1、Designation: B 493 01 (Reapproved 2003)Standard Specification forZirconium and Zirconium Alloy Forgings1This standard is issued under the fixed designation B 493; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last rev
2、ision. 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 specification2covers three grades of zirconium andzirconium alloy forgings.1.2 The values stated in inch-pound units are
3、 to be regardedas the standard. The values given in parentheses are forinformation only.1.3 The following safety hazards caveat pertains only tothe test method portion, Section 12, of this specification: Thisstandard does not purport to address all of the safety problems,if any, associated with its
4、use. It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2. Referenced Documents2.1 ASTM Standards:E 8 Test Methods for Tension Testing of Metallic Materials33. Terminology3.1
5、 Lot Definitions:3.1.1 castingsa lot shall consist of all castings producedfrom the same pour.3.1.2 ingotno definition required.3.1.3 rounds, flats, tubes, and wrought powder metallurgicalproducts (single definition, common to nuclear and non-nuclear standards)a lot shall consist of a material of th
6、esame size, shape, condition, 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
7、toa single furnace load for final batch anneal.3.1.4 spongea lot shall consist of a single blend producedat one time.3.1.5 weld fittingsdefinition is to be mutually agreed uponbetween manufacturer and the purchaser.4. Classification4.1 The forgings are furnished in three grades as follows:4.1.1 Grad
8、e R60702Unalloyed zirconium.4.1.2 Grade R60704Zirconium-tin alloy.4.1.3 Grade R60705Zirconium-niobium alloy.5. Ordering Information5.1 Orders for material under this specification shall includethe following information:5.1.1 Quantity (weight and number of pieces),5.1.2 Name of material (zirconium fo
9、rgings),5.1.3 Finish (Section 9),5.1.4 Dimension (diameter, thickness, length, width, or asspecified in appropriate drawings),5.1.5 ASTM designation and year of issue,5.1.6 Grade number (see 3.1), and5.1.7 Additions to the specification and supplementary re-quirements, if required.NOTE 1A typical or
10、dering description is as follows: 8000-lb zirco-nium forgings, mechanically descaled 10 by 12 by 12-in. rectangular bar,ASTM B 493, dated _, Grade R60702.6. Materials and Manufacture6.1 The forgings shall be formed with conventional forgingequipment normally found in primary ferrous and nonferrousme
11、tal plants.6.2 Forgings shall be furnished in the annealed conditions.7. Chemical Composition7.1 The material shall conform to the requirements as tochemical composition prescribed in Table 1.7.2 The manufacturers ingot analysis shall be consideredthe chemical analysis for forgings, except for hydro
12、gen andnitrogen, which shall be determined on the finished product.1This specification is under the jurisdiction of ASTM Committee B10 onReactive and Refractory Metals and Alloysand is the direct responsibility ofSubcommittee B10.02on Zirconium and Hafnium.Current edition approved May 10, 2003. Publ
13、ished May 2003. Originallyapproved in 1969. Last previous edition approved in 2001 as B 493 01.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SB-493 in Section II of that Code.3Annual Book of ASTM Standards, Vol 03.01.1Copyright ASTM International, 100 Barr Harbor
14、Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7.3 When requested by the purchaser and stated in thepurchase order, a check analysis for any elements listed inTable 1 shall be made on the finished product.7.3.1 The manufacturers analysis shall be considered asverified if the che
15、ck analysis confirms the manufacturersreported values within the tolerances prescribed in Table 2.8. Workmanship and Quality Level Requirements8.1 The material shall be free of injurious imperfections.Minor surface imperfections may be removed by spot grindingif such grinding does not reduce the dim
16、ensions of the finishedpiece below the minimum permitted by the tolerance for theproduct.9. Finish and Appearance9.1 The forgings shall have one of the following surfaceconditions as specified:9.1.1 As forged,9.1.2 Mechanically descaled, or9.1.3 Mechanically descaled and pickled.10. Tensile Requirem
17、ents10.1 The material, as represented by the test specimens,shall conform to the tensile properties prescribed in Table 3.11. Number of Tests and Retests11.1 Two tension tests shall be made from each lot.11.2 Two chemistry tests for hydrogen and nitrogen contentshall be made from each lot of finishe
18、d product.11.3 Retests:11.3.1 If any sample or specimen exhibits obvious surfacecontamination or improper preparation disqualifying it as atruly representative sample, it shall be discarded and a newsample or specimen substituted.11.3.2 If the results of any tests of any lot do not conform tothe req
19、uirements specified, retests shall be made on additionalforgings of double the original number from the same lot, eachof which shall conform to the requirements specified.12. Test Methods12.1 Tension TestsConduct the tension test in accordancewith Test Methods E 8. Determine the yield strength by th
20、eoffset (0.2 %) method. Determine the tensile properties using astrain rate of 0.003 to 0.007 in./in.min through the yieldstrength. After the yield strength has been exceeded, increasethe cross-head speed to approximately 0.05 in./in.min tofailure.12.2 Chemical TestsConduct the chemical analysis by
21、thestandard techniques normally used by the manufacturer.13. Inspection13.1 The manufacturer shall inspect the material covered bythis specification prior to shipment and, on request, shallfurnish the purchaser with certificates of test. If so specified inthe purchase order, the purchaser or his rep
22、resentative maywitness the testing and inspection of the material at the place ofmanufacture. In such cases, the purchaser shall state in hispurchase order which tests he desires to witness. The manu-facturer shall give ample notice to the purchaser as to the timeand place of the designated tests. I
23、f the purchasers represen-tative does not present himself at the time agreed upon for thetesting, the manufacturer shall consider the requirement for thepurchasers inspection at the place of manufacture to bewaived.13.2 The manufacturer shall afford the inspector represent-ing the purchaser, without
24、 charge, all reasonable 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.14. Rejection and Rehearing14.1 Material that fails to conform to the req
25、uirements ofthis specification may be rejected. Rejection should be reportedto the producer or supplier promptly and in writing. In case ofdissatisfaction with the results of the test, the producer orsupplier may make claim for a rehearing.15. Certification15.1 When specified in the purchase order o
26、r contract, aproducers or suppliers certification shall be furnished to theTABLE 1 Chemical RequirementsAElementComposition, %UNS Grade DesignationR60702 R60704 R60705Zirconium + hafnium, min 99.2 97.5 95.5Hafnium, max 4.5 4.5 4.5Iron + chromium 0.2 max 0.2 to 0.4 0.2 maxTin . 1.0 to 2.0 .Hydrogen,
27、max 0.005 0.005 0.005Nitrogen, max 0.025 0.025 0.025Carbon, max 0.05 0.05 0.05Niobium . . 2.0 to 3.0Oxygen 0.16 0.18 0.18ABy agreement between the purchaser and the manufacturer, analysis may berequired and limits established for elements and compounds not specified in thetable of chemical compositi
28、on.TABLE 2 Permissible Variation in Check Analysis BetweenDifferent LaboratoriesElementPermissible Variationin Product Analysis, %Hydrogen 0.002Nitrogen 0.01Carbon 0.01Hafnium 0.1Iron + chromium 0.025Tin 0.05Niobium 0.05Oxygen 0.02TABLE 3 Tensile RequirementsUNS Grade DesignationR60702 R60704 R60705
29、Tensile strength, min, ksi (MPa) 55 (379) 60 (413) 70 (483)Yield strength, min, ksi (MPa) 30 (207) 35 (241) 55 (379)Elongation in 2 in. or 50 mm,min, %A16 14 16AWhen a sub-size specimen is used, the gage length shall be as specified inTest Methods E 8 for that specimen.B 493 01 (2003)2purchaser that
30、 the material was manufactured, 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.16. Referee16.1 In the event of disagreement between the man
31、ufacturerand 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 in question. The results of the referees testing shall beused in determining conformance of the m
32、aterial to thisspecification.17. Product Marking17.1 Unless otherwise specified, each forging over 2 lb (0.9kg), manufactured in accordance with this specification, shallbe marked legibly, either by stenciling, stamping, or rollingwith the manufacturers private identification mark, the ASTMdesignati
33、on, the grade, and lot number. On smaller than 2-lbforgings, the same information shall be stamped legibly on thecontainer, or on a metal tag securely fastened to each part orpackage of parts.18. Packaging and Package Marking18.1 The forgings shall be packaged either in a suitable boxor banded on a
34、skid.19. Keywords19.1 zirconium; zirconium alloy forSUPPLEMENTARY REQUIREMENTSS1. Special Internal SoundnessS1.1 Forging shall be produced with specified internalsoundness to be verified by electric test or radiography tostandards agreed upon between the manufacturer and thepurchaser prior to the ac
35、ceptance of the order.S2. Surface QualityS2.1 The surface quality shall be as agreed upon between themanufacturer and the purchaser.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard
36、 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 five years andif n
37、ot 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 committee, which
38、 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 website(www.astm.org).B 493 01 (2003)3
