1、Designation: C 610 07Standard Specification forMolded Expanded Perlite Block and Pipe ThermalInsulation1This standard is issued under the fixed designation C 610; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last rev
2、ision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification covers molded expanded pe
3、rliteblock, 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 the standard. The values given in parentheses are forinformation only.1.3 When the installation or use of the
4、rmal insulationmaterials, accessories, and systems may pose safety or healthproblems, the manufacturer shall provide the user appropriatecurrent information regarding any known problems associatedwith the recommended use of the companys products and shallalso recommend protective measures to be empl
5、oyed in theirsafe utilization. The following safety caveat applies only to thetest methods portion of this specification: This standard doesnot purport to address all of the safety concerns, if any,associated with its use. It is the responsibility of the user of thisstandard to establish appropriate
6、 safety and health practicesand determine the applicability of regulatory limitations priorto use.2. Referenced Documents2.1 ASTM Standards:2C 165 Test Method for Measuring Compressive Propertiesof Thermal InsulationsC 168 Terminology Relating to Thermal InsulationC 177 Test Method for Steady-State
7、Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate ApparatusC 203 Test Methods for Breaking Load and Flexural Prop-erties of Block-Type Thermal InsulationC 302 Test Method for Density and Dimensions of Pre-formed Pipe-Covering-Type Thermal InsulationC 303 Te
8、st Method for Dimensions and Density of Pre-formed Block and BoardType Thermal InsulationC 335 Test Method for Steady-State Heat Transfer Proper-ties of Pipe InsulationC 356 Test Method for Linear Shrinkage of PreformedHigh-Temperature Thermal Insulation Subjected to Soak-ing HeatC 390 Practice for
9、Sampling and Acceptance of ThermalInsulation LotsC411 Test Method for Hot-Surface Performance of High-Temperature Thermal InsulationC 421 Test Method for Tumbling Friability of PreformedBlock-Type Thermal InsulationC 450 Practice for Fabrication of Thermal Insulating FittingCovers for NPS Piping, an
10、d Vessel LaggingC 518 Test Method for Steady-State Thermal TransmissionProperties by Means of the Heat Flow Meter ApparatusC 585 Practice for Inner and Outer Diameters of RigidThermal Insulation for Nominal Sizes of Pipe and Tubing(NPS System)C 692 Test Method for Evaluating the Influence of Thermal
11、Insulations on External Stress Corrosion Cracking Ten-dency of Austenitic Stainless SteelC 795 Specification for Thermal Insulation for Use in Con-tact with Austenitic Stainless SteelC 1045 Practice for Calculating Thermal TransmissionProperties Under Steady-State ConditionsC 1058 Practice for Selec
12、ting Temperatures for Evaluatingand Reporting Thermal Properties of Thermal InsulationE84 Test Method for Surface Burning Characteristics ofBuilding Materials3. Terminology3.1 GeneralTerminology C 168 shall be considered asapplying to the terms used in this specification.3.2 Definitions of Terms Spe
13、cific to This Standard:1This specification is under the jurisdiction of ASTM Committee C16 onThermal Insulation and is the direct responsibility of Subcommittee C16.20 onHomogeneous Inorganic Thermal Insulations.Current edition approved April 15, 2007. Published April 2007. Originallyapproved in 196
14、7. Last previous edition approved in 2005 as C 610 05.2For 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.1Copyri
15、ght ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.2.1 compositionmolded expanded perlite block, fitting,and pipe thermal insulation shall be composed principally ofexpanded perlite and silicate binders. It may also containreinforcing fibers
16、.4. Standard Shapes, Sizes, and Dimensions4.1 Molded expanded perlite block, fitting, and pipe thermalinsulation shall be as 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)
17、, and inthickness from 112 to 6 in. (38 to 152 mm) in increments of12in. (13 mm).4.1.2 Pipe InsulationMolded expanded perlite pipe insu-lation shall be supplied either as hollow cylindrical shapes splitin half lengthwise (in a plane including the cylindrical axis) oras curved segments. The pipe insu
18、lation shall be furnished insections or segments in lengths of either 36 or 39.37 in. (914 or1000 mm) to fit standard sizes of 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. Inn
19、er and outer diameters shallbe in accordance with those standard dimensions specified inPractice C 585. Since outside diameter tolerances may bedifferent under individual manufacturing processes, it may benecessary to have pipe insulation furnished in two or morelayers nested by the manufacturer. Th
20、e purchaser shall consultthe manufacturer for specific requirements.4.1.3 FittingsMolded (expanded insulation fittings shallconform to the inner and outer diameters in accordance withthose standard dimensions specified in Practice C 585. Miteredfittings shall be in accordance with Practice C 450.5.
21、Dimensional Tolerances5.1 GeneralThe average tolerances for length, width, andthickness shall comply with the requirements shown in Table 1.5.2 Pipe InsulationThe following additional tolerancesapply to perlite pipe insulation supplied as half sections:5.2.1 Fit and ClosureWhen fitted to the appropr
22、iate 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 of the pipe insulationshall be concentric with the outer cylindrical surface. Thedeviation from concentricity shall not exceed18 i
23、n. (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 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. (
24、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 havevisible defects that will adversely affect its service qualities.7. Physical Requirements7.1 The insulation shall conform to the physica
25、l require-ments in Table 2.8. Sampling8.1 The insulation shall be sampled in accordance withPractice C 390. Specific provision for sampling shall be agreedupon between the purchaser and the supplier.9. Qualification Requirements9.1 The following requirements are generally employed forpurpose of init
26、ial 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,9.1.5 Water absorption after heat aging,9.1.6 Apparent thermal conductivity,9.1.7 Hot-surface performance,9.1.8 Stress corrosion cr
27、acking of austenitic stainless steel,and9.1.9 Weight loss by tumbling.10. Acceptance Requirements10.1 The following requirements are generally employedfor purposes of acceptance sampling of lots or shipments ofqualified products:10.1.1 Density,10.1.2 Dimensional tolerances,10.1.3 Workmanship, and10.
28、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:11.1.1.1 Block InsulationTest Method C 303.11.1.1.2 Pipe InsulationTest Method C 302.11.1.2 Apparent Thermal Conductivity:11.1.2.1
29、 Block InsulationTest Method C 177 per PracticeC 1058 large temperature difference method or Test MethodC 518, using 112 612-in. (38 6 13-mm) thick specimens.11.1.2.2 Pipe InsulationTest Method C 335, using 112 612 in. (386 13-mm) thick specimens of pipe insulation assupplied for fit to 3-in. nomina
30、l iron pipe.11.1.2.3 GeneralDeterminations shall be made at fourmean temperatures within the temperature range in accordancewith Practice C 1058. The results of these tests shall be used tocalculate thermal transmission properties in accordance withPractice C 1045.11.1.3 Linear Shrinkage After Heat
31、SoakingRefer to TestMethod C 356. The test temperature shall be 1200F (649C).11.1.4 Flexural Strength: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 . in accordance with Practice C585Ou
32、ter Diameter . in accordance with Practice C585C61007211.1.4.1 Block InsulationTest Methods C 203, test 2-in.(50-mm) thick specimens.11.1.4.2 Pipe Insulation11.1.5 Compressive Strength (Block Insulation Only)TestMethod C 165. Test 2-in. (50-mm) thick specimens.11.1.6 Weight Loss by TumblingTest Meth
33、od C 421.11.1.7 Moisture ContentFour specimens, each 6 by 6 in.(150 by 150 mm) by 2 in. (50 mm) thick shall be tested. Eachof the four specimens shall then be placed in a controlledenvironment of 73 6 4F (23 6 2C) and a relative humidityof 50 6 5 % for a minimum of 24 h. The specimens shouldthen be
34、weighed to the nearest 0.1 g. These weights should berecorded as the as-received weights. The specimens shouldthen be placed in an air-circulating oven at a temperature of250 6 5F (121 6 3C) for a minimum of 2 h. Cool thespecimen to room temperature in a desiccator and reweigh.Repeat the process unt
35、il successive weighings agree to within0.2 % of the specimen weight obtained in the latest weighing.Record these weights as the moisture-free weight. The mois-ture content can then be calculated as follows:moisture content 5 100 3 WAR2 WMF!/WMF(1)where:WAR= as-received specimen weight, andWMF= moist
36、ure-free specimen weight.The value reported should be the numerical average of thecalculated moisture content of the four specimens rounded tothe nearest 1 %.11.1.8 Water Absorption After Heat Aging:11.1.8.1 ScopeThis test method covers a laboratory pro-cedure for evaluating the moisture resistance
37、of molded ex-panded perlite block thermal insulation when exposed to threespecific operating temperatures.11.1.8.2 Significance and Use:(1) Molded perlite insulation products are formulated to beresistant to water absorption. It is important that the materialsTABLE 2 Physical RequirementsAPipe Block
38、Density, lb/ft3(kg/m3) min 10 (160) 10 (160)max 14 (224) 14 (224)Flexural Strength, Lb/in. (kPa) min 45 (310) 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 aft
39、er 10 minutes max 70 70Moisture content,B% by weight max 10 10Linear Shrinkage,% at 1200F (649C) for 24 h max length 2 2width 2 2thickness 8 8Apparent Thermal ConductivityCBtu-in./h-ft2F (W/m/K), maxMeanTemperatureApp. ThermalConductivity byTest Method C 335App. ThermalConductivity byTest Method C 1
40、77 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 (0.085) 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 Insul
41、ationafter heat aging and 48 h Water Immersion,moisture gain , % by weight600 F (316C) 50 50Surface Burning CharacteristicsFlame spread, max 00Smoke Developed, max 55Hot-surface PerformanceWarpage, in. (mm), max14 (6)14 (6)Cracking No cracks completely through the insulation thickness. Surface crack
42、s on hot face are acceptable.APhysical property requirements shown 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.BWat
43、er absorption values shown are for insulation in the as-manufactured 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,
44、temperature gradient, thickness, and shape. Note that the apparentthermal conductivity requirements in the table are based on samples tested under the conditions specified in Test Methods C 177 or C 335. These are comparative valuesfor establishing specification compliance. They may not represent th
45、e installed performance of the insulation under use conditions differing substantially from testconditions.C610073retain 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
46、insulation materials after exposureto soaking 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. Four specimens are required. Markeach specimen for identification. The density of each specimencan be no greater than 14
47、.0 lb/ft3(224 kg/m3).11.1.8.4 Apparatus:(1) Steel Rule, graduation in116 in.(2) Electric Oven, capable of maintaining temperatures ashigh as 700F (371C) with a 610 % to 5 % accuracy.11.1.8.5 Procedure:(1) Place three specimens in the electric oven. The fourthblock will be retained as a control speci
48、men.(2) Operate the oven at 300F (149C) for a minimum of 24h. Remove one of the specimens and allow it to cool in acontrolled environment of 73.4 6 1.8F (23 6 1C) and 50 65 % relative humidity before testing.(3) Operate the oven at 500F (260C) for a minimum of 24h. Remove one of the specimens and al
49、low it to cool in acontrolled environment of 73.4 6 1.8F (23 6 1C) and 50 65 % relative humidity before testing.(4) Operate the oven at 700F (371C) for a minimum of 24h. Remove one of the specimens and allow it to cool in acontrolled environment of 73.4 6 1.8F (23 6 1C) and 50 65 % relative humidity before testing.NOTE 1Precaution: In addition to other precautions, wear appropri-ate hand protection to avoid injury when removing hot specimens from theoven.(5)After all of the specimens have cool
