMethod)3. General Conditions for
13、 Delivery3.1 Except for steel investment castings, material furnishedto this specification shall conform to the requirements ofSpecification A703/A703M, including any supplementary re-quirements that are indicated in the purchase order. Failure tocomply with the general requirements of Specification
14、 A703/A703M constitutes nonconformance with the specification. Incase of conflict between the requirements of this specificationand Specification A703/A703M, this specification shall pre-vail.3.2 Steel investment castings furnished to this specificationshall conform to the requirements of Specificat
15、ion A985/1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.18 on Castings.Current edition approved Sept. 1, 2018. Published September 2018. Originallyapproved in 1955. Last previous edit
16、ion approved in 2013 as A389/A389M 13.DOI: 10.1520/A0389_A0389M-13R18.2For 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
17、 website.3Available from Manufacturers Standardization Society of the Valve and FittingsIndustry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http:/www.mss-hq.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, Wes
18、t 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 the World Tr
19、ade Organization Technical Barriers to Trade (TBT) Committee.1A985M, including any supplementary requirements that areindicated in the purchase order. Failure to comply with thegeneral requirements of Specification A985/A985M consti-tutes nonconformance with this specification. In case of con-flict
20、between the requirements of this specification and Speci-fication A985/A985M, Specification A985/A985M shallprevail.4. Ordering Information4.1 The inquiry and order should include or indicate thefollowing:4.1.1 A description of the casting by pattern number ordrawing (dimensional tolerances shall be
21、 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 acceptance.5. Heat Treatment5.1 All castings shall receive a heat treatment proper to theirdesign and chemical composition. Heat treatm
22、ent shall beperformed before machining, except in instances when reheattreating is necessary. All castings shall have been allowed tocool, after pouring, to a temperature below the critical rangebefore heat treatment.5.2 At the option of the manufacturer, the castings may begiven any preliminary hea
23、t treatment that will aid in theirprocessing.5.3 All castings shall receive a final heat treatment consist-ing of normalizing and tempering at the temperature prescribedfor each grade in Table 1.5.4 Furnace temperatures for heat treating shall be effec-tively controlled by use of pyrometers.6. Chemi
24、cal Composition6.1 The steel shall conform to the requirements as tochemical composition prescribed in Table 2.7. Tensile Requirements7.1 Steel used for the castings shall conform to the require-ments as to tensile properties prescribed in Table 3.8. Quality8.1 The surface of the casting shall be ex
25、amined 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 surfacediscontinuities and finish. Unacceptabl
26、e 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 tempera-tures in Table 4.8.2 The castin
27、gs shall not be peened, plugged, or impreg-nated to stop leaks.9. Repair by Welding9.1 Repair shall be made by using a welding procedure andoperators qualified in accordance with Practice A488/A488M.The composition of the deposit weld material shall be similarto that of the casting, or of other comp
28、osition as may be agreedupon between the manufacturer and the purchaser. The castingsafter complement of weld repairing shall be retempered exceptthat local tempering of the weld repairs will be permitted if, inthe manufacturers opinion, complete furnace heat treatmentwould be damaging to the finish
29、ed surfaces of a machinedcasting. Heat treatments after weld repair other than temperingshall be performed only when agreed upon between themanufacturer and the purchaser.9.2 Weld repairs shall be considered major in the case of acasting that had leaked on hydrostatic test, or when the depthof cavit
30、y prepared for welding exceeds 20 % of the actual wallthickness or 1 in. 25.4 mm, whichever is smaller, or when theextent of the cavity exceeds approximately 10 in.264.5 cm2.When requested by the purchasers inspector, such weld repairsshall be subject to his approval. He shall also have the right to
31、TABLE 1 Heat Treating TemperaturesGradeNormalizingTemperature,F CTemperingTemperature,F CHoldingTime, hC23 18501950 12501350 1A10101065 675730C24 18501950 12501350 1210101065 675730APer inch or less of thickness.TABLE 2 Chemical RequirementsGrade (UNS No.)Composition, %C23 (J12080) C24 (J12092)Carbo
32、n, max 0.20 0.20Manganese 0.300.80 0.300.80Phosphorus, max 0.035 0.035Sulfur, max 0.035 0.035Silicon, max 0.60 0.60Chromium 1.001.50 0.801.25Molybdenum 0.450.65 0.901.20Vanadium 0.150.25 0.150.25TABLE 3 Tensile RequirementsGrade C23 C24Tensile strength, min, ksi MPa 70 483 80 552Yield strength,Amin,
33、 ksi MPa 40 276 50 345Elongation in 2 in. 50 mm, min, %B18.0 15.0Reduction of area, min, % 35.0 35.0ADetermine by either 0.2 % offset or 0.5 % extension-under-load method.BWhen ICI test bars are used in tensile testing as provided for in SpecificationA703/A703M, the gage length to reduced section di
34、ameter ratio shall be 4 to 1.TABLE 4 Minimum Preheat TemperatureGrade Minimum Preheat Temperature, F CC23 300 150C24 300 150A389/A389M 13 (2018)2require complete reheat treatment of the repaired casting inaccordance with 5.3. When mutually agreed upon between thepurchaser and the manufacturer, major
35、 repair weld may beexamined at the manufacturers expense by magnetic particleexamination or radiographing, or both, to check the adequacyof the repair.10. Keywords10.1 alloy steel; high-temperature applications; pressure-containing parts; steel castingsSUPPLEMENTARY REQUIREMENTSThe following supplem
36、entary 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 for sand castings, or in Specification A985/A985M for investmentcastings. Those which are ordinar
37、ily considered suitable for use with this specification are givenbelow. Others enumerated in Specification A703/A703M or in Specification A985/A985M may beused with this specification upon agreement between the manufacturer and purchaser.S1. Unspecified ElementsS2. Destruction TestsS3. Bend TestsS4.
38、 Magnetic Particle InspectionS5. Radiographic InspectionS10. Examination of Weld PreparationSUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue(A389/A389M 10) that may impact the use of this standard. (Approved Oct. 1, 2013.)(1) The p
39、aragraph under Supplementary Requirements wasrevised to reference Specification A985/A985M. The title ofS1 changed to match Specifications A703/A703M and A985/A985M.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this
40、 standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be
41、reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of therespo
42、nsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, Wes
43、t 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). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 13 (2018)3
