1、Designation:C30310(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 of rev
2、ision,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 corrected 5.2
3、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 mathematicalconversions to SI
4、 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 practices and determine
5、 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 ThermalInsulation LotsC870
6、 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 received”condition(see
7、 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 environment of 73F 6 4F(23C 6 2C)an
8、d 50 65%relative humidity per Practice C870 shall be used.Fromthe measured mass and measured dimensions,the density ofthe product is calculated.NOTE1Some materials may contain volatiles such as moisture whenmanufactured or shipped,or both.5.Significance and Use5.1 Dimensional measurements of the pro
9、duct 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 in determining compliance of a product
10、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 itsdensity.In order to design for equipment support
11、s,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 for measuring dimensions to 6 1.0%(seeNote 2).6.2 Instr
12、ument,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 ThermalInsulation and is the direct responsibility of Subcommittee C16.32 o
13、n 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,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service a
14、t 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 19428-2959.United States1 by 25 mm).This instrument shall be suitable for measurin
15、g 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 depth gage per Test Methods C167.6.4 Scales,accurate to within 0.0lb(5g)or within 1
16、%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 0.1%.6.5 Drying Oven.NOTE2Generally 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 m
