1、Designation: A105/A105M 11a A105/A105M 12 Endorsed byManufacturers Standardization Societyof the Valve and Fittings IndustryUsed in USDOE-NE StandardsStandard Specification forCarbon Steel Forgings for Piping Applications1This standard is issued under the fixed designation A105/A105M; the number imm
2、ediately 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.A superscript epsilon () indicates an editorial change since the last revision or reapproval.This standard h
3、as been approved for use by agencies of the Department of Defense.1. Scope*1.1 This specification2 covers forged carbon steel piping components for ambient- and higher-temperature service in pressuresystems. Included are flanges, fittings, valves, and similar parts ordered either to dimensions speci
4、fied by the purchaser or todimensional standards such as the MSS, ASME, and API specifications referenced in Section 2. Forgings made to this specificationare limited to a maximum weight of 10 000 lb 4540 kg. Larger forgings may be ordered to Specification A266/A266M.Tubesheets and hollow cylindrica
5、l forgings for pressure vessel shells are not included within the scope of this specification.Although this specification covers some piping components machined from rolled bar and seamless tubular products (see 4.2), itdoes not cover raw material produced in these product forms.1.2 Supplementary re
6、quirements are provided for use when additional testing or inspection is desired. These shall apply onlywhen specified individually by the purchaser in the order.1.3 Specification A266/A266M covers other steel forgings and Specifications A675/A675M and A696 cover other steel bars.1.4 This specificat
7、ion is expressed in both inch-pound units and SI units. However, unless the order specifies the applicable “M”specification designation (SI units), the material shall be furnished to inch-pound units.The values stated in either SI units or inch-pound units are to be regarded separately as standard.
8、The values stated in each systemmay not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the twosystems may result in non-conformance with the standard.1.4 This specification is expressed in both inch-pound units and SI units. However, unle
9、ss the order specifies the applicable “M”specification designation (SI units), the material shall be furnished to inch-pound units. The values stated in either SI units orinch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values state
10、din each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining valuesfrom the two systems may result in non-conformance with the standard.NOTE 1The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for suc
11、h traditional terms as “nominal diameter,”“size,” and “nominal size.”NOTE 1The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as “nominal diameter,”“size,” and “nominal size.”2. Referenced Documents2.1 In addition to those reference
12、documents listed in Specification A961/A961M, the following list of standards apply to thisspecification:2.2 ASTM Standards:3A266/A266M Specification for Carbon Steel Forgings for Pressure Vessel ComponentsA675/A675M Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality, Mechanical Prop
13、ertiesA696 Specification for Steel Bars, Carbon, Hot-Wrought or Cold-Finished, Special Quality, for Pressure Piping Components1 This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.22on St
14、eel Forgings and Wrought Fittings for Piping Applications and Bolting Materials for Piping and Special Purpose Applications.Current edition approved Dec. 1, 2011Nov. 1, 2012. Published January 2012November 2012. Originally approved in 1926. Last previous edition approved in 2011 asA105/A105M11.11a.
15、DOI: 10.1520/A0105_A0105M-11a.10.1520/A0105_A0105M-12.2 For ASME Boiler and Pressure Vessel Code applications see related Specification SA-105 in Section II of that Code.3 For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For An
16、nual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on 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 b
17、e 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 document.*A Summary of Changes section appears at the end o
18、f this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1A788/A788M Specification for Steel Forgings, General RequirementsA961/A961M Specification for Common Requirements for Steel Flanges, Forged Fittings, Valves, and Parts for
19、 PipingApplications2.3 MSS Standards:SP 44 Standard for Steel Pipe Line Flanges42.4 ASME Standards:B16.5 Dimensional Standards for Steel Pipe Flanges and Flanged Fittings5B16.9 Wrought Steel Buttwelding Fittings5B16.10 Face-to-Face and End-to-End Dimensions of Ferrous Valves5B16.11 Forged Steel Fitt
20、ings, Socket Weld, and Threaded5B16.34 Valves-Flanged, Threaded and Welding End5B16.47 Large Diameter Steel Flanges52.5 ASME Boiler and Pressure Vessel Code:Section IX Welding Qualifications52.6 API Standards:API-600 Flanged and Butt-Welding-End Steel Gate Valves6API-602 Compact Design Carbon Steel
21、Gate Valves for Refinery Use63. Ordering Information3.1 See Specification A961/A961M.3.1.1 Additional requirements (see 12.2).4. General Requirements4.1 Product furnished to this specification shall conform to the requirements of Specification A961/A961M, including anysupplementary requirements that
22、 are indicated in the purchase order. Failure to comply with the requirements of SpecificationA961/A961M constitutes nonconformance with this specification. In case of a conflict between the requirements of thisspecification and Specification A961/A961M, this specification shall prevail.4.2 Except a
23、s permitted by Section 6 in Specification A961/A961M, the finished product shall be a forging as defined in theTerminology Section of Specification A788/A788M.5. Heat Treatment5.1 Heat treatment is not a mandatory requirement of this specification except for the following piping components:5.1.1 Fla
24、nges above Class 300,75.1.2 Flanges of special design where the design pressure at the design temperature exceeds the pressure-temperature ratingsof Class 300, Group 1.1,5.1.3 Flanges of special design where the design pressure or design temperature are not known,5.1.4 Piping components other than f
25、langes which meet both of the following criteria: (1) over NPS 4 and (2) above Class 300,and5.1.5 Piping components of Special Class8 other than flanges which meet both of the following criteria: (1) over NPS 4 and (2) when the working pressure at the operating temperature exceeds the tabulated valu
26、es for Special Class 300, Group 1.1.5.2 Heat treatment, when required by 5.1 shall be annealing, normalizing, or normalizing and tempering or quenching andtempering in accordance with Specification A961/A961M.5.2.1 Quenching shall consist of either (1) fully austenitizing the forgings followed by qu
27、enching in a suitable liquid mediumor (2) using a multiple stage procedure whereby the forgings are first fully austenitized and rapidly cooled, then reheated topartially reaustenitize, followed by quenching in a suitable liquid medium. All quenched forgings shall be tempered as prescribedin Specifi
28、cation A961/A961M.6. Chemical Composition6.1 The steel shall conform to the chemical requirements specified in Table 1.6.2 Steels to which lead has been added shall not be used.4 Available from Manufacturers Standardization Society of the Valve and Fittings Industry (MSS), 127 Park St., NE, Vienna,
29、VA 22180-4602, http:/www.mss-.5 Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http:/www.asme.org.6 Available from American Petroleum Institute (API), 1220 L. St., NW, Washington, DC 20005-4070, http:/www.api
30、.org.7 For definition of Class 300, see ASME B16.5.8 For definition of special class, see ASME B16.34.A105/A105M 1227. Mechanical Properties7.1 The material shall conform to the mechanical property requirements prescribed in Table 2 and Table 3.7.2 For normalized, normalized and tempered, or quenche
31、d and tempered forgings, the central axis of the test specimen shallcorrespond to the 14 T plane or deeper position, where T is the maximum heat-treated thickness of the represented forging. Inaddition, for quenched and tempered forgings, the midlength of the test specimen shall be at least T from a
32、ny second heat-treatedsurface. When section thickness does not permit this positioning, the test specimen shall be positioned as near as possible to theprescribed location.7.3 Tension Tests:7.3.1 One tension test shall be made for each heat of as-forged components.7.3.2 One tension test shall be mad
33、e from each heat-treating charge. If more than one heat is included in such a charge, eachheat shall be tested.7.3.2.1 When the heat-treating temperatures are the same and the furnaces (either batch or continuous type), are controlledwithin 625 F 614 C and equipped with recording pyrometers so that
34、complete records of heat treatment are available, thenone tension test from each heat is required instead of one test from each heat in each heat-treatment charge. The test specimenmaterial shall be included with a furnace charge.7.3.3 Testing shall be performed as specified in Specification A961/A9
35、61M. The largest feasible round specimen shall be usedexcept when hollow cylindrically shaped parts are machined from seamless tubulars. When hollow cylindrically shaped parts aremachined from seamless tubular materials, strip tests may be used.TABLE 1 Chemical RequirementsNOTE 1For each reduction o
36、f 0.01 % below the specified carbonmaximum (0.35 %), an increase of 0.06 % manganese above the specifiedmaximum (1.05 %) will be permitted up to a maximum of 1.65 %.Element Composition, %Carbon 0.35 maxManganese 0.601.05Phosphorus 0.035 maxSulfur 0.040 maxSilicon 0.100.35Copper 0.40 maxANickel 0.40
37、maxAChromium 0.30 maxA,BMolybdenum 0.12 maxA,BVanadium 0.08 maxA The sum of copper, nickel, chromium, molybdenum and vanadium shall notexceed 1.00 %.B The sum of chromium and molybdenum shall not exceed 0.32 %.TABLE 2 Mechanical RequirementsATensile strength, min, psi MPa 70 000 485Tensile strength,
38、 min, ksi MPa 70 485Yield strength, min, psi MPaB 36 000 250Yield strength, min, ksi MPaB 36 250Elongation in 2 in. or 50 mm, min, %:Basic minimum elongation for walls 516 in. 7.9 mmand over in thickness, strip tests.30When standard round 2-in. or 50-mm gage length orsmaller proportionally sized spe
39、cimen with the gagelength equal to 4D is used22When standard round 2-in. or 50-mm gage length orsmaller proportionally sized specimen with the gagelength equal to 4D is used22For strip tests, a deduction for each 132-in. 0.8-mmdecrease in wall thickness below 516 in. 7.9 mmfrom the basic minimum elo
40、ngationof the percentage points of Table 31.50CReduction of area, min, %D 30Hardness, HBW, max 187A For small forgings, see 7.3.4.B Determined by either the 0.2 % offset method or the 0.5 % extension-under-loadmethod.C See Table 3 for computed minimum values.D For round specimens only.A105/A105M 123
41、7.3.4 Forgings too small to permit obtaining a subsize specimen of 0.250 in. 6.35 mm diameter or larger parallel to thedimension of maximum working, and produced in equipment unsuitable for the production of a separately forged test bar such asan automatic or semi-automatic press, may be accepted on
42、 the basis of hardness only. One percent of the forgings per lot (see Note2), or ten forgings, whichever is the lesser number, shall be selected at random, prepared, and tested using the standard Brinell test.The locations of the indentations shall be at the option of the manufacturer but shall be s
43、elected to be representative of the forgingas a whole. One indentation per forging shall be required but additional indentations may be made to establish the representativehardness. The hardness of all forgings so tested shall be 137 to 187 HBW inclusive.NOTE 2A lot is defined as the product from a
44、mill heat or if heat treated, the product of a mill heat per furnace charge.7.4 Hardness Tests:7.4.1 Two hardness tests shall be made for each heat of as-forged components. When more than one forging is produced fromeach heat, a minimum of two forgings shall be tested with one reading from each forg
45、ing. When only one forging is produced,it shall be tested in two locations.7.4.2 Except when only one forging is produced, a minimum of two forgings shall be hardness tested per batch or continuousrun as defined in 7.3.2.1 to ensure that forgings are within the hardness limits given in Table 2. When
46、 only one forging is produced,it shall be hardness tested in two locations to ensure it is within the hardness limits given in Table 2.7.4.3 Testing shall be as specified in Specification A961/A961M. The purchaser may verify that the requirement has been metby testing at any location on the forging,
47、 provided such testing does not render the forging useless.8. Hydrostatic Tests8.1 Such tests shall be conducted by the forging manufacturer only when Supplementary Requirement S57 in SpecificationA961/A961M is specified.9. Retreatment9.1 If the results of the mechanical tests do not conform to the
48、requirement specified, the manufacturer may heat treat or reheattreat the forgings as applicable and repeat the test specified in Section 7.10. Repair by Welding10.1 Repair of defects by the manufacturer is permissible for forgings made to dimensional standards such as those of ASMEor for other part
49、s made for stock by the manufacturer. Prior approval of the purchaser is required to repair-weld special forgingsmade to the purchasers requirements.10.2 Weld repairs shall be made by a process that does not produce undesirably high levels of hydrogen in the welded areas.10.3 All forgings repaired by welding shall be post-weld heat treated between 1100 F 593 C and the lower transformationtemperature for a minimum of 12 h/in. 12 h/25.4 mm of maximum section thickness, or alternatively annealed, normalized andTABLE 3 Comput
