A0194_A0194M-06高温和高压设备用碳素钢与合金钢螺栓和螺母的规格.pdf
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1、Designation:A 194/A 194M 06Endorsed byManufacturers Standardization Societyof the Valve and Fittings IndustryUsed in USNRC-RDT StandardsStandard Specification forCarbon and Alloy Steel Nuts for Bolts for High Pressure orHigh Temperature Service,or Both1This standard is issued under the fixed designa
2、tionA 194/A 194M;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.A superscript epsilon(e)indicates an editorial change since the last revision or
3、 reapproval.This standard has been approved for use by agencies of the Department of Defense.1.Scope*1.1 This specification2covers a variety of carbon,alloy,andmartensitic stainless steel nuts in the size range14through 4in.and metric M6 through M100 nominal.It also coversaustenitic stainless steel
4、nuts in the size range14in.and M6nominal and above.These nuts are intended for high-pressureor high-temperature service,or both.Grade substitutions with-out the purchasers permission are not allowed.1.2 Bars from which the nuts are made shall be hot-wrought.The material may be further processed by c
5、enterless grindingor by cold drawing.Austenitic stainless steel may be solutionannealed or annealed and strain-hardened.When annealed andstrain hardened austenitic stainless steel is ordered in accor-dance with Supplementary Requirement S1,the purchasershould take special care to ensure that 8.2.2,S
6、upplementaryRequirement S1,and Appendix X1 are thoroughly understood.1.3 Supplementary requirements(S1 through S6)of anoptional nature are provided.These shall apply only whenspecified in the inquiry,contract,and order.1.4 This specification is expressed in both inch-pound unitsand in SI units.Howev
7、er,unless the order specifies theapplicable“M”specification designation(SI units),the mate-rial shall be furnished to inch-pound units.1.5 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 st
8、ated in eachsystem are not exact 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 153/A 153M Specification for Zinc Coating(Hot-Dip)onIron and
9、 Steel HardwareA 276 Specification for Stainless Steel Bars and ShapesA 320/A 320M Specification for Alloy-Steel and StainlessSteel Bolting Materials for Low-Temperature ServiceA 370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA 962/A 962M Specification for Common Requirement
10、sfor Steel Fasteners or Fastener Materials,or Both,Intendedfor Use at Any Temperature from Cryogenic to the CreepRangeB 633 Specification for Electrodeposited Coatings of Zincon Iron and SteelB 695 Specification for Coatings of Zinc MechanicallyDeposited on Iron and SteelB 696 Specification for Coat
11、ings of Cadmium MechanicallyDepositedB 766 Specification for Electrodeposited Coatings of Cad-miumE 112 Test Methods for Determining Average Grain Size2.2American National Standards:4B 1.1 Unified Screw ThreadsB 1.2 Gages and Gaging for Unified Inch Screw ThreadsB 1.13M Metric Screw ThreadsB 18.2.2
12、Square and Hex NutsB 18.2.4.6M Metric Heavy Hex Nuts3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 Austenitic GradesAll grades with a prefix of“8”or“9”.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the di
13、rect responsibility of SubcommitteeA01.22 on Steel Forgings and Wrought Fittings for Piping Applications and BoltingMaterials for Piping and Special Purpose Applications.Current edition approved March 15,2006.Published April 2006.Originallyapproved in 1936.Last previous edition approved in 2005 as A
14、 194/A 194M05b.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-194 in Section 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
15、,refer to the standards Document Summary page onthe ASTM website.4Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,Wes
16、t Conshohocken,PA 19428-2959,United States.3.1.2 Ferritic GradesGrades 1,2,2H,2HM,3,4,6,6F,7,7M,and 16.3.1.3 Lot:3.1.3.1 Unless otherwise specified(see 3.1.3.2),a lot is thequantity of nuts of a single nominal size and grade produced bythe same manufacturing process.3.1.3.2 When Supplementary Requir
17、ement S5 is invoked onthe purchase order,the following definitions of a lot shallapply:For Grade 8 NutsThe quantity of all the nuts of a singlenominal diameter and grade made from the same heat of steeland made by the same manufacturing process.For All Other Grade Nuts(see 8.2 and 8.1.2.1)All the nu
18、tsof a single nominal diameter and grade made from the sameheat number and heat treated in the same batch if batch-typeheat treating equipment is used or heat treated in the samecontinuous run of not more than 8 h under the same conditionsif continuous-type heat treating equipment is used.3.1.4 Type
19、3.1.4.1 For Grade 8 NutsVariations within the gradedesignated by a letter and differentiated by chemistry and bymanufacturing process.3.1.4.2 For Grade 6 NutsVariations within the gradedesignated by the letter F as differentiated by chemical addi-tions made for machineability.3.1.5 SeriesThe dimensi
20、onal relationship and geometryof the nuts as described in ANSI B 18.2.2 or B 18.2.4.6M.4.Ordering Information4.1 The inquiry and order for material under this specifica-tion shall include the following as required to describe thematerial adequately:4.1.1 Specification designation,year date,and grade
21、,issuedate and revision letter,4.1.2 Quantity,number of pieces,4.1.3 Dimensions(see Section 9),4.1.4 Options in accordance with 8.2.2.1,9.1,9.2,10.3,and12,and4.1.5 Supplementary Requirements,if any.4.2 CoatingsCoatings are prohibited unless specified bythe purchaser.Nuts plated with cadmium or zinc
22、shall bemarked as stated in 13.2.When coated nuts are ordered,thepurchaser should take special care to ensure that Appendix X2is thoroughly understood.It is the purchasers responsibility tospecify in the purchase order all information required by thecoating facility.Examples of such information may
23、include,but are not limited to,the following:4.2.1 Reference to the appropriate coating specification:Specifications B 766,B 696,A 153/A 153M,B 695,B 633,orother specifications as agreed upon by the purchaser andmanufacturer.4.2.2 Requirements for coating thickness and local or batchaverage thicknes
24、s measurement,or both.4.2.3 Requirements for selective plating or coating or modi-fication of dimensions to accommodate coating.4.2.4 Requirements for hydrogen embrittlement relief.4.3 See Supplementary Requirement S3 for nuts to be usedin low temperature applications(SpecificationA 320/A 320M).5.Co
25、mmon Requirements5.1 Material and fasteners supplied to this specification 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
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- A0194_A0194M 06 高温 高压 备用 碳素钢 合金钢 螺栓 螺母 规格
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