1、Designation: A 453/A 453M 04Standard Specification forHigh-Temperature Bolting Materials, with ExpansionCoefficients Comparable to Austenitic Stainless Steels1This standard is issued under the fixed designation A 453/A 453M; the number immediately following the designation indicates the yearof origi
2、nal 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 (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of De
3、fense.1. Scope*1.1 This specification2covers four grades of bolting mate-rials with ten classes of yield strength ranging from 50 to 120ksi 345 to 827 MPa for use in high-temperature service suchas fasteners for pressure vessel and valve flanges. The materialrequires special processing and is not in
4、tended for generalpurpose applications. The term “bolting material,” as used inthis specification, covers rolled, forged, or hot-extruded bars;bolts, nuts, screws, washers, studs, and stud bolts. Headed boltsand rolled threads may be supplied.NOTE 1Other bolting materials are covered by Specificatio
5、n A 193/A 193M and Specification A 437/A 437M.1.2 Supplementary RequirementS1ofanoptional nature isprovided. This shall apply only when specified by the pur-chaser in the order.1.3 This specification is expressed in both inch-pound unitsand in SI units. However, unless the order specifies theapplica
6、ble “M” specification designation (SI units), the mate-rial shall be furnished to inch-pound units.1.4 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard. Within the text, theSI units are shown in brackets. The values stated in eachsystem are not exact
7、equivalents; therefore, each system mustbe used independently of the other. Combining values from thetwo systems may result in nonconformance with the specifi-cation.2. Referenced Documents2.1 ASTM Standards:3A 193/A 193M Specification for Alloy-Steel and StainlessSteel Bolting Materials for High-Te
8、mperature ServiceA 437/A 437M Specification for Alloy-Steel Turbine-TypeBolting Material Specially Heat Treated for High-Temperature ServiceA 962/A 962M Specification for Common Requirementsfor Steel Fasteners or Fastener Materials, or Both, Intendedfor Use at Any Temperature from Cryogenic to the C
9、reepRangeE 139 Test Method for Conducting Creep, Creep-Rupture,and Stress-Rupture Tests of Metallic MaterialsF 1470 Guide for Fastener Sampling for Specified Mechani-cal Properties and Performance Inspection3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 bolting materialthis c
10、overs rolled, forged, or hot-extruded bars; bolts, nuts, screws, washers, studs, and studbolts; and also includes those manufactured by upset headingor roll threading techniques.3.1.2 heat-treatment chargeone heat of material heattreated in one batch. If a continuous operation is used, theweight pro
11、cessed as a heat-treatment charge shall not exceedthe weights in Table 1.3.1.3 lota lot shall consist of the quantities shown in Table2.4. Ordering Information4.1 The inquiry and order shall indicate the following:4.1.1 Quantity (weight or number of pieces),4.1.2 Description of material (bars, bolts
12、, nuts, etc.),4.1.3 Grade and class (see Table 3),4.1.4 Method of finishing (see 6.1),4.1.5 Type of thread desired (see 6.1.1),4.1.6 Alternative test method option (see 7.2.4.3),4.1.7 Bolt shape option, if any,4.1.8 Thread option, if any,4.1.9 Test method for surface quality, if any,4.1.10 Test loca
13、tion option, if any,4.1.11 Rejection option, if any, and1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel, and Related Alloys and is the direct responsibility of SubcommitteeA01.22 on Steel Forgings and Wrought Fittings for Piping Applications and BoltingMa
14、terials for Piping and Special Purpose Applications.Current edition approved Oct. 1, 2004. Published October 2004. Originallyapproved in 1961. Last previous edition approved in 2003 as A 453/A 453M 03.2For ASME Boiler and Pressure Vessel Code Applications see related Specifi-cation SA-453 in Section
15、 II of that Code.3For 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 website.1*A Summary of Changes section appears at th
16、e end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.1.12 If stress-rupture testing is not required, except forGrade 660 Class D (see 7.2.1).5. Common Requirements5.1 Material and fasteners supplied to this specifi
17、cation shallconform to the requirements of Specification A 962/A 962M.These requirements include test methods, finish, thread dimen-sions, marking, certification, optional supplementary require-ments, and others. Failure to comply with the requirements ofSpecification A 962/A 962M constitutes noncon
18、formance withthis specification. In case of conflict between the requirementsof this specification and Specification A 962/A 962M, thisspecification shall prevail.6. Materials and Manufacture6.1 Finishing Process:6.1.1 Threads may be performed by machining or rolling.For Type 1 bolting, threading sh
19、all be performed after precipi-tation heat treatment. Types M1 and M2 bolting shall havemachine cut threads. For Types 2 R1 and R2, bolting shall haverolled threads. Types R1 and M1 bolting, threading shall beperformed after precipitation heat treatment. Types R2 and M2bolting shall be threaded afte
20、r solution heat treatment but priorto precipitation heat treatment. When not specified by thepurchaser, the type supplied shall be the option of the manu-facturer.6.2 Heat TreatmentEach grade and class shall be heattreated as prescribed in Table 4.7. Mechanical Properties7.1 Tension Test:7.1.1 Requi
21、rementsThe material in each heat-treatmentcharge shall conform to the room-temperature tensile require-ments in Table 5.7.1.2 Number of Specimens:7.1.2.1 Heat-Treated BarsWhen not more than two sizesof bars are heat treated in the same load, one tension test shallbe made from each size in each heat
22、of material in theheat-treatment charge (see 3.1.2). When more than two sizes ofbars are treated in the same charge, one tension test shall bemade from one bar of each of the two largest diameters fromeach heat of material in the heat-treating charge.7.1.2.2 Finished PartsOne tension test shall be m
23、ade ifthe lot consists of parts of the same nominal diameter. If the lotconsists of parts of more than one nominal diameter, onetension test shall be made from each nominal diameter of eachheat involved in the lot (see Section 3).7.1.2.3 The diameter range shall be in increments of12 in.12.5 mm.7.2
24、Stress-Rupture Test:7.2.1 RequirementsThe material shall conform to thestress-rupture requirements prescribed in Table 6 for designtemperatures above 800 F 427 C. Material not stress-rupture tested shall be permanently stamped NR. Grade 660Class D does not require stress-rupture and shall be stamped
25、NR.7.2.2 The number of specimens shall be the same as therequired number of tension test specimens.7.2.3 The test location and orientation shall be the same asthat required for the tension test specimens.7.2.4 Test Method:7.2.4.1 The rupture test shall be performed in accordancewith Practice E 139.7
26、.2.4.2 A combination smooth and notched test specimen,machined to the dimensions prescribed in Fig. 1 and Table 7,shall be tested in accordance with the stress-rupture require-ments prescribed in Table 6. The test shall be continued torupture. The rupture shall occur in the smooth section of thebar.
27、7.2.4.3 As an alternative procedure and, when specificallyapproved by the purchaser, separate smooth and notched testspecimens, machined from adjacent sections of the same piece,with gage sections conforming to the respective dimensions ofTable 7, may be tested under the above conditions. The notche
28、dspecimen need not be tested to rupture but shall not rupture inless time than the companion smooth specimen.7.2.4.4 When the minimum specified time to rupture inTable 6 has been achieved, incremental loading may be used toaccelerate the time to rupture. At intervals of 8 to 16 h,preferably 8 to 10
29、h, the stress shall be increased in incrementsof 5000 psi 34.5 MPa. Rupture location, and elongationrequirements shall be as prescribed in Table 6, 7.2.4.2, and7.2.4.3.7.3 Hardness Test:7.3.1 RequirementsThe material shall conform to theroom temperature hardness requirements prescribed in Table 5.Fo
30、r Grade 660 Class D, in the case of conflict, tensile testresults shall prevail over minimum hardness.7.3.2 Number of Tests:7.3.2.1 Bars 2 in. 50 mm and OverOne test on eachmill-treated length.7.3.2.2 Bars under 2 in. 50 mmOne test on at least 10 %of the mill treated lengths.7.3.2.3 FastenersOne tes
31、t each on two fasteners or on asample per Guide F 1470, Table 3, sample size B for each heatlot, whichever is the larger sample.7.3.3 Test LocationsThe hardness test shall be made at thecenter of the cross section for bars up to 1 in. 25 mm indiameter, and at the midradius on bars 1 in. 25 mm and la
32、rgerin diameter.TABLE 1 Continuous Heat-Treatment Charge SizesDiameter, in. mm Weight, lb kgTo 134 44 3000 1400Over 134 44 to 212 63 6000 2700Over 212 63 12000 5400TABLE 2 Lot SizesDiameter, in. mm Maximum Lot Size, lb kg112 38 and under 200 90Over 112 38 to 134 44, incl 300 140Over 134 44 to 212 63
33、, incl 600 270Over 212 63 20 piecesA 453/A 453M 042TABLE 3 Chemical RequirementsGrade 660 Grade 651UNS Number S66286 S63198Content, %Product Analysis Variation,Over or Under, % Content, %Product Analysis Variation,Over or Under, %Carbon 0.08 max 0.01 over 0.280.35 0.02Manganese 2.00 max 0.04 0.751.5
34、0 0.04Phosphorus 0.040 max 0.005 over 0.040 max 0.005 overSulfur 0.030 max 0.005 over 0.030 max 0.005 overSilicon 1.00 max 0.05 0.300.80 0.05Nickel 24.027.0 0.20 8.011.0 0.15Chromium 13.516.0 0.20 18.021.0 0.25Molybdenum 1.001.50 0.05 1.001.75 0.05Tungsten . . 1.001.75 0.05Titanium 1.902.35 0.05 0.1
35、00.35 0.05 overColumbiumA. . 0.250.60 0.05Aluminum 0.35 max 0.05 over . .Vanadium 0.100.50 0.03 . .Boron 0.0010.010 0.0004 under to . .0.001 overCopper . . 0.50 max 0.03 overGrade 662 Grade 665UNS Number S66220 S66545Content, %Product Analysis, VariationOver or Under, % Content, %Product Analysis Va
36、riation,Over or Under, %Carbon 0.08 max 0.01 over 0.08 max 0.01 overManganese 0.401.00 0.03 1.252.00 0.04Phosphorus 0.040 max 0.005 over 0.040 max 0.005 overSulfur 0.030 max 0.005 over 0.030 max 0.005 overSilicon 0.401.00 0.05 0.100.80 0.05Nickel 24.028.0 0.20 24.028.0 0.20Chromium 12.015.0 0.15 12.
37、015.0 0.15Molybdenum 2.03.5 0.10 1.252.25 0.10Titanium 1.802.10 0.05 2.703.3 0.05Aluminum 0.35 max 0.05 over 0.25 max 0.05 overCopper 0.50 max 0.03 over 0.25 max 0.03 overBoron 0.0010.010 0.0004 under to 0.010.07 0.0050.001 overAOr columbium plus tantalum.TABLE 4 Heat Treatment RequirementsAGrade Cl
38、ass Solution Treatment Hardening Treatment660 A 16506 25 F 900 6 14 C, hold 2 h, min, and liquidquench1325 6 25 F 720 6 14 C, hold 16 h, air coolB 1800 6 25 F 980 6 14 C, hold 1 h, min, and liquidquench1325 6 25 F 720 6 14 C, hold 16 h, air coolC 1800 6 25 F 980 6 14 C, hold 1 h min, and oil quench
39、1425 6 25 F 775 6 14 C hold 16 h, air cool1200 6 25 F 650 6 14 C hold 16 h, air coolD 1650 6 25 F 900 6 14 C, hold 2 h min, and liquidquench or1800 6 25 F 980 6 14 C, hold 1 h min, and liquidquench1325 6 25 F 720 6 14 C, hold 16 h, air coolIf necessary to achieve properties, second age:1200 6 25 F 6
40、50 6 14 C hold 16 h, air cool651 A hot-cold worked at 1200 F 650 C min with 15 % min reduction in cross-sectionalarea, stress-relief anneal at 1200 F 650 C min or 4 h, minB hot-cold worked at 1200 F 650 C min with 15 % min reduction of cross-sectionalarea, stress-relief anneal at 1350 F 730 C min fo
41、r 4 h, min662 A 18006 25 F 980 6 14 C, hold 2 h, liquid quench 1350 to 1400 F 730 to 760 C, hold 20 h, furnace cool to 12006 25 F 650 6 14C, hold 20 h, air coolB 1950 6 25 F 1065 6 14 C, hold 2 h, liquid quench 1350 to 1400 F 730 to 760 C, hold 20 h, furnace cool to 1200 6 25 F 650 6 14C, hold 20 h,
42、 air cool665 A 18006 25 F 980 6 14 C, hold 3 h, liquid quench 1350 to 1400 F 730 to 760 C, hold 20 h, furnace cool to 12006 25 F 650 6 14C, hold 20 h, air coolB 2000 6 25 F 1095 6 14 C, hold 3 h, liquid quench 1350 to 1400 F 730 to 760 C, hold 20 h, furnace cool to 1200 6 25 F 650 6 14C, hold 20 h,
43、air coolATimes refer to the minimum time material is required to be at temperature.A 453/A 453M 043TABLE 5 Mechanical Property RequirementsGrade ClassTensile Strength,minYield Strength(0.2 % Offset), minElongation in43 Diam,min, %Reduction ofArea, min, %Brinell HardnessNumberApproximate Rockwell Har
44、dness,B and Cksi MPa ksi MPa min max660 A, B, and C 130 895 85 585 15 18 248341 24 HRC 37 HRCD 130 895 105 725 15 18 248321 24 HRC 35 HRC651 A 100 690 70A485 18 35 217277 95 HRB 29 HRC60B415B 95 655 60A415 18 35 212269 93 HRB 28 HRCC50B345662 A 130 895 85 585 15 18 248321 24 HRC 35 HRCCB 125 860 80
45、550 15 18 248321 24 HRC 35 HRC665 A 170 1170 120 830 12 15 311388 32 HRC 41 HRCB 155 1070 120 830 12 15 311388 32 HRC 41 HRCAMaterial sizes 3 in. 76 mm and under in diameter.BMaterial sizes over 3 in. 76 mm in diameter.CConversion numbers taken from Specification A 193/A 193M, Table number 2 (austen
46、itic steels); others by interpolation.TABLE 6 Stress Rupture RequirementsGrade ClassTestTemperature,F CStress, minTime toRupture,min, hAElongation,min, %ksi MPa660 A, B, and C 1200 650 56 385 100 5651 A and B 1200 650 40 275 100 5662 A and B 1200 650 55 380 100 5665 A 1200 650 75 515 100 3B 1200 650
47、 70 485 100 5AThe combination bar specimen shown in Fig.number 1 shall be testedcontinuously at the temperature and at the minimum stress specified or at agreater stress and shall rupture in a time not less than that specified.A 453/A 453M 0448. Product Marking8.1 Bolts, Nuts, Screws, Studs, and Ste
48、el BoltsIn additionto the grade and class shown in Table 4, the type designation(see 6.1.1) shall also appear on all bolting material so pro-cessed. Grade 660 Class D shall be stamped NR in addition toother required markings.9. Keywords9.1 boltssteel; fastenerssteel; marking; nutssteel; pre-cipitati
49、on hardening steels; pressure vessel service; revisionletter; steel barsalloy; steel bolting material; steel flanges;steel values; temperature service applicationshigh; year dateFIG. 1 Combination Smooth-Notch Stress-Rupture Test Specimen(See Table 6)TABLE 8 Permissible Variations in Size of Cold-Finished BarsSpecified Size, in. mm
