1、Designation: F 593 02e2Standard Specification forStainless Steel Bolts, Hex Cap Screws, and Studs1This standard is issued under the fixed designation F 593; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、 A number in parentheses indicates the year of last reapproval. Asuperscript 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 Defense.e1NOTETable 2 was editorially corrected in February 2004.e2NOT
3、ESection 4.2 was editorially corrected in October 2004.1. Scope1.1 This specification covers the requirements for stainlesssteel bolts, hex cap screws, and studs 0.25 to 1.50 in., inclusive,in nominal diameter in a number of alloys in common use andintended for service applications requiring general
4、 corrosionresistance.1.2 Seven groups of stainless steel alloys are covered,including twelve austenitic, two ferritic, four martensitic, andone precipitation hardening.Group AlloysAConditionB1 304, 305, 384, 304 L, (CW) cold workedC18-9LW, 302HQD2 316, 316 L (CW) cold workedC3 321, 347 (CW) cold wor
5、kedC4 430E(CW) cold workedC5 410F(H) hardened and tempered6 431 (H) hardened and tempered7 630 (AH) age hardenedAUnless otherwise specified on the inquiry and order, the choice of an alloy fromwithin a group shall be at the discretion of the fastener manufacturer (see 6.1).BSee 4.2 for options.CSize
6、s 0.75 in. and larger may be hot worked and solution annealed.DWhen approved by the purchaser, Alloys 303, 303Se, or XM1 may befurnished.EWhen approved by the purchaser, Alloy 430F may be furnished.FWhen approved by the purchaser, Alloys 416 or 416Se may be furnished.1.3 Supplementary requirements o
7、f an optional nature areprovided, applicable only when agreed upon between themanufacturer and the purchaser at the time of the inquiry andorder.1.4 Suitable nuts for use with bolts, hex cap screws, andstuds included in this specification are covered by SpecificationF 594. Unless otherwise specified
8、, all nuts used on thesefasteners shall conform to the requirements of SpecificationF 594, shall be of the same alloy group, and shall have aspecified minimum proof stress equal to or greater than thespecified minimum full-size tensile strength of the externallythreaded fastener.2. Referenced Docume
9、nts2.1 ASTM Standards:2A 262 Practices for Detecting Susceptibility to Intergranu-lar Attack in Austenitic Stainless SteelsA 276 Specification for Stainless Steel Bars and ShapesA 342/A 342M Test Methods for Permeability of FeeblyMagnetic MaterialsA 380 Practice for Cleaning, Descaling, and Passivat
10、ion ofStainless Steel Parts, Equipment, and SystemsA 484/A 484M Specification for General Requirements forStainless Steel Bars, Billets, and ForgingsA 493 Specification for Stainless Steel Wire and Wire Rodsfor Cold Heading and Cold ForgingA 555/A 555M Specification for General Requirements forStain
11、less Steel Wire and Wire RodsA 564/A 564M Specification for Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel Bars and ShapesA 582/A 582M Specification for Free-Machining StainlessSteel BarsA 751 Test Methods, Practices, and Terminology forChemical Analysis of Steel ProductsA 967 Specificat
12、ion for Chemical Passivation Treatmentsfor Stainless Steel PartsD 3951 Practice for Commercial PackagingE 29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsF 594 Specification for Stainless Steel NutsF 606 Test Methods for Determining the Mechanical Pro
13、p-erties of Externally and Internally Threaded Fasteners,Washers, and RivetsF 1470 Guide for Fastener Sampling for Specified Me-chanical Properties and Performance Inspection2.2 ASME Standards:3B1.1 Unified Inch Screw Threads1This specification is under the jurisdiction of ASTM Committee F16 onFaste
14、ners and is the direct responsibility of Subcommittee F16.04 on NonferrousFasteners.Current edition approved April 10, 2002. Published May 2002. Originallypublished as F 593 78. Last previous edition F 593 01.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Custom
15、er Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from Global Engineering Documents, 15 Inverness Way, EastEnglewood, CO 80112.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C70
16、0, West Conshohocken, PA 19428-2959, United States.B18.2.1 Square and Hex Bolts and Screws, Including HexCap Screws3. Ordering Information3.1 Orders for bolts, hex cap screws, and studs under thisspecification shall include the following:3.1.1 Quantity (number of pieces of each item and size),3.1.2
17、Name of item (bolt, hex cap screw, stud, etc.),3.1.3 Size (nominal diameter, threads per inch, length; seeSection 9),3.1.4 Alloy group number (see 6.1), and3.1.5 Condition (see 4.2).3.2 Orders for bolts, hex cap screws, and studs under thisspecification may include the following optional requirement
18、s:3.2.1 Forming (see 4.1.2),3.2.2 Rolled or cut threads (see 4.1.3),3.2.3 Composition (see 6.2),3.2.4 Corrosion Resistance (see 8.1),3.2.5 Finish (see 10.3),3.2.6 Rejection (see 16.1), and3.2.7 Test report (see 17.2).3.2.8 Supplementary requirements, if any, to be specified onthe order (see S1 throu
19、gh S8), and3.2.9 ASTM specification and year of issue. When year ofissue is not specified, fasteners shall be furnished to the latestissue.NOTE 1Example 10 000 pieces, Hex Cap Screw, 0.250 in. 20 3 3.00in., Alloy Group 1, Condition CW, Furnish Test Report, SupplementaryRequirement S3.4. Manufacture4
20、.1 Manufacture:4.1.1 Specifications A 276, A 493, A 564/A 564M, andA 582/A 582M are noted for information only as suitablesources of material for the manufacture of bolts, hex capscrews, and studs to this specification.4.1.2 FormingUnless otherwise specified, the fastenersshall be cold formed, hot f
21、ormed, or machined from suitablematerial at the option of the manufacturer.4.1.3 ThreadsUnless otherwise specified, the threads shallbe rolled or cut at the option of the manufacturer.4.2 ConditionThe fasteners shall be furnished in thefollowing conditions, unless specified to be furnished in one of
22、the optional conditions:Alloy GroupCondition Furnished UnlessOtherwise SpecifiedOptional Conditions (mustbe specified)1, 2, 3 CW AF, A, SH4C5HHT6H7 AH noneA Machined from annealed or solution-annealed stock thus retaining theproperties of the original material; or hot-formed and solution annealed.AF
23、 Headed and rolled from annealed stock and then reannealed.AH Solution-annealed and age-hardened after forming.CW Headed and rolled from annealed stock thus acquiring a degree of coldwork. Sizes 0.75 in. and larger may be hot-worked and solution-annealed.H Hardened and tempered at 1050F (565C) minim
24、um.HT Hardened and tempered at 525F (274C) minimum.SH Machined from strain-hardened stock or cold-worked to develop thespecific properties.5. Heat Treatment5.1 Alloy Groups 1, 2, and 3 (Austenitic Alloys 303, 303Se,304, 304 L, 305, 316, 316 L, 321, 347, 384, XM1, 18-9LW, and302HQ):5.1.1 Condition AW
25、hen Condition A is specified, theaustenitic alloys shall be heated to 1900 6 50F (1038 628C), at which time the chromium carbide will go into thesolution, be held for a sufficient time, and then be cooled at arate sufficient to prevent precipitation of the carbide and toprovide the specified propert
26、ies.5.1.2 Condition CWWhen Condition CW is specified, theaustenitic alloys shall be annealed in accordance with 5.1.1,generally by the raw material manufacturer and then coldworked to develop the specified properties.5.1.3 Condition AFWhen Condition AF is specified, theaustenitic alloys shall be ann
27、ealed in accordance with 5.1.1after all cold working (including heading and threading) hasbeen completed.5.2 Alloy Group 4 (Ferritic Alloys 430 and 430F):5.2.1 Condition AThe ferritic alloys shall be heated to atemperature of 1450 6 50F (788 6 28C), held for anappropriate time, and then air cooled t
28、o provide the specifiedproperties.5.2.2 Condition CWWhen Condition CW is specified, theferritic alloys shall be annealed in accordance with 5.2.1,generally by the raw material manufacturer and then coldworked to develop the specified properties.5.2.3 Condition AFWhen Condition AF is specified, thefe
29、rritic alloys shall be annealed in accordance with 5.2.1 afterall cold working (including heading and threading) has beencompleted.5.3 Alloy Group 5 (Martensitic Alloys 410, 416, and 416Se):5.3.1 Condition HWhen Condition H is specified, theMartensitic Alloys 410, 416, and 416Se shall be hardened an
30、dtempered by heating to 1850 6 50F (1010 6 28C) sufficientfor austenitization, held for at least12 h and rapid air- oroil-quenched, and then reheating to 1050F (565C) minimumfor at least 1 h and air cooled to provide the specifiedproperties.5.3.2 Condition HTWhen Condition HT is specified, theMarten
31、sitic Alloys 410, 416, and 416Se shall be hardened andtempered by heating to 1850 6 50F (1010 6 28C) sufficientfor austenitization, held for at least12 h and rapid air- oroil-quenched, and then reheating to 525F (274C) minimumfor at least 1 h and air cooled to provide the specifiedproperties.5.4 All
32、oy Group 6 (Martensitic Alloy 431):5.4.1 Conditions H and HTMartensitic Alloy 431 shall behardened and tempered in accordance with 5.3.1 and 5.3.2 asapplicable.5.5 Alloy Group 7 (Precipitation Hardening Alloy 630):5.5.1 Condition AHPrecipitation Hardening Alloy 630shall be solution annealed and aged
33、 by heating to 1900 6 25F(1038 6 14C) for at least12 h and rapid air- or oil-quenchedto 80F (27C) maximum, then reheating to a temperature of1150 6 15F (621 6 8C) for 4 h and air cooled to provide thespecified properties.F59302e226. Chemical Composition6.1 Alloy GroupsIt is the intent of this specif
34、ication thatfasteners shall be ordered by alloy group numbers, whichinclude alloys considered to be chemically equivalent forgeneral purpose use. The alloy groupings are shown as follows.The purchaser has the option of ordering a specific alloy, instead of an alloy group number, as permitted in 6.2.
35、2.Alloy Group Alloys1 304, 304 L, 305, 384, 18-9LW, 302HQA2 316, 316 L3 321, 3474 430B5 410C6 4317 630AWhen approved by the purchaser, Alloys 303, 303Se, or XM1 may befurnished.BWhen approved by the purchaser, Alloy 430F may be furnished.CWhen approved by the purchaser, Alloys 416 or 416Se may be fu
36、rnished.6.2 Chemical Composition Limits:6.2.1 Ordering by Alloy GroupUnless otherwise specifiedon the inquiry and order (see Supplementary Requirement S4),the choice of an alloy from within a group shall be at thediscretion of the fastener manufacturer as required by hismethod of fastener fabricatio
37、n and material availability. Thespecific alloy used by the fastener manufacturer shall be clearlyidentified on any certification required by the order and shallhave a chemical composition conforming to the requirementsof Table 1 for the specific alloy.6.2.2 Ordering by Specific AlloyWhen ordered by
38、a spe-cific alloy number, the fasteners shall conform to the chemicalcomposition limits of Table 1 for the specific alloy.6.3 Product Analysis:6.3.1 When performed, product analysis to determinechemical composition shall be performed on at least one fullymanufactured finished fastener representing e
39、ach lot. Thechemical composition thus determined shall conform to therequirements of Table 1 for the specified alloy or alloy group asappropriate, subject to the Product Analysis Tolerance inSpecifications A 484/A 484M and A 555/A 555M.6.3.2 In the event of discrepancy, a referee chemical analy-sis
40、of samples from each lot shall be made in accordance with14.1.7. Mechanical Properties7.1 The finished fasteners shall meet the applicable me-chanical property and test requirements of Table 2 and Table 3as appropriate for the specified alloy group and condition andshall be tested for conformance to
41、 the mechanical propertyrequirements as specified herein.7.2 Fasteners having a nominal thread diameter-length com-bination as follows:Thread Diameter, in. Thread Length, in.0.75 or lessOver 0.752.25 D or longer3 D or longerand a breaking load of 120 000 lbf (535 kN) or less shall be tested full siz
42、e andshall meet the full-size tensile (minimum and maximum) and yield strength re-quirements in Table 2 for the specified alloy.7.3 Fasteners having a nominal thread diameter-length com-bination in accordance with 7.2 and a breaking load exceeding120 000 lbf (535 kN) shall be tested full-size and sh
43、all meet thefull size tensile (minimum and maximum) and yield strengthproperties in Table 2. When equipment of sufficient capacityfor such tests is not available, or if excessive length of thefasteners makes full-size testing impractical, use of standard orTABLE 1 Chemical RequirementsAlloyGroupUNSD
44、esigna-tionAlloy Composition, % maximum except as shownCarbon Manga-nesePhos-phorusSulfur Silicon Chromium Nickel Copper Molybdenum OthersAustenitic Alloys1 S30300 303 0.15 2.00 0.20 0.15 min 1.00 17.0 to 19.0 8.0 to 10.0 . . . 0.60 maxA.1 S30323 303 Se 0.15 2.00 0.20 0.060 1.00 17.0 to 19.0 8.0 to
45、10.0 . . . . . . Se 0.15 min1 S30400 304 0.08 2.00 0.045 0.030 1.00 18.0 to 20.0 8.0 to 10.5 1.00 . . . . . .1 S30403 304 L 0.03 2.00 0.045 0.030 1.00 18.0 to 20.0 8.0 to 12.0 1.00 . . . . . .1 S30500 305 0.12 2.00 0.045 0.030 1.00 17.0 to 19.0 10.5 to 13.0 1.00 . . . . . .1 S38400 384 0.08 2.00 0.0
46、45 0.030 1.00 15.0 to 17.0 17.0 to 19.0 . . . 0.50 maxA.1 S20300 XM1 0.08 5.0 to 6.5 0.040 0.18 to 0.35 1.00 16.0 to 18.0 5.0 to 6.5 1.75 to 2.25 . . . . . .1 S30430 189LW 0.10 2.00 0.045 0.030 1.00 17.0 to 19.0 8.0 to 10.0 3.0 to 4.0 . . . . . .1 S30433 302HQ 0.03 2.00 0.045 0.030 1.00 17.0 to 19.0
47、 8.0 to 10.0 3.0 to 4.0 . . . . . .2 S31600 316 0.08 2.00 0.045 0.030 1.00 16.0 to 18.0 10.0 to 14.0 . . . 2.00 to 3.00 . . .2 S31603 316 L 0.03 2.00 0.045 0.030 1.00 16.0 to 18.0 10.0 to 14.0 . . . 2.00 to 3.00 . . .3 S32100 321 0.08 2.00 0.045 0.030 1.00 17.0 to 19.0 9.0 to 12.0 . . . . . . Ti 53
48、C min3 S34700 347 0.08 2.00 0.045 0.030 1.00 17.0 to 19.0 9.0 to 13.0 . . . . . . Cb+Ta 10 3 C minFerritic Alloys44S43000S43020430430F0.120.121.001.250.0400.0600.0300.15 min1.001.0016.0 to 18.016.0 to 18.0. .0.60 maxA.Martensitic Alloys555S41000S41600S41623410416416Se0.150.150.151.001.251.250.0400.0
49、600.0600.0300.15 min0.0601.001.001.0011.5 to 13.512.0 to 14.012.0 to 14.0. .0.60 maxASe 0.15 min6 S43100 431 0.20 1.00 0.040 0.030 1.00 15.0 to 17.0 1.25 to 2.50 . . . . . . . . .Precipitation Hardening Alloy7 S17400 630 0.07 1.00 0.040 0.030 1.00 15.0 to 17.5 3.0 to 5.0 3.0 to 5.0 . . . Cb+Ta 0.150.45AAt manufacturers option, determined only when intentionally added.F59302e23round specimens that meet the “machined specimen test tensileproperties” in Table 2 is permitted. In the event of discrepancyor dispute between test resul
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