1、Designation: A1082/A1082M 12Standard Specification forHigh Strength Precipitation Hardening and Duplex StainlessSteel Bolting for Special Purpose Applications1This standard is issued under the fixed designation A1082/A1082M; the number immediately following the designation indicates theyear of origi
2、nal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Def
3、ense.1. Scope1.1 This specification covers high strength stainless steelbolting for special purpose applications such as pressurevessels. Several grades of precipitation-hardened and duplex(ferritic-austenitic) stainless steels are covered. Selection willdepend upon design, service conditions, mecha
4、nical propertiesand characteristics related to the application.1.2 The following referenced general requirements are in-dispensable for application of this specification: SpecificationA962/A962M.1.3 Supplementary Requirements are provided for use at theoption of the purchaser. The Supplementary Requ
5、irementsshall only apply when specified individually by the purchaserin 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 (SIunits), the inch
6、-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 independently of the o
7、ther. Combining valuesfrom the two systems may result in non-conformance with thestandard.1.6 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practic
8、es and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A276/A276M Specification for Stainless Steel Bars andShapesA370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA479/A479M Specification for Stainless Steel Bars
9、andShapes for Use in Boilers and Other Pressure VesselsA564/A564M Specification for Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel Bars and ShapesA959/A959M Guide for Specifying Harmonized StandardGrade Compositions for Wrought Stainless SteelsA962/A962M Specification for Common Requirem
10、ents forBolting Intended for Use at Any Temperature from Cryo-genic to the Creep Range2.2 ASNT Documents:3ASNT SNT-TC-1A Recommended Practice for PersonnelQualification and Certification in Nondestructive Testing3. Ordering Information3.1 The inquiry and order shall indicate the following, asrequire
11、d, to describe the desired material adequately:3.1.1 Quantity (weight or number of pieces),3.1.2 Description of item (bars, bolts, nuts, etc.),3.1.3 UNS Designation or Type (see Table 1),3.1.4 Heat-Treat Condition (see 7.1.1),3.1.5 Dimension/Threads, etc. (see the section in Specifica-tion A962/A962
12、M titled “Workmanship, Finish, andAppearance”), and3.1.6 Supplementary Requirements, if any.4. Common Requirements4.1 Bolting supplied to this specification shall conform tothe requirements of Specification A962/A962M. These re-quirements include test methods, finish, thread dimensions,1This specifi
13、cation 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 BoltingMaterials for Piping and Special Purpose Applications.Current edition ap
14、proved Nov. 15, 2012. Published December 2012. DOI:10.1520/A1082/A1082M-12.2For 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
15、 ASTM website.3Available fromAmerican Society for Nondestructive Testing (ASNT), P.O. Box28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http:/www.asnt.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1marking, terminology, test
16、ing, certification, optional supple-mentary requirements, and others. Failure to comply with therequirements of Specification A962/A962M constitutes non-conformance with this specification. In case of conflict be-tween the requirements of this specification and SpecificationA962/A962M, this specific
17、ation shall prevail.5. Materials and Manufacture5.1 Bars shall be produced in accordance with Specifica-tions A276/A276M, A479/A479M or A564/A564M as appli-cable. Finish (hot or cold, ground, rough turned, drawn, etc.)shall be at the option of the manufacturer unless otherwisespecified in the purcha
18、se order or contract.5.2 Fasteners shall be produced in accordance with thisspecification and the requirements of A962/A962M.6. Chemical Composition6.1 Each alloy shall conform to the chemical compositionrequirements prescribed in Table 1.7. Heat Treatment7.1 Precipitation Hardening (PH) Stainless S
19、teels:TABLE 1 Chemical RequirementsAUNSDesignationBTypeBCarbon Manganese Phosphorus Sulfur Silicon Chromium Nickel Molybdenum Nitrogen Other ElementsDuplex (Ferritic-Austenitic) GradesS31100 0.06 1.00 0.045 0.030 1.00 25.0-27.0 6.0-7.0 Ti 0.25S31260 0.030 1.00 0.030 0.030 0.75 24.0-26.0 5.5-7.5 2.5-
20、3.5 0.10-0.30 Cu 0.20-0.80,W 0.10-0.50S31803 0.030 2.00 0.030 0.020 1.00 21.0-23.0 4.5-6.5 2.5-3.5 0.08-0.20 S32101 0.040 4.0-6.0 0.040 0.030 1.00 21.0-22.0 1.35-1.70 0.10-0.80 0.20-0.25 Cu 0.10-0.80S32202 0.030 2.00 0.040 0.010 1.00 21.5-24.0 1.0-2.80 0.45 0.18-0.26 S32205 2205 0.030 2.00 0.030 0.0
21、20 1.00 22.0-23.0 4.5-6.5 3.0-3.5 0.14-0.20S32304 2304 0.030 2.50 0.040 0.030 1.00 21.5-24.5 3.0-5.5 0.05-0.60 0.05-0.20 Cu 0.05-0.60S32506 0.030 1.00 0.040 0.015 0.90 24.0-26.0 5.5-7.2 3.0-3.5 0.08-2.0 W 0.05-0.30S32550 255 0.040 1.50 0.040 0.030 1.00 24.0-27.0 4.5-6.5 2.9-3.9 0.10-0.25 Cu 1.50-2.5
22、0S32750 2507 0.030 1.20 0.035 0.020 0.80 24.0-26.0 6.0-8.0 3.0-5.0 0.24-0.32 Cu 0.50S32760 0.030 1.00 0.030 0.010 1.00 24.0-26.0 6.0-8.0 3.0-4.0 0.20-0.30 Cu 0.50-1.00,W 0.50-1.00,%Cr+3.3x%Mo+16x%N$40S32906 0.030 0.80-1.50 0.030 0.030 0.50 28.0-30.0 5.8-7.5 1.50-2.60 0.30-0.40 Cu 0.80S32950 0.030 2.
23、00 0.035 0.010 0.60 26.0-29.0 3.5-5.2 1.00-2.50 0.15-0.35S39277 0.025 0.80 0.025 0.002 0.80 24.0-26.0 6.5-8.0 3.0-4.0 0.23-.033 Cu 1.20-2.00,W 0.80-1.20Precipitation Hardening GradesS15700 632 0.09 1.00 0.040 0.030 1.00 14.0-16.0 6.5-7.7 2.00-3.00 Al 0.75-1.50S17400 630 0.07 1.00 0.040 0.030 1.00 15
24、.0-17.0 3.0-5.0 Cu 3.0-5.0,Cb +Ta 0.15-0.45S17600 635 0.08 1.00 0.040 0.030 1.00 16.0-17.5 6.0-7.5 Al 0.40,Ti 0.40-1.20S17700 631 0.09 1.00 0.040 0.030 1.00 16.0-18.0 6.5-7.7 Al 0.75-1.50S35500 634 0.10-0.15 0.50-1.25 0.040 0.030 0.50 15.0-16.0 4.0-5.0 2.5-3.2 0.07-0.13 Cb 0.10-0.50AMaximum or range
25、 unless otherwise indicated.BSee Guide A959/A959M.TABLE 2 Solution Treatment and Mechanical Property Requirements for PH GradesAUNSDesignationTypeSolutionTreatmentB,CF CMechanical Property Requirements in the Solution Treated ConditionTensileStrengthksi MPaYield Strengthksi MPaElongationin 2”50 mmor
26、 4D,min. %Reductionof Area,min. %HardnessDRockwell,maximumBrinell,maximumS15700 632 100 HRB 269S17400 630 Cool to below90 3238 HRC 363S17600 635 Air Cool 120 825 75 515 10 45 32 HRC 302S17700 631 98 HRB 229S35500 634 Hold at # -100-73 for atleast 3 hours363AValues shown are minimums or ranges unless
27、 maximum is indicated.B1900 1040 25F 15C.CQuenched in water unless the table specifies another media.DEither Rockwell or Brinell testing is permitted unless thickness is below12 ” in which case Rockwell is preferred.A1082/A1082M 1227.1.1 Bolting ordered to a Type or UNS designation onlyshall be furn
28、ished in the solution treated condition in accor-dance with Table 2 or Table 3. Age hardened bolting ordered toboth a Type and Condition shall meet the requirements of Table3.7.2 Duplex (Ferritic-Austenitic) Stainless Steels:7.2.1 Duplex Stainless (Ferritic-Austenitic) Steels shall befurnished in th
29、e solution-annealed condition as noted in Table4.8. Mechanical Properties8.1 Samples taken from product (see the section in Speci-fication A962/A962M titled “Mechanical Properties”) shallconform to the mechanical properties of Tables 2-4.8.2 Age Hardened Material shall be capable of meeting therequi
30、rements prescribed in Table 3. Impact testing is requiredwhen S1 is invoked in the purchase order or contract.8.3 Number of Tests:8.3.1 Bolting MaterialSee 8.4 for hardness testing of bar.See the section in Specification A962/A962M titled “Numberof Tests” for all other tests except those covered in
31、8.3.2.8.3.2 Full Size FastenersHeaded fasteners 112 in. 37mm body diameter and smaller, with a body length three timesthe diameter or longer and a required maximum tensile load of160,000 lb/f 705 kN, produced by upsetting or forging (hot orcold) shall be subjected to full size testing. The testing s
32、hall bein addition to the tensile testing specified in 8.3.1. The lot sizeshall be as shown in Specification A962/A962M (see thesection titled Number of Tests). Failure shall occur in the bodyor threaded section with no failure, or indications of failure,such as cracks, at the junction of the head a
33、nd shank. Wedgetensile testing is not required for flat countersunk head orsocket button products.8.4 Hardness Test:8.4.1 Bars 2 in. 50 mm and OverOne test on eachmill-treated length.8.4.2 Bars Under 2 in. 50 mmOne test on at least 10 %of the mill treated lengths.9. Nuts9.1 Nuts made from the grades
34、 listed in this specificationshall be furnished when specified in the purchase order. Themechanical test requirements of Section 8 apply in addition toTABLE 3 Age Hardening Heat Treatment and Mechanical Property Requirements for PH GradesAType ConditionSuggested Hardeningand/or AgingTemperatures, Ti
35、meat Temperature,and Quench MediaF CB,C,D,EMaximumThicknessinch mminclusiveMechanical PropertiesTensileStrengthksi MPAYieldStrengthksi MPAElongationin 2”50 mmor 4D%Reductionof Area,%HardnessFImpactFt-lbf JRockwell,HRCBrinell630 H900 900 480, 1 hour 8 190 1310 170 1170 10 35 40 388 630 H925 925 495,
36、4 hours 8 170 1170 155 1070 10 38 38 375 5 6.8630 H1025 1025 550, 4 hours 8 155 1070 145 1000 12 45 35 331 15 20630 H1075 1075 580, 4 hours 8 145 1000 125 860 13 45 32 311 20 27630 H1100 1100 595, 4 hours 8 140 965 115 795 14 45 31 302 25 34630 H1150 1150 620, 4 hours 8 135 930 105 725 16 50 28 277
37、30 41630 H1150D 1150 620 for 4 hrs., air cool plus1150 620 for 4 hrs., air cool8 125 860 105 725 16 50 24-33 255-311 30 41630 H1150M 1400 760 for 2 hrs., air cool plus1150 620 for 4 hrs., air cool8 115 795 75 520 18 55 24 255 55 75631 RH950 1750 955 for 10 min. to 1 h,rapidly cool to room temperatur
38、e.Cool within 24 hrs. to -100 10-75 5, hold 8 hrs. min. Warmin air to room temperature. Heatto 950 510 hold 1 h, air cool.4 185 1280 150 1030 6 10 41 388 631 TH1050 1400 760 for 90 min. Cool to 555153within1h,hold12 hmin., heat to 1050 565, hold for90 min., air cool6 170 1170 140 965 6 25 38 352 632
39、 RH950 Same as Type 631 4 200 1380 175 1210 7 25 44 415 632 TH1050 Same as Type 631 6 180 1240 160 1100 8 25 38 375 634 H1000 1750 955 for 10 min. to 1 h,water quench. Cool to -100 75min., hold 3 hrs. min. Temper at1000 540 hold for 3 h min, aircool. 170 1170 155 1070 12 25 37 341 635 H950 950 510,1
40、2 h 190 1310 170 1170 8 25 39 363 635 H1000 1000 540,12 h 180 1240 160 1100 8 30 37 352 635 H1050 1050 565,12 h 170 1170 150 1035 10 40 35 331 AValues shown are minimums or ranges unless maximum is indicated.B 25F 15CCTemperatures are suggested and may be varied to obtain the required tensile proper
41、ties.DTime refers to the minimum time the material is at temperature and may be extended to obtain required ductility properties.EQuenching shall be accomplished using air or gas cooling unless the table specifies another media.FEither Rockwell or Brinell testing is permitted unless thickness is bel
42、ow12 ” in which case Rockwell is preferred.A1082/A1082M 123requirements specified in the purchase order or contract.Hardness testing shall be done following the completion of allproduction heat treatment operations. See S5 for proof loadtesting and S6 for cross-sectional hardness testing.10. Certifi
43、cation10.1 Certification is required. In addition to the require-ments of A962/A962M (see the section in A962/A962M titled“Certification”), the report shall include results of the chemicalanalysis, mechanical tests and state the method of heat treat-ment employed.11. Product Marking11.1 See A962/A96
44、2M. The grade symbol shall be asshown in Table 5.12. Keywords12.1 age-hardening stainless steel; boltsstainless steel; du-plex stainless steel; fastenersstainless steel; high strengthstainless steels; marking; nuts; precipitation hardening stainlesssteel; stainless steel bars; stainless steel fasten
45、ersTABLE 4 Heat Treatment and Mechanical Property Requirements for Duplex GradesAUNSDesignationSolutionTemperature,F CB,CSize RangeMechanical PropertiesTensileStrength,ksi MPAYieldStrength,ksi MPAElongation in 2”50 mm or 4D%HardnessDRockwell, HRCmaximumBrinell,maximumS31100 1900 1040 90 620 65 450 2
46、0 30 290S31260 1870 to 20101020 to 1100 100 690 70 485 20 31 297S31803 1900 1040 90 620 65 450 25 30 290S32101 1870 1020 94 650 65 450 30 30 290S32202 1800 to 1975980 to 1080 94 650 65 450 30 30 290S32205 1900 1040 95 655 65 450 25 30 290S32304 1800 980 90 620 65 450 18 32 302S32506 1870 20501020 11
47、20 90620 65 450 18 32 302S32550 1900 1040 110760 80 550 15 31 297S32750 1880 20601025 11252 in. and under 116800 80 550 15 33 310S32760 2010 1100 2 in. 110 760 75 515 15 33 310S32900 1750 955 90 620 70 485 15 30 290S32906 1830 to 21001000 to 1150 109 750 80 550 25 33 310AValues shown are minimums or
48、 ranges unless maximum is indicated.B 25F 15C.CQuenched in water.DEither Rockwell or Brinell testing is permitted unless thickness is below12 ” in which case Rockwell is preferred.A1082/A1082M 124SUPPLEMENTARY REQUIREMENTSThese requirements shall not apply unless specified in the order and in the Ordering Information,in which event the specified tests shall be made before shipment of the product.S1. Charpy Impact TestsS1.1 Charpy impact tests shall be run on samples represen-tative of age hardened ma
