1、Designation: C303 10 (Reapproved 2016)1Standard Test Method forDimensions and Density of Preformed Block andBoardType Thermal Insulation1This standard is issued under the fixed designation C303; the number immediately following the designation indicates the year oforiginal adoption or, in the case o
2、f revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1NOTEEditorially cor
3、rected 5.2 and 6.2 in November 2016.1. Scope1.1 This test method covers determination of the dimensionsand density of block and board insulation as defined inTerminology C168.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconv
4、ersions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practic
5、es and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C167 Test Methods for Thickness and Density of Blanket orBatt Thermal InsulationsC168 Terminology Relating to Thermal InsulationC390 Practice for Sampling and Acceptance of ThermalIn
6、sulation LotsC870 Practice for Conditioning of Thermal Insulating Ma-terials3. Terminology3.1 GeneralTerminology C168 shall be considered asapplicable to the terms used in this test method.4. Summary of Test Method4.1 The material shall be tested in the “dry” condition or inthe “as manufactured and
7、received” condition (see Note 1) butthe procedure must be consistent with that as given in thematerial specification. If the material is to be tested in the “dry”condition it shall be dried to constant mass. If the materialspecification does not give conditioning instructions, a condi-tioning enviro
8、nment of 73F 6 4F (23C 6 2C) and 50 65 % relative humidity per Practice C870 shall be used. Fromthe measured mass and measured dimensions, the density ofthe product is calculated.NOTE 1Some materials may contain volatiles such as moisture whenmanufactured or shipped, or both.5. Significance and Use5
9、.1 Dimensional measurements of the product thermal in-sulation are essential in determining compliance of a productwith specification limits. Dimensional measurements of vari-ous test specimens are also required by the specific testmethod.5.2 Density measurements of the product insulation areuseful
10、in determining compliance of a product with specifica-tion limits, and in providing a relative gage of product weights.For any one kind of insulation, some important physical andmechanical properties, such as thermal conductivity, heatcapacity, strength, etc., bear a specific relationship with itsde
11、nsity. In order to design for equipment supports, check thematerial for the “as received density” where the moisturecontent of the product as received and then installed has thepotential to be consequential.6. Apparatus6.1 Steel measure, (ruler or tape), graduated in millimetresor better, suitable f
12、or measuring dimensions to 6 1.0 % (seeNote 2).6.2 Instrument, such as caliper, dial gage, or micrometergraduated in millimetres or better, with a minimum platediameter of 6 mm, and a maximum plate of 1.0 by 1.0 in. (251This test method is under the jurisdiction ofASTM Committee C16 on ThermalInsula
13、tion and is the direct responsibility of Subcommittee C16.32 on MechanicalProperties.Current edition approved Oct. 15, 2016. Published November 2016. Originallypublished as approved in 1952. Last previous edition approved in 2010 asC303 10. DOI: 10.1520/C0303-10R16E01.2For referenced ASTM standards,
14、 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 1942
15、8-2959. United States1by 25 mm). This instrument shall be suitable for measuring thedimensions to 61.0 %. This instrument shall not cause defor-mation of the product when measuring it. Ensure that thepressure exerted by this measuring plate does not exceed 0.040psi or 5psf (0.245 kPa).6.3 Pin probe
16、depth gage per Test Methods C167.6.4 Scales, accurate to within 0.0lb (5g) or within 1 % of thespecimen mass (whichever is less). If the material specificationcalls for a greater accuracy, this shall take precedence. If thesamples are to be conditioned per Practice C870 the accuracyshall be within 0
17、.1 %.6.5 Drying Oven.NOTE 2Generally a rule or instrument is used for dimensions less thana metre and a tape used for longer dimensions.7. Test Specimen7.1 The test specimens shall be of commercial size when-ever practicable, but shall not be less than 4 in. wide by 8 in.long (100 mm wide by 200 mm
18、long), except if required by aspecific test method. The sample size shall be determined inaccordance with the material specification. If not specifiedthere, then in accordance with Practice C390 test at least fivespecimens.7.2 When less than full commercial size pieces are testedends and sides shall
19、 be trimmed by cutting or fabricating togive a block with parallel sides and ends with only top andbottom surfaces original.8. Conditioning8.1 If the specimens are to be conditioned, condition thespecimens to constant mass in accordance with Practice C870.Consult the materials specification for any
20、specific condition-ing requirements.8.2 If the specimens are not to be conditioned, test as soonas possible.9. Procedure9.1 After conditioning, measure the width and length of thespecimen to the nearest 1 mm unless different tolerances aregiven in the material specification, or there are differentme
21、asurement tolerances within a specific test method to beapplied.9.2 If the pin probe depth gage is used the measurementsshall be per 8.2 of Test Methods C167.9.3 The thickness shall be measured along the edges in atleast four different locations, generally near the four cornersapproximately 1-3 in.
22、(25-75 mm) from the corner, as shown inFig. 1 for locations A,B,C, and D. The length and width shallbe measured in at least two locations. At approximately alongthe A-B and C-D lines for the width and the A-D and B-C linesfor the length. For specimens larger than 10 ft2(1 m2) in area,there shall be
23、an additional two thickness measurements foreach additional 10 ft2(1 m2) in size. These would be in thecentral section of the specimen as shown by locations E and F.There shall also be an additional length or width measurementfor each additional meter increase in length or width over 3 ft(1 m) long.
24、 These measurement positions shall be spacedapproximately equally within the original measurement areadefined by A,B,C,D.9.4 Measure and record the mass.10. Calculation10.1 Calculate the volume of the specimen from the averagewidth, length, and thickness as follows:Volume, Cu.ft. 5 length, in. 3widt
25、h, in. 3thickness, in./1728 (1)Volume, m35 length, mm 3width, mm 3thickness, mm 31029!10.2 Calculate the density of the specimen from the massand calculated volume as follows:Density, kg/m35mass, kgvolume, m3(2)density, lb/ft35 density, kg/m330.0624 (3)11. Report11.1 Report the average density of th
26、e sample in pounds percubic foot or kilograms per cubic metre. Report density to threesignificant figures.11.2 Report the dimensions. Report dimensions to the near-est millimetre, or as requested.11.3 Material identification including manufacturers type/grade designation and lot number or date of ma
27、nufacture.11.4 Date testing was performed.11.5 Specimen conditioning used or “tested as received.”12. Precision and Bias312.1 Precision of the density test method was determined bya round robin with six participating laboratories. The producttested was mineral fiber board insulation at a density of2
28、.98 lb/ft3(47.74 kg/m3).12.2 Precision results:95% Repeatability Limit (2.8Sr) = 1.7%95% Reproducibility Limit (2.8SR) = 3.3%12.3 BiasNo information can be presented on the bias ofthe procedure in this test method because no material having anaccepted reference value is available.13. Keywords13.1 bl
29、ock; board; density; dimensions ; thermal insulation;thermal insulating materialsblock and board3Supporting data have been filed at ASTM Headquarters. Request ResearchReport RR:C16-1025.C303 10 (2016)12ASTM International takes no position respecting the validity of any patent rights asserted in conn
30、ection 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 is subject to revision at any time by the respons
31、ible 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 Headquarters. Your comments will receive careful c
32、onsideration 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 copyrighted by ASTM International, 10
33、0 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:/ 1 Specimen MeasurementC303 10 (2016)13
