ASTM_B_495_-_10.pdf

Designation:B49510Standard Specification forZirconium and Zirconium Alloy Ingots1This standard is issued under the fixed designation B495;the number immediately following the designation 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.Scope1.1 This specification covers six grades of zirconium ingots.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 The following precautionary caveat pertains only to thetest method portion,Section 10,of this specification:Thisstandard does not purport to address all of the safety concerns,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:2E114 Practice for Ultrasonic Pulse-Echo Straight-BeamContact TestingE2626 Guide for Spectrometric Analysis of Reactive andRefractory Metals3.Terminology3.1 Lot Definitions:3.1.1 ingot,na quantity of metal cast into a shape suitablefor subsequent processing to various mill products.4.Classification4.1 The ingots are furnished in six grades as follows:4.1.1 Grade R60700Low oxygen unalloyed zirconium.4.1.2 Grade R60702Unalloyed zirconium.4.1.3 Grade R60703Unalloyed zirconium,metallurgicalgrade.4.1.4 Grade R60704Zirconium-tin alloy.4.1.5 Grade R60705Zirconium-niobium alloy.4.1.6 Grade R60706Zirconium-niobium alloy.5.Ordering Information5.1 Orders for materials under this specification shall in-clude the following information:5.1.1 Quantity(weight),5.1.2 Name of material(zirconium ingot),5.1.3 Grade number(Section 4),5.1.4 ASTM designation and year of issue,5.1.5 Finish(Section 8),and5.1.6 Additions to the specification and supplementaryrequirements,if required.NOTE1A typical ordering description is as follows:10,000-lbzirconium ingot,machine conditioned,ASTM B495,dated _,GradeR60702.6.Materials and Manufacture6.1 The ingots covered by this specification shall be manu-factured by electron beam,vacuum,or inert atmospheremelting in furnaces conventionally used for reactive metals.7.Chemical Composition7.1 The material shall conform to the requirements as tochemical composition prescribed in Table 1.7.2 When requested by the purchaser,a check analysis shallbe performed for any elements listed in Table 1.7.2.1 The manufacturers analysis shall be considered asverified if the check analysis confirms the manufacturersreported values within the tolerances prescribed in Table 2.8.Workmanship,Finish,and Appearance8.1 Ingots shall be conditioned by machining,grinding,orsurface fusion to remove gross surface and subsurface defectsdetrimental to subsequent fabrication.8.2 After conditioning has been completed,no abruptchanges in diameter or local depressions that will impairsubsequent fabrication shall be permitted.The differencebetween the maximum and minimum radii of the conditionedingot shall not exceed 20%of the maximum radius,exceptwithin 6 in.(150 mm)of the ends of the ingot where roundingis permissible.Lands,grooves,and local depressions shall beblended to a maximum angle of 30 to the axis of the ingot.1This specification is under the jurisdiction of ASTM Committee B10 onReactive and Refractory Metals and Alloys and is the direct responsibility ofSubcommittee B10.02 on Zirconium and Hafnium.Current edition approved May 1,2010.Published June 2010.Originallyapproved in 1969.Last previous edition approved in 2005 as B495 05.DOI:10.1520/B0495-10.2For 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 standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 Each end of the ingot shall be chamfered or radiused.Theminimum chamfer or radius shall be12in.(12 mm).9.Number of Tests and Retests9.1 At least one sample from the top,middle,and bottom ofeach ingot shall be analyzed chemically.9.2 An ultrasonic test shall be conducted on each ingot.9.3 Retests:9.3.1 Ifanysampleorspecimenexhibitsobviouscontamination,improper preparation,or flaws disqualifying itas a representative sample,it should be discarded and a newsample or specimen substituted.9.3.2 If the results of any test are not in conformance withthe requirements of this specification,the ingot may be retestedat the option of the manufacturer.The ingot shall be acceptableif results of all retests following the initial test conform to thisspecification.10.Test Methods10.1 Ultrasonic TestInspect the ingots ultrasonically bythe m