1、Designation: B737 10Standard Specification forHot-Rolled and/or Cold-Finished Hafnium Rod and Wire1This standard is issued under the fixed designation B737; 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 () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers hot- or cold-worked hafniumrod and wire.1.2 This specification contains two material grades, onespecifical
3、ly for nuclear applications (Grade R1) and one forcommercial alloying applications (Grade R3).1.3 The products covered include the following:1.3.1 Rod38 to 1 in. (9.5 to 25 mm) in diameter.1.3.2 Wire less than38 in. (9.5 mm) in diameter.1.4 Unless a single unit is used, for example, corrosion massga
4、in in mg/dm2, the values stated in either inch-pound or SIunits are to be regarded separately as standard. The valuesstated in each system are not exact equivalents; therefore, eachsystem must be used independently of the other. SI valuescannot be mixed with inch-pound values.1.5 This standard does
5、not purport to address all of thesafety concerns, 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 Standa
6、rds:2E8 Test Methods for Tension Testing of Metallic MaterialsE21 Test Methods for Elevated Temperature Tension Testsof Metallic MaterialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE2626 Guide for Spectrometric Analysis of Reactive andRefractory
7、 Metals3. Terminology3.1 Definitions:3.1.1 rounds, flats, tubes, and wrought powder metallurgicalproducts (single definition, common to nuclear and non-nuclear standards), na lot shall consist of a material of thesame size, shape, condition, and finish produced from the sameingot or powder blend by
8、the same reduction schedule and thesame heat treatment parameters. Unless otherwise agreedbetween manufacturer and purchaser, a lot shall be limited tothe product of an 8 h period for final continuous anneal, or toa single furnace load for final batch anneal.4. Ordering Information4.1 Purchase order
9、s for material under this specificationshall include the following information as required to ad-equately describe the desired material:4.1.1 Quantity (weight or number of pieces),4.1.2 Name of material,4.1.3 Form (rod, wire),4.1.4 Finish (Section 12),4.1.5 Applicable dimensions (diameter and length
10、),4.1.6 Grade (Table 1),4.1.7 ASTM designation and year of issue,4.1.8 Zirconium analysis requirements (Table 1), and4.1.9 Workmanship standards (Section 13).NOTE 1A typical ordering description is as follows: 500 lb hafniumrod, annealed; mechanically descaled and pickled; 0.375 in. diameter by 6in.
11、 minimum random lengths; Grade R1; ASTM Specification B737 - 01.4.2 In addition to the data specified in 4.1, the followingoptions and points of agreement between the manufacturer andthe purchaser shall be specified on the purchase order ifrequired:4.2.1 Mechanical test temperature (see 8.1),4.2.2 M
12、echanical test requirements for Grade R3 (Section8),4.2.3 Straightness (Table 2),4.2.4 Special tests (Section 11),4.2.5 Inspection (Section 16),4.2.6 Hafnium isotopic composition and its analysis, (Table1),1This specification is under the jurisdiction of ASTM Committee B10 onReactive and Refractory
13、Metals and Alloys and is the direct responsibility ofSubcommittee B10.02 on Zirconium and Hafnium.Current edition approved May 1, 2010. Published May 2010. Originallyapproved in 1984. Last previous edition approved in 2005 as B737 05. DOI:10.1520/B0737-10.2For referenced ASTM standards, visit the AS
14、TM 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.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, Unit
15、ed States.4.2.7 Metallurgical condition (Section 6),4.2.8 Corrosion test Grade 3 (9.3),4.2.9 Rejected material return (Section 17), and4.2.10 Certification requirements (Section 19).5. Materials and Manufacture5.1 Material covered by this specification shall be made byconventional hot and cold worki
16、ng procedures, from ingotsproduced by vacuum melting in electron beam or consumablearc furnaces, or both, of a type conventionally used for reactivemetals.6. Metallurgical Condition6.1 All grades furnished under this specification shall be inthe recrystallization annealed condition unless otherwise
17、speci-fied.7. Chemical Composition7.1 The material shall conform to the requirements forchemical composition as prescribed in Table 1.7.2 The manufacturers ingot analysis shall be consideredthe chemical analysis for material produced to this specifica-tion except for hydrogen and nitrogen content wh
18、ich shall bedetermined on the finished product.7.3 Analysis shall be made using the manufacturers stan-dard methods.7.4 Sampling for chemical composition shall consist ofsamples taken at top, middle, and bottom of the ingot. Samplesfor hydrogen and nitrogen shall be taken as two randomsamples from e
19、ach lot at final size.8. Mechanical Properties8.1 Grade R1 in rod form shall conform to the requirementsprescribed in Table 3 for room temperature mechanical prop-erties. Elevated temperature properties shall be used to deter-mine compliance only when specified in the purchase order(see Test Methods
20、 E21).8.2 The yield strength shall be determined by the offset(0.2 %) method as prescribed in Test Methods E8.8.3 The tensile properties shall be determined using a strainrate of 0.003 to 0.007 in./in.mm/mm/min through the yieldstrength. After the yield strength has been exceeded, thecross-head spee
21、d shall be increased to approximately 0.05in./in.mm/mm/min to failure.8.4 Requirements for mechanical properties do not apply towire.9. Corrosion Properties9.1 Two samples chosen at random from each lot shall becorrosion tested in water at 680F (360C), 2690 psi (18.5MPa) for 672+8/0 h using the manu
22、facturers standardprocedure.9.2 Grade R1Coupons shall exhibit a weight gain of notmore than 10 mg/dm2.9.3 Grade R3Test for information only, if required bypurchase order.10. Permissible Variations in Dimensions10.1 Rod and wire shall conform to the dimensional require-ments for the specified product
23、 as prescribed in Table 2, Table4, and Table 5.11. Special Tests11.1 Additional tests may be specified in the purchase order.The test method and standards shall be agreed upon in advancebetween manufacturer and purchaser.12. Finish12.1 Rods shall be furnished with one of the followingsurface finishe
24、s as designated in the purchase order:TABLE 1 Chemical Requirements Maximum Impurity LevelComposition, Weight %ElementNuclear GradeAlloyingGradeGrade R1 Grade R3Aluminum 0.010 0.050Carbon 0.015 0.025Chromium 0.010 0.050Copper 0.010 .Hydrogen 0.0025 0.0050Iron 0.050 0.0750Molybdenum 0.0020 .Nickel 0.
25、0050 .Niobium 0.010 .Nitrogen 0.010 0.0150Oxygen 0.040 0.130Silicon 0.010 0.050Tantalum 0.020 .Tin 0.0050 .Titanium 0.010 0.050Tungsten 0.0150 0.0150Uranium 0.0010 .Vanadium 0.0050 .ZirconiumAAHafniumBbalance balanceAZirconium shall be reported. Acceptable levels shall be established by mutualagreem
26、ent between purchaser and producer.BHafnium isotopic composition and analytical methods, if required, shall bemutually agreed upon by the purchaser and producer.TABLE 2 Permissible Variations in Straightness for StraightLengths Hot- or Cold-Finished Rod and WireADiameter, in. (mm) Permissible Variat
27、ionsUp to38 (9.5), incl332 in. (2.4 mm) in any 5 ft (1.5 m) but may notexceed332 in. (2.4 mm) 3 (number of feet in length/ 5; number of meters in length / 1.52)Over38 to 1.0 (9.5 to 25)116 in. (1.6 mm) in any 5 ft (1.5 m) but may notexceed116 in. (1.6 mm) 3 (number of feet in length/ 5; number of me
28、ters in length / 1.52)AThe measurement is taken on the concave side of the bar with a straight-edge. Unless otherwise specified, hot- or cold-finished bars for machining pur-poses are furnished machine straightened to the tolerances specified in the table.TABLE 3 Mechanical PropertiesGrade Condition
29、 Test TemperatureTensile Strength, minksi (MPa)Yield Strength, minksi (MPa)Elongation in 2 in.or 50 mm, min, %AR1 annealed RT 58 (400) 22 (150) 22annealed 600F (315C) 25 (170) 11 (75) 32AWhen a sub-size specimen is used, the gage length shall be as specified in Test Methods E8.B737 10212.1.1 Mechani
30、cally descaled and pickled,12.1.2 Centerless ground and pickled, or12.1.3 Centerless ground, pickled, and oxidized.12.2 Wire shall be furnished with one of the followingsurface finishes as designated in the purchase order:12.2.1 Conditioned and pickled, or12.2.2 Conditioned, pickled, and oxidized.13
31、. Workmanship13.1 Cracks, seams, slivers, blisters, burrs, and other inju-rious imperfections shall not exceed standards of acceptabilityagreed upon by the manufacturer and the purchaser.14. Number of Test and Retests14.1 Two random samples shall be taken from each lot.14.2 If any sample or specimen
32、 exhibits obvious contami-nation, improper preparation, or flaws disqualifying it as arepresentative sample, it shall be discarded and a new sampleor specimen substituted.14.3 If the results of any test lot are not in conformance withthe requirements of this specification, the lot may be retested at
33、the option of the manufacturer. The frequency of the retest willbe double the initial number of tests and if the results of theretest conform to the specification, then the retest values willbecome the test values for certification.All test values, originaland retest, shall be reported to the purcha
34、ser.15. Significance of Numerical Limits15.1 For the purpose of determining compliance with thespecified limits for requirements of the properties listed in thefollowing table, an observed value or a calculated value shallbe rounded as indicated in accordance with the roundingmethods of Practice E29
35、.PropertyRounded Unit for Observedor Calculated ValueChemical composition, andtolerances (when expressed asdecimals)nearest unit in the last right-hand place of fig-ures of the specified limitTensile strength and yieldstrengthnearest 1000 psi (10 MPa)Elongation nearest 1 %16. Inspection16.1 The manu
36、facturer shall inspect the material covered bythis specification prior to shipment. If so specified in thepurchase order, the purchaser or his representative may witnessthe testing and inspection of the material at the place ofmanufacture. In such cases, the purchaser shall state in hispurchase orde
37、r which test he desires to witness. The manufac-turer shall give notice to the purchaser as to the time and placeof the designated tests. If the purchasers representative doesnot present himself at the time agreed upon for the testing, themanufacturer shall consider the requirement for purchasersins
38、pection at place of manufacture to be waived.16.2 The manufacturer shall afford the inspector represent-ing the purchaser, without charge, all reasonable facilities tosatisfy him that the material is being furnished in accordancewith this specification. This inspection shall be so conducted asnot to
39、 interfere unnecessarily with the operation of the works.17. Rejection17.1 Rejection for failure of the material to meet therequirements of this specification shall be reported to themanufacturer within 60 calendar days from the receipt of thematerial by the purchaser. Unless otherwise specified, re
40、jectedmaterial may be returned to the manufacturer at the manufac-turers expense, unless the purchaser receives, within 3 weeksof the notice of rejection, other instructions for disposition.18. Referee18.1 In the event of disagreement between the manufacturerand the purchaser on the conformance of t
41、he material to therequirements of this specification or any special test specifiedby the purchaser, a mutually acceptable referee shall performthe tests in question. The results of the referees testing shall beused in determining conformance of the material to thisspecification.19. Certification19.1
42、 A producers or suppliers certification shall be fur-nished to the purchaser that the material was manufactured,sampled, tested, and inspected in accordance with this speci-fication and has been found to meet the requirements. Thecertificate shall include a report of the test results.20. Packaging a
43、nd Package Marking20.1 Each shipment shall be legibly and conspicuouslymarked or tagged with the following information:20.1.1 Purchase order or contract number,20.1.2 Name of material,20.1.3 Grade,20.1.4 Size,20.1.5 Lot, heat or ingot number,20.1.6 Condition,20.1.7 Gross, net, and tare weights, and2
44、0.1.8 ASTM specification designation number.20.2 All material shall be packaged in such a manner as toensure safe delivery to its destination when properly trans-ported by any common carrier.21. Keywords21.1 hafnium; hafnium alloy; rod; wireTABLE 4 Permissible Variations in Diameter for Hot- or Cold
45、-Finished Rod and WireDiameters, in. (mm)PermissibleVariations, in. (mm)AUp to316 (4.8), incl 60.002 (0.05)Over316 to58 (4.8 to 16), incl 60.003 (0.08)Over58 to34 (16 to 19), incl 60.004 (0.10)Over34 to 1.0 (19 to 25), incl 60.005 (0.13)AWhen it is necessary to heat treat or heat treat and pickle af
46、ter cold finishing,because of special hardness, surface or mechanical property requirements,tolerances are double those shown in the table.B737 103ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users o
47、f this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every fiv
48、e years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical c
49、ommittee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM webs
