1、Designation: F593 13aStandard 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.Anu
2、mber 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.1. Scope*1.1 This specification covers the requirements for stain
3、lesssteel 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 stainless steel alloys are covered,including thirteen austenitic, two ferritic
4、, 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 and tempered6 431 (H) hardened and tempered7 630 (AH) age hardenedAUnle
5、ss 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 solution annealed, provided thebolts comply with the cold worked (CW) mec
6、hanical 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 furnished.1.3 Supplementary requirements of an optional nature areprovided
7、, 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 SpecificationF594. Unless otherwise specified, all nuts used on thesefasteners
8、 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 externallythreaded fastener.1.5 The values stated in inch-pound units are to be re
9、gardedas 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 concerns, if any, associated with its use. It is theresponsibility of the us
10、er 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 Susceptibility to IntergranularAttack in Austenitic Stainless SteelsA276 Specifica
11、tion for Stainless Steel Bars and ShapesA342/A342M Test Methods for Permeability of FeeblyMagnetic MaterialsA380 Practice for Cleaning, Descaling, and Passivation ofStainless Steel Parts, Equipment, and SystemsA484/A484M Specification for General Requirements forStainless Steel Bars, Billets, and Fo
12、rgingsA493 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 Cold-Finished Age-Hardening Stainless Steel Bars and ShapesA582/A582M Spe
13、cification for Free-Machining StainlessSteel BarsA751 Test Methods, Practices, and Terminology for Chemi-cal Analysis of Steel ProductsA967 Specification for Chemical Passivation Treatments forStainless Steel PartsD3951 Practice for Commercial PackagingE29 Practice for Using Significant Digits in Te
14、st Data toDetermine Conformance with SpecificationsF594 Specification for Stainless Steel Nuts1This specification is under the jurisdiction of ASTM Committee F16 onFasteners and is the direct responsibility of Subcommittee F16.04 on NonferrousFasteners.Current edition approved Dec. 1, 2013. Publishe
15、d January 2014. Originallyapproved in 1978. Last previous edition approved in 2013 as F593 13. DOI:10.1520/F0593-13A.2For 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
16、 the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1F606 Test Methods for Determining the Mechanical Proper-ties of E
17、xternally and Internally Threaded Fasteners,Washers, Direct Tension Indicators, and RivetsF1470 Practice for Fastener Sampling for Specified Me-chanical Properties and Performance Inspection2.2 ASME Standards:3B1.1 Unified Inch Screw ThreadsB18.2.1 Square and Hex Bolts and Screws, Including HexCap S
18、crews3. 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, etc.),3.1.3 Size (nominal diameter, threads per inch, length; seeSect
19、ion 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 or cut threads (see 4.1.3),3.2.3 Composition (see 6.2),3.2.4 Corrosio
20、n 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 year of issue. When year ofissue is not specified, fasteners shall be
21、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, A493, A564/A564M, and A582/A582M are noted for information only as sui
22、table 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 option of the manufacturer.4.1.3 ThreadsUnless otherwise specified, t
23、he 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 Furnished UnlessOtherwise SpecifiedOptional Conditions (mustbe specified
24、)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 reannealed.AH Solution-annealed and age-hardened after forming.CW Hea
25、ded 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) minimum.SH Machined from strain-hardened stock or cold-worked to develop t
26、hespecific 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 alloys shall be heated to 1900 6 50F (1038 628C), at which time the chrom
27、ium 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 specified, theaustenitic alloys shall be annealed in accordance with 5.1.1
28、,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 working (including heading and threading) hasbeen completed.5.2 Alloy Gr
29、oup 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 Condition CWWhen Condition CW is specified, theferritic alloys shall be annea
30、led 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 with 5.2.1 afterall cold working (including heading and threading) has
31、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) sufficientfor austenitization, held for at least12 h and rapid air- o
32、roil-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, theMartensitic Alloys 410, 416, and 416Se shall be hardened andtempered by heating to 1850 6 50F (1010 6 28C) sufficientfor au
33、stenitization, held for at least12 h and rapid air- or3Available from Global Engineering Documents, 15 Inverness Way, EastEnglewood, CO 80112-5704, http:/.F593 13a2oil-quenched, and then reheating to 525F (274C) minimumfor at least 1 h and air cooled to provide the specifiedproperties.5.4 Alloy Grou
34、p 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 by hea
35、ting 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 Composition6.1 Alloy GroupsIt is the intent of this specification thatfast
36、eners 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 6.2.2.Alloy Group Al
37、loys1 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 approved by the purchaser, Alloys 416 or 416Se may be furnished.6.2 Chem
38、ical 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 fabrication and material a
39、vailability. 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 a spe-cific allo
40、y 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 each lot. Thechem
41、ical 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 event of discrepancy, a referee chemical analy-sis of samples from each
42、 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 the mechanical prop
43、ertyrequirements as specified herein.7.2 Fasteners having a nominal thread diameter-length com-bination as follows:TABLE 1 Chemical RequirementsAlloyGroupUNSDesigna-tionAlloy Composition, % maximum except as shownCarbon Manga-nesePhos-phorusSulfur Silicon Chromium Nickel Copper Molybdenum OthersAust
44、enitic 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 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.
45、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 0.045 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
46、.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 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.
47、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 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
48、.250.0400.0600.0300.15 min1.001.0016.0 to 18.016.0 to 18.0. .0.60 maxA.Martensitic Alloys555S41000S41600S41623410416416Se0.150.150.151.001.251.250.0400.0600.0600.0300.15 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.
49、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.F593 13a3TABLE 2 Mechanical Property RequirementsAStain-less Al-loy GroupConditionBAlloy MechanicalProperty MarkingNominalDiameter,in.Full-Size Tests Machined Specimen TestsTensileStrengthksiCYieldStrength,ksiD,CRockwellHardnessTensileStrengthksiCYieldStrength,ksiD,CElon-gationin 4 D,%Au
