1、Designation: C610 091Standard Specification forMolded Expanded Perlite Block and Pipe ThermalInsulation1This standard is issued under the fixed designation C610; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revi
2、sion. 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 Department of Defense.1NOTETable 2 was editorially corrected in March 2010.1. Sc
3、ope1.1 This specification covers molded expanded perliteblock, fittings, and pipe thermal insulation intended for use onsurfaces with temperatures between 80 to 1200F (27 to649C).1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematical
4、conversions to SI units that are provided for information onlyand are not considered standard.1.3 When the installation or use of thermal insulationmaterials, accessories, and systems may pose safety or healthproblems, the manufacturer shall provide the user appropriatecurrent information regarding
5、any known problems associatedwith the recommended use of the companys products and shallalso recommend protective measures to be employed in theirsafe utilization. The following safety caveat applies only to thetest methods portion of this specification: This standard doesnot purport to address all
6、of the safety concerns, if any,associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory limitations priorto use.2. Referenced Documents2.1 ASTM Standards:2C165 Test Method for Measu
7、ring Compressive Propertiesof Thermal InsulationsC168 Terminology Relating to Thermal InsulationC177 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate ApparatusC203 Test Methods for Breaking Load and Flexural Prop-erties of Bloc
8、k-Type Thermal InsulationC302 Test Method for Density and Dimensions of Pre-formed Pipe-Covering-Type Thermal InsulationC303 Test Method for Dimensions and Density of Pre-formed Block and BoardType Thermal InsulationC335 Test Method for Steady-State Heat Transfer Proper-ties of Pipe InsulationC356 T
9、est Method for Linear Shrinkage of PreformedHigh-Temperature Thermal Insulation Subjected to Soak-ing HeatC390 Practice for Sampling and Acceptance of ThermalInsulation LotsC411 Test Method for Hot-Surface Performance of High-Temperature Thermal InsulationC421 Test Method for Tumbling Friability of
10、PreformedBlock-Type and Preformed Pipe-Covering-Type ThermalInsulationC450 Practice for Fabrication of Thermal Insulating FittingCovers for NPS Piping, and Vessel LaggingC518 Test Method for Steady-State Thermal TransmissionProperties by Means of the Heat Flow Meter ApparatusC585 Practice for Inner
11、and Outer Diameters of ThermalInsulation for Nominal Sizes of Pipe and TubingC795 Specification for Thermal Insulation for Use in Con-tact with Austenitic Stainless SteelC1045 Practice for CalculatingThermalTransmission Prop-erties Under Steady-State ConditionsC1058 Practice for Selecting Temperatur
12、es for Evaluatingand Reporting Thermal Properties of Thermal InsulationC1616 Test Method for Determining the Moisture Contentof Organic and Inorganic Insulation Materials by WeightE84 Test Method for Surface Burning Characteristics ofBuilding Materials1This specification is under the jurisdiction of
13、 ASTM Committee C16 onThermal Insulation and is the direct responsibility of Subcommittee C16.20 onHomogeneous Inorganic Thermal Insulations.Current edition approved May 1, 2009. Published May 2009. Originallyapproved in 1967. Last previous edition approved in 2007 as C610 07. DOI:10.1520/C0610-09.2
14、For 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.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C
15、700, West Conshohocken, PA 19428-2959, United States.E136 Test Method for Behavior of Materials in a VerticalTube Furnace at 750C3. Terminology3.1 GeneralTerminology C168 shall be considered asapplying to the terms used in this specification.3.2 Definitions of Terms Specific to This Standard:3.2.1 c
16、ompositionmolded expanded perlite block, fitting,and pipe thermal insulation shall be composed principally ofexpanded perlite and silicate binders may contain reinforcingfibers.4. Standard Shapes, Sizes, and Dimensions4.1 Molded expanded perlite block, fitting, and pipe thermalinsulation shall be as
17、 follows:4.1.1 BlockBlock shall be furnished in lengths of either36 or 39.37 in. (914 or 1000 mm), widths of 6 in. (152 mm),12 in. (305 mm), 18 in. (457 mm), or 24 in. (610 mm), and inthickness from 112 to 6 in. (38 to 152 mm) in increments of12in. (13 mm).4.1.2 Pipe InsulationMolded expanded perlit
18、e pipe insu-lation shall be supplied either as hollow cylindrical shapes splitin half lengthwise (in a plane including the cylindrical axis) orcurved segments. The pipe insulation shall be furnished insections or segments in lengths of either 36 or 39.37 in. (914 or1000 mm) to fit standard sizes of
19、pipe and tubing, and innominal thickness from 1 to 4 in. (25 to 102 mm) in12-in.(13-mm) increments. Inner and outer diameters of multilayerconstruction may be specified. Inner and outer diameters shallbe in accordance with those standard dimensions specified inPractice C585. Since outside diameter t
20、olerances may bedifferent under individual manufacturing processes, it may benecessary to have pipe insulation furnished in two or morelayers nested by the manufacturer. The purchaser shall consultthe manufacturer for specific requirements.4.1.3 FittingsMolded (expanded insulation fittings shallconf
21、orm to the inner and outer diameters in accordance withPractice C585. Mitered fittings shall be in accordance withPractice C450.5. Dimensional Tolerances5.1 GeneralThe average tolerances for length, width, andthickness shall comply with the requirements shown in Table 1.5.2 Pipe InsulationThe follow
22、ing additional tolerancesapply to perlite pipe insulation supplied as half sections:5.2.1 Fit and ClosureWhen fitted to the appropriate sizepipe, the longitudinal seam of the pipe insulation shall close towithin116 in. (1.6 mm) along the entire length of the section.5.2.2 ConcentricityThe inner bore
23、 of the pipe insulationshall be concentric with the outer cylindrical surface. Thedeviation from concentricity shall not exceed18 in. (3.2 mm)or 5 % of the wall thickness, whichever is greater.5.2.3 Half-Section BalanceThe plane formed by the splitbetween half sections shall include the cylindrical
24、axis. Devia-tion of the split plane from the cylinder axis over the 36 or39.37-in. (914 or 1000-mm) length shall not exceed18 in. (3.2mm).6. Workmanship, Finish, and Appearance6.1 Since some requirements for this material are not easilydefined by a numerical value, the insulation shall not havevisib
25、le defects that will adversely affect its service qualities.7. Physical Requirements7.1 The insulation shall conform to the physical require-ments in Table 2.8. Sampling8.1 The insulation shall be sampled in accordance withPractice C390. Specific provision for sampling shall be agreedupon between th
26、e purchaser and the supplier.9. Qualification Requirements9.1 The following requirements are generally employed forpurpose of initial material or product qualification:9.1.1 Flexural strength,9.1.2 Compressive strength,9.1.3 Surface burning characteristics,9.1.4 Linear shrinkage after soaking heat,9
27、.1.5 Water absorption after heat aging,9.1.6 Apparent thermal conductivity,9.1.7 Hot-surface performance,9.1.8 Stress corrosion cracking of austenitic stainless steel,and9.1.9 Weight loss by tumbling.10. Acceptance Requirements10.1 The following requirements are generally employedfor purposes of acc
28、eptance sampling of lots or shipments ofqualified products:10.1.1 Density,10.1.2 Dimensional tolerances,10.1.3 Workmanship, and10.1.4 Moisture content.11. Test Methods11.1 The properties enumerated in this specification shall bedetermined in accordance with the following test methods:11.1.1 Density:
29、11.1.1.1 Block InsulationTest Method C303.11.1.1.2 Pipe InsulationTest Method C302.11.1.2 Apparent Thermal Conductivity:11.1.2.1 Block InsulationTest Method C177 per PracticeC1058 large temperature difference method or Test MethodC518, using 112 612-in. (38 6 13-mm) thick specimens.11.1.2.2 Pipe Ins
30、ulationTest Method C335, using 112 612 in. (386 13-mm) thick specimens of pipe insulation assupplied for fit to 3-in. nominal iron pipe.TABLE 1 Dimensional TolerancesBlock PipeLength 618 in. (3.2 mm) 618 in. (3.2 mm)Width 618 in. (3.2 mm) .Thickness 618 in. (3.2 mm) 618 in. (3.2 mm)Inner Diameter .
31、in accordance with Practice C585Outer Diameter . in accordance with Practice C585C610 091211.1.2.3 GeneralDeterminations shall be made at fourmean temperatures within the temperature range in accordancewith Practice C1058. The results of these tests shall be used tocalculate thermal transmission pro
32、perties in accordance withPractice C1045.11.1.3 Linear Shrinkage After Heat SoakingRefer to TestMethod C356. The test temperature shall be 1200F (649C).11.1.4 Flexural Strength (Block Insulation Only) TestMethod C203, test 2in. (50mm) thick specimens.11.1.5 Compressive Strength (Block Insulation Onl
33、y)TestMethod C165. Test 2-in. (50-mm) thick specimens.11.1.6 Weight Loss by TumblingTest Method C421.11.1.7 Moisture ContentTest Method C1616. The valuereported should be the numerical average of the calculatedmoisture content of four specimens rounded to the nearest 1 %.11.1.8 Water Absorption Afte
34、r Heat Aging:11.1.8.1 ScopeThis test method covers a laboratory pro-cedure for evaluating the moisture resistance of molded ex-panded perlite block thermal insulation when exposed to onespecific operating temperature.11.1.8.2 Significance and Use:(1) Molded perlite insulation products are formulated
35、 to beresistant to water absorption. It is important that the materialsretain a large proportion of their water resistance even afterexposure to elevated temperatures.(2) This test method is used to determine the water resistanceafter submersion of perlite insulation materials after exposureto soaki
36、ng heat.11.1.8.3 Test SpecimensSpecimens are to be 6 618 by312 618-in. (152 6 3by896 3-mm) by 2 618-in. (51 6 3-mm) thick perlite block. Two specimens are required. MarkTABLE 2 Physical RequirementsAPipe BlockDensity, lb/ft3(kg/m3) min 10 (160) 10 (160)max 14 (224) 14 (224)Flexural Strength, lb/in.2
37、(kPa)min . 45 (310)Stress corrosion Cracking of Austentic Stainless Steel pass . .Compressive Strength at 5% Deformation, lb/in.2(kPa) min 70 (483) 70 (483)Weight Loss by Tumbling, % loss in Weight after 10 minutes max 70 70Moisture content,B% by weight max 10 10Linear Shrinkage,% at 1200F (649C) fo
38、r 24 h max length 2 2width 2 2thickness 8 8Apparent Thermal ConductivityCBtu-in./h-ft2F (W/m/K), maxMeanTemperatureApp. ThermalConductivity byTest Method C335App. ThermalConductivity byTest Method C177 or C518100F (38C) 0.48 (0.069) 0.48 (0.069)200F (93C) 0.53 (0.076) 0.53 (0.076)300F (149C) 0.59 (0
39、.085) 0.59 (0.085)400F (204C) 0.64 (0.092) 0.64 (0.092)500F (260C) 0.69 (0.099) 0.69 (0.099)600F (316C) 0.75 (0.108) 0.75 (0.108)700F (371C) 0.80 (0.115) 0.80 (0.115)Water Absorption of Thermal Insulationafter heat aging and 48 h Water Immersion,moisture gain , % by weight600 F (316C) 50 50Surface B
40、urning CharacteristicsFlame spread, max 00Smoke Developed, max 55Non CombustibleNon Combustible Pass . .Hot-surface PerformanceWarpage, in. (mm), max14 (6)14 (6)Cracking No cracks completely through the insulation thickness. Surface cracks on hot face are acceptable.APhysical property requirements s
41、hown are for the materials in the as-manufactured condition. They may or may not represent the values of these properties undercertain in-service conditions, depending on the type of installation and the ultimate temperature exposure.BWater absorption values shown are for insulation in the as-manufa
42、ctured condition. Those portions of the insulation exposed to elevated temperatures may not retaintheir water absorption characteristics.CThe thermal transmission properties of perlite block and pipe insulation may vary with temperature, temperature gradient, thickness, and shape. Note that the appa
43、rentthermal conductivity requirements in the table are based on samples tested under the conditions specified in Test Methods C177 or C335. These are comparative valuesfor establishing specification compliance. They may not represent the installed performance of the insulation under use conditions d
44、iffering substantially from testconditions.Editorially corrected in March 2010.C610 0913each specimen for identification. The density of each specimenmust be within the allowable range as specified in Table 1.11.1.8.4 Apparatus:(1) Steel Rule, graduation in116 in.(2) Electric Oven, capable of mainta
45、ining temperatures ashigh as 600F (371C) with a 6 5 % accuracy.11.1.8.5 Procedure:(1) Place one specimen in the electric oven. The secondblock will be retained as a control specimen.(2) Operate the oven at 600F (149C) for a minimum of 24h. Place the control specimen and the heat treated specimens in
46、a controlled environment of 73.4 6 1.8F (23 6 1C) and 506 5 % relative humidity.NOTE 1Precaution: In addition to other precautions, wear appropri-ate hand protection to avoid injury when removing hot specimens from theoven.(3) After the specimens have cooled for at least 12 h in thecontrolled enviro
47、nment, weigh each of the specimens to thenearest 0.1 g.(4) Completely immerse each specimen so that a head of 1in. of distilled water at ambient temperature is maintained fora minimum of 48 h. Withdraw each specimen and quickly wipeoff excess surface moisture with a damp cloth. Immediatelyweigh each
48、 specimen to the nearest 0.1 g.11.1.8.6 CalculationCalculate the percent of water ab-sorption by weight, using the weights obtained after heatsoaking as the dry weight. The calculation should be asfollows:water absorption 5 100 3 WAI2 WAHS!/WAHS(1)where:WAI= after immersion specimen weight, andWAHS=
49、 after heat soak specimen weight.11.1.8.7 ReportThe report shall include the density of thespecimens and the water absorption after immersion.(1) Precision and BiasPrecision and bias have not yetbeen determined but are being investigated. A precision andbias statement will be included when the proper data have beenobtained and analyzed.11.1.9 Surface Burning Characteristics Test Method E84.11.1.10 Hot-Surface PerformanceTest Method C411 at1200F (649C).11.1.11 Stress Corrosion Cracking of
