1、Designation: F1315 00 (Reapproved 2014)F1315 17Standard Test Method forDensity of a Sheet Gasket Material1This standard is issued under the fixed designation F1315; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last r
2、evision. 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 test method covers a procedure for determining the density of a gasket material.1.2 The values stated in SI units are t
3、o be regarded as the standard. The values given in parentheses are for information only.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices
4、 and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test MethodF104 Classification System for Nonmetallic Gasket Materials3. Summary of Test Method3.1 A
5、 die-cut specimen is conditioned. Thickness, weight, and area are measured, and the density is calculated and reported.4. Significance and Use4.1 Density is an important property of a gasket material, since it has an inverse relationship to the void volume of the material.Density is often used in a
6、specification, since relationships to sealability, compressibility, creep relaxation, and tensile strength canbe found for a given gasket grade.4.2 Density is a measurement of the mass to the volume ratio and therefore easily determined with a weight scale and thicknessmeasuring device. This test me
7、thod requires from 1 h to two days of sample conditioning, which is necessary to achieve a highlevel of precision, but which detracts from its usefulness as a production test method. Where it must be modified for manufacturingcontrol, it is recommended that thickness and weight measurement methods b
8、e adhered to strictly.5. Interferences5.1 Moisture adds to the weight of most gasket specimens, and may cause the material to swell. Proper conditioning of thespecimen should control moisture as a variable.6. Apparatus6.1 ThicknessA thickness measurement device actuated by a dead weight load as spec
9、ified in Table 1. The presser foot shallbe 6.40 6 0.13 mm (0.252 6 0.005 in.) in diameter. The device shall be capable of reading within 1 % of the thickness beingmeasured. The anvil shall have a diameter not less than that of the presser foot.6.2 WeightAn analytical balance accurate to 61 % of the
10、specimen weight.7. Specimen Conditioning7.1 Specimen shall be conditioned in accordance with their classification as specified in Classification System F104 prior totesting.1 This test method is under the jurisdiction of ASTM Committee F03 on Gaskets and is the direct responsibility of Subcommittee
11、F03.20 on Mechanical Test Methods.Current edition approved March 1, 2014Feb. 1, 2017. Published April 2014February 2017. Originally approved in 1990. Last previous edition approved in 20062014 asF1315 00 (2006).(2014). DOI: 10.1520/F1315-00R14.10.1520/F1315-17.2 For referencedASTM standards, visit t
12、heASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard a
13、n indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is t
14、o be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States18. Test Specimen8.1 Three specimens are to be measured.8.2 Specimen size and shape is left to the discretion of the tester. In no case, however, sho
15、uld the area of the specimen be lessthan 25 cm2 (4 in.2). The area of the specimen shall be measured accurate to 61 %. For this reason a die cut specimen is required.9. Procedure9.1 Remove the specimens one at a time from the conditioning chamber if not in a properly conditioned room, and weigh onth
16、e analytical balance, recording the weight.9.2 Measure area of specimen.9.3 Measure the thickness of the specimen using the proper size presser foot and dead weight as specified in Table 1. Thenumber of points to be measured will be dependent upon the specimen size and shape, but a minimum of five p
17、oints must bemeasured and the average used. Record the thickness.10. Calculation10.1Density g/cm3!5W 310T 3A (1)where:W = weight of specimen, g,T = thickness of specimen, mm, andA = area of specimen, cm2.11. Report11.1 Report the following information:11.1.1 Specimen label (for example, grade design
18、ation, batch number, etc.).11.1.2 Specimen thickness.11.1.3 Specimen area.11.1.4 Specimen weight.11.1.5 Manufacturing date, if known.11.1.6 Test date.11.1.7 Density in kg/m3 (g/cm3).), average of 3 specimens tested per 8.1.11.1.8 TestersTesters identification.TABLE 1 Applied PressuresType of Materia
19、l (FirstNumeral of Six DigitNumber (from F104)Pressure on Specimen,kPa (psi)Total Force on PresserFoot, N (oz) (refer-ence)1, 5, or 7 80.3 6.9 (11.5 1.0) 2.50 (9.0)2 or 4 35 6.9 (5.1 1.0) 1.11 (4.0)3 55 6.9 (8.0 1.0) 1.75 (6.3)0 or 9A 55 6.9 (8.0 1.0) 1.75 (6.3)A Unless otherwise specified on engine
20、ering drawing or other supplement to thistest method.TABLE 2 Precision DataMaterialDesignationMean Valuekg/m3( 103)Within LaboratoryBetweenLaboratoriesS CV% CV%A 0.3972 0.0106 2.68 3.11B 1.0133 0.0062 0.61 1.44C 1.1148 0.0201 1.80 2.88D 1.6232 0.0135 1.22 1.83E 1.3465 0.0198 1.00 1.97F1315 17212. Pr
21、ecision and Bias12.1 PrecisionThe inherent variability for this test method was determined by an interlaboratory test program using fivematerials in 12 laboratories with five measurements per material. The data were analyzed using Practice E691 for statisticalinferences. Results are listed in Table
22、2.12.2 BiasSince there is no accepted reference material suitable for determining bias for the procedure in this test method formeasuring density, no statement on bias is being made.13. Keywords13.1 density; gasket material; sheetASTM International takes no position respecting the validity of any pa
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25、ents 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 standard is copyrighte
26、d 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), 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:/ 173
