1、Designation: F1314 13a1F1314 18Standard Specification forWrought Nitrogen Strengthened 22 Chromium13 Nickel5Manganese2.5 Molybdenum Stainless Steel Alloy Bar andWire for Surgical Implants (UNS S20910)1This standard is issued under the fixed designation F1314; the number immediately following the des
2、ignation indicates the year oforiginal adoption or, in the case of revision, the year 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 NOTEThe designation was corrected edito
3、rially in December 2013.1. Scope*1.1 This specification covers the chemical, mechanical, and metallurgical requirements for wrought nitrogen strengthened 22chromium 13 nickel 5 manganese 2.5 molybdenum stainless steel alloy bar and wire for surgical implants.1.2 The SI units in this standard are the
4、 primary units. The values stated in either primary SI units or secondary inch-pound unitsare to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each systemshall be used independently of theeach other. Combining values fromform the two sy
5、stems may result in non-conformance withthe standard.1.3 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby
6、the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless SteelsA484/A484M Specification for General Requirements for Stainless Steel Bars, Billets, a
7、nd ForgingsA555/A555M Specification for General Requirements for Stainless Steel Wire and Wire RodsA751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel ProductsE8/E8M Test Methods for Tension Testing of Metallic MaterialsE10 Test Method for Brinell Hardness of Metallic Materi
8、alsE18 Test Methods for Rockwell Hardness of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data to Determine Conformance with SpecificationsE45 Test Methods for Determining the Inclusion Content of SteelE112 Test Methods for Determining Average Grain SizeE354 Test Methods for C
9、hemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, andCobalt AlloysE407 Practice for Microetching Metals and AlloysF138 Specification for Wrought 18Chromium-14Nickel-2.5Molybdenum Stainless Steel Bar and Wire for Surgical Implants(UNS S31673)F746 Test Method
10、for Pitting or Crevice Corrosion of Metallic Surgical Implant MaterialsIEEE/ASTM SI 10 American National Standard for Metric Practice2.2 Aerospace Materials Specification:3AMS 2248 Chemical Check Analysis Limits, Corrosion and Heat Resistant Steels and Alloys, Maraging and OtherHighly-Alloyed Steels
11、, and Iron Alloys1 This specification is under the jurisdiction of ASTM Committee F04 on Medical and Surgical Materials and Devices and is the direct responsibility of SubcommitteeF04.12 on Metallurgical Materials.Current edition approved Oct. 1, 2013Feb. 1, 2018. Published November 2013March 2018.
12、Originally approved in 1990. Last previous edition approved in 2013 asF1314 13.F1314 13a1. DOI: 10.1520/F1314-13AE01.10.1520/F1314-18.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume infor
13、mation, refer to the standards Document Summary page on the ASTM website.3 Available from Society of Automotive Engineers (SAE), 400 Commonwealth Dr., Warrendale, PA 15096-0001, http:/www.sae.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an in
14、dication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be
15、 considered the official document.*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 States1AMS 2630 Inspection, Ultrasonic Product Over 0.5 inch (12.7 mm) ThickAMS 2632 Ultrasoni
16、c Inspection of Thin Materials2.3 ISO Standards:4ISO 6892 Metallic Materials Tensile Testing at Ambient TemperatureISO 9001 Quality Management SystemsRequirements3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 bar, nround bars and flats from 0.1875 in. 4.75 mm to 4.00 in. 101.
17、60 mm4.75 mm 0.1875 in. to 101.60 mm 4.00in. in diameter or thickness (other sizes and shapes by special order).3.1.2 forging bar, nas described in 3.1.2 used for production of forgings, may be furnished in the hot rolled condition.3.1.3 lot, nthe total number mill products produced under the same m
18、elt heat under the same conditions at essentially the sametime.3.1.4 wire, nrounds less than 0.1875 in. 4.75 mm4.75 mm 0.1875 in. in diameter.4. Ordering Information4.1 Inquiries and orders for material under this specification shall include the following information:4.1.1 Quantity;4.1.2 ASTM design
19、ation and date of issue;4.1.3 Mechanical properties (if applicable for special conditions);4.1.4 Form (bar or wire);4.1.5 Applicable dimensions including size, thickness, width, and length (exact, random, or multiples) or drawing number;4.1.6 Tolerancesunless otherwise specified by purchaser, tolera
20、nces must meet the requirements of Specification A484/A484M, A555/A555M, or both, as applicable;4.1.7 Condition (see 5.1);4.1.8 Finish (see 5.2);4.1.9 Special tests (if any); and4.1.10 Other requirements.5. Materials and Manufacture5.1 ConditionBar and wire shall be furnished in the hot-worked, anne
21、aled, or cold-worked condition, as specified.5.2 FinishBar and wire shall be furnished bright annealed, cold drawn, pickled, ground, or ground and polished, as specifiedby the purchaser.6. Chemical Requirements6.1 The suppliers heat analysis shall conform to the chemical requirements prescribed in T
22、able 1. The supplier shall not shipmaterial with chemistry outside the requirements specified in Table 1.4 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.TABLE 1 Chemical CompositionElement Composition, %(Mass/Mass)Carbo
23、n 0.030 maxManganese 4.00 to 6.00Phosphorus 0.025 maxSulfur 0.010 maxSilicon 0.75 maxChromium 20.50 to 23.50Nickel 11.50 to 13.50Molybdenum 2.00 to 3.00Nitrogen 0.20 to 0.40Niobium 0.10 to 0.30Vanadium 0.10 to 0.30Copper 0.50 maxIron balanceAA Approximately equal to the difference of 100 % and the s
24、um percentage of theother specified elements. Reporting of the iron difference is not required.F1314 1826.1.1 Requirements for the major and minor elemental constituents are listed in Table 1. Also listed are important residualelements. Analysis for elements not listed in Table 1 is not required to
25、verify compliance with this specification.6.1.2 Methods and practices relating to chemical analysis required by this specification shall be in accordance withTest MethodsA751.6.2 Product AnalysisThe product analysis is either for the purpose of verifying the composition of a heat or manufacturinglot
26、 or to determine variations in the composition within the heat.6.2.1 Acceptance or rejection of a heat or lot of material may be made by the purchaser on the basis of this product analysis.6.2.2 Product analysis tolerances do not broaden the specified heat analysis requirements but cover variations
27、betweenlaboratories in the measurement of chemical content. Product analysis limits shall be as specified in Table 2.6.2.3 Methods and practices relating to chemical analysis required by this specification shall be in accordance withTest MethodsE354.7. Metallurgical Requirements7.1 The material shal
28、l contain no delta ferrite, chi, or sigma phases when it is examined metallographically at 100magnification in accordance with Practice E407.7.2 The microcleanliness of the material, as determined by Practice E45, Method A, except using Plate Ir, on representativebillet or bar samples from the heat
29、shall not exceed the following:InclusionTypeA(Sulfide)B(Alumina)C(Silicate)D (GlobularOxide)ThinHeavy1.51.52.51.52.51.52.51.58. Mechanical Requirements8.1 Tensile Properties:8.1.1 Tensile properties shall be determined in accordance with Test Methods E8/E8M.8.1.2 The mechanical properties of test sp
30、ecimens shall conform to the requirements specified in Table 3.8.2 Hardness:8.2.1 Hardness values shall be determined in accordance with Test Method E10 or Test Methods E18.8.2.2 When desired, hardness limits may be specified by the purchaser. Hardness determinations shall be made on a productcross
31、section, midway between the center and surface, if the cross section is adequate.8.3 Number of TestsBar, Forging Bar, Shapes and Wire:8.3.1 Perform tension testing per Test Methods E8/E8M. Should any of the test specimens not meet the specified requirements,test two additional test pieces representa
32、tive of the same lot, in the same manner, for each failed test piece. The lot shall beconsidered in compliance only if all additional test pieces meet the specified requirements.TABLE 2 Product Analysis TolerancesAElementPermissible VariationUnder theMinimum Limit or Overthe Maximum Limit,% (Mass/Ma
33、ss)BCarbon 0.005ManganeseC 0.05Phosphorus 0.005Sulfur 0.005Silicon 0.05Chromium 0.25Nickel 0.15Molybdenum 0.10NitrogenC 0.02 under min;0.04 over maxNiobium 0.05Vanadium 0.03Copper 0.03ARefer to AMS 2248 for chemical check analysis limits (except nitrogen).BFor elements in which only a maximum percen
34、tage is indicated, the “underminimum limit” is not applicable.CThe specified range for this element is not covered byAMS 2248 and permissiblevariation has been established through industrial practice.F1314 1838.3.2 Tensile test results for which any specimen fractures outside the gauge length shall
35、be considered acceptable if both theelongation and reduction of area meet the minimum requirements specified. Refer to subsections 7.11.4 and 7.11.5 of Test MethodE8/E8M. If either the elongation or reduction of area is less than the minimum requirement, discard the test and retest. Retest onespecim
36、en for each specimen that did not meet the minimum requirements.9. Dimensions and Permissible Variations9.1 Units of Measure:9.1.1 SelectionThis specification requires that the purchaser selects the units (SI or inch-pound) to be used for productcertification. In the absence of a stated selection of
37、 units on the purchase order, this selection may be expressed by the purchaserin several alternate forms listed in order of precedence.9.1.1.1 If the purchaser and supplier have a history of using specific units, these units shall continue to be certified untilexpressly changed by the purchaser.9.1.
38、1.2 In the absence of historic precedence, if the units used to define the product on the purchasers purchase order (PO),specification, and engineering drawing are consistent, these units shall be used by the supplier for product certification.9.1.1.3 If the purchasers selection of units is unclear,
39、 the units of measure shall be agreed upon between the purchaser andsupplier.9.1.2 Conversion of UnitsIf the suppliers test equipment does not report in the selected units, the test equipment units maybe converted to the selected units for certification purposes. Accurate arithmetic conversion and p
40、roper use of significant digitsshould be observed when performing this conversion. IEEE/ASTM SI 10 provides guidelines for the use of SI units. Annex Aof that standard provides conversion tables and Annex B provides rules for conversion and significance.10. Special Tests10.1 Bar and wire conforming
41、to this specification shall be capable of passing the intergranular corrosion susceptibility test inaccordance with Practice E of Practices A262.10.2 Bar and wire conforming to this specification shall have a homogeneous microstructure with an average grain size ofASTM No. 5 or finer when measured i
42、n accordance with Test Method E112.10.2.1 If samples are selected after a final cold working, specimens shall be tested in accordance with Test Method E112 or asagreed between the supplier and purchaser.10.3 All centerless ground or peeled and polished round bar 0.375 in. 9.5 mm9.5 mm 0.375 in. in n
43、ominal diameter shallbe ultrasonically inspected at final diameter according to AMS 2630, Class A1. Equivalent test methods may be substituted whenagreed upon by the purchaser and supplier.NOTE 1AMS 2630 specifies a minimum size limit of 0.50 in. 12.7 mm. F04.1212.7 mm 0.50 in. F04.12 committee has
44、intentionally specifiedthe use ofAMS 2630 below 0.50 in. 12.7 mm12.7 mm 0.50 in. based on the experience of users and producers on the committee.There is disagreementin the industry as to whether AMS 2632, which does apply to sizes under 0.50 in. 12.7 mm,12.7 mm 0.50 in., applies to solid round bar.
45、TABLE 3 Mechanical Requirements, Bar and WireCondition Diameter or Thickness,in. mmUltimate TensileStrength, min,psi MPaYield Strength(0.2 % Offset),min, psi MPaElongationAmin, %BrinellB Hardness,max, HBHot-workedC Up to 2 50.8D , incl . . . 325Annealed All 100 000 690 55 000 380 35 .Cold-worked 0.0
46、63 to 0.7501.59 to19.1D , incl150 000 1035 125 000 862 12 .TABLE 3 Mechanical Requirements, Bar and WireCondition Diameter or Thickness,mm in.Ultimate TensileStrength, min,MPa psiYield Strength(0.2 % Offset),min, MPa psiElongationAmin, %BrinellB Hardness,max, HBHot-workedC Up to 50.8 2,D incl . . .
47、325Annealed All 690 100 000 380 55 000 35 .Cold-worked 1.59 to 19.10.063 to0.750,D incl1035 150 000 862 125 000 12 .AElongation of material 0.063 in. 1.6 mm1.6 mm 0.063 in. or greater in diameter (D) or width (W) shall be measured using a gauge length of 2 in. 50 mm 2 in. or 4Dor 4W. The gauge lengt
48、h shall be reported with the test results. The method for determining elongation of material under 0.063 in. 1.6 mm1.6 mm 0.063 in. in diameteror thickness may be negotiated. Alternatively, a gauge length corresponding to ISO 6892 (5.65 times the square root of So, where So is the original cross sec
49、tional area)may be used when agreed upon between the supplier and purchaser.B3000-kgf 29 430 N load.CTypically supplied as-hot-rolled bar for forging applications.DOther sizes may be furnished by agreement between the supplier and the purchaser.F1314 18410.4 Billet shall be ultrasonically inspected prior to being hot rolled if ultrasonic inspection is not performed at a final diameteras specified in 10.3. Acceptance criteria shall be agreed to between the purchaser
