1、Designation: A389/A389M 10A389/A389M 13Standard 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 indica
2、tes 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 of t
3、he Department of Defense.1. Scope*1.1 This specification covers alloy steel castings, which have been subjected to special heat treatment, for valves, flanges,fittings, and other pressure-containing parts (Note 1) intended primarily for high-temperature service.1.2 The high-temperature properties of
4、 the materials covered in this specification are dependent upon special heat treatment thatis required. Although the high-temperature properties are not specified, they are implied by control of chemistry, heat treatment,and room-temperature properties.1.3 Two grades of ferritic alloy steel are cove
5、red (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 covered by Specification A216/A216M. Alloy steel castings are covered bySpecification A217/A217M.NOTE 2Th
6、e grades covered by this specification represent materials that are generally suitable for assembly with other castings or wrought steel partsby fusion welding. It is not intended to imply that these grades possess equal degrees of weldability; therefore, it is the responsibility of the purchaserto
7、establish for himself a suitable welding technique. Since these grades possess varying degrees of suitability for resistance to oxidation and forhigh-temperature service, it is also the responsibility of the purchaser to determine which grade shall be furnished, due consideration being given to ther
8、equirements of the applicable construction codes.1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in eachsystem may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values fro
9、m thetwo systems may result in non-conformance with the standard.2. Referenced Documents2.1 ASTM Standards:2A216/A216M Specification for Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature ServiceA217/A217M Specification for Steel Castings, Martensitic Stainless and Alloy, for
10、Pressure-Containing Parts, Suitable forHigh-Temperature ServiceA488/A488M Practice for Steel Castings, Welding, Qualifications of Procedures and PersonnelA703/A703M Specification for Steel Castings, General Requirements, for Pressure-Containing PartsA985/A985M Specification for Steel Investment Cast
11、ings General Requirements, for Pressure-Containing Parts2.2 Manufacturers Standardization Society of the Valve and Fittings Industry Standard:SP-55 Quality Standard for Steel Castings for Valves, Flanges, and Fittings and other Components (Visual Method)33. General Conditions for Delivery3.1 Except
12、for steel investment castings, material furnished to this specification shall conform to the requirements ofSpecification A703/A703M, including any supplementary requirements that are indicated in the purchase order. Failure to comply1 This specification is under the jurisdiction ofASTM Committee A0
13、1 on Steel, Stainless Steel and RelatedAlloysand is the direct responsibility of Subcommittee A01.18on Castings.Current edition approved July 1, 2010Oct. 1, 2013. Published August 2010October 2013. Originally approved in 1955. Last previous edition approved in 20082010 asA389/A389M 08.A389/A389M 10.
14、 DOI: 10.1520/A0389_A0389M-10.10.1520/A0389_A0389M-13.2 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.3 Avail
15、able from Manufacturers Standardization Society of the Valve and Fittings Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http:/www.mss-.http:/www.mss-hq.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have
16、 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 appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official docu
17、ment.*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 States1with the general requirements of A703/A703M constitutes nonconformance with the specification. In case of conflict b
18、etween therequirements of this specification and A703/A703M, this specification shall prevail.3.2 Steel investment castings furnished to this specification shall conform to the requirements of Specification A985/A985M,including any supplementary requirements that are indicated in the purchase order.
19、 Failure to comply with the general requirementsof Specification A985/A985M constitutes nonconformance with this specification. In case of conflict between the requirements ofthis specification and Specification A985/A985M, Specification A985/A985M shall prevail.4. Ordering Information4.1 The inquir
20、y and order should include or indicate the following:4.1.1 A description of the casting 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
21、 standards of acceptance.5. Heat Treatment5.1 All castings shall receive a heat treatment proper to their design and chemical composition. Heat treatment shall beperformed before machining except in instances when reheat treating is necessary. All castings shall have been allowed to cool,after pouri
22、ng, to a temperature below the critical range before heat treatment.5.2 At the option of the manufacturer the castings may be given any preliminary heat treatment that will aid in their processing.5.3 All castings shall receive a final heat treatment consisting of normalizing and tempering at the te
23、mperature prescribed foreach grade in Table 1.5.4 Furnace temperatures for heat treating shall be effectively controlled by use of pyrometers.6. Chemical Composition6.1 The steel shall conform to the requirements as to chemical composition prescribed in Table 2.7. Tensile Requirements7.1 Steel used
24、for the castings shall conform to the requirements as to tensile properties prescribed in Table 3.8. Quality8.1 The surface of the casting shall be examined visually and shall be free of adhering sand, scale, cracks, and hot tears. Othersurface discontinuities shall meet the visual acceptance standa
25、rds specified in the order. Visual Method SP-55 or other visualstandards 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. When methods involving
26、 high temperature areused in the removal of discontinuities, castings shall be preheated to at least the minimum temperatures in Table 4.8.2 The castings shall not be peened, plugged, or impregnated to stop leaks.9. Repair by Welding9.1 Repair shall be made by using a welding procedure and operators
27、 qualified in accordance with Practice A488/A488M. Thecomposition of the deposit weld material shall be similar to that of the casting, or of other composition as may be agreed uponbetween the manufacturer and the purchaser. The castings after complement of weld repairing shall be retempered except
28、that localtempering of the weld repairs will be permitted if, in the manufacturers opinion, complete furnace-heat treatment would bedamaging to the finished surfaces of a machined casting. Heat treatments after weld repair other than tempering shall be performedonly when agreed upon between the manu
29、facturer and the purchaser.TABLE 1 Heat Treating TemperaturesGrade NormalizingTemperature,FCTemperingTemperature,FCHoldingTime, hC23 18501950 12501350 1A10101065 675730C24 18501950 12501350 1210101065 675730A Per inch or less of thickness.A389/A389M 1329.2 Weld repairs shall be considered major in t
30、he case of a casting that had leaked on hydrostatic test, or when the depth ofcavity prepared for welding exceeds 20 % of the actual wall thickness or 1 in. 25.4 mm, whichever is smaller, or when the extentof the cavity exceeds approximately 10 in.2 64.5 cm2. When requested by the purchasers inspect
31、or, such weld repairs shall besubject to his approval. He shall also have the right to require complete reheat treatment of the repaired casting in accordance with5.3. When mutually agreed upon between the purchaser and the manufacturer, major repair weld may be examined at themanufacturers expense
32、by magnetic particle examination or radiographing, or both, to check the adequacy of the repair.10. Keywords10.1 steel castings; alloy steel; pressure containing parts; high temperature applicationsSUPPLEMENTARY REQUIREMENTSThe following supplementary requirements shall not apply unless specified in
33、 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 ordinarily considered suitable for use with this specification
34、 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. ResidualS1. Unspecified Elements Chemical AnalysisS2. Destruction TestsTABLE 2 Chemical RequirementsGrade (UNS No
35、.) Composition, %C23 (J12080) C24 (J12092)Carbon, 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,
36、 min, ksi MPa 70 80483 552Yield strength,A min, ksi MPa 40 50276 345Elongation in 2 in. 50 mm, min, %B 18.0 15.0Reduction of area, min, % 35.0 35.0A Determine by either 0.2 % offset or 0.5 % extension-under-load method.B When ICI test bars are used in tensile testing as provided for in Specification
37、A703/A703M, the gage length to reduced section diameter ratio shall be 4 to 1.TABLE 4 Minimum Preheat TemperatureGrade Minimum Preheat Temperature, FCC23 300 150C24 300 150A389/A389M 133S3. Bend TestsS4. Magnetic Particle InspectionS5. Radiographic InspectionS10. Examination of Weld PreparationSUMMA
38、RY OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue(A389/A389M 08A389/A389M)10) that may impact the use of this standard. (Approved Oct. 1, 2013July 1,2010.).)(1) Table 2, changed Phosphorus and Sulfur values. The paragraph under Supplemen
39、tary Requirements was revised to referenceA985/A985M. The title of S1 changed to match 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 standard. Users of this standard are expressly advi
40、sed 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 reviewed every five years andif not revised, either
41、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 theresponsible technical committee, which you may attend. If
42、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, West Conshohocken, PA 19428-2959,United States. Individu
43、al 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 ASTM website (www.astm.org/COPYRIGHT/).A389/A389M 134
