ASTM C892-2018a Standard Specification for High-Temperature Fiber Blanket Thermal Insulation.pdf

1、Designation: C892 18C892 18aStandard Specification forHigh-Temperature Fiber Blanket Thermal Insulation1This standard is issued under the fixed designation C892; 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.1. Scope1.1 This specification covers high-temperature fiber blanket thermal insulation for use from ambient up to 3000F (1649C).1.2 When t

3、he potential exists that the installation or use of thermal insulation materials, accessories, and systems will posesafety or health problems, the manufacturers shall provide the user with appropriate current information regarding any knownproblems associated with the recommended use of the products

4、, and shall also recommend protective measures to be employedin their safe utilization. The user shall establish appropriate safety and health practices and determine the applicability of regulatoryrequirements prior to use.1.3 The values stated in inch-pound units are to be regarded as the standard

5、. The values given in parentheses are mathematicalconversions to SI units which are provided for information only and are not considered standard.1.4 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 sta

6、ndard to establish appropriate safety, health, and environmental practices and determine the applicability ofregulatory limitations prior to use.1.5 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Pri

7、nciples for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2C71 Terminology Relating to RefractoriesC167 Test Methods for Thickness and Density of Blank

8、et or Batt Thermal InsulationsC168 Terminology Relating to Thermal InsulationC177 Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of theGuarded-Hot-Plate ApparatusC201 Test Method for Thermal Conductivity of RefractoriesC209 Test Methods for Cellulosi

9、c Fiber Insulating BoardC356 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 Method for Hot-Surface Performance of High-Temperature Thermal InsulationC447 Practice

10、 for Estimating the Maximum Use Temperature of Thermal InsulationsC665 Specification for Mineral-Fiber Blanket Thermal Insulation for Light Frame Construction and Manufactured HousingC680 Practice for Estimate of the Heat Gain or Loss and the Surface Temperatures of Insulated Flat, Cylindrical, and

11、SphericalSystems by Use of Computer ProgramsC795 Specification for Thermal Insulation for Use in Contact with Austenitic Stainless SteelC1045 Practice for Calculating Thermal Transmission Properties Under Steady-State ConditionsC1058 Practice for Selecting Temperatures for Evaluating and Reporting T

12、hermal Properties of Thermal InsulationC1101/C1101M Test Methods for Classifying the Flexibility or Rigidity of Mineral Fiber Blanket and Board InsulationC1104/C1104M Test Method for Determining the Water Vapor Sorption of Unfaced Mineral Fiber Insulation1 This specification is under the jurisdictio

13、n ofASTM Committee C16 on Thermal Insulation and is the direct responsibility of Subcommittee C16.23 on Blanket and LooseFill Insulation.Current edition approved May 1, 2018Nov. 1, 2018. Published May 2018November 2018. Originally approved in 1978. Last previous edition approved in 20172018 asC892 1

14、7.C892 18. DOI: 10.1520/C0892-18.10.1520/C0892-18A.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 docum

15、ent 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 as a

16、ppropriate. 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 States1C1335 Test Method for Measuring Non-Fibrous Content of Man

17、-Made Rock and Slag Mineral Fiber Insulation3. Terminology3.1 DefinitionsTerminology C71 and Terminology C168 shall be considered as applying to the terms used in this standard.3.2 Definitions of Terms Specific to This Standard:3.2.1 fibersthe fibers shall be refractory oxides, processed from a molt

18、en state into fibrous form.3.2.2 high-temperature fiber thermal insulationa thermal insulation, varying in flexibility, composed of refractory inorganicfibers, without binder added, and furnished in either flat sheets or rolls.4. Classification4.1 The general-type product governed by this specificat

19、ion is blanket or batt composed of inorganic refractory fibers.4.2 TypesThe product is separated into types based upon temperatures of use (Table 1).4.3 GradesThe product is separated into grades based upon its maximum Apparent Thermal Conductivity values (see Table2) and minimum Tensile Strength va

20、lues (see Table 3).5. Ordering Information5.1 High-temperature fiber blanket thermal insulation is normally purchased on the basis of brand name, type, grade, length,width, thickness, and total square footage as specified in the purchase order.5.2 The type and grade for the intended service shall be

21、 as specified by the user with the assistance of the supplier wheredesirable.5.3 The purchaser shall be permitted to specify, inspect and sample the material.5.4 When a certification or test report, or both, is required, this shall be specified by the purchaser.6. Materials and Manufacture6.1 Compos

22、itionHigh temperature fiber thermal insulation shall be composed of fibers, made of metallic oxides of, but notlimited to, silicon, aluminum, calcium, and magnesium. The raw materials, processed from the molten state into spun fibers, arethen mechanically interlocked through a needling process into

23、insulation blanket felts with out the use of chemical binders.7. Physical and Mechanical, and Chemical Properties Requirements7.1 Apparent Thermal Conductivity shall conform to the requirements of Table 2 when tested in accordance with 11.1.2.7.2 Tensile Strengthshall conform to the requirements of

24、Table 3 when tested in accordance with 11.1.5.7.3 Flexibilityshall be classified as flexible when tested in accordance with 11.1.811.1.7.7.4 Maximum Use Temperatureshall conform to the requirements of 4.2 when tested in accordance with 11.1.4.7.5 Non-fibrous content (shot)shall be limited to a maxim

25、um of 30 % by weight when testing in accordance with 11.1.3.7.6 Linear Shrinkageshall be limited to a maximum of 5 %, after exposure to the Maximum Use Temperature, in accordancewith 11.1.4.8. Dimensions, Mass, and Permissible Variations8.1 Rolls or flat sheets of blanket are normally furnished in s

26、tandard dimensions as shown in Table 4, Table 5, and Table 6.8.2 The standard length, width, and thickness combinations available are a function of the type and grade. Contact the supplierfor information on standard or non-standard dimension and combinations.8.3 The maximum density (determined in ac

27、cordance with Test Method C167) specified in Table 4 for Grades 3, 4, 6, 8, 10,and 12 are for weight design purposes only.TABLE 1 Classification by TypeType Temperature of use, F (C), maximumI 1350 (732)II 1600 (871)IIA 2000 (1093)III 2300 (1260)IV 2600 (1427)V 3000 (1649)C892 18a29. Workmanship, Fi

28、nish, and Appearance9.1 The insulation shall indicate good workmanship in fabrication by a uniform appearance, shall not have visible defects suchas tears and holes that will adversely affect the service quality, and shall be free from foreign materials.TABLE 2 Apparent Thermal Conductivity, maximum

29、 Btu in./hft2F (W/mK) at Mean Temperature, F (C)Grade 75 (24) 200 (93) 400 (204) 800 (427) 1200 (649) 1600 (871) 2000 (1093)3 0.52 (0.075) 0.56 (0.081) 0.73 (.105) 1.32 (.190) 2.42 (.348) 4.05 (.583) 5.94 (.855)4 0.50 (0.072) 0.54 (0.078) 0.68 (.098) 1.13 (.163) 2.15 (.349) 3.53 (.508) 5.47 (.787)6

30、0.42 (0.060) 0.47 (0.068) 0.59 (.086) 1.03 (.149) 1.91 (.276) 3.06 (.440) 4.75 (.604)8 0.41 (0.059) 0.46 (0.066) 0.56 (.081) 1.01 (.146) 1.67 (.241) 2.60 (.374) 4.18 (.682)10 0.40 (0.058) 0.45 (0.065) 0.55 (.079) 0.98 (.141) 1.61 (.231) 2.31 (.333) 3.63 (.523)12 0.37 (0.053) 0.43 (0.062) 0.53 (0.076

31、) 0.96 (.138) 1.43 (.206) 2.11 (.304) 3.14 (.451)TABLE 3 Tensile Strength, MinimumGrade Tensile Strength,lb/in.2 (KPa)3 1.0 (6.9)4 1.5 (10.3)6 2.0 (13.8)8 3.0 (20.7)10 4.0 (27.6)12 5.0 (34.5)TABLE 4 Density, Maximum and MinimumGrade Minimum Density ,lbs/ft.3 (kg/m3)A Maximum Density ,lbs/ft.3 (kg/m3

32、)B3 2.5 (41) 4 (64)4 3.4 (54) 5.5 (88)6 5.1 (82) 8 (128)8 6.8 (109) 10.5 (168)10 8.5 (136) 13 (208)12 10.2 (163) 16 (256)A Minimum density limitations is for the purpose of maintaining structuralproperties.B Maximum density limitations are for the purpose of providing design informationfor stress an

33、alyses of pipe and equipment.TABLE 5 Thickness DimensionsThickness, in. (mm) Tolerance116 (1.6) + 132, 164 in. (+0.8, -0.4mm)18 (3.2) + 116, 132 in. (+1.6, -0.8mm)316 (4.8) + 332, 364 in. (+2.4, -1.2mm)14 (6.4) +14, 18 in. ( +6.4, 3.2 mm)38 (9.5) +38, 18 in. ( +9.5, 3.2 mm)12 (12.7) +12, 18 in. ( +1

34、2.7, 3.2 mm)34 (19.1) +34, 18 in. ( +19.1, 3.2 mm)1 (25.4) +34, 18 in. ( +19.1, 3.2 mm)112 (38.1) +34, 18 in. ( +19.1, 3.2 mm)2 (51.0) +34, 14 in. ( +19.6, 6.4 mm)TABLE 6 Width DimensionsWidth, in. (mm) Tolerance, %12 (305) 2, +1018 (457) 2, +1024 (610) 2, +1036 (914) 2, +1039 (991) 2, +1042 (1067)

35、2, +1048 (1219) 2, +1072 (1829) 2, +10C892 18a310. Sampling10.1 The insulation shall be sampled for the purposes of test in accordance with Practice C390. Specific provision for samplingshall be agreed upon between the supplier and the purchaser.11. Test Methods11.1 The properties enumerated in this

36、 specification shall be determined in accordance with the following test methods:11.1.1 Dimensional Measurement and DensityTest Methods C167. Density is based on nominal thickness.11.1.2 Apparent Thermal ConductivityTest in accordance with Test Method C177 or C201 (modified by the procedure shownin

37、Annex A1).11.1.2.1 Practice C1058. shall be used to obtain recommended test temperature combinations for testing purposes.11.1.2.2 As specified in Practice C1045, the range of test conditions must include at least one test where the hot surfacetemperature is greater than, or equal to, the hot limit

38、of the temperature range of desired data and at least one test where the coldsurface temperature is less than, or equal to, the cold limit of the temperature range desired. The exception to this requirement isgiven in 11.1.2.2(1) below.At least two additional tests shall be distributed somewhat even

39、ly over the rest of the temperature range.(1) In cases where the maximum temperature of the C177 test device is exceeded by the required hot surface temperature asstipulated in 11.1.2.2, it is acceptable to operate one hot plate at the C177 upper temperature limit and the other hot plate at thelower

40、 temperature that gives the target mean temperature.11.1.2.3 Final analysis of the thermal data shall be conducted in accordance with Practice C1045 to generate a thermalconductivity versus mean temperature relationship for the specimen. Practice C1045 and the specific hot and cold surfacetemperatur

41、es is required to determine the effective thermal conductivity for comparison to the specification requirements.11.1.2.4 Final step of Practice C1045 analysis would be to calculate the thermal conductivity using the equations generated ata set of mean temperatures for comparison to the specification

42、.(1) While it is recommended that the specification data be presented as conductivity versus temperature, it is possible thatseveral existing specifications will contain mean temperature data from tests conducted at specific hot and cold surfacetemperatures. In these cases, it is possible that the c

43、onductivity will be a as a function of temperature and that the Practice C1045analysis will provide different results. To ensure that the data is compatible, a Practice C680 analysis, using the conductivity versustemperature relationship from Practice C1045 and the specific hot and cold surface temp

44、eratures, is required to determine theeffective thermal conductivity for comparison to the specification requirements.11.1.3 Non-Fibrous Content (Shot)Test Method C1335 Procedure B, with the following exceptions.11.1.3.1 Use U.S. Standard Sieves No. 30, 50, and 70. The specimen shall first be fired

45、in a furnace at the maximum usetemperature for the particular Type for a duration of 5h. After passing all particles and fine fiber through Sieve No. 50,mechanically shake Sieve No. 70 for 30 min.11.1.3.2 For the purposes of this specification, the non-fibrous content (that is, shot) are those not p

46、assing through a U.S.Standard No. 70 sieve (210 m opening). The shot content is the cumulative weight of shot remaining on 30-, 50-, and 70-meshscreens.11.1.4 Linear Shrinkage and Temperature of UseTest Method C356, except that dimensions shall be determined by TestMethods C167. The temperature of t

47、est shall be the temperature of use, as specified in 4.2.11.1.5 Tensile StrengthTest Methods C209, Section 12 (parallel to surface), except that rate of separation of the jaws shall be1 to 2 in./min (25 to 50 mm/min).11.1.6 Corrosiveness to SteelTest in accordance with the corrosiveness method of Sp

48、ecification C665.11.1.7 Maximum Use Temperature and Exothermic Temperature RiseTest in accordance with Test Method C411and the hotservice performance of Practice C447 at the maximum use temperature.All types shall be tested at the insulations stated maximumthickness, in either single or multiple lay

49、er configurations.TABLE 7 Length DimensionsLength, in. (mm) ToleranceA36 (914) 048 (1219) 084 (2134) 096 (2438) 0144 (3658) 0150 (3810) 0180 (4572) 0288 (7315) 0300 (7620) 0312 (7925) 0600 (15240) 0A Not limitedexcess is permitted.C892 18a411.1.7 FlexibilityTest in accordance with Test Method C1101/C1101M (except use 1 in. (25.4 mm) thick material) forclassifying the flexibility of the material.11.1.8 Water Vapor SorptionTest in accordance with Test Method C1104/C1104M for determi