1、Designation: A540/A540M 10Standard Specification forAlloy-Steel Bolting for Special Applications1This standard is issued under the fixed designation A540/A540M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revis
2、ion. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification2covers regular and special-qualityalloy steel bolting that may be used for nuclear and otherspecial applicat
3、ions. See Specification A962/A962M for thedefinition of bolting.1.2 The following referenced common requirements areindispensable for application of this specification: SpecificationA962/A962M.1.3 Supplementary requirements of an optional nature areprovided for use at the option of the purchaser. Th
4、ese supple-mentary requirements only apply when specified individuallyby the purchaser in the purchase order or contract.1.4 This specification is expressed in both inch-pound unitsand in SI units; however, unless the purchase order or contractspecifies the applicable “M” specification designation (
5、SIunits), inch-pound units shall apply.1.5 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. Within the text, theSI units are shown in brackets. The values stated in eachsystem may not be exact equivalents; therefore, each systemshall be used independ
6、ently of the other. Combining valuesfrom the two systems may result in non-conformance with thestandard.2. Referenced Documents2.1 ASTM Standards:3A962/A962M Specification for Common Requirements forBolting Intended for Use at Any Temperature from Cryo-genic to the Creep RangeE45 Test Methods for De
7、termining the Inclusion Content ofSteel3. Ordering Information3.1 The inquiry and orders for material under this specifi-cation shall include the following, as required, to describe thedesired material adequately:3.1.1 Grade and Class3.1.2 Condition (Section 5),3.1.3 Heat treatment (Section 6),3.1.4
8、 Supplementary Requirements (S1 to S9),3.1.5 Reports required (Section 16),3.1.6 End use, and3.1.7 Any special requirements.3.2 The purchaser is referred to the listed supplementaryrequirements.4. Common Requirements4.1 Bolting supplied to this specification shall conform tothe requirements of Speci
9、ficationA962/A962M. These require-ments include test methods, finish, thread dimensions, macroetch, marking, certification, optional supplementary require-ments, and others. Failure to comply with the requirements ofSpecification A962/A962M constitutes nonconformance withthis specification. In case
10、of conflict between this specificationand Specification A962/A962M, this specification shall pre-vail.5. Manufacture5.1 Bolting material shall be supplied hot-rolled or hot-forged or cold-finished at the option of the producer. However,if desired by the purchaser, cold finishing may be specified.6.
11、Heat Treatment6.1 Bolting material ordered in the annealed condition shallhave a structure suitable for machining. Such annealed materialis not intended to be used without subsequent quenching andtempering as specified in 6.21This specification is under the jurisdiction of ASTM Committee A01 on Stee
12、l,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.22 on Steel Forgings and Wrought Fittings for Piping Applications and BoltingMaterials for Piping and Special Purpose Applications.Current edition approved April 1, 2010. Published May 2010. Originallyapproved i
13、n 1965. Last previous edition approved in 2006 as A540/A540M06.DOI: 10.1520/A0540_A0540M-09.2For ASME Boiler and Pressure Vessel Code Applications see related Specifi-cation SA-540 in Section II of that Code.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Custome
14、r Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.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, P
15、A 19428-2959, United States.6.2 Bolting ordered in the liquid-quenched and temperedcondition shall be uniformly reheated from a temperaturebelow the cooling transformation range to the proper austen-itizing temperature, quenched in a liquid medium under sub-stantially uniform conditions, and then un
16、iformly reheated fortempering. The minimum tempering temperature shall be 850F 455 C.6.3 Material that has been straightened after quenching andtempering shall be stress relieved by reheating to a temperaturenot lower than 100 F 55 C under the tempering tempera-ture.7. Chemical Composition7.1 The st
17、eel shall conform to the chemical requirementsprescribed in Table 1.8. Tensile Requirements8.1 Material furnished in the annealed condition shall becapable of meeting the specified tensile properties for the classas specified in Table 2 when heat treated in accordance with 6.2and 6.3 (see Supplement
18、ary Requirement S4).8.2 Bolting in the quenched and tempered or quenched,tempered and stress-relieved condition shall conform to prop-erties shown in Table 2 for the specified class.9. Hardness Requirements9.1 The hardness shall be determined on the surface of thematerial after removal of decarburiz
19、ation.9.2 The hardness of material in the annealed condition shallnot be greater than 235 HB.9.3 The hardness of material in the quenched and temperedor quenched, tempered and stress-relieved condition shall bewithin the limits in Table 2 for the specified class.10. Impact Requirements10.1 Annealed
20、material after proper heat treatment shall becapable of meeting the impact requirements in Table 2 or ofSupplementary Requirement S8, if so specified (see Supple-mentary Requirement S4).10.2 Material in the quenched and tempered or quenched,tempered, and stress-relieved condition shall conform to th
21、eimpact requirements in Table 2, or of Supplementary Require-ment S8 if so specified.10.3 The percent of shear (ductility or fibrous) fracture shallbe computed. The computed value shall be recorded for allimpact specimens.10.4 The amount of lateral expansion shall be measured.The measured value shal
22、l be recorded for all impact specimens.10.5 The percent shear and the amount of lateral expansionshall be reported for information purposes (see 16.1).TABLE 1 Chemical RequirementsAIdentificationSymbolGrade$ B21 B22 B23 B24 B24V(Cr-Mo-V) (4142-H) (E-4340-H) (4340 Mod.) (4340V Mod.)Chromium-Molybdenu
23、m-VanadiumChromium-MolybdenumChromium-Nickel-MolybdenumChromium-Nickel-MolybdenumChromium-Nickel-Molybdenum-VanadiumRange, % ProductVariation,Over orUnder,B%Range, % ProductVariation,Over orUnder,B%Range, % ProductVariation,Over orUnder,B%Range, % ProductVariation,Over orUnder,B%ProductVariation,Ove
24、r orUnder,B%Carbon 0.360.44 0.02 0.390.46 0.02 0.370.44 0.02 0.370.44 0.02 0.370.44 0.02Manganese 0.450.70 0.03 0.651.10 0.04 0.600.95 0.04 0.700.90 0.04 0.600.95 0.04Phosphorus, max 0.025C0.005 0.025C0.005 0.025C0.005 0.025C0.005 0.025C0.005Sulfur, max 0.025C0.005 0.025C0.005 0.025C0.005 0.025C0.00
25、5 0.025C0.005Silicon 0.150.35 0.02 0.150.35 0.02 0.150.35 0.02 0.150.35 0.02 0.150.35D0.02Chromium 0.801.15 0.05 0.751.20 0.05 0.650.95 0.05 0.700.95 0.05 0.600.95 0.05Nickel . . . . . . . . . . . . 1.552.00 0.05 1.652.00 0.05 1.552.00 0.05Molybdenum 0.500.65 0.03 0.150.25 0.02 0.200.30 0.02 0.300.4
26、0 0.02 0.400.60 0.03Vanadium 0.250.35 0.03 . . . . . . . . . . . . . . . . . . 0.040.10 0.01AThe intentional addition of Bi, Se, Te, and Pb is not permitted.BUnless otherwise specified, separate determinations may vary from the specified ranges, except that elements in any heat must not vary both ab
27、ove and below thespecified range.CPhosphorus and sulfur content is 0.04 % max when open-hearth steel is specified.DSilicon content is 0.35 % max if vacuum-carbon deoxidized.A540/A540M 102TABLE 2 Mechanical Property RequirementsNOTE 1The minimum average of 3 specimens shall not be less than 35 ftlbf
28、47 J. One specimen from a set of 3 may be less than 35 ftlbf 47J but not less than 30 ftlbf 41 J.NOTE 2 The minimum average of 3 specimens shall not be less than 30 ftlbf 41 J. One specimen from a set of 3 may be less than 30 ftlbf 41J but not less than 25 ftlbf 34 J.NOTE 3The minimum average of 3 s
29、pecimens shall not be less than 25 ftlbf 34 J. One specimen from a set of 3 may be less than 25 ftlbf 34J but not less than 20 ftlbf 27 J.NOTE 4No minimum values established. Tests shall be run for information only.Grade Class Diameter TensileStrength,minYieldStrength,0.2 %offset,minElonga-tion,min,
30、 %Reduc-tion ofArea,min, %SurfaceBrinellHardnessCharpyV-Notch+10 F12.2 Cmin maxInch-Pound Unitsin. ksi ksi In 2 in.B21 5 to 2, incl 120 105 15 50 241 285 Note 4(Cr-Mo-V) over 2 to 6, inclover 6 to 8, incl11511510010015155050248255302311Note 4Note 44 to 3, inclover 3 to 6, incl13513512012013134545269
31、277331352Note 4Note 43 to 3, inclover 3 to 6, incl14514513013012124040293302352375Note 4Note 42 to 4, incl 155 140 11 40 311 401 Note 41 to 4, incl 165 150 10 35 321 429 Note 4B22 5 to 2, incl 120 105 15 50 248 293 Note 1(4142-H) over 2 to 4, incl 115 100 15 50 255 302 Note 44 to 1, inclover 1 to 4,
32、 incl13513512012013134545269277341363Note 1Note 43 to 2, inclover 2 to 4, incl14514513013012124040293302363375Note 4Note 42 to 3, incl 155 140 11 40 311 401 Note 41t112 , incl 165 150 10 35 321 401 Note 4B23(E-4340-H)5 to 6, inclover 6 to 8, inclover 8 to 912 , incl1201151151051001001515155050502482
33、55262311321321Note 1Note 1Note 44 to 3, inclover 3 to 6, inclover 6 to 912 , incl135135135120120120131313454545269277285341352363Note 1Note 1Note 43 to 3, inclover 3 to 6, inclover 6 to 912 , incl145145145130130130121212404040293302311363375388Note 2Note 2Note 42 to 3, inclover 3 to 6, inclover 6 to
34、 912 , incl155155155140140140111111404040311311321388401415Note 4Note 4Note 41 to 3, inclover 3 to 6, inclover 6 to 8, incl165165165150150150101010353535321331341415429444Note 4Note 4Note 4B24(4340 Mod.)5 to 6, inclover 6 to 8, inclover 8 to 912 , incl120115115105100100151515505050248255262311321321
35、Note 1Note 1Note 14 to 3, incl 135 120 13 45 269 341 Note 1over 3 to 6, incl 135 120 13 45 277 352 Note 1over 6 to 8, incl 135 120 13 45 285 363 Note 1over 8 to 912 , incl 135 120 13 45 293 363 Note 43 to 3, inclover 3 to 8, inclover 8 to 912 , incl145145145130130130121212404040293302311363388388Not
36、e 2Note 2Note 42 to 7, inclover 7 to 912 , incl15515514014011114040311321401415Note 2Note 41 to 6, inclover 6 to 8, incl16516515015010103535321331415429Note 3Note 4B24V(4340V Mod.)3 to 4, inclover 4 to 8, incl14514513013012124040293302363375Note 1Note 2over 8 to 11, incl 145 130 12 40 311 388 Note 3
37、2 to 4, inclover 4 to 8, inclover 8 to 11, incl155155155140140140111111404040311311321388401415Note 2Note 3Note 4A540/A540M 103TABLE 2 ContinuedGrade Class Diameter TensileStrength,minYieldStrength,0.2 %offset,minElonga-tion,min, %Reduc-tion ofArea,min, %SurfaceBrinellHardnessCharpyV-Notch+10 F12.2
38、Cmin max1 to 4, inclover 4 to 8, inclover 8 to 11, incl165165165150150150101010353535321331331415429444Note 3Note 4Note 4Metric Unitsmm MPa MPaIn 50mmB21(Cr-Mo-V)5 to 50, inclover 50 to 150, incl82579572569015155050241248285302Note 4Note 4over 150 to 205, incl 795 690 15 50 255 311 Note 44 to 75, in
39、clover 75 to 150, incl93093082582513134545269277331352Note 4Note 43 to 75, inclover 75 to 150, incl1000100089589512124040293302352375Note 4Note 42 to 100, incl 1070 965 11 40 311 401 Note 41 to 100, incl 1140 1035 10 35 321 429 Note 4B22(4142-H)5 to 50, inclover 50 to 100, incl8257957256901515505024
40、8255293302Note 1Note 44 to 25, inclover 25 to 100, incl93093082582513134545269277341363Note 1Note 43 to 50, inclover 50 to 100, incl1000100089589512124040293302363375Note 4Note 421to 75, inclto 38, incl10701140965103511104035311321401401Note 4Note 4B23(E-4340-H)5 to 150, inclover 150 to 200 incl8257
41、9572569015155050248255311321Note 1Note 1over 200 to 240, incl 795 690 15 50 262 321 Note 44 to 75, inclover 75 to 150, inclover 150 to 240, incl930930930825825825131313454545269277285341352363Note 1Note 1Note 43 to 75, inclover 75 to 150, inclover 150 to 240, incl100010001000895895895121212404040293
42、302311363375388Note 2Note 2Note 42 to 75, inclover 75 to 150, inclover 150 to 240, incl107010701070965965965111111404040311311321388401415Note 4Note 4Note 41 to 75, inclover 75 to 150, inclover 150 to 200, incl114011401140103510351035101010353535321331341415429444Note 4Note 4Note 4B24(4340 Mod.)5 to
43、 150, inclover 150 to 200, inclover 200 to 240, incl825795795725690690151515505050248255262311321321Note 1Note 1Note 14 to 75, incl 930 825 13 45 269 341 Note 1over 75 to 150, incl 930 825 13 45 277 352 Note 1over 150 to 200, incl 930 825 13 45 285 363 Note 1over 200 to 240, incl 930 825 13 45 293 3
44、63 Note 43 to 75, inclover 75 to 200, incl1000100089589512124040293302363388Note 2Note 2over 200 to 240, incl 1000 895 12 40 311 388 Note 42 to 180, inclover 180 to 240, incl1070107096596511114040311321401415Note 2Note 41 to 150, inclover 150 to 200, incl114011401035103510103535321331415429Note 3Not
45、e 4B24V 3 to 100, incl 1000 895 12 40 293 363 Note 1(4340V Mod.) over 100 to 200, inclover 200 to 240, incl1000100089589512124040302311375388Note 2Note 32 to 100, inclover 100 to 200, inclover 200 to 280, incl107010701070965965965111111404040311311321388401415Note 2Note 3Note 41 to 100, inclover 100
46、 to 200, inclover 200 to 280, incl114011401140103510351035101010353535321331331415429444Note 3Note 4Note 4A540/A540M 10411. Workmanship, Finish, and Appearance11.1 The material shall be uniform in quality and free ofdefects that would be detrimental to the intended service. Ifmagnetic particle inspe
47、ction for such defects is desired,Supplementary Requirement S6 should be specified.11.2 Surface QualityMaterial shall be free of seams, laps,cracks, or other defects that are not removable within themachining cleanup allowance specified in Table 3.12. Surface Condition12.1 Material shall be cleaned
48、and furnished in the scale-free condition.13. Number of Tests13.1 Mechanical Tests on Quenched and Tempered Mate-rial:13.1.1 One test coupon shall be removed from each end ofone bar, one seamless tube, or one bored bar or from each oftwo forged hollows from each size of each heat in eachtempering ch
49、arge, or each 10 000 lb 4540 kg, whichever isless. One tension test and one impact test consisting of threeCharpy V-notch specimens shall be taken from each testcoupon. For testing in accordance with 15.1.1, two tests shallbe obtained from two representative production pieces fromeach size of each heat in each tempering charge or each 10 000lb 4540 kg, whichever is less.13.1.2 Hardness Test:13.1.2.1 Bars 2 in. 50 mm and over and all seamless tubesor bored bars shall be tested near each
