1、Designation: C552 12Standard Specification forCellular Glass Thermal Insulation1This standard is issued under the fixed designation C552; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parent
2、heses 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.1. Scope1.1 This specification covers the composition, sizes, dimen-sions, and phy
3、sical properties of cellular glass thermal insula-tion intended for use on surfaces operating at temperaturesbetween 450 and 800F (268 and 427C). It is possible thatspecial fabrication or techniques for pipe insulation, or both,will be required for application in the temperature range from250 to 800
4、F (121 to 427C). Contact the manufacturer forrecommendations regarding fabrication and application proce-dures for use in this temperature range. For specific applica-tions, the actual temperature limits shall be agreed uponbetween the manufacturer and the purchaser.1.2 It is anticipated that single
5、-layer pipe insulation in halfsections or the inner layer of a multilayer system have thepotential to exhibit stress cracks above 250F (122C).1.3 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are prov
6、ided for information onlyand are not considered standard.1.4 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 the applica-bili
7、ty of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C165 Test Method for Measuring Compressive Propertiesof Thermal InsulationsC168 Terminology Relating to Thermal InsulationC177 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties
8、 by Means ofthe Guarded-Hot-Plate ApparatusC203 Test Methods for Breaking Load and Flexural Prop-erties of Block-Type Thermal InsulationC240 Test Methods of Testing Cellular Glass InsulationBlockC302 Test Method for Density and Dimensions of Pre-formed Pipe-Covering-Type Thermal InsulationC303 Test
9、Method for Dimensions and Density of Pre-formed Block and BoardType Thermal InsulationC335 Test Method for Steady-State Heat Transfer Proper-ties of Pipe InsulationC390 Practice for Sampling and Acceptance of ThermalInsulation LotsC411 Test Method for Hot-Surface Performance of High-Temperature Ther
10、mal InsulationC450 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 and Outer Diameters of ThermalInsulation for Nominal Siz
11、es of Pipe and TubingC692 Test Method for Evaluating the Influence of ThermalInsulations on External Stress Corrosion Cracking Ten-dency of Austenitic Stainless SteelC795 Specification for Thermal Insulation for Use in Con-tact with Austenitic Stainless SteelC871 Test Methods for Chemical Analysis o
12、f ThermalInsulation Materials for Leachable Chloride, Fluoride,Silicate, and Sodium IonsC1045 Practice for CalculatingThermalTransmission Prop-erties Under Steady-State ConditionsC1058 Practice for Selecting Temperatures for Evaluatingand Reporting Thermal Properties of Thermal InsulationC1114 Test
13、Method for Steady-State Thermal TransmissionProperties by Means of the Thin-Heater ApparatusC1617 Practice for Quantitative Accelerated LaboratoryEvaluation of Extraction Solutions Containing IonsLeached from Thermal Insulation on Aqueous Corrosionof MetalsC1639 Specification for Fabrication Of Cell
14、ular Glass PipeAnd Tubing InsulationD226 Specification forAsphalt-Saturated Organic Felt Usedin Roofing and Waterproofing1This specification is under the jurisdiction of ASTM Committee C16 onThermal Insulation and is the direct responsibility of Subcommittee C16.20 onHomogeneous Inorganic Thermal In
15、sulations.Current edition approved May 1, 2012. Published July 2012. Originally approvedin 1965 to replace C381 58 and C343 56. Last previous edition approved in 2007as C552 07. DOI: 10.1520/C0552-12.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Servic
16、e 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 C700, West Conshohocken, PA 19428-2959, United States.D312 Specification for Asphalt Used in Roofing
17、E84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE96/E96M Test Methods for Water Vapor Transmission ofMaterials2.2 ISO Document:ISO 3951 Sampling Procedure and Charts for Inspection byVariables for Percent Defective33. Terminology3.1 For definitions used in this specification,
18、 see Terminol-ogy C168.3.2 Definitions of Terms Specific to This Standard:3.2.1 boardfabricated sections of cellular glass adheredand together covered with a facing such as a laminated kraftpaper adhered to both faces.4. Classification44.1 Cellular glass insulation is furnished in the followingtypes
19、:4.1.1 Type IFlat block manufactured,4.1.2 Type IIPipe and tubing insulation fabricated fromType I,4.1.3 Type IIISpecial shapes fabricated from Type I,4.1.4 Type IVBoard fabricated from Type I,NOTE 1Types not listed here may not be commercially available.These would be considered special order items
20、.5. Ordering Information5.1 Purchase orders for cellular glass insulation furnished tothis specification shall include the following information:5.1.1 Type designation (see 4.1),5.1.2 Dimensions according to type (see Section 9), and5.1.3 Jacketing when required.5.2 Any special requirements, such as
21、, type, fabricationcombinations not listed in accordance with Section 4, nonstan-dard dimensions in accordance with Section 9, inspectionrequirements in accordance with Section 13, or certificationrequirements in accordance with Section 16 shall be agreedupon between the purchaser and the supplier a
22、nd stated in thepurchase contract.6. Materials and Manufacture6.1 The block material shall consist of a glass compositionthat has been foamed or cellulated under molten conditions,annealed, and set to form a rigid noncombustible material withhermetically sealed cells. The material shall be trimmed i
23、ntoblocks of standard dimensions that are rectangular or tapered.6.2 Special shapes and pipe covering shall be fabricatedfrom blocks in accordance with Practices C450, C585 andSpecification C1639.6.3 Board, tapered or flat, shall be fabricated from blocks.7. Physical Properties7.1 The cellular glass
24、 insulation shall conform to the physi-cal requirements in Table 1. Contact the manufacturer forspecific design recommendations for all material types.8. Qualification Requirements8.1 The following requirements are generally employed forthe purpose of initial material or product qualification for Ty
25、peI, Block Material:8.1.1 Compressive strength.8.1.2 Flexural strength.8.1.3 Water absorption.8.1.4 Water vapor permeability.8.1.5 Thermal conductivity.8.1.6 Hot-surface performance.8.1.7 Surface burning characteristics.8.2 The following requirements are generally employed forqualification of Type I
26、I, pipe and tubing insulation:8.2.1 Thermal Conductivity.8.2.2 Type II, pipe and tubing insulation shall be fabricatedfrom material having met the qualification requirements ofType I.8.3 Type III and Type IV material shall be fabricated frommaterial having met the qualification requirements of Type
27、I.9. Dimensions, Mass, and Permissible Variations9.1 Type I, Flat BlockBlocks shall be nominal rectangularsections. Block size is 18 in. (457 mm) in width, 24 in. (610mm) in length, and 1.5 to 6 in. (38 to 152 mm) in thickness.Tapered block has the same dimensions, is tapered on the24-in. (610-mm) s
28、ide, with tapers of18 ,14 ,or12 in./ft (3, 6,or 13 mm per 0.3 m). (Other block dimensions and thicknessmust be agreed upon between the purchaser and the supplier.)9.2 Type II, Pipe and Tubing InsulationSee SpecificationC1639.9.3 Type III, Special ShapesDimensions of special shapesshall be as agreed
29、upon between the supplier and the purchaser.9.4 Type IV, BoardDimensions of board shall be agreedupon between the purchaser and the supplier. Boards areavailable typically as 24 in. (610 mm) wide by 48 in. (1219mm) long by 1.5 in. (38 mm), or 3 in. (76 mm) thick.9.5 Dimensional Tolerances:9.5.1 For
30、Types I and IV, the average measured length,width, and thickness tolerances shall be in accordance withthose listed in Table 2.9.5.2 For Type II, the dimensional tolerances are given inTable 3.9.5.3 For Type III, dimensional tolerances shall be agreedupon between the purchaser and the supplier.9.5.4
31、 For Types I, II, and IV, special dimensional tolerancesshall be agreed upon between the purchaser and the supplier asstated in the purchase contract.10. Workmanship, Finish and Appearance10.1 Since some requirements for this material are noteasily specified by numerical value, the insulation shall
32、haveno visible defects that will adversely affect its service qualities.3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.4Type and grade designations are in accordance with Form and Style for ASTMStandards, Part B, 10th ed
33、., Section B8., January 1996.C552 12211. Sampling11.1 The insulation shall be sampled for the purpose oftesting in accordance with Practice C390. Any specific provi-sions for sampling shall be agreed upon between the purchaserand the supplier.12. Test Methods12.1 All cellular glass is produced initi
34、ally in block form.When special shapes are required, cellular glass is fabricatedinto pipe, curved or segmental insulation, precision V-grooved(material specifically cut to fit around the exterior surface ofpiping or equipment with no gaps), or board. All initialqualification testing shall be made o
35、n block specimens. Alltests shall be conducted on specimens with no surface mois-ture. The properties referenced in this specification shall bedetermined in accordance with the following test methods:12.2 Density:12.2.1 Type IBlock insulation: Test Method C303.12.2.2 Type IIPipe insulation: Test Met
36、hod C302.12.3 Thermal ConductivityMake determinations at fourmean temperatures in accordance with Practice C1058. Use theresults of these tests to calculate thermal transmission proper-ties in accordance with Practice C1045.NOTE 2At this time, tested values cannot be achieved for belowambient temper
37、atures for Type II pipe insulation due to the lack of a testapparatus measuring radial heat flow in accordance with Test MethodC335.12.3.1 Type I: Block InsulationUse either Test MethodC177, C518,orC1114 in conjunction with Practice C1045,using the following specimen preparation. Test Method C518sha
38、ll not be used at temperatures or thermal resistances otherthan those in the range of calibration. Test Method C1114 shallnot be used at temperatures or thermal resistance ranges otherthan those with comparable/verifiable results to Test MethodC177. In case of dispute, Test Method C177 is recognized
39、 asthe final authority. Specimen preparation is as follows:12.3.2 To achieve flatness and parallelism of the surface asrequired by the preceding test methods, the following methodis suggested: By sawing from the original block, prepare aTABLE 1 Physical RequirementsATYPE I BLOCKPropertiesDensity, lb
40、/ft3(kg/m3)Minimum 6.12 (98)Maximum 8.62 (138)Compressive strength, capped,Bmin, psi (kPa)(Capped material in accordance with TestMethods C240)60 (415)Compressive resistance, uncapped, min, psi (kPa)(Uncapped at 0.2-in. deformation)35 (242)Flexural strength, min, psi (kPa) 41 (283)Water absorption,
41、max, volume % 0.5Water vapor permeability, max, perin. or grainsin.of thickness/hft2in. Hg (ngPa1s1m1)0.005 (0.007)Hot-surface performance warpage, in. (mm), max 0.125 (3)Cracking see 12.8.1Behavior of materials in a vertical tube furnace passedSurface burning characteristicsCFlame spread index, max
42、 5Smoke developed index, max 0Mass Loss Corrosion Rate # DIApparent Thermal ConductivityD,E: flat block, max(Btu-in./hft2F) (W/mK) mean temperature, F(C)400 (204) 0.58 (0.084)300 (149) 0.48 (0.069)200 (93) 0.40 (0.058)100 (38) 0.33 (0.048)75 (24) 0.31 (0.045)50 (10) 0.30 (0.043)0 (18) 0.27 (0.039)50
43、 (46) 0.24 (0.035)100 (73) 0.22 (0.032)150 (101) 0.20 (0.029)TYPE II PIPE AND TUBINGApparent thermal conductivityD,F,G,HPipe insulation, max, (Btuin./hft2F) (W/mK) atmean temperature F (C)400 (205) 0.69 (0.099)300 (149) 0.56 (0.081)200 (93) 0.46 (0.066)100 (38) 0.37 (0.053)Hot-surface performance wa
44、rpage, in. (mm), max 0.125 (3)Cracking see 12.8.1APhysical property requirements shown are for the materials in the as-manufactured condition. They do not necessarily represent the values of theseproperties under certain in-service conditions, depending on the type of installationand the ultimate te
45、mperature exposure.BFor information on higher density and compressive strength material, contactthe manufacturers.CFor Types II and III, smoke developed index and flame spread index willremain constant with some fabrication techniques and will change with otherfabrication techniques. For application
46、s requiring a flame spread index of 25 anda smoke developed index of 50, contact fabricator or manufacturer.DThermal transmission properties of insulation will vary with temperature,temperature gradient, thickness, and shape. Note the apparent thermal conduc-tivity values in the table are based on s
47、amples tested under conditions specified in12.3 These are comparative values for establishing specification compliance. Theydo not necessarily represent the installed performance for the insulation under useconditions differing substantially from the test conditions.EEvaluated at a small temperature
48、 difference in accordance with PracticeC1058.FEvaluated at a large temperature difference in accordance with PracticeC1058.GSingle layer or inner layer on a multilayer system piping insulation fabricatedin half sections has the potential to exhibit stress cracks above 250F (122C). Thethermal perform
49、ance in this range is characterized with cracks present.HAt this time, pipe insulation cannot be tested below ambient temperatures. See12.3, Note 2.TABLE 2 Manufacturers Dimensional TolerancesDimensions, in. (mm) Block (Type I) and Board (Type IV)Length 6116 (1.6)Width 6116 (1.6)Thickness 6116 (1.6)TABLE 3 Fabrication TolerancesDimensions, in. (mm)Board(Type III, IV)Pipe (Type II)Length 618 (3.2) In accordance withPractice C1639Width 618 (3.2) In accordance withPractice C1639Thickness 618 (3.2) In accordance withPra
