1、Designation: A217/A217M 12A217/A217M 14 Endorsed by Manufacturers Standardization Societyof the Valve and Fittings IndustryEndorsed by American Foundrymens SocietyUsed in USDOE-NE StandardsStandard Specification forSteel Castings, Martensitic Stainless and Alloy, forPressure-Containing Parts, Suitab
2、le for High-TemperatureService1This standard is issued under the fixed designation A217/A217M; the number immediately following the designation 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
3、.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 of Defense.1. Scope*1.1 This specification2 covers martensitic stainless steel and alloy steel castings for valves, flanges, fittin
4、gs, and otherpressure-containing parts (Note 1) intended primarily for high-temperature and corrosive service (Note 2).1.2 One grade of martensitic stainless steel and nine grades of ferritic alloy steel are covered. Selection will depend on designand service conditions, mechanical properties, and t
5、he high-temperature and corrosion-resistant characteristics (Note 3).NOTE 1Carbon steel castings for pressure-containing parts are covered by Specification A216/A216M. Low alloy quench-and-tempered gradesequivalent to Specification A217/A217M grades may be found in both Specifications A352/A352M and
6、 A487/A487M.NOTE 2The 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
7、 of the purchaserto establish for himself a suitable welding technique. Since these grades possess varying degrees of suitability for high-temperature and corrosion-resistantservice, it is also the responsibility of the purchaser to determine which grade shall be furnished, due consideration being g
8、iven to the requirements ofthe applicable construction codes.NOTE 3The committee formulating this specification has included nine grades of materials that are considered to represent basic types of ferritic alloysteels suitable for valves, flanges, fittings, and other pressure-containing parts. Addi
9、tional alloy steels that may better fulfill certain types of service willbe considered for inclusion in this specification by the committee as the need becomes apparent.1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in eachsy
10、stem may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from thetwo systems may result in non-conformance with the standard.2. Referenced Documents2.1 ASTM Standards:3A216/A216M Specification for Steel Castings, Carbon, Suitable for Fusion
11、 Welding, for High-Temperature ServiceA352/A352M Specification for Steel Castings, Ferritic and Martensitic, for Pressure-Containing Parts, Suitable for Low-Temperature ServiceA487/A487M Specification for Steel Castings Suitable for Pressure ServiceA488/A488M Practice for Steel Castings, Welding, Qu
12、alifications of Procedures and PersonnelA703/A703M Specification for Steel Castings, General Requirements, for Pressure-Containing PartsA802/A802M Practice for Steel Castings, Surface Acceptance Standards, Visual ExaminationA985/A985M Specification for Steel Investment Castings General Requirements,
13、 for Pressure-Containing PartsE165 Practice for Liquid Penetrant Examination for General IndustryE709 Guide for Magnetic Particle Testing1 This specification is under the jurisdiction ofASTM Committee A01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee A0
14、1.18on Castings.Current edition approved Nov. 1, 2012May 1, 2014. Published November 2012May 2014. Originally approved in 1939. Last previous edition approved in 20112012 asA217/A217M 11.A217/A217M 12. DOI: 10.1520/A0217_A0217M-12.10.1520/A0217_A0217M-14.2 For ASME Boiler and Pressure Vessel Code ap
15、plications, see related Specification SA-217/SA 217M 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 o
16、n the ASTM website.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 been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that user
17、s consult prior editions as 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 Conshoh
18、ocken, PA 19428-2959. United States12.2 AWS Specifications:4A5.5/A5.5M Low Alloy Steel Electrodes for Shielded Metal Arc WeldingA5.23/A5.23M Low-Alloy Steel Electrodes and Fluxes for Submerged Arc WeldingA5.28/A5.28M Low Alloy Steel Electrodes and Rods for Gas Shielded Arc WeldingA5.29/A5.29M Low-Al
19、loy Steel Electrodes for Flux Cored Arc Welding3. General Conditions for Delivery3.1 Except for investment castings, castings furnished to this specification shall conform to the requirements of SpecificationA703/A703M including any supplementary requirements that are indicated in the purchase order
20、. Failure to comply with thegeneral requirements of Specification A703/A703M constitutes nonconformance with this specification. In case of conflict betweenthe requirements of this specification and Specification A703/A703M, this specification shall prevail.3.2 Steel investment castings furnished to
21、 this specification shall conform to the requirements of Specification A985/A985M,including any supplementary requirements that are indicated in the purchase order. Failure to comply with the general requirementsof Specification A985/A985M constitutes nonconformance with this specification. In case
22、of conflict between the requirements ofthis specification and Specification A985/A985M, Specification A985/A985M shall prevail.4. Ordering Information4.1 The inquiry and order should include or indicate the following:4.1.1 A description of the casting by pattern number or drawing (dimensional tolera
23、nces shall be included on the castingdrawing),4.1.2 Grade of steel,4.1.3 Options in the specification,4.1.4 Whether the castings are to be produced using the investment casting process, and4.1.5 The supplementary requirements desired including the standards of acceptance.5. Heat Treatment5.1 All cas
24、tings shall receive a heat treatment proper to their design and chemical composition.5.2 Castings shall be furnished in the normalized and tempered conditions; Grades WC1, WC4, WC5, WC6, and CA15 shallbe tempered at 1100F 595C min; Grades WC9, C5, C12, and WC11 shall be tempered at 1250F 675C min; G
25、rade C12Ashall be thermally treated, either by normalizing-and-tempering or by accelerated cooling from the austenitizing temperature byair blasting or liquid quenching, followed by tempering. C12A castings shall be austenitized at 1900-1975F 1040-1080C andtempered at 1350-1470F 730-800C.5.3 Heat tr
26、eatment shall be performed after castings have been allowed to cool below the transformation range.6. Chemical Composition6.1 The steel shall be in accordance with the requirements as to chemical composition prescribed in Table 1 (Note 4).NOTE 4The role of alloying elements in the development of Gra
27、de C12A has been extensively investigated. V and Cb contribute to precipitationstrengthening by forming fine and coherent precipitation of M(C,N)X carbo-nitrides in the ferrite matrix. V also precipitates as VN during tempering orduring creep.The two elements are more effective in combination.Theref
28、ore, the addition of strong nitride-forming elements, those with a stronger affinityfor nitrogen than Cb and V, as deoxidation agents, interferes with these high-temperature strengthening mechanisms.57. Mechanical Properties7.1 Steel used for the castings shall conform to the requirements as to tens
29、ile properties given in Table 2.7.2 C12A castings shall be hardness tested in accordance with Supplementary Requirement S13, and shall have a Brinellhardness of 185-248 HBW.8. Quality8.1 The surface of the casting shall be examined visually and shall be free of adhering sand, scale, cracks, and hot
30、tears. Othersurface discontinuities shall meet the visual acceptance standards specified in the order. Practice A802/A802M or other visualstandards may be used to define acceptable surface discontinuities and finish. Unacceptable visual surface discontinuities shall beremoved and their removal verif
31、ied by visual examination of the resultant cavities. When methods involving high temperature areused in the removal of discontinuities, castings shall be preheated to at least the minimum temperatures in Table 3.4 Available from American Welding Society, 550 NW LeJuene Rd., Miami, FL 33126, http:/ww
32、w.aws.org.5 Viswanathan, R. and Bakker, W. T., Materials for Ultra Supercritical Fossil Power Plants, EPRI, Palo Alto, CA, 2000. TR-114750.A217/A217M 1428.2 Hollow castings of Grade C12A, larger than NPS 4 DN 100, and whose internal surfaces are not accessible to the visualexamination in 8.1, shall
33、be examined by the ultrasonic examination prescribed in Supplementary Requirement S7. Castingsproducing a signal equal to or greater than the lowest signal produced by the referenced discontinuities shall be identified andseparated from the acceptable castings. The area producing the signal may be r
34、e-examined. Such castings shall be rejected if thetest signals were produced by imperfections that cannot be identified or were produced by cracks or crack-like imperfections. SuchTABLE 1 Chemical RequirementsANOTE 1All values are maximum unless otherwise indicated.Composition, %CarbonMolybde-numNic
35、kelChromiumMolybde-numNickelChromiumMolybde-numChromiumMolybde-numChromiumMolybde-numChromiumMolybde-numChromiumMolybde-numChromiumMolybde-numChromiumMolybdenumVanadiumChromiumGrade Identifica-tion Symbol WC1 WC4 WC5 WC6 WC9 WC11 C5 C12 C12A CA15UNS Number J12524 J12082 J22000 J12072 J21890 J11872 J
36、42045 J82090 J84090 J91150Carbon 0.25 0.050.20 0.050.20 0.050.20 0.050.18 0.150.21 0.20 0.20 0.08-0.12 0.15Manganese 0.500.80 0.500.80 0.400.70 0.500.80 0.400.70 0.500.80 0.400.70 0.350.65 0.300.60 1.00Phosphorus 0.04 0.04 0.04 0.035 0.035 0.020 0.04 0.035 0.025 0.040Phosphorus 0.04 0.04 0.04 0.035B
37、 0.035 0.020 0.04B 0.035B 0.025 0.040BSulfur 0.045 0.045 0.045 0.035 0.035 0.015 0.045 0.035 0.010 0.025Sulfur 0.045 0.045 0.045 0.035B 0.035B 0.015 0.045B 0.035B 0.010 0.025BSilicon 0.60 0.60 0.60 0.60 0.60 0.300.60 0.75 1.00 0.200.50 1.50Nickel . . . 0.701.10 0.601.00 . . . . . . . . . . . . . . .
38、 0.40 1.00Chromium . . . 0.500.80 0.500.90 1.001.50 2.002.75 1.001.50 4.006.50 8.0010.00 8.09.5 11.514.0Molybdenum 0.450.65 0.450.65 0.901.20 0.450.65 0.901.20 0.450.65 0.450.65 0.901.20 0.851.05 0.50Columbium . . . . . . . . . . . . . . . . . . . . . 0.03 0.0600.10 . . .Nitrogen . . . . . . . . . .
39、 . . . . . . . . . . . . . . 0.0300.070 . . .Vanadium . . . . . . . . . . . . . . . . . . . . . 0.06 0.180.25 . . .Specified Residual ElementsAluminum . . . . . . . . . . . . . . . 0.01 . . . . . . 0.02 . . .Copper 0.50 0.50 0.50 0.50 0.50 0.35 0.50 0.50 . . . . . .Nickel 0.50 . . . . . . 0.50 0.50
40、0.50 0.50 0.50 . . . . . .Chromium 0.35 . . . . . . . . . . . . . . . . . . . . . . . . . . .Titanium . . . . . . . . . . . . . . . . . . . . . . . . 0.01 . . .Tungsten 0.10 0.10 0.10 0.10 0.10 . . . 0.10 0.10 . . . . . .Vanadium . . . . . . . . . . . . . . . 0.03 . . . . . . . . . . . .Zirconium .
41、. . . . . . . . . . . . . . . . . . . . . . . 0.01 . . .Total content ofthese residualelements1.00 0.60 0.60 1.00 1.00 1.00 1.00 1.00A Where ellipses () appear in this table, there is no requirement, and the element need not be analyzed for or reported.BFor lower maximum phosphorus or sulfur content
42、s, see Supplementary Requirement S52.TABLE 2 Tensile RequirementsAGradeTensileStrength,ksiMPaYieldStrength,Bmin, ksiMPaElonga-tion in2 in.50 mmmin, %CReduc-tion ofArea,min, %WC1 65 450 to 9062035 240 24 35WC4, WC5, WC6,WC970 485 to 9565540 275 20 35WC11 80 550 to 10572550 345 18 45C5, C12 90 620 to
43、11579560 415 18 35C12A 85 585 to 11076060 415 18 45CA15 90 620 to 11579565 450 18 30A Where ellipses () appear in this table, there is no requirement.B Determine by either 0.2 % offset method or 0.5 % extension-under-load method.C When ICI test bars are used in tensile testing as provided for in Spe
44、cificationA703/A703M, the gage length to reduced section diameter ratio shall be 4 to 1.A217/A217M 143castings may be repaired. To be accepted, a repaired casting shall pass the ultrasonic examination and shall meet the minimum wallthickness requirements of the purchase order.8.3 When additional ins
45、pection is desired, Supplementary Requirements S4, S5, and S10 may be ordered.8.4 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 qualified under Practice A488/A488M.9.2 All repair welds in C12A castin
46、gs shall be made with one of the following welding processes and consumables: SMAW,A5.5/A5.5M E90XX-B9; SAW, A5.23/A5.23M EB9 + Neutral Flux; GTAW, A5.28/A5.28M ER90S-B9, and FCAW, A5.29/A5.29M E91T1-B9. In addition, the sum of the Ni+Mn content, in all welding consumables used to weld repair C12A c
47、astings,shall not exceed 1.0%. Weld repaired Grade C12A castings shall be post-weld heat treated at 1350-1470F 730-800C.9.3 Weld repairs shall be inspected to the same quality standards that are used to inspect the castings. When castings areproduced with Supplementary Requirement S4 specified, weld
48、 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 that have leaked on hydrostatic test, or on castings in which the depth of any cavi
49、ty 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 radiographed to the same standards that are used to inspectthe castings.9.4 Weld repairs shall be considered major in the case of a casting that has leaked on hydrostatic test, or when the depth of thecavity prepared for welding exceeds 20 % of the wall
