1、Designation: F105 72 (Reapproved 2015Standard Specification forType 58 Borosilicate Sealing Glass1This standard is issued under the fixed designation F105; the number immediately following the designation indicates the year of originaladoption or, in the case of revision, the year of last revision.
2、A number in parentheses indicates the year of last reapproval. A superscriptepsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers Type 58 borosilicate sealingglass for use in electronic applications.NOTE 1This specification is primarily
3、intended to consider glass asmost generally used, that is, glass in its transparent form as normallyencountered in fabricating electronic devices. X1.3 refers to a sealingalloy that is compatible with this glass. Type 58 glass in other forms suchas powdered, crushed, sintered, fibrous, etc., are exc
4、luded. The require-ments of this specification, as applied to these forms, must be establishedin the raw glass prior to its conversion.2. Referenced Documents2.1 ASTM Standards:2C336 Test Method for Annealing Point and Strain Point ofGlass by Fiber ElongationC338 Test Method for Softening Point of G
5、lassC598 Test Method for Annealing Point and Strain Point ofGlass by Beam BendingD150 Test Methods for AC Loss Characteristics and Permit-tivity (Dielectric Constant) of Solid Electrical InsulationD257 Test Methods for DC Resistance or Conductance ofInsulating MaterialsE29 Practice for Using Signifi
6、cant Digits in Test Data toDetermine Conformance with SpecificationsE228 Test Method for Linear Thermal Expansion of SolidMaterials With a Push-Rod DilatometerF14 Practice for Making and Testing Reference Glass-MetalBead-SealF15 Specification for Iron-Nickel-Cobalt Sealing AlloyF140 Practice for Mak
7、ing 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 sh
8、all includethe following information:3.1.1 Form,3.1.2 Type of glass,3.1.3 Dimensions,3.1.4 Marking and packaging, and3.1.5 Certification (if required).4. Chemical Composition4.1 The typical chemical composition of this glass is asfollows (Note 2):Weight %Major Constituents:Silica (SiO2) 65.0Alumina
9、(Al2O3)7.5Boron oxide (B2O3) 18.0Soda (Na2O) 2.0Potash (K2O) 3.0Barium oxide (BaO) 3.0Minor Constituents:Lithium oxide (Li2O) 0.6Fluorine (F) 0.6, maxReducible oxides (Note 3) 0.05, maxNOTE 2Major constituents may be adjusted to give the desiredelectrical and physical properties to the glass. Howeve
10、r, no change shall bemade that alters any of these properties without due notification of, andapproval by, the user.NOTE 3Total of arsenic trioxide (As2O3), antimony trioxide (Sb2O3),and lead oxide (PbO).5. Physical Requirements5.1 The material shall conform to the physical propertiesprescribed in T
11、able 1. For electrical properties see Table 2, andits Footnote A.6. Finish and Workmanship6.1 The glass shall have a finish that ensures smooth, evensurfaces and freedom from cracks, checks, bubbles, and otherflaws of a character detrimental to the strength or life of thecomponent or device for whic
12、h its use is intended.7. Test Methods7.1 Softening PointTest Method C338.7.2 Annealing PointTest Method C336 and Test MethodC598.1This specification is under the jurisdiction of ASTM Committee C14 on Glassand Glass Products and is the direct responsibility of Subcommittee C14.04 onPhysical and Mecha
13、nical Properties.Current edition approved May 1, 2015. Published May 2015. Originallyapproved in 1968. Last previous edition approved in 2010 as F105 72 (2010).DOI: 10.1520/F0105-72R15.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceast
14、m.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 States17.3 Thermal Expansion Coeffcient Pretreat the specimenby heati
15、ng to 10C above the annealing point and hold it at thattemperature for 15 min; then cool it from that temperature to100C at a rate of 2 to 5C/min. The cooling rate below 100Cis optional. Place the specimen in the dilatometer and deter-mine the mean coefficient of linear thermal expansion for the 0to
16、 300C range in accordance with ProcedureAof Test MethodE228.7.4 Contraction CoeffcientHeat the specimen in a vitre-ous silica dilatometer to 20C above the annealing point andhold it at that temperature for 15 min; then cool at a rate offrom 1.0 to 1.5C/min to a temperature below 200C. The rateof coo
17、ling from the point below 200 to 100C shall not exceed5C/min. The rate of cooling from 100C to room temperatureis optional. During this cooling schedule, determine the ther-mal contraction curve and calculate the mean coefficient oflinear thermal contraction between a point 15C below theannealing po
18、int and 30C in accordance with Procedure B ofTest Method E228.7.5 Bead Seal TestThe thermal contraction match betweenthe glass and a sealing alloy may be determined by preparingand testing an assembly in accordance with Practice F14,Practice F140, or Practice F144.8. Test Results8.1 Observed or calc
19、ulated values obtained frommeasurements, tests, or analysis shall be rounded in accordancewith the rounding method of Practice E29, to the nearest unitin the last right-hand place of figures used in expressing thespecified limit.9. Packaging and Marking9.1 Packaging shall be determined by the form i
20、n which thismaterial shall be supplied and shall be subject to agreementbetween the manufacturer and the purchaser.9.2 The material as furnished under this specification shallbe identified by the name or symbol of the manufacturer. Thelot size for determining compliance with the requirements ofthis
21、specification shall be one days production.10. Investigation of Claims10.1 Where any material fails to meet the requirements ofthis specification, the material so designated shall be handled inaccordance with the agreement mutually acceptable to themanufacturer and the purchaser.TABLE 1 Physical Req
22、uirementsProperty ASTM Test MethodACondition ValueSoftening point C338 see 7.1 715 10CAnnealing point C336 or C598 see 7.2 480 10CThermal expansion coefficient E228 see 7.30 to 300C4.65 0.20 ppm/CContraction coefficient E228 see 7.4(annealing point minus 15 to 30C)5.8 0.20 ppm/CATest methods and con
23、ditions are detailed in the appropriately referenced section of this specification.TABLE 2 Electrical PropertiesAPropertyASTM TestMethodCondition,CTypical ValueVolume resistivity (dc) D257 25 log R (cm)17.0250 log R (cm)9.1350 log R (cm)7.3Dielectric constant (1 MHz) D150 20 5.0Dissipation factor (1
24、 MHz) D150 20 0.0027Loss index (1 MHz) D150 20 0.014AWhile having no influence on the sealing capability of the glass, electricalproperties are included as information pertaining to the effect oaf the material onthe performance of electronic devices in which it may be used.F105 72 (20152APPENDIX(Non
25、mandatory Information)X1. ADDITIONAL INFORMATIONX1.1 Physical PropertiesThe physical properties listed inTable X1.1, in addition to those included as requirements of thespecification, are presented for guidance in negotiating with aspecific vendor for their imposition when particularly appro-priate.
26、 These criteria are not included within the specificationbecause their values are averages of results obtained by variousmethods, no one of which is presently agreed upon by the glassindustry as a whole.X1.2 Typical Values for the Mean Coeffcient of LinearThermal ContractionTypical values for the me
27、an coefficientof linear thermal contraction of Type 58 borosilicate glass aregiven in Table X1.2 for information only. These apply to aspecimen of the glass when cooled during the thermal contrac-tion test (see 7.4) from a point above the maximum tempera-ture shown to 30C at a rate not exceeding 1.5
28、C/min.X1.3 Compatible Metals and Sealing Alloys The thermalexpansion characteristics of Type 58 sealing glass are generallysatisfactory for sealing to the alloy covered by SpecificationF15, (nominal composition: 29 % nickel, 17 % cobalt, and53 % iron).ASTM International takes no position respecting
29、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 validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard
30、 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 comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International
31、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
32、 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),
33、or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ X1.1 Physical PropertiesProperty Condition Unit Value Toleran
34、ceDensity . g/cm32.27 0.02Refractive index Sodium D Line . 1.48 0.02Birefringence con- . 1012Pa13.8 0.2stant or stress-optical coefficientTABLE X1.2 Typical Contraction CoefficientsTemperature Range, CMean Contraction Coefficient,m/m C or ppm/C100 to 30 4.5200 to 30 4.6300 to 30 4.7400 to 30 4.9420 to 30 5.0450 to 30 5.5480 to 30 6.2F105 72 (20153
