1、Designation:A325M14Standard Specification forStructural Bolts,Steel,Heat Treated 830 MPa MinimumTensile Strength(Metric)1This standard is issued under the fixed designation A325M;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the ye
2、ar of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification2covers two types of quenched andtempered,steel,metric heavy hex structural bolts having aminimum
3、tensile strength of 830 MPa(Note 1).1.2 The bolts are intended for use in structural connections.These connections are comparable to those covered under therequirements of the Specification for Structural Joints UsingHigh-Strength Bolts,approved by the Research Council onStructural Connections;endor
4、sed by the American Institute ofSteel Construction and by the Industrial Fastener Institute.1.3 The bolts are furnished in sizes M12 to M36 inclusive.They are designated by type denoting chemical composition asfollows:1.3.1 Type 1Medium-carbon,carbon boron,medium car-bon alloy,or alloy boron steel.1
5、.3.2 Type 2Withdrawn in 2003.1.3.3 Type 3Weathering Steel.1.4 This specification is applicable to metric heavy hex,structural bolts only.1.5 Terms used in this specification are defined in Termi-nology F1789.1.6 The values stated in SI units are to be regarded asstandard.No other units of measuremen
6、t are included in thisstandard.NOTE1This specification is the metric companion to the inch poundSpecification A325.1.7 The following safety hazard caveat pertains only to thetest methods portion,Section 10,of this specification.Thisstandard does not purport to address all of the safety concerns,if a
7、ny,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2.Referenced Documents2.1 ASTM Standards:3A153/A153M Specification for Zinc Coating(Hot-Dip)onIr
8、on and Steel HardwareA563M Specification for Carbon andAlloy Steel Nuts(Met-ric)A751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsB695 Specification for Coatings of Zinc Mechanically De-posited on Iron and SteelD3951 Practice for Commercial PackagingF436M Specificat
9、ion for Hardened Steel Washers(Metric)F606M Test Methods for Determining the Mechanical Prop-erties of Externally and Internally Threaded Fasteners,Washers,and Rivets(Metric)F788/F788M Specification for Surface Discontinuities ofBolts,Screws,and Studs,Inch and Metric SeriesF959M Specification for Co
10、mpressible-Washer-Type DirectTension Indicators for Use With Structural Fasteners(Metric)F1136M Specification for Zinc/Aluminum Corrosion Pro-tective Coatings for Fasteners(Metric)(Withdrawn 2011)4F1470 Practice for Fastener Sampling for Specified Me-chanical Properties and Performance InspectionF17
11、89 Terminology for F16 Mechanical FastenersG101 Guide for Estimating the Atmospheric Corrosion Re-sistance of Low-Alloy Steels2.2 ASME Standards:5B 1.13M Metric Screw ThreadsB 18.2.3.7M Metric Heavy Hex Structural Bolts1This specification is under the jurisdiction of ASTM Committee F16 onFasteners a
12、nd is the direct responsibility of Subcommittee F16.02 on Steel Bolts,Nuts,Rivets and Washers.Current edition approved Sept.1,2014.Published September 2014.Originallyapproved in 1979.Last previous edition approved in 2013 as A325M 13.DOI:10.1520/A0325M-14.2For ASME Boiler and Pressure Vessel Code ap
13、plications,see related Specifi-cation SA-325M 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,refer to the standards Document Summary page onthe ASTM w
14、ebsite.4The last approved version of this historical standard is referenced onwww.astm.org.5Available from American Society of Mechanical Engineers(ASME),ASMEInternational Headquarters,Three Park Ave.,New York,NY 10016-5990,http:/www.asme.org.*A Summary of Changes section appears at the end of this
15、standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 B 18.18.3M Inspection and Quality Assurance for SpecialPurpose FastenersB 18.24 Part Identifying Number(PIN)Code System Stan-dard for B18 Fastener Products2.3 RCSC Standard:6Specific
16、ation for Structural Joints Using High-StrengthBolts3.Ordering Information3.1 Orders for heavy hex structural bolts under this speci-fication shall include the following:3.1.1 Quantity(number of pieces of bolts and accessories).3.1.2 Size,including nominal bolt diameter,thread pitchand bolt length.3.1.3 Name of product,heavy hex structural bolts.3.1.4 When bolts threaded full length are required,Supple-mentary Requirement S1 shall be specified.3.1.5 Type of bolt;Type 1 or Type 3.When the type is