1、Designation: C552 12aStandard 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 paren
2、theses 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,dimensions, and phys
3、ical properties of cellular glass thermalinsulation intended for use on surfaces operating at tempera-tures between 450 and 800F (268 and 427C). It is possiblethat special fabrication or techniques for pipe insulation, orboth, will be required for application in the temperature rangefrom 250 to 800F
4、 (121 to 427C). Contact the manufacturerfor recommendations regarding fabrication and applicationprocedures for use in this temperature range. For specificapplications, the actual temperature limits shall be agreed uponbetween the manufacturer and the purchaser.1.2 It is anticipated that single-laye
5、r 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 provided
6、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-bility of
7、 regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C165 Test Method for Measuring Compressive Properties ofThermal InsulationsC168 Terminology Relating to Thermal InsulationC177 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by M
8、eans ofthe Guarded-Hot-Plate ApparatusC203 Test Methods for Breaking Load and Flexural Proper-ties 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 Metho
9、d for Dimensions and Density of Pre-formed Block and BoardType Thermal InsulationC335 Test Method for Steady-State Heat Transfer Propertiesof Pipe InsulationC390 Practice for Sampling and Acceptance of ThermalInsulation LotsC411 Test Method for Hot-Surface Performance of High-Temperature Thermal Ins
10、ulationC450 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 Sizes of P
11、ipe 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 of Therm
12、al Insu-lation Materials for Leachable Chloride, Fluoride, Silicate,and Sodium IonsC1045 Practice for Calculating Thermal Transmission Prop-erties Under Steady-State ConditionsC1058 Practice for Selecting Temperatures for Evaluatingand Reporting Thermal Properties of Thermal InsulationC1114 Test Met
13、hod 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 Cellula
14、r Glass PipeAnd Tubing InsulationD226 Specification for Asphalt-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 Insu
15、lations.Current edition approved Sept. 15, 2012. Published October 2012. Originallyapproved in 1965 to replace C381 58 and C343 56. Last previous editionapproved in 2012 as C552 12. DOI: 10.1520/C0552-12A.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer S
16、ervice at 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 States1D312 Specification for Asphalt Used in Roo
17、fingE84 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 specificat
18、ion, 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 followingt
19、ypes: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 i
20、tems.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, suc
21、h as, 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 suppli
22、er and 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 trimm
23、ed intoblocks 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 g
24、lass 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 fo
25、r TypeI, 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 Ty
26、pe II, 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 T
27、ype 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-m
28、m) side, with tapers of18,14,or12 in./ft (3, 6, or13 mm per 0.3 m). (Other block dimensions and thickness mustbe 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 agree
29、d 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 Fo
30、r 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
31、.4 For Types I, II, and IV, special dimensional tolerancesshall be agreed upon between the purchaser and the supplier asstated in the purchase contract.3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.4Type and grade desig
32、nations are in accordance with Form and Style for ASTMStandards, Part B, 10th ed., Section B8., January 1996.C552 12a210. Workmanship, Finish, and Appearance10.1 Since some requirements for this material are noteasily specified by numerical value, the insulation shall haveno visible defects that wil
33、l adversely affect its service qualities.11. 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 i
34、nitially 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 ma
35、de on 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
36、 Method 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 te
37、mperatures 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 C51
38、8shall 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 otherTABLE 1 Physical RequirementsATYPE I BLOCKPropertiesDensity, lb/ft3(kg/m3)Minimum 6.12 (98)Maximum 8.62 (138)Com
39、pressive 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, max, volume % 0.5Water vapor permeability, max, p
40、erin. 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 5Smoke developed index, max 0Mass Loss Corrosion
41、 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 (0.070)200 (93) 0.40(0.058)100(38) 0.33 (0.047)75 (24) 0.31 (0.045)50 (10) 0.29 (0.043)0 (18) 0.27(0.038)50 (46) 0.24 (0.034)100 (73) 0.21 (0.031)150 (101) 0.1
42、9(0.027)200 (129) 0.17 (0.025)250 (157) 0.15 (0.022)300 (184) 0.14 (0.020)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 p
43、erformance warpage, 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 th
44、e ultimate temperature exposure.BFor information on higher density and compressive strength material, contact themanufacturers.CFor Types II and III, smoke developed index and flame spread index will remainconstant with some fabrication techniques and will change with other fabricationtechniques. Fo
45、r applications requiring a flame spread index of 25 and a smokedeveloped index of 50, contact fabricator or manufacturer.DThermal transmission properties of insulation will vary with temperature, tem-perature gradient, thickness, and shape. Note the apparent thermal conductivityvalues in the table a
46、re based on samples tested under conditions specified in 12.3These are comparative values for establishing specification compliance. They donot necessarily represent the installed performance for the insulation under useconditions differing substantially from the test conditions.EEvaluated at a smal
47、l temperature difference in accordance with Practice C1058.FEvaluated at a large temperature difference in accordance with Practice C1058.GSingle layer or inner layer on a multilayer system piping insulation fabricated inhalf sections has the potential to exhibit stress cracks above 250F (122C). The
48、thermal performance 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 116 (1.6)Width 116 (1.6)Thickne
49、ss 116 (1.6)TABLE 3 Fabrication TolerancesDimensions, in. (mm)Board(Type III, IV)Pipe (Type II)Length 18 (3.2) In accordance withPractice C1639Width 18 (3.2) In accordance withPractice C1639Thickness 18 (3.2) In accordance withPractice C1639Inner diameter . . . In accordance withPractice C1639Outer diameter . . . In accordance withPractice C1639C552 12a3than those with comparable/verifiable results to Test MethodC177. In case of dispute, Test Method C177 is recognized asthe final authority. Specimen pr
