1、Designation: F79 69 (Reapproved 2015)Standard Specification forType 101 Sealing Glass1This standard is issued under the fixed designation F79; the number immediately following the designation indicates the year of originaladoption or, in the case of revision, the year of last revision. A number in p
2、arentheses 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 101 sealing glass for usein electronic applications.NOTE 1This specification is primarily intended to consider glas
3、s asmost generally used, this is, glass in its transparent form as normallyencountered in fabricating electronic devices. X1.3 lists sealing metals andalloys that are compatible with this glass. Type 101 glass in other formssuch as powdered, crushed, sintered, fibrous, etc. are excluded. Therequirem
4、ents of this specification, as applied to these forms, must beestablished in 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 GlassC598 Test Method
5、 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 Significant Digits in Test
6、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-SealF140 Practice for Making Reference Glass-Metal Butt Sealsand Testing for Expansion Characterist
7、ics 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 Form,3.1.2 Type of glass,3.1.3
8、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):Major Constituents Weight %Silica (SiO2) 56.0Alumina (Al2O3)1.5Soda (Na2O) 4.0Potash (K2O) 8.5Lead oxide (PbO) 29.0Antimony tri
9、oxide (Sb2O3) 1.0, maxArsenic trioxide (As2O3) 1.0, maxHalogens 0.2, maxNOTE 2Major constituents may be adjusted to give the desiredelectrical and physical properties to the glass. However, no change shall bemade that alters any of these properties without due notification of, andapproval by, the us
10、er.5. Physical Properties5.1 The material shall conform to the physical propertiesprescribed in Table 1. For electrical properties see Table 2 andits Footnote A.6. Workmanship, Finish, and Appearance6.1 The glass shall have a finish that ensures smooth, evensurfaces and freedom from cracks, checks,
11、bubbles, and otherflaws of a character detrimental to the strength or life of thecomponent or device for which its use is intended.7. Test Methods7.1 Softening PointSee Test Method C338.7.2 Annealing PointSee Test Methods C336 or C598.7.3 Thermal Expansion CoeffcientPretreat the specimenby heating t
12、o 10C above the annealing point and hold it at thattemperature for 15 min; then cool it from that temperature to1This specification is under the jurisdiction of ASTM Committee C14 on Glassand Glass Products and is the direct responsibility of Subcommittee C14.04 onPhysical and Mechanical Properties.
13、Current edition approved May 1, 2015. Published May 2015. Originallyapproved in 1967. Last previous edition approved in 2010 as F79 69 (2010). DOI:10.1520/F0079-69R15.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual
14、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 States1100C at a rate of 2 to 5C/min. The cooling rate below 100Cis optional. Place the
15、 specimen in the dilatometer and deter-mine the mean coefficient of linear thermal expansion for the 0to 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 temper
16、ature for 15 min; then cool at a rate offrom 1.0 to 1.5C/min to a temperature below 200C. The rateof cooling 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 a
17、nd calculate the mean coefficient oflinear thermal contraction between a point 15C below theannealing point 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 asse
18、mbly in accordance with Practices F14,F140,orF144.8. Test Results8.1 Observed or calculated 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 thesp
19、ecified limit.9. Investigation of Claims9.1 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.10. Packaging and Package Marking10.1 Packing shall
20、 be determined by the form in which thismaterial shall be supplied and shall be subject to agreementbetween the manufacturer and the purchaser.10.2 The material as furnished under this specification shallbe identified by the name or symbol of the manufacturer. Thelot size for determining compliance
21、with the requirements ofthis specification shall be one days production.11. Keywords11.1 glass; sealingAPPENDIX(Nonmandatory Information)X1. ADDITIONAL INFORMATIONX1.1 Physical PropertiesThe physical properties aslisted in Table X1.1, in addition to those included as require-ments of the specificati
22、on, are presented for guidance innegotiating with a specific vendor for their imposition whenparticularly appropriate. These criteria are not included withinthe specification because their values are averages of resultsobtained by various methods, no one of which is presentlyagreed upon by the glass
23、 industry as a whole.X1.2 Typical Values for the Mean Coeffcient of LinearThermal ContractionTypical values for the mean coefficientof linear thermal contraction of Type 101 glass are given inTable X1.2 for information only. These apply to a specimen ofTABLE 1 Physical RequirementsProperty ASTM Test
24、 MethodAConditionAValueSoftening point C338 sec 7.1 630 10CAnnealing point C336 or C598 sec 7.2 435 10CThermal expansion coefficient E228 sec 7.3 8.95 0.20 ppm/C0 to 300CContraction coefficient E228 sec 7.4 10.10 0.20 ppm/C(annealing point minus15 to 30C)ATest methods and conditions are detailed in
25、the appropriately referenced section of this specification.TABLE 2 Electrical PropertiesAPropertyASTM TestMethodCondition Value (Typical)Volume resistivity (dc) D257B25C250C350Clog10R (cm) 17.0log10R (cm) 9.9log10R (cm) 7.8Dielectric constant (1 MHz) D150B20C 6.7Dissipation factor (1 MHz) D150 20C 0
26、.0014Loss index (1 MHz) D150 20C 0.009AWhile having no influence on the sealing capability of the glass, electricalproperties are included as information pertaining to the effect of the material on theperformance of electronic devices in which it may be used.BTest methods are cited in Section 2 of t
27、his specification.TABLE X1.1 Physical PropertiesProperty Condition Unit Value ToleranceDensity . g/cm33.05 0.02Refractive index sodium (D) line . 1.56 0.02Birefringence, constantor stress-optical. 1012Pa13.0 0.2coefficientF79 69 (2015)2the glass when cooled during the thermal contraction test (see7.
28、4) from a point above the maximum temperature shown to30C at a rate not exceeding 1.5C/min.X1.3 Type 101Compatible Metals and Sealing AlloysThe thermal expansion characteristics of Type 101 sealingglass are generally satisfactory for sealing to the metals andalloys in Table X1.3.ASTM International t
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30、responsibility.This standard 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 addr
31、essed to ASTM International 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
32、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 (
33、phone), 610-832-9555 (fax), 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:/ X1.2 Typical Contraction Coeffici
34、entsTemperature Range, CMean Contraction Coefficient,m/m/C or ppm/C100 to 30 8.6200 to 30 8.9300 to 30 9.2400 to 30 9.7420 to 30 10.1450 to 30 10.8TABLE X1.3 Metals and Sealing Alloys Compatible with Type 101GlassMetal or Alloy ASTM SpecificationPlatinum .Titanium .Dumet F29, Dumet Wire for Glass to MetalSeal Applications52 Alloy41-6 AlloyF30, Iron-Nickel Sealing AlloysF31,42 % Nickel-6 % Chromium-IronSealing AlloyF79 69 (2015)3
