1、Designation: F593 13a1Standard Specification forStainless Steel Bolts, Hex Cap Screws, and Studs1This standard is issued under the fixed designation F593; the number immediately following the designation indicates the year of originaladoption or, in the case of revision, the year of last revision.An
2、umber in parentheses indicates the year of last reapproval.Asuperscriptepsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1NOTEThe equation in Table 4 was editorially corrected in August
3、 2016.1. Scope*1.1 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 corrosionresistance.1.2 Seven groups of stainle
4、ss steel alloys are covered,including thirteen 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 workedC4 430E(CW) cold workedC5 410F(H) hardened
5、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.CSizes 0.75 in. and larger may be hot worked and so
6、lution annealed, provided thebolts comply with the cold worked (CW) mechanical property requirements.DWhen approved by the purchaser,Alloys 303, 303Se, or XM1 may be furnished.EWhen approved by the purchaser, Alloy 430F may be furnished.FWhen approved by the purchaser, Alloys 416 or 416Se may be fur
7、nished.1.3 Supplementary requirements of 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 Specifi
8、cationF594. Unless otherwise specified, all nuts used on thesefasteners shall conform to the requirements of SpecificationF594, 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 externallyt
9、hreaded fastener.1.5 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.6 This standard does not purport to address all of thesafety conce
10、rns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A262 Practices for Detecting Susceptibil
11、ity to IntergranularAttack in Austenitic Stainless SteelsA276 Specification for Stainless Steel Bars and ShapesA342/A342M Test Methods for Permeability of WeaklyMagnetic MaterialsA380 Practice for Cleaning, Descaling, and Passivation ofStainless Steel Parts, Equipment, and SystemsA484/A484M Specific
12、ation for General Requirements forStainless Steel Bars, Billets, and ForgingsA493 Specification for Stainless Steel Wire and Wire Rodsfor Cold Heading and Cold ForgingA555/A555M Specification for General Requirements forStainless Steel Wire and Wire RodsA564/A564M Specification for Hot-Rolled and Co
13、ld-Finished Age-Hardening Stainless Steel Bars and ShapesA582/A582M Specification for Free-Machining StainlessSteel BarsA751 Test Methods, Practices, and Terminology for Chemi-cal Analysis of Steel ProductsA967 Specification for Chemical Passivation Treatments for1This specification is under the jur
14、isdiction of ASTM Committee F16 onFasteners and is the direct responsibility of Subcommittee F16.04 on NonferrousFasteners.Current edition approved Dec. 1, 2013. Published January 2014. Originallyapproved in 1978. Last previous edition approved in 2013 as F593 13. DOI:10.1520/F0593-13AE01.2For refer
15、enced 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 website.*A Summary of Changes section appears at the end of this standardCopyri
16、ght ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1Stainless Steel PartsD3951 Practice for Commercial PackagingE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsF594 Specification for Stainless S
17、teel NutsF606 Test Methods for Determining the Mechanical Proper-ties of Externally and Internally Threaded Fasteners,Washers, and Rivets (Metric) F0606_F0606MF1470 Practice for Fastener Sampling for Specified Me-chanical Properties and Performance Inspection2.2 ASME Standards:3B1.1 Unified Inch Scr
18、ew ThreadsB18.2.1 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 Name of item (bolt, hex cap screw, stud,
19、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 requirements:3.2.1 Forming (see 4.1.2),3.2.2 Rolled
20、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 through S8), and3.2.9 ASTM specification and y
21、ear 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 3.00in., Alloy Group 1, Condition CW, Furnish Test Report, SupplementaryRequirement S3.4. Manufacture4.1 Manufacture:4.1.1 Specifications A276, A
22、493, A564/A564M, and A582/A582M are noted for information only as suitable sources ofmaterial for the manufacture of bolts, hex cap screws, and studsto this specification.4.1.2 FormingUnless otherwise specified, the fastenersshall be cold formed, hot formed, or machined from suitablematerial at the
23、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 ofthe optional conditions:Alloy GroupCondition Fur
24、nished 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 Headed and rolled from annealed stock and then
25、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) minimum.HT Hardened and tempered at 525F (274C) minim
26、um.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 AWhen Condition A is specified, theaustenitic allo
27、ys 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 properties.5.1.2 Condition CWWhen Condition CW is speci
28、fied, 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 annealed in accordance with 5.1.1after all cold wor
29、king (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 to provide the specifiedproperties.5.2.2 Conditio
30、n 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, theferritic alloys shall be annealed in accordance wi
31、th 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 andtempered by heating to 1850 6 50F (1010 6 28C)
32、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.3Available from Global Engineering Documents, 15 Inverness Way, EastEnglewood, CO 80112-5704, http:/.F593 1
33、3a125.3.2 Condition HTWhen Condition HT is specified, theMartensitic 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 leas
34、t 1 h and air cooled to provide the specifiedproperties.5.4 Alloy 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 AHPreci
35、pitation Hardening Alloy 630shall be solution annealed and aged 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.6. Chemical Comp
36、osition6.1 Alloy GroupsIt is the intent of this specification 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,
37、instead of an alloy group number, as permitted in 6.2.2.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 be furnished.BWhen approved by the purchaser, Alloy 430F may be furnished.CWhen ap
38、proved by the purchaser, Alloys 416 or 416Se may be furnished.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 manufa
39、cturer as required by hismethod of fastener fabrication 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
40、alloy.6.2.2 Ordering by Specific AlloyWhen ordered by 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
41、one fullymanufactured finished fastener representing each 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 A484/A484M and A555/A555M.6.3.2 In the e
42、vent of discrepancy, a referee chemical analy-sis 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 a
43、nd condition andTABLE 1 Chemical RequirementsAlloyGroupUNSDesigna-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 S
44、30323 303 Se 0.15 2.00 0.20 0.060 1.00 17.0 to 19.0 8.0 to 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 1
45、9.0 10.5 to 13.0 1.00 . . . . . .1 S38400 384 0.08 2.00 0.045 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 . . .
46、. . .1 S30433 302HQ 0.03 2.00 0.045 0.030 1.00 17.0 to 19.0 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
47、.045 0.030 1.00 17.0 to 19.0 9.0 to 12.0 . . . . . . Ti 5 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 10CminFerritic Alloys44S43000S43020430430F0.120.121.001.250.0400.0600.0300.15 min1.001.0016.0 to 18.016.0 to 18.0. .0.60 maxA.Martensitic Alloys555S41000S
48、41600S41623410416416Se0.150.150.151.001.251.250.0400.0600.0600.0300.15 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 1.0
49、0 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.F593 13a13TABLE 2 Mechanical Property RequirementsAStain-less Al-loy GroupConditionBAlloy MechanicalProperty MarkingNominalDiameter,in.Full-Size Tests Machined Specimen TestsTensileStrengthksiCYieldStrength,ksiD,CRockwellHardnessTensileStrengthksiCYieldStrength,ksiD,CElon-gationin 4 D,%Austenitic Alloys3AF F593A14 to 112, incl 65 to 85 20 B85 max 60 20 4014A F593B14 to 112, i
