1、Designation: F3125/F3125M 15aStandard Specification forHigh Strength Structural Bolts, Steel and Alloy Steel, HeatTreated, 120 ksi (830 MPa) and 150 ksi (1040 MPa) MinimumTensile Strength, Inch and Metric Dimensions1This standard is issued under the fixed designation F3125/F3125M; the number immedia
2、tely 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 () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This sp
3、ecification covers chemical, physical and me-chanical requirements for quenched and tempered bolts manu-factured from steel and alloy steel, in inch and metricdimensions, in two strength grades, two types and two styles.1.1.1 This specification is a consolidation and replacementof six ASTM standards
4、, including; A325, A325M, A490,A490M, F1852 and F2280.1.1.2 This consolidated standard is to ensure alignmentbetween standards with the same intended end use and tosimplify the use and maintenance of structural bolt specifica-tions.1.2 Intended Use:1.2.1 Bolts manufactured under this specification a
5、re in-tended for use in structural connections covered in the Speci-fication for Structural Joints Using High-Strength Bolts, asapproved by the Research Council on Structural Connections.1.2.2 Bolts in this specification are furnished in sizes from12 to 1-12 in. inclusive and from M12 to M36 inclusi
6、ve.1.3 Classification:1.3.1 Bolts are designated by grade or property class, whichindicates inch or metric respectively.1.3.2 Bolts are designated by type denoting raw materialchemical composition.1.3.3 Bolts are designated by style denoting Heavy Hexbolts or “Twist-Off” Style assemblies.Grade Min.
7、Strength Type StyleA325 120 ksi 1 3 Heavy Hex HeadA325M 830 MPa 1 3 Heavy Hex HeadF1852 120 ksi 1 3 Twist-OffA490 150 ksi 1 3 Heavy Hex HeadA490M 1040 MPa 1 3 Heavy Hex HeadF2280 150 ksi 1 3 Twist-OffType 1 - 120 ksi (830 MPa) - carbon steel, carbon boron steel, alloy steelor alloy steel with boron
8、additionType 3 - 120 ksi (830 MPa) or 150 ksi (1040 MPa) - weathering steelType 1 - 150 ksi (1040 MPa) - alloy steel or alloy steel with boron addition1.4 Terms used in this specification are defined in F1789.1.5 UnitsThe values stated in either SI units or inch poundunits are to be regarded separat
9、ely as standard. The valuesstated in each system may not be exact equivalents; therefore,each system shall be used independently of the other. Combin-ing values from the two systems may result in non-conformance with the standard.1.6 Table footnotes are requirements. Notes are advisory.1.7 The follo
10、wing safety hazard caveat pertains to the testmethods portion of this specification: This standard does notpurport to address all of the safety concerns, if any, associatedwith its use. It is the responsibility of the user of this standardto establish appropriate safety and health practices anddeter
11、mine the applicability of regulatory limitations prior touse.2. Referenced Documents2.1 ASTM Standards:2A194/A194M Specification for Carbon Steel, Alloy Steel,and Stainless Steel Nuts for Bolts for High Pressure orHigh Temperature Service, or BothA354 Specification for Quenched and Tempered Alloy St
12、eelBolts, Studs, and Other Externally Threaded FastenersA449 Specification for Hex Cap Screws, Bolts and Studs,Steel, Heat Treated, 120/105/90 ksi Minimum TensileStrength, General UseA563 Specification for Carbon and Alloy Steel NutsA563M Specification for Carbon andAlloy Steel Nuts (Met-ric)A751 Te
13、st Methods, Practices, and Terminology for Chemi-cal Analysis of Steel ProductsB695 Specification for Coatings of Zinc Mechanically De-posited on Iron and Steel1This specification is under the jurisdiction of ASTM Committee F16 onFasteners and is the direct responsibility of Subcommittee F16.02 on S
14、teel Bolts,Nuts, Rivets and Washers.Current edition approved Dec. 15, 2015. Published March 2016. Originallypublished in 2015. Last previous edition published in 2015 as F312515. DOI:10.1520/F3125_F3125M15A.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer
15、 Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1E709 Guide for Magnetic Particle Testing
16、E1444/E1444M Practice for Magnetic Particle TestingF436 Specification for Hardened Steel WashersF436M Specification for Hardened Steel Washers (Metric)F606/F606M Test Methods for Determining the MechanicalProperties of Externally and Internally ThreadedFasteners, Washers, Direct Tension Indicators,
17、and RivetsF788 Specification for Surface Discontinuities of Bolts,Screws, and Studs, Inch and Metric SeriesF1136/F1136M Specification for Zinc/Aluminum CorrosionProtective Coatings for FastenersF1470 Practice for Fastener Sampling for Specified Me-chanical Properties and Performance InspectionF1789
18、Terminology for F16 Mechanical FastenersF1940 Test Method for Process Control Verification toPrevent Hydrogen Embrittlement in Plated or CoatedFastenersF2328 Test Method for Determining Decarburization andCarburization in Hardened and Tempered Threaded SteelBolts, Screws, Studs, and NutsF2328M Test
19、Method for Determining Decarburization andCarburization in Hardened and Tempered Threaded SteelBolts, Screws, Studs, and Nuts (Metric)F2329 Specification for Zinc Coating, Hot-Dip, Require-ments for Application to Carbon and Alloy Steel Bolts,Screws, Washers, Nuts, and Special Threaded FastenersF266
20、0 Test Method for Qualifying Coatings for Use onA490 Structural Bolts Relative to Environmental Hydro-gen EmbrittlementF2833 Specification for Corrosion Protective Fastener Coat-ings with Zinc Rich Base Coat and Aluminum Organic/Inorganic TypeG101 Guide for Estimating the Atmospheric Corrosion Re-si
21、stance of Low-Alloy Steels2.2 ASME Standards:3B1.1 Unified Screw ThreadsB1.13M Metric Screw ThreadsB18.18 Quality Assurance for FastenersB18.2.6 Fasteners for Use in Structural ApplicationsB18.2.6M Metric Fasteners for Use in Structural Applica-tions2.3 IFI Standard:4IFI 144 Test Evaluation Procedur
22、es for Coating Qualifica-tion2.4 RCSC Standard:5Specification for Structural Joints Using High-Strength Bolts3. Ordering Information3.1 Orders for bolts under this specification shall include:3.1.1 ASTM designation.3.1.2 Quantity: Number of bolts or assemblies, includingwashers, if required.3.1.3 Si
23、ze: Including nominal bolt diameter and bolt length,and thread pitch if other than standard.3.1.4 Grade: A325, A325M, A490, A490M, F1852 orF2280.3.1.5 Type: Type 1 or Type 3. When Type is not specifiedeither Type 1 or Type 3 may be furnished at the suppliersoption.3.1.6 Style: Heavy Hex or Twist-Off
24、 Style.3.1.7 Coatings or finishes: If other than plain finish, specifythe coating process or finish required, see Annex A1.3.2 Test reports, see Section 14.3.3 Additional details of other assembly components suchas nuts and washers, if required.3.4 Rotational capacity testing of matched sets or asse
25、m-blies in accordance with Annex A2, if required by the pur-chaser.3.5 Heavy Hex bolts may be ordered individually, packagedwith nuts, packaged with nuts and washers, or as assemblies.3.6 Any special observation or inspection requirementsshall be specified at the time of inquiry and at the time of o
26、rder.See Section 13.2.3.7 Any supplementary requirements.3.8 Country of origin requirements, if any.NOTE 1A typical description follows: 1000 pieces34 ” 3” ASTMF312515, Grade A325 heavy hex bolt, Type 1, each with one hardenedASTM F436 Type 1 washer, and one A563 Grade DH heavy hex nut.NOTE 2Bolts a
27、re sometimes detailed with names such as A325 HS,A325 SC, A325 X or A490 N. These names relate to connection designand bolt installation, but do not change the manufacturing requirementsand are preferably not shown on bolt orders.4. Dimensions4.1 Head and Body:4.1.1 Bolts shall conform to the dimens
28、ions specified inTable 1 for Heavy Hex or Twist-Off bolts.4.1.2 The thread length shall not be changed except asprovided in Supplementary Requirement S1 or S2. Otherdimensions shall not be changed except in accordance withSupplementary Requirement S2.4.1.3 Bolts with thread lengths or dimensional re
29、quirementswhich differ from this specification may also be ordered underSpecification A449 or A354. Users should note that A449 andA354 are not exact equivalents to the structural grades in thisspecification.4.2 Threads:4.2.1 Uncoated bolt threads shall be as specified in Table 1.4.2.2 Coated bolts
30、shall have threads meeting Table 1requirements before coating.4.3 The gauging limit for coated bolts shall be verifiedduring manufacture. In case of dispute, a calibrated thread ringgauge of the same size as the oversize limit in AnnexA1 (ClassX tolerance, gauge tolerance plus) shall be used to veri
31、fycompliance. The gauge shall assemble with hand effort follow-ing application of light machine oil to prevent galling anddamage to the gauge. These inspections, when performed toresolve controversy, shall be conducted at the frequencyspecified in the quality provisions of ASME B18.18.3Available fro
32、m American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Two Park Ave., New York, NY 10016-5990, http:/www.asme.org.4Industrial Fasteners Institute (IFI), 6363 Oak Tree Blvd. Independence, OH44131. http:/www.indfast.org5Research Council on Structural Connections (RCSC), htt
33、p:/boltcouncil.orgF3125/F3125M 15a2NOTE 3It is the intent of this specification that coated nuts and boltsassemble freely when ordered together. It is recognized that the batchnature of coating process and the cumulative effect of coating thicknessmay create intermittent assembly problems. Staying w
34、ithin the materiallimits is important for assembly strength. Users are encouraged to use thesmallest nut overtap which permits consistent free assembly.5. Product Marking5.1 At a minimum, all bolts shall be marked as required inTable 1. Marking shall be on the bolt head and may be raisedor depressed
35、 at the manufacturers option. The marking shallbe visible after coating.5.2 Grade and Type marking, and the manufacturers markshall be in separate and distinct locations on the head. Othermarkings, if used, such as private label distributors mark shallalso be separate and distinct.TABLE 1 Dimensions
36、, Threads, Marking, Matching ComponentsInch Metric Inch Metric120 ksi Min Tensile 830 MPa Min Tensile 150 ksi Min Tensile 1040 MPa Min TensileType 1 Type 3 Type 1 Type 3 Type 1 Type 3 Type 1 Type 3Style - Heavy Hex BoltsDimensions, ASMEBB18.2.6 B18.2.6 B18.2.6M B18.2.6M B18.2.6 B18.2.6 B18.2.6M B18.
37、2.6MThread Fit, ASMEBB1.1 UNC 2A B1.1 UNC 2A B1.13M MC 6g B1.13M MC 6g B1.1 UNC 2A B1.1 UNC 2A B1.13M MC 6g B1.13M MC 6gGrade MarkingA,DA325 A325 A325M A325M A490 A490 A490M A490MStyle - Twist-Off BoltsDimensions, ASMEBB18.2.6 B18.2.6FFB18.2.6 B18.2.6FFThread Fit, ASMEBB1.1 UNC 2A B1.1 UNC 2A B1.1 U
38、NC 2A B1.1 UNC 2AGrade MarkingA,DA325TC A325TC A490TC A490TCAlt. MarkingA,CA325 A325FFA490 A490FFRecommended Nut andWasherPlain Nut A563 DH A563 DH3 A563M 10S A563M 10S3 A563 DH A563 DH3 A563M 10S A563M 10S3Suitable AlternativeEDH3, D, C, C3 C3 8S, 8S3, 10S3 8S3 10S3Coated Nut A563 DH A563 DH3 A563M
39、 10S A563M 10S3 A563 DH A563 DH3 A563M 10S A563M 10S3Flat, Bevel orThick Washer if used F436 -1 F436 -3 F436M -1 F436M -3 F436 -1 F436 -3 F436M -1 F436M -3AA325 and A325M bolts lengths up to 4D which are fully threaded but which are not required to be fully threaded by the relevant ASME standard sha
40、ll be marked witha “T”, see Supplementary Requirement S1. Bolts with any other non-standard dimensions, including thread length, shall be marked with an “S”, see SupplementaryRequirement S2.BManufactured to the latest revision at the time of manufacture, UNC for inch series and Metric Coarse (MC) fo
41、r Metric Series.CPreviously used markings may be sold and used indefinitely, bolts must be manufactured to current marking requirements upon initial publication of this standard.DOther distinguishing markings for type 3 are permitted at the manufacturers option.EASTM A194/A194M 2H heavy hex inch nut
42、s may be used in place of A563 DH nuts on type 1 A325, A490, F1852 and F2280 bolts. 2H heavy hex metric nuts may beused in place of A563M 10S nuts on type 1 A325M and A490M bolts. When coated 2H nuts are used in place of DH or 10S nuts, the same requirements of A563, A563M,and this specification, in
43、cluding Annex A1, shall apply. These include, but are not limited to, overtap amount, coating grade, lubrication requirements, and proof load testing.FMetric dimensions and requirements for this style have not been established.TABLE 2 Chemical RequirementsHeat Analysis120 ksi/830 MPa Minimum 150 ksi
44、/1040 MPa MinimumGrade A325, A325M, F1852 Grade A490, A490M, F2280Type 1 Type 3 Type 1 Type 3Carbon or AlloySteelwith or withoutBoronCompositionACompositionBBased onCorrosion IndexCAlloy Steelwith or withoutBoronBased onCorrosion IndexCCarbon 0.30 - 0.52 0.33 - 0.40 0.38 -0.48 0.30 - 0.52 max 0.30 -
45、 0.48A0.30 - 0.53Manganese 0.60 min 0.90 - 1.20 0.70 - 0.90 0.60 min 0.60 min 0.60 minPhosphorus, max 0.035 0.035 0.035 0.035 0.035 0.035Sulfur, max 0.040 0.040 0.040 0.040 0.040 0.040Silicon 0.15 - 0.30 0.15 - .30 0.30 - 0.50BBBBoron 0.003 maxBBB0.003 maxBCopperB0.25 - 0.45 0.20 - 0.40 0.20 - 0.60B
46、0.20 - 0.60NickelB0.25 - 0.45 0.50 - 0.80 0.20DminB0.20DminChromiumB0.45 - 0.65 0.50 - 0.75 0.45 minB0.45 minVanadiumBBBBBBMolybdenumBB0.06 max 0.10DminB0.10DminTitaniumACarbon requirement is 0.35-0.53 for 1-12 in. and M36 diameter bolts.BNot Specified.CSee 6.3.DEither Nickel or Molybdenum must be p
47、resent in the amount specified.F3125/F3125M 15a36. Chemical Composition6.1 120ksi/830MPA Type 1 bolts shall be carbon steel,carbon boron steel, alloy steel or alloy steel with boronaddition at the manufacturers option, conforming to thechemical composition specified in Table 2.6.2 150ksi/1040MPa bol
48、ts Type 1 shall be alloy steel oralloy steel with boron addition at the manufacturers option,conforming to the chemical composition specified in Table 2.Alloy Steel is defined in Terminology F1789.6.3 Type 3 bolts shall be weathering steel and shall conformto the chemical compositions specified in T
49、able 2. Optionally,a chemical composition based on a corrosion index may beused. When qualifying based on the corrosion index the steelshall have a corrosion index of 6 or greater, as calculated fromthe heat analysis, and as described in Guide G101, using thepredictive method based on the data of Larabee and Coburn, orthe predictive method based on the data of Townsend. SeeGuide G101 for methods of estimating the atmospheric corro-sion resistance of low alloy steels.6.4 If performed, product analysis made on finished boltsrepresenting each lot shall be within 1
