1、Designation: F 79 69 (Reapproved 2005)Standard Specification forType 101 Sealing Glass1This standard is issued under the fixed designation F 79; 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
2、 parentheses indicates the year of last reapproval. A superscriptepsilon (e) 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 g
3、lass 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. Therequi
4、rements of this specification, as applied to these forms, must beestablished in the raw glass prior to its conversion.2. Referenced Documents2.1 ASTM Standards:2C 336 Test Method for Annealing Point and Strain Point ofGlass by Fiber ElongationC 338 Test Method for Softening Point of GlassC 598 Test
5、Method for Annealing Point and Strain Point ofGlass by Beam BendingD 150 Test Methods for AC Loss Characteristics and Per-mittivity (Dielectric Constant) of Solid Electrical Insulat-ing MaterialsD 257 Test Methods for DC Resistance or Conductance ofInsulating MaterialsE29 Practice for Using Signific
6、ant Digits in Test Data toDetermine Conformance with SpecificationsE 228 Test Method for Linear Thermal Expansion of SolidMaterials with a Vitreous Silica Dilatometer3F14 Practice for Making and Testing Reference Glass-Metal Bead-SealF 140 Practice for Making Reference Glass-Metal ButtSeals and Test
7、ing for Expansion Characteristics by Polari-metric MethodsF 144 Practice for Making Reference Glass-Metal Sand-wich Seal and Testing for Expansion Characteristics byPolarimetric Methods3. Ordering Information3.1 Orders for material under this specification shall includethe following information:3.1.
8、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):Major Constituents Weight %Silica (SiO2) 56.0Alumina (Al2O3)1.5Soda (Na2O) 4.0Potash (K2O) 8.5
9、Lead oxide (PbO) 29.0Antimony trioxide (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 notifi
10、cation of, andapproval by, the user.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
11、and freedom from cracks, checks, 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 C 338.7.2 Annealing PointSee Test Method C 336 or TestMethod C 598.1This specification
12、 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.Current edition approved Sept. 1, 2005. Published October 2005. Originallyapproved in 1967. Last previous edition approved in 2000
13、as F 79 67 (2000).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.3Withdrawn.1Copyright ASTM International, 1
14、00 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7.3 Thermal Expansion Coeffcient Pretreat the specimenby heating 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 cool
15、ing rate below 100Cis optional. Place the specimen in the dilatometer and deter-mine the mean coefficient of linear thermal expansion for the 0to 300C range in accordance with ProcedureAof Test MethodE 228.7.4 Contraction CoeffcientHeat the specimen in a vitre-ous silica dilatometer to 20C above the
16、 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 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,
17、determine the ther-mal contraction curve and calculate the mean coefficient oflinear thermal contraction between a point 15C below theannealing point and 30C in accordance with Procedure B ofTest Method E 228.7.5 Bead Seal TestThe thermal contraction match be-tween the glass and a sealing alloy may
18、be determined bypreparing and testing an assembly in accordance with PracticesF 14, F 140, or F 144.8. Test Results8.1 Observed or calculated values obtained from measure-ments, tests, or analysis shall be rounded in accordance withthe rounding method of Practice E29, to the nearest unit in thelast
19、right-hand place of figures used in expressing the specifiedlimit.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
20、.10. Packaging and Package Marking10.1 Packing shall 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 m
21、anufacturer. Thelot size for determining compliance 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 t
22、o those included as require-ments of the specification, 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,
23、no one of which is presentlyagreed upon by the glass industry as a whole.TABLE 1 Physical RequirementsProperty ASTM Test MethodAConditionAValueSoftening point C 338 sec 7.1 630 6 10CAnnealing point C 336 or C 598 sec 7.2 435 6 10CThermal expansion coefficient E 228 sec 7.3 8.95 6 0.20 ppm/C0 to 300C
24、Contraction coefficient E 228 sec 7.4 10.10 6 0.20 ppm/C(annealing point minus15 to 30C)ATest methods and conditions are detailed in the appropriately referenced section of this specification.TABLE 2 Electrical PropertiesAPropertyASTM TestMethodCondition Value (Typical)Volume resistivity (dc) D 257B
25、25C250C350Clog10R (Vcm) 17.0log10R (Vcm) 9.9log10R (Vcm) 7.8Dielectric constant (1 MHz) D 150B20C 6.7Dissipation factor (1 MHz) D 150 20C 0.0014Loss index (1 MHz) D 150 20C 0.009AWhile having no influence on the sealing capability of the glass, electricalproperties are included as information pertai
26、ning 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 this specification.TABLE X1.1 Physical PropertiesProperty Condition Unit Value ToleranceDensity . g/cm33.05 60.02Refractive index sodium (D) line . 1.56 60.02Bir
27、efringence, constantor stress-optical. 1012Pa13.0 60.2coefficientF 79 69 (2005)2X1.2 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
28、 specimen ofthe glass when cooled during the thermal contraction test (see7.4) 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 satisfa
29、ctory for sealing to the metals and alloys in Table X1.3.ASTM International takes no position respecting 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 paten
30、t rights, and the riskof infringement of such rights, are entirely their own 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 eithe
31、r for revision of this standard or for additional standardsand should be addressed 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 he
32、aring you shouldmake your views known to the ASTM Committee on Standards, at 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 standar
33、d may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).TABLE X1.2 Typical Contraction CoefficientsTemperature Range, CMean Contraction Coefficient,m/m/C or ppm/C100 to 30 8.6200 t
34、o 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 F 29, Dumet Wire for Glass to Metal Seal Applications52 Alloy41-6 AlloyF 30, Iron-Nickel Sealing AlloysF 31, 42 % Nickel-6 % Chromium-Iron Sealing AlloyF 79 69 (2005)3
