1、Designation: B 654/B 654M 04Standard Specification forNiobium-Hafnium Alloy Foil, Sheet, Strip, and Plate1This standard is issued under the fixed designation B 654/B 654M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of
2、 last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers hafnium alloyed niobium foil,sheet, strip, and plate.1.2 The material covered by this spec
3、ification is R04295,niobium-base alloy containing approximately 10 % hafniumand 1 % titanium.1.3 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard. Within the text, theSI units are shown in brackets. The values stated in eachsystem are not exact equiva
4、lents; therefore, each system shallbe used independently of the other. Combining values from thetwo systems may result in nonconformance with the specifi-cation.1.4 The following safety hazards caveat pertains only to thetest methods portion, Section 14, of this specification: Thisstandard does not
5、purport to address all of the safety problems,if any, associated with its 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:2B
6、 652/B 652M Specification for Niobium-Hafnium AlloyIngotsE 8 Test Methods for Tension Testing of Metallic MaterialsE 21 Test Methods for Elevated Temperature Tension Testsof Metallic MaterialsE 29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications3. Termin
7、ology3.1 Definitions:3.1.1 foil, na flat product less than 6 in. 150 mm wideand less than 0.005 in. 0.13 mm in thickness.3.1.2 lot, na lot is defined as that material produced fromone ingot and heat-treated at the same conditions.3.1.3 plate, na flat product 6 in. 150 mm or more inwidth and more tha
8、n316 in. 4.8 mm in thickness.3.1.4 sheet, na flat product 6 in. 150 mm or more inwidth and from 0.005 in. 0.13 mm to316 in. 4.8 mm inthickness.3.1.5 strip, na flat product, may be supplied in coil, lessthan 6 in. 150 mm wide and from 0.005 in. 0.13 mm to316in. 4.8 mm in thickness.4. Ordering Informa
9、tion4.1 Orders for material under this specification shouldinclude the following information as applicable:4.1.1 General alloy description (see 1.2) and ASTM desig-nation and year of issue,4.1.2 Quantity in weight or pieces,4.1.3 Size, diameter or thickness, width, and length, asapplicable,4.1.4 Che
10、mical Composition (Section 6),4.1.5 Temper (Section 7),4.1.6 Mechanical test temperature and limits (Sections 8and 14),4.1.7 Permissible dimensional tolerances and weight orquantity variations (see 9.3),4.1.8 Quality and finish (see 10.2),4.1.9 Sampling (see 13.2),4.1.10 Inspection Witnessing (see 1
11、5.2),4.1.11 Certification Requirements (Section 18), and4.1.12 Packaging (Section 20).5. Materials and Manufacture5.1 Materials covered by this specification shall be madefrom ingots in accordance with Specification B 652/B 652M.5.2 The various niobium-hafnium alloy products covered bythis specifica
12、tion are formed with the conventional extrusion,forging, and rolling equipment normally available in metalworking plants.6. Chemical Composition6.1 The chemical composition of niobium-hafnium alloyingots and billets for conversion to finished products coveredby this specification shall conform to th
13、e requirements in Table1. Analysis for elements, not listed in Table 1 and not normally1This specification is under the jurisdiction of Committee B10 on Reactive andRefractory Metals and Alloys and is the direct responsibility of SubcommitteeB10.03 on Niobium and Tantalum.Current edition approved Ma
14、y 1, 2004. Published May 2004. Originallyapproved in 1979. Last previous edition approved in 2003 as B 654 03.2For 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 the st
15、andards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.expected in niobium-hafnium alloy, shall not be requiredunless specified at time of purchase.6.2 The manufacturers ingot analysis shall
16、be consideredthe chemical analysis for products supplied under this specifi-cation.6.3 When specified in the purchase order, the manufacturershall test the product for elements specified in Table 2. Theresults of the tests shall meet the limits shown in Table 2.7. Temper Designations7.1 Unless other
17、wise stated, the materials supplied underthis specification shall be in the annealed condition, defined asat least 90 % recrystallized.7.2 Other temper designations, such as cold-worked temperor stress-relieved temper can be specified as agreed uponbetween the purchaser and the manufacturer at the t
18、ime ofpurchase.8. Mechanical Requirements8.1 Materials in the annealed condition supplied under thisspecification shall conform to the requirements for mechanicalproperties as specified in Table 3. Unless otherwise specified inthe purchase order, the materials shall conform to the require-ments for
19、room temperature mechanical properties. The pur-chaser may specify elevated temperature mechanical propertiesat the time of purchase.9. Permissible Variations9.1 Dimensional tolerancesTolerances on niobium-hafnium alloy products covered by this specification shall be asprescribed in Table 4.9.2 Flat
20、ness tolerance for sheet and plate products suppliedunder this specification shall be 6 % maximum, as determinedby the following equation (see Fig. 1):Flatness, % 5 H/L! 3 100 (1)where:H = maximum vertical distance between a flat referencesurface and the lower surface of the sheet, andL = minimum ho
21、rizontal distance between the highestpoint on the sheet and the point of contact with a flatreference surface. (The method for taking measure-ments for calculation of sheet flatness is shown in Fig.1. However, a value of H less than132 in. 0.8 mmshall not be cause for rejection.)9.3 Quantity or Weig
22、htFor orders up to 100 ft 30 m, themanufacturer may overship by 20 %. For orders up to 1000 lb450 kg or 1000 ft 300 m, the manufacturer may overship by10 %. The permissible overshipment for orders larger than thisquantity shall be negotiated at the time of purchase.10. Quality and Finish10.1 Niobium
23、-hafnium alloy product shall be free of inju-rious external and internal imperfections of a nature that willinterfere with the purpose for which it was intended. Materialmay be finished as forged, rolled, extruded, swaged, drawn; ina cleaned, machined, or ground condition. The manufacturershall be p
24、ermitted to remove minor surface imperfectionsprovided such removal does not reduce the dimensions belowthe minimum permitted by the tolerances in accordance withSection 9.10.2 Test methods for these defects and standards of accept-ability shall be as agreed upon between the purchaser and themanufac
25、turer at the time of purchase.11. Retests11.1 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.11.2 In case of failure, two additional specimens shal
26、l beretested. If both retest specimens conform to this specification,the original values shall be discarded and the material ac-cepted.11.3 If the results of the tests are not in conformance withthe requirements of this specification, the lot may be reworkedat the option of the manufacturer. The lot
27、 shall be acceptable ifthe results of all tests, after reworking, conform to thisspecification.12. Significance of Numerical Limits12.1 The following applies to all specified limits in thisstandard for purposes of determining conformance with thisspecification. The observed value or a calculated val
28、ue shall berounded off “to the nearest unit” in the last right-hand digitused in expressing the specification limit, in accordance withthe rounding-off method of Practice E 29.TABLE 1 Chemical Requirements for IngotNiobium-Hafnium Alloy R04295ElementContent, MaximumWeight % (ExceptWhere OtherwiseSpe
29、cified)Carbon 0.015Oxygen 0.025Nitrogen 0.010Hydrogen 0.0015Hafnium 911Titanium 0.71.3Zirconium 0.700Tungsten 0.500Tantalum 0.500Niobium by difference .TABLE 2 Additional Chemical Requirements for FinishedProductNiobium-Hafnium Alloy R04295ElementContent, MaximumWeight %Oxygen 0.035Carbon 0.015Nitro
30、gen 0.010Hydrogen 0.0015B 654/B 654M 04213. Sampling13.1 Samples shall be taken from the material to determineconformity to this specification. The samples shall be taken soas to be representative of the finished products.13.2 Care shall be exercised to ensure that the sampleselected for testing is
31、representative of the material, and that itis not contaminated by the sampling procedure. If there is anyquestion relating to the sampling techniques or analysisthereof, the methods of sampling and analysis shall be asagreed upon between the manufacturer and the purchaser.14. Test Methods14.1 The te
32、nsile limits shall apply to samples taken in eitherthe longitudinal or transverse direction of processing.14.2 Room Temperature Tension TestConduct room tem-perature tension tests in accordance with Test Methods E 8.Determine the yield strength by the 0.2 % offset method. Smallsize (1-in. 25-mm) gag
33、e length specimens, proportional to thestandard specimen, can be used. Determine tensile propertiesusing a strain rate of 0.003 to 0.007 in./in.min mm/mmminthrough the yield point. After the yield strength has beenexceeded, increase the cross-head speed to approximately 0.05in./in.min mm/mmmin to fa
34、ilure.14.3 Elevated Temperature Tension TestsConduct el-evated temperature tension tests in accordance with TestMethods E 21 at the temperature shown in Table 3. One inch25 mm gage lengths can be used. Strain rates shall be agreedupon by purchaser and manufacturer.14.4 Chemical testsConduct the chem
35、ical analyses by thestandard techniques normally used by the manufacturer.15. Inspection15.1 The manufacturer shall inspect the material covered bythis specification prior to shipment.15.2 If so specified on the purchase order, the purchaser orhis representative may witness the testing and inspectio
36、n of thematerial at the place of manufacture. In such cases, thepurchaser shall state in his purchase order which tests hedesires to witness. The manufacturer shall give ample notice tothe purchaser as to the time and place of the designated test. IfTABLE 3 Mechanical Properties for Material, Anneal
37、ed ConditionA(90 % Minimum Recrystallized)Ultimate TensileStrength, min, psiMPaYield Strength(0.2 % offset), min,psi MPaElongation in 1 in.25 mm gage length,min, %Material 0.05 in. 1.3 mm and thinner:Room temperature 56 000 385 40 000 275 202000 6 25F 1100 6 15C 21 000 145 16 000 110 20Material grea
38、ter than 0.05 in. 1.3 mm inthickness:Room temperature 54 000 370 38 000 260 202000 6 25F 1100 6 15C 21 000 145 16 000 110 20ARefer to Section 14 for conditions of mechanical property tests.TABLE 4 Dimensional Tolerances for Niobium-Hafnium Alloy Flat-Rolled ProductsThickness ofMaterial, in. mm inlow
39、er tableTolerance on Thickness,Aplusor minus, in. mm in lower tableTolerance on Width (slit),Bplusor minus, in. mm in lower tableTolerance on Sheared Lengths, in.mm in lower tableWidth under6 in. or 150 mmWidth 6 to24 in. or 150 to610 mmWidth under6 in. or 150 mmWidth 6 to24 in. or 150 to610 mmLengt
40、h 12 in. or 305mm and underLength over 12 in.or 305 mmPlus Minus Plus Minus0.005 to 0.010 excl 0.0005 0.001 0.012 .116 0332 00.010 to 0.015 excl 0.0007 0.001 0.015 0.015116 0332 00.015 to 0.020 excl 0.0008 0.0015 0.015 0.015116 0332 00.020 to 0.030 excl 0.0015 0.0025 0.020 0.025116 0332 00.030 to 0.
41、060 excl 0.0025 0.0035 0.025 0.030116 0332 00.060 to 0.090 excl 0.004 0.005 0.025 0.035116 0332 00.090 to 0.125 excl 0.006 0.007 . .116 0332 00.125 to 0.187 excl 0.010 0.010 . .116 0332 00.187 to 0.250 excl 0.015 0.015 . .18 0532 00.250 to 0.312 excl 0.020 0.020 . .18 0532 00.312 to 0.375 excl 0.025
42、 0.025 . .316 0732 0Millimetres0.13 to .25 excl 0.013 0.025 0.30 . 1.6 0 2.4 00.25 to 0.40 excl 0.018 0.025 0.4 0.4 1.6 0 2.4 00.40 to 0.50 excl 0.020 0.04 0.4 0.4 1.6 0 2.4 00.50 to 0.8 excl 0.04 0.06 0.5 0.6 1.6 0 2.4 00.8 to 1.5 excl 0.06 0.09 0.6 0.8 1.6 0 2.4 01.5 to 2.3 excl 0.10 0.13 0.6 0.9
43、1.6 0 2.4 02.3 to 3.2 excl 0.15 0.18 . . 1.6 0 2.4 03.2 to 4.8 excl 0.25 0.25 . . 1.6 0 2.4 04.8 to 6.4 excl 0.4 0.4 . . 3.2 0 4.0 06.4 to 8.0excl 0.5 0.5 . . 3.2 0 4.0 08.0 to 9.5 excl 0.6 0.6 . . 4.8 0 5.6 0ATolerance on thickness of sheet over 24 in. 600 mm wide shall be 610 % of the thickness.BT
44、olerance on width of sheared sheet shall be +116 , -0 in. + 1.6, -0 mm.B 654/B 654M 043the purchasers representative does not present himself at theagreed upon time for the testing, and if no new date is agreedupon, the manufacturer shall consider the requirement for thepurchasers inspection at the
45、place of manufacture to bewaived. When the inspector representing the purchaser doesappear at the designated time and place, the manufacturer shallafford him, without charge, all reasonable facilities to see thatthe material is being furnished in accordance with this speci-fication. This inspection
46、shall be conducted so as not tointerfere unnecessarily with production operations.16. Rejection and Rehearing16.1 Material that fails to conform to the requirements ofthis specification may be rejected. Rejection should be reportedto the producer or supplier promptly and in writing. In case ofdissat
47、isfaction with the results of the test, the producer orsupplier may make claim for a rehearing.17. Referee17.1 In the event of disagreement between the manufacturerand the purchaser of the conformance of the material to therequirements of this specification, or any special tests specifiedby the purc
48、haser, 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.18. Certification18.1 When specified in the purchase order or contract, aproducers or suppliers certification shal
49、l be furnished to thepurchaser that 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.19. Product Marking19.1 Each coil of foil, sheet, strip, or plate shall be markedor tagged legibly and conspicuously with the number of thisspecification; temper; heat number; manu
