1、Designation: C610 11C610 15Standard 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 las
2、t 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.1. Scope1.1 This specification covers molded ex
3、panded perlite block, fittings, and pipe thermal insulation intended for use on surfaceswith temperatures between 80 to 1200F (27 to 649C).1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provid
4、ed for information only and are not considered standard.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 and determine the applicability
5、 of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C165 Test Method for Measuring Compressive Properties of Thermal InsulationsC168 Terminology Relating to Thermal InsulationC177 Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by
6、 Means of theGuarded-Hot-Plate ApparatusC203 Test Methods for Breaking Load and Flexural Properties of Block-Type Thermal InsulationC302 Test Method for Density and Dimensions of Preformed Pipe-Covering-Type Thermal InsulationC303 Test Method for Dimensions and Density of Preformed Block and BoardTy
7、pe Thermal InsulationC335C335/C335M Test Method for Steady-State Heat Transfer Properties of Pipe InsulationC356 Test Method for Linear Shrinkage of Preformed High-Temperature Thermal Insulation Subjected to Soaking HeatC390 Practice for Sampling and Acceptance of Thermal Insulation LotsC411 Test Me
8、thod for Hot-Surface Performance of High-Temperature Thermal InsulationC421 Test Method for Tumbling Friability of Preformed Block-Type and Preformed Pipe-Covering-Type Thermal InsulationC450 Practice for Fabrication of Thermal Insulating Fitting Covers for NPS Piping, and Vessel LaggingC518 Test Me
9、thod for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter ApparatusC585 Practice for Inner and Outer Diameters of Thermal Insulation for Nominal Sizes of Pipe and TubingC795 Specification for Thermal Insulation for Use in Contact with Austenitic Stainless SteelC1045 Pract
10、ice for Calculating Thermal Transmission Properties Under Steady-State ConditionsC1058C1058/C1058M Practice for Selecting Temperatures for Evaluating and Reporting Thermal Properties of ThermalInsulationC1616 Test Method for Determining the Moisture Content of Organic and Inorganic Insulation Materi
11、als by WeightC1763 Test Method for Water Absorption by Immersion of Thermal Insulation MaterialsE84 Test Method for Surface Burning Characteristics of Building MaterialsE136 Test Method for Behavior of Materials in a Vertical Tube Furnace at 750C1 This specification is under the jurisdiction of ASTM
12、 Committee C16 on Thermal Insulation and is the direct responsibility of Subcommittee C16.20 on HomogeneousInorganic Thermal Insulations.Current edition approved Sept. 1, 2011May 1, 2015. Published December 2011August 2015. Originally approved in 1967. Last previous edition approved in 20102011as C6
13、10 10.C610 11. DOI: 10.1520/C0610-11.10.1520/C0610-15.2 For referencedASTM standards, visit theASTM 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 do
14、cument is not an ASTM standard and is intended only to provide the user of an ASTM standard an 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 a
15、s appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13. Standard Shapes, Sizes, and Dimensions3.1 Molded exp
16、anded perlite block, fitting, and pipe thermal insulation shall be as follows:3.1.1 BlockBlock shall be furnished in lengths of either 36 or 39.4 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 in thickness from 112 to 6 in. (38 to 152 mm) in
17、increments of 12 in. (13mm).3.1.2 Pipe InsulationMolded expanded perlite pipe insulation shall be supplied either as hollow cylindrical shapes split in halflengthwise (in a plane including the cylindrical axis) or curved segments. The pipe insulation shall be furnished in sections orsegments in leng
18、ths of either 36 or 39.4 in. (914 or 1000 mm) to fit standard sizes of pipe and tubing, and in nominal thicknessfrom 1 to 4 in. (25 to 102 mm) in 12-in. (13-mm) increments. Inner and outer diameters of multilayer construction shall bespecified. Inner and outer diameters shall be in accordance with t
19、hose standard dimensions specified in Practice C585. Sinceoutside diameter tolerances differ between individual manufacturing processes, it is acceptable to have pipe insulation furnishedin two or more layers nested by the manufacturer. The purchaser shall consult the manufacturer for specific requi
20、rements.3.1.3 FittingsMolded (expanded insulation fittings shall conform to the inner and outer diameters in accordance with PracticeC585. Mitered fittings shall be in accordance with Practice C450.4. Description4.1 Compositionmolded expanded perlite block, fitting, and pipe thermal insulation shall
21、 be composed principally ofexpanded perlite and silicate binders may contain reinforcing fibers.5. Dimensional Tolerances5.1 GeneralThe average tolerances for length, width, and thickness shall comply with the requirements shown in Table 1.5.2 Pipe InsulationThe following additional tolerances apply
22、 to perlite pipe insulation supplied as half sections:5.2.1 Fit and ClosureWhen fitted to the appropriate size pipe, the longitudinal seam of the pipe insulation shall close to within116 in. (1.6 mm) along the entire length of the section.5.2.2 ConcentricityThe inner bore of the pipe insulation shal
23、l be concentric with the outer cylindrical surface. The deviationfrom concentricity shall not exceed 18 in. (3.2 mm) or 5 % of the wall thickness, whichever is greater.5.2.3 Half-Section BalanceThe plane formed by the split between half sections shall include the cylindrical axis. Deviationof the sp
24、lit plane from the cylinder axis over the 36 or 39.4-in. (914 or 1000-mm) length shall not exceed 18 in. (3.2 mm).6. Workmanship, Finish, and Appearance6.1 Since some requirements for this material are not easily defined by a numerical value, the insulation shall not have visibledefects that will ad
25、versely affect its service qualities.7. Physical Requirements7.1 The insulation shall conform to the physical requirements in Table 2.8. Sampling8.1 The insulation shall be sampled in accordance with Practice C390. Specific provision for sampling shall be agreed uponbetween the purchaser and the sup
26、plier.9. Qualification Requirements9.1 The following requirements are generally employed for purpose of initial material or product qualification:9.1.1 Flexural strength,9.1.2 Compressive resistance,9.1.3 Surface burning characteristics,9.1.4 Linear shrinkage after soaking heat,9.1.5 Water absorptio
27、n after heat aging,9.1.6 Apparent thermal conductivity,9.1.7 Hot-surface performance,TABLE 1 Dimensional TolerancesBlock PipeLength 18 in. (3.2 mm) 18 in. (3.2 mm)Width 18 in. (3.2 mm) .Thickness 18 in. (3.2 mm) 18 in. (3.2 mm)Inner Diameter . in accordance with Practice C585Outer Diameter . in acco
28、rdance with Practice C585C610 1529.1.8 Stress corrosion cracking of austenitic stainless steel, and9.1.9 Weight loss by tumbling.10. Acceptance Requirements10.1 The following requirements are generally employed for purposes of acceptance sampling of lots or shipments of qualifiedproducts:10.1.1 Dens
29、ity,10.1.2 Dimensions,10.1.3 Workmanship, and10.1.4 Moisture content.11. Test Methods11.1 The properties enumerated in this specification shall be determined in accordance with the following test methods:11.1.1 Density:11.1.1.1 Block InsulationTest Method C303.TABLE 2 Physical RequirementsABlock and
30、 PipeDensity, lb/ft3(kg/m3)max 15 (240)Flexural Strength, lb/in.2 (kPa) min 45 (310) Block onlyStress corrosion Cracking of Austentic StainlessSteelpass passCompressive Resistance at 5% Deformationor Yield whichever occurs first, lb/in.2 (kPa)min 70 (483) Block onlyWeight Loss by Tumbling, % loss in
31、 Weight after 10minutesmax 70Moisture content,B % by weight max 10Linear Shrinkage,% at 1200F (649C) for 24 h max length 2width 2thickness 8Apparent Thermal ConductivityCBtu-in./h-ft2F (W/m/K), maxMeanTemperatureApp. ThermalConductivity byTest Method C177,C335, or C518Apparent Thermal ConductivityCB
32、tu-in./h-ft2F (W/m/K), maxMeanTemperatureApp. ThermalConductivity byTest Method C177,C335/C335M, or C518100F (38C) 0.48 (0.069)200F (93C) 0.53 (0.076)300F (149C) 0.59 (0.085)400F (204C) 0.64 (0.092)500F (260C) 0.69 (0.099)600F (316C) 0.75 (0.108)700F (371C) 0.80 (0.115)Water Absorption of Thermal In
33、sulationafter heat aging at 600F and 48 h WaterImmersion,weight gain %max 50Surface Burning CharacteristicsFlame spread max 0Smoke Developed max 5Non CombustibleNon Combustible Pass PassHot-surface PerformanceWarpage, in. (mm) max 14 (6) Block onlyCracking No cracks completely through the insulation
34、 thickness. Surface cracks on hot face are acceptable.A Physical property requirements shown are for the materials in the as-manufactured condition.They may or may not represent the values of these properties under certainin-service conditions, depending on the type of installation and the ultimate
35、temperature exposure.B Water 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.C The thermal transmission properties of perlite block and pipe insulation
36、may vary with temperature, 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 C177, C335C335/C335M, or C518. These arecomparative values for establishing specifica
37、tion compliance.They may not represent the installed performance of the insulation under use conditions differing substantiallyfrom test conditions.C610 15311.1.1.2 Pipe InsulationTest Method C302, Procedure A.11.1.2 Apparent Thermal Conductivity:11.1.2.1 Block InsulationTest Method C177 per Practic
38、e C1058C1058/C1058M large temperature difference method or TestMethod C518, using 112 6 12-in. (38 6 13-mm) thick specimens.11.1.2.2 Pipe InsulationTest Method C335C335/C335M, using 112 6 12 in. (386 13-mm) thick specimens of pipe insulationas supplied for fit to a 3-in. (89 mm) nominal iron pipe.11
39、.1.2.3 Apparent thermal conductivity versus mean temperature shall be calculated in accordance with Practice C1045.Determinations shall be made at four or more mean temperatures. Two of the test mean temperatures shall be within 50F (28C)of the highest and lowest mean temperature specified in Table
40、2. The other two determinations shall be made at mean temperaturesspaced equally within the specified range. All test temperatures shall be selected in accordance with Practice C1058C1058/C1058M and reported in the test results. The results of these tests shall be interpolated through reasonable cur
41、ve fitting ornumerical techniques, to establish the apparent thermal conductivity at the specified mean temperature.11.1.3 Linear Shrinkage After Heat SoakingRefer to Test Method C356. The test temperature shall be 1200F (649C).11.1.4 Flexural Strength (Block Insulation Only)Test Methods C203 Method
42、 1 (3 Point), Procedure D, test 2in. (50mm) thickspecimens. The flexural strength of pipe insulation cannot be tested.11.1.5 Compressive Resistance (Block Insulation Only)Test Method C165, Procedure A. Test nominal 112 6 12-in. (38 613mm) thick specimens.11.1.6 Weight Loss by TumblingTest Method C42
43、1.11.1.7 Moisture ContentTest Method C1616. The value reported should be the numerical average of the calculated moisturecontent of four specimens rounded to the nearest 1 %.11.1.8 Water Absorption After Heat Aging: Test Method C1763, Procedure A.11.1.8.1 ScopeThis test method covers a laboratory pr
44、ocedure for evaluating the moisture resistance of molded expandedperlite block thermal insulation when exposed to one specific operating temperature.Test two specimens, one as a control and theother is the heat aged block.11.1.8.2 Significance and Use: (1) Molded perlite insulation products are form
45、ulated to be resistant to water absorption. It isimportant that the materials retain a large proportion of their water resistance even after exposure to elevated temperatures. (Dryboth specimens to constant weight at 100C.(2) This test method is used to determine the water resistance after submersio
46、n of perlite insulation materials after exposure tosoaking heat.11.1.8.3 Test SpecimensSpecimens are to be 6 6 18 by 312 6 18-in. (152 6 3 by 89 6 3-mm) by 2 6 18-in. (51 6 3- mm)thick perlite block. Two specimens are required. Mark each specimen for identification. The density of each specimen must
47、 bewithin the allowable range as specified in Table 1.11.1.8.4 Apparatus: (1) Steel Rule, graduation in 116 in.(2) Electric Oven, capable of maintaining temperatures as high as 600F (316C) with a 6 5 % accuracy.11.1.8.3 Procedure: (1) Place one specimen in the electric oven. The second block will be
48、 retained as a control specimen.(Condition2) Operate the oven at 600F (316C) 6 10F (6C) for a minimum of 24 h. Place the control specimen and the heattreated specimens the control specimen in a controlled environment of 73 6 2F (23 6 1C) and 50 6 5 % relative humidity.7365F (2361C) and 5065% relativ
49、e humidity for a minimum of 48 h.NOTE 1Precaution: In addition to other precautions, wear appropriate hand protection to avoid injury when removing hot specimens from the oven.(3) After the specimens have cooled for at least 12 h in the controlled environment, weigh each of the specimens to the nearest0.1 g.(4) Completely immerse each specimen so that a head of 1 in. of distilled water at ambient temperature is maintained for aminimum of 48 h. Withdraw each specimen and quickly wipe
