1、Designation: B 737 05Standard Specification forHot-Rolled and/or Cold-Finished Hafnium Rod and Wire1This standard is issued under the fixed designation B 737; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revisio
2、n. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers hot- or cold-worked hafniumrod and wire, or both.1.2 This specification contains two material grades, o
3、nespecifically for nuclear applications (Grade R1) and one forcommercial applications for alloying (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,
4、corrosion massgain 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 Thi
5、s standard does 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 Document
6、s2.1 ASTM Standards: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 Specifications3. Terminology3.1 Lot Definitions:3.1.1 castings
7、, na lot shall consist of all castings producedfrom the same pour.3.1.2 ingot, nno definition required.3.1.3 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, con
8、dition, and finish produced from the sameingot or powder blend by 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 loa
9、d for final batch anneal.3.1.4 sponge, na lot shall consist of a single blendproduced at one time.3.1.5 weld fittings, ndefinition is to be mutually agreedupon between manufacturer and the purchaser.4. Ordering Information4.1 Purchase orders for material under this specificationshall include the fol
10、lowing 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),4.1.6 Grade (Table 1),4.1.7 ASTM designation and year of i
11、ssue,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. minimum random lengths; Grade R1; ASTM Specification B 737
12、- 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 Straightness (Table 2),4.2.3 Special tests (Section 11),4.2.
13、4 Inspection (Section 16),4.2.5 Hafnium isotopic composition and its analysis, (Table1),4.2.6 Metallurgical condition (Section 6),4.2.7 Corrosion test Grade 3 (9.3),4.2.8 Rejected material return (Section 17), and1This specification is under the jurisdiction of ASTM Committee B10 onReactive and Refr
14、actory Metals and Alloys and is the direct responsibility ofSubcommittee B10.02 on Zirconium and Hafnium.Current edition approved May 1, 2005. Published June 2005. Originallyapproved in 1984. Last previous edition approved in 2001 as B 737 01.2For referenced ASTM standards, visit the ASTM website, w
15、ww.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, United States.4.2
16、.9 Certification requirements (Section 19).5. Materials and Manufacture5.1 Material covered by this specification shall be made byconventional hot and cold working procedures, from ingotsproduced by vacuum melting in electron beam or consumablearc furnaces, or both, of a type conventionally used for
17、 reactivemetals.6. Metallurgical Condition6.1 All grades furnished under this specification shall be inthe recrystallization annealed condition unless otherwise speci-fied.7. Chemical Composition7.1 The material shall conform to the requirements forchemical composition as prescribed in Table 1.7.2 T
18、he manufacturers ingot analysis shall be consideredthe chemical analysis for material produced to this specifica-tion except for hydrogen and nitrogen content which shall bedetermined on the finished product.7.3 Analysis shall be made using the manufacturers stan-dard methods. In the event of disagr
19、eement as to the chemicalcomposition of the metal, methods of chemical analysis forreference purposes shall be determined by a mutually accept-able laboratory.7.4 Sampling for chemical composition shall consist ofsamples taken at top, middle, and bottom of the ingot. Samplesfor hydrogen and nitrogen
20、 shall be taken as two randomsamples from each 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 speci
21、fied in the purchase order(see Test Methods 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/mmmin through the yieldstrength. After the yield stre
22、ngth has been exceeded, thecross-head speed shall be increased to approximately 0.05in./in.mm/mmmin 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 p
23、si (18.5MPa) for 672+80 h using the manufacturers 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
24、 require-ments for the specified product 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
25、with one of the followingsurface finishes as designated in the purchase order:TABLE 1 Chemical RequirementsComposition, 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
26、0.0020 .Nickel 0.0050 .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 establishe
27、d by mutualagreement 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) P
28、ermissible VariationsUp 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 inlength/5)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 inlength/5)AThe measurement is taken on the co
29、ncave side of the bar with a straight- edge.Unless otherwise specified, hot- or cold-finished bars for machining purposes arefurnished machine straightened to the tolerances specified in the table.TABLE 3 Mechanical PropertiesGrade Condition Test TemperatureTensile Strength, minksi (MPa)Yield Streng
30、th, minksi (MPa)Elongation in 2 in.or 50 mm, min, %R1 annealed RT 58 (400) 22 (150) 22annealed 600F (315C) 25 (170) 11 (75) 32B73705212.1.1 Mechanically 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
31、of the followingsurface finishes as designated in the purchase order:12.2.1 Conditioned and pickled, or12.2.2 Conditioned, pickled, and oxidized.13. Workmanship13.1 Cracks, seams, slivers, blisters, burrs, and other inju-rious imperfections shall not exceed standards of acceptabilityagreed upon by t
32、he 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 exhibits obvious contami-nation, improper preparation, or flaws disqualifying it as arepresentative sample, it shall be discarded and a new sampleor spe
33、cimen substituted.14.3 If the results of any test lot are not in conformance withthe requirements of this specification, the lot may be retested atthe 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 spec
34、ification, then the retest values willbecome the test values for certification.All test values, originaland retest, shall be reported to the purchaser.15. Significance of Numerical Limits15.1 For the purpose of determining compliance with thespecified limits for requirements of the properties listed
35、 in thefollowing table, an observed value or a calculated value shallbe rounded as indicated in accordance with the roundingmethods of Practice E29.PropertyRounded Unit for Observedor Calculated ValueChemical composition, andtolerances (when expressed asdecimals)nearest unit in the last right-hand p
36、lace of fig-ures of the specified limitTensile strength and yieldstrengthnearest 1000 psi (10 MPa)Elongation nearest 1 %16. Inspection16.1 The manufacturer shall inspect the material covered bythis specification prior to shipment. If so specified in thepurchase order, the purchaser or his representa
37、tive may witnessthe testing and inspection of the material at the place ofmanufacture. In such cases, the purchaser shall state in hispurchase order 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 purchase
38、rs representative doesnot present himself at the time agreed upon for the testing, themanufacturer shall consider the requirement for purchasersinspection at place of manufacture to be waived.16.2 The manufacturer shall afford the inspector represent-ing the purchaser, without charge, all reasonable
39、 facilities tosatisfy him that the material is being furnished in accordancewith this specification. This inspection shall be so conducted asnot to interfere unnecessarily with the operation of the works.17. Rejection17.1 Rejection for failure of the material to meet therequirements of this specific
40、ation shall be reported to themanufacturer within 60 calendar days from the receipt of thematerial by the purchaser. Unless otherwise specified, rejectedmaterial may be returned to the manufacturer at the manufac-turers expense, unless the purchaser receives, within 3 weeksof the notice of rejection
41、, other instructions for disposition.18. Referee18.1 In the event of disagreement between the manufacturerand the purchaser on the conformance of the material to therequirements of this specification or any special test specifiedby the purchaser, a mutually acceptable referee shall performthe tests
42、in question. The results of the referees testing shall beused in determining conformance of the material to thisspecification.19. Certification19.1 When specified in the purchase order or contract, aproducers or suppliers certification shall be furnished to thepurchaser that the material was manufac
43、tured, sampled, tested,and inspected in accordance with this specification and hasbeen found to meet the requirements. When specified in thepurchase order or contract, a report of the test results shall befurnished.20. Packaging and Package Marking20.1 Each shipment shall be legibly and conspicuousl
44、ymarked 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, and20.1.8 ASTM specification designation number.20.2 All material shall be
45、 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-Finished Rod and WireDiameters, in. (mm)PermissibleVariations, in. (m
46、m)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 after cold finishing,because of special hardness, surface or mechanical
47、property requirements,tolerances are double those shown in the table.B737053ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validit
48、y 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 five years andif not revised, either reapproved or withdrawn. Your comment
49、s 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 committee, 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
