ASTM_F_30_-_96_2012.pdf

Designation:F3096(Reapproved 2012)Standard Specification forIron-Nickel Sealing Alloys1This standard is issued under the fixed designation F30;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers iron-nickel alloys that areintended primarily for sealing to glass in electronic applica-tions.NOTE1Some of these alloys may be used for sealing to ceramics,butthis specification in its present form is not intended to cover material formetal-to-ceramic seals.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 This standard does not purport to address the safetyconcerns,if any,associated with its use.It is the responsibilityof the user of this standard to establish appropriate safety andhealth practices and determine the applicability of regulatorylimitations prior to use.The hazard statement pertains only tothe test method sections,Sections 10 and 12.2.Referenced Documents2.1 ASTM Standards:2E18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE112 Test Methods for Determining Average Grain SizeE228 Test Method for Linear Thermal Expansion of SolidMaterials With a Push-Rod DilatometerF14 Practice for Making and Testing Reference Glass-MetalBead-SealF140 Practice for Making Reference Glass-Metal Butt Sealsand Testing for Expansion Characteristics by PolarimetricMethodsF144 Practice for Making Reference Glass-Metal SandwichSeal and Testing for Expansion Characteristics by Polari-metric Methods3.Ordering Information3.1 Orders for material under this specification shall includethe following information:3.1.1 Size,3.1.2 Temper(Section 6),3.1.3 Surface finish(Section 8),3.1.4 Marking and packaging(Section 16),and3.1.5 Certification if required.4.Chemical Composition4.1 The material shall conform to the requirements as tochemical composition prescribed in Table 1.5.Surface Lubricants5.1 All lubricants used in processing shall be thoroughlyremoved.Protective coatings present on the material asshipped shall be readily removable by any of the commonorganic degreasing solvents.6.Temper6.1 The desired temper of the material shall be specified onthe purchase order.Unless otherwise specified,wire,rod,bar,and tubing shall be given a final bright anneal by the manu-facturer.Strip and sheet shall be annealed properly to developdeep drawing properties.For deep drawing the hardness shallnot exceed Rockwell B82 for material 0.100 in.(2.54 mm)andless in thickness,and B85 for material over 0.100 in.thickwhen determined in accordance with Test Methods E18.7.Grain Size7.1 Strip and sheet for deep drawing applications shall havean average grain size not larger thanASTM No.5(Note 2)andno more than 10%of the grains shall be larger than No.5when measured in accordance with Test Methods E112.Formaterials less than 0.005 in.(0.13 mm)in thickness the grainsize shall be such that there are no less than 4 grains across thethickness.NOTE2This corresponds to a grain size of 0.065 mm or 16 grains/in.of image of 100.1This specification is under the jurisdiction of ASTM Committtee F01 onElectronics and is the direct responsibility of Subcommittee F01.03 on MetallicMaterials.Current edition approved July 1,2012 Published August 2012.Originallyapproved in 1977.Last previous edition approved in 2009 as F3096(2009).DOI:10.1520/F0030-96R12.2For 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 8.Surface Finish8.1 The standard surface finishes available shall be thoseresulting from the following operations:8.1.1 Hot-rolling,8.1.2 Forging,8.1.3 Centerless grinding(rod),8.1.4 Belt polishing,8.1.5 Cold rolling,and drawing,and8.1.6 Wire drawing.9.Thermal Expansion Characteristics9.1 The average linear coefficients of thermal expansionshall be within the limits specified in Table 2.10.Test for Thermal Expansion10.1 Determine the thermal expansion characteristics with aprecision dilatometer after heating the specimen as follows:10.1.1 Heat the specimen in a hydrogen atmosphere for 1 hat 900C and then cool it from 900 to 200C at a rate notexceeding 5C/min.10.1.2 The thermal expansion properties are determined inaccordance with Test Method E228.10.2 The thermal expansion match between the alloy and aglass may be evaluated by testing the assembly