1、Designation: C 533 07Standard Specification forCalcium Silicate Block and Pipe Thermal Insulation1This standard is issued under the fixed designation C 533; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、 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 calcium silicate block a
3、nd pipethermal insulation for use on surfaces with temperaturesbetween 80 and 1700F (27 to 927C), unless otherwise agreedupon between the manufacturer and the purchaser.1.2 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation onl
4、y.1.3 The following safety hazards caveat pertains only to thetest method (Section 12) described in this specification: Thisstandard does not purport to address all of the safety concerns,if any, associated with its use. It is the responsibility of the userof this standard to establish appropriate s
5、afety and healthpractices and determine the applicability of regulatory limita-tions prior to 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
6、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
7、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
8、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 446 Test Method for Breaking Load and CalculatedModulus of Rupture of Preformed Ins
9、ulation for Pipes3C 450 Practice for Fabrication of Thermal Insulating FittingCovers for NPS Piping, and 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 fo
10、r Nominal Sizes of Pipe and Tubing(NPS System)C 795 Specification for Thermal Insulation for Use in Con-tact with Austenitic Stainless SteelC 870 Practice for Conditioning of Thermal Insulating Ma-terialsC 1045 Practice for Calculating Thermal TransmissionProperties Under Steady-State ConditionsC 10
11、58 Practice for Selecting Temperatures for Evaluatingand Reporting Thermal Properties of Thermal InsulationC 1114 Test Method for Steady-State Thermal TransmissionProperties by Means of the Thin-Heater ApparatusC 1616 Test Method for Determining the Moisture Contentof Inorganic Insulation Materials
12、by WeightE84 Test Method for Surface Burning Characteristics ofBuilding Materials3. Terminology3.1 DefinitionsFor definitions used in this specification,see Terminology C 168.4. Classification4.1 Thermal insulation shall be of the following types:4.1.1 Type IBlock for use on surfaces at temperature
13、from140F (60C) to to 1200F (649C).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 March 1, 2007. Published March 2007. Originallyappro
14、ved in 1964 to replace C 344 and C 345. Last previous edition approved in2004 as C 533 04.2For 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 Sum
15、mary page onthe ASTM website.3Withdrawn.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.1.2 Type IPipe for use on surfaces at temperature from140F (60C) to to 1200F (649C).4.1.3 Type IABlock for use on surfaces at temperaturesfrom
16、140F (60C) to to 1200F (649C).4.1.4 Type IIBlock for use on surfaces at temperaturesfrom 140F (60C) to 1700F (927C).5. Description5.1 CompositionCalcium silicate thermal insulation shallconsist principally of hydrous calcium silicate usually with theincorporation of fibrous reinforcement. Asbestos s
17、hall not beused as a component in the manufacture of the material.6. Physical Requirements6.1 The insulation shall conform to the physical require-ments of Table 1.7. Standard Shapes, Sizes, and Dimensions7.1 Calcium silicate block-type thermal insulation shall besupplied in the form of pipe insulat
18、ion, flat block or curvedblocks as specified. Standard sizes of the block type insulationshall be as follows:7.1.1 Flat BlockFlat block shall be furnished in lengths of36 in. (458 or 914 mm), widths of 6 to 36 in. (152 to 914 mm),and thicknesses from 1 to 6 in. (25 to 152 mm) in12-in.(13-mm) increme
19、nts. Thicknesses greater than 3 in. (76 mm)shall be furnished in one or more layers as agreed upon bypurchaser and manufacturer.7.1.2 Curved BlockCurved block shall be furnished inlengths of 36 in. (914 mm), widths of approximately 6 to 12 in.(152 or 305 mm), thicknesses of 112 to 4 in. (38 to 101 m
20、m) in12-in. (13-mm) increments, and curved to inside radii of over1612 in. (419 mm). Individual dimensions shall conform tothose specified by the manufacturer.7.1.3 Grooved BlockGrooved block shall be furnished inlengths of 36 in. (914 mm), widths of 12 or 18 in. (305 or 458mm), and thicknesses from
21、 1 to 6 in. (25 to 152 mm) in12-in.(13-mm) increments. Size and spacing of grooves shall be asspecified by the manufacturer.7.2 Calcium Silicate Pipe InsulationCalcium silicate pipeinsulation shall be supplied either as hollow cylindrical shapessplit in half lengthwise (in a plane including the cyli
22、ndricalaxis) or as curved segments. The pipe insulation shall befurnished in sections or segments in a length of 36 in. (914mm) , unless otherwise agreed upon by the Purchaser, to fitstandard sizes of pipe and tubing, and in nominal wallthicknesses from 1 to 6 in. (25 to 152 mm), in12 in. (13 mm)inc
23、rements. Thicknesses greater than 3 in. (76 mm) shall befurnished in one or more layers as agreed upon by between thepurchaser and the manufacturer. Inner and outer diametersTABLE 1 Physical RequirementsNOTE 1The physical requirements are based on the properties of samples dried or conditioned, or b
24、oth, as specified in the referenced test methods.Calcium silicate insulation tends to absorb moisture to varying degrees depending on exposure conditions. It can absorb up to 4 times its dry weight ifplaced in direct contact with water through improper storage or application.NOTE 2The user is advise
25、d that some applications could require the knowledge of the thermal conductivity of the insulation material at meantemperatures above those shown. Consult the manufacturer for data at mean temperatures exceeding those listed.Type I Type I Type IA Type IIBlock Pipe Block BlockUse temperature, max, F
26、(C) 1200 (649) 1200 (649) 1200 (649) 1700 (927)Density (dry), max, lb/ft3(kg/m3) 15 (240) 15 (240) 22 (352) 22 (352)Flexural strength, min, psi (kPa) 50 (344) 50 (344) 50 (344) 50 (344)Compressive strength, min, at 5 % deformation, psi (kPa) 100 (688) 100 (688) 100 (688)Mass loss by tumbling, max, %
27、after first 10 minutes 20 20 20 20after second 10 minutes 40 40 40 40Soaking heat linear shrinkage, max,% 2 2 2 2Hot surface performance:warpage, max, in. (mm)14 (6)14 (6)14 (6)14 (6)cracking No cracks completely through the insulation thickness. Surface cracks on hot face are acceptableApparent the
28、rmal conductivityA(see Note 2)Btu-in./h-ft2-F (W/m-K)max at meantemperature of:100F (38C) 0.41 (0.059) 0.41 (0.059) 0.50 (0.072) 0.50 (0.072)200F (93C) 0.45 (0.065) 0.45 (0.065) 0.54 (0.078) 0.54 (0.078)300F (149C) 0.50 (0.072) 0.50 (0.072) 0.58 (0.084) 0.58 (0.084)400F (204C) 0.55 (0.079) 0.55 (0.0
29、79) 0.61 (0.088) 0.61 (0.088)500F (260C) 0.60 (0.087) 0.60 (0.087) 0.64 (0.092) 0.64 (0.092)600F (316C) 0.66 (0.095) 0.66 (0.095) 0.67 (0.097) 0.67 (0.097)700F (371C) 0.71 (0.102) 0.71 (0.102) 0.70 (0.101) 0.70 (0.101)800F (427C) . 0.73 (0.105)900F (482C) . 0.75 (0.108)1000F (538C) . 0.77 (0.111)Sur
30、face burning characteristics:Flame spread index, max 0 0 0 0Smoke density index, max 0 0 0 0Moisture content, by weight, max % 20 20 20 20AThe thermal transmission properties of calcium silicate block and pipe insulation vary with temperature, temperature gradient, moisture content, thickness, and s
31、hape.Note that the apparent thermal conductivity requirements in the table are based on samples tested under the conditions specified in 12.1.2. These are comparative valuesfor establishing specification compliance. They do not represent the installed performance of the insulation under use conditio
32、ns differing substantially from the testconditions.C533072shall be in accordance with those standard dimensions speci-fied in Practice C 585.NOTE 1When multilayer sectional pipe insulation is required, it isnecessary to consider the inside and outside diameters of each layer toensure proper nesting
33、of materials when installed. Necessity of furnishingmultilayer pipe insulation nested from the manufacturer shall be based onmanufacturers ability to control outside diameters on inner layers to notgreater than inside diameters, at minus tolerances, of nesting outer layerunder normal production, as
34、agreed to between purchaser and manufac-turer.8. Dimensional Tolerances8.1 GeneralThe average tolerances for length, width, andthickness shall be as following:Block PipeLength 618 in. (3 mm) 618 in. (3 mm)Width 618 in. (3 mm)Thickness 618 in. (3 mm)Inner Diameter in accordance with Practice C 585Out
35、er Diameter in accordance with Practice C 5858.2 Pipe InsulationThe following additional dimensionaltolerances apply only to calcium silicate pipe insulation sup-plied as half sections.8.2.1 Fit and ClosureWhen fitted to the appropriate sizepipe by banding on 9-in. (229-mm) centers, the longitudinal
36、seams on both sides of the pipe insulation shall close to within116 in. (2 mm) along the entire length of the section.8.2.2 ConcentricityThe inner bore of the pipe insulationshall be concentric with the outer cylindrical surface. Thedeviation from concentricity shall not exceed18 in. (3 mm) or5 % of
37、 the wall thickness, whichever is greater.8.2.3 Half-Section BalanceThe plane formed by the slitbetween half sections shall include the cylindrical axis. Devia-tion of the slit plane from the cylindrical axis over a 36-in.(914-mm) length shall not exceed18 in. (3 mm).8.3 Grooved BlockThe following a
38、dditional requirementsapply only to calcium silicate block insulation containinggrooves and intended for installation over curved surfaces, 20in. (508 mm) in diameter of larger.8.3.1 Fit and ClosureWhen fitted to the curved surface,the grooves shall close to18 in. (3 mm) or less through thedepth of
39、the groove. The exposed surface crack shall not openmore than18 in. (3 mm).9. Workmanship9.1 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.10. Sampling10.1 The insula
40、tion shall be sampled in accordance withPractice C 390. Specific provision for sampling shall be agreedupon between the purchaser and the supplier as part of thepurchase contract.11. Qualification Requirements11.1 The following requirements are generally employed forpurpose of initial material or pr
41、oduct qualification:11.1.1 Flexural strength.11.1.2 Compression strength.11.1.3 Mass loss by tumbling.11.1.4 Linear shrinkage after soaking heat.11.1.5 Hot surface performance.11.1.6 Apparent thermal conductivity.11.1.7 Surface burning characteristics.11.1.8 Moisture content.12. Test Methods12.1 The
42、 properties enumerated in this specification shall bedetermined in accordance with the following test methods.Samples shall be preconditioned in accordance with PracticeC 870.12.1.1 Density and Dimensions:12.1.1.1 Block InsulationTest Method C 303.12.1.1.2 Pipe InsulationTest Method C 302.12.1.2 App
43、arent Thermal Conductivity:12.1.2.1 GeneralApparent thermal conductivity versusmean temperature shall be calculated in accordance withPractice C 1045. Determinations shall be made at four or moremean temperatures. Two of the test mean temperatures shall bewithin 50F (28C) of the highest and lowest m
44、ean temperaturespecified in Table 1 for the appropriate material type. The othertwo determinations shall be made at mean temperatures spacedequally within the specified range. All test temperatures shallbe selected in accordance with Practice C 1058 and reported inthe test results.12.1.2.2 The resul
45、ts of these tests shall be interpolatedthrough reasonable curve fitting or numerical techniques, toestablish the apparent thermal conductivity at the specifiedmean temperature.12.1.2.3 Block InsulationTest Methods C 177, C 518, orC 1114 using 112 612 in. (38 6 13 mm) thick specimens ofblock insulati
46、on.12.1.2.4 Pipe InsulationTest Method C 335 using 112 612 in. (386 13 mm) thick specimens of pipe insulation assupplied for a fit to 3 in. nominal iron pipe.12.1.3 Linear Shrinkage After Heat SoakingTest MethodC 356. The test temperature shall be as specified in 4.1.12.1.4 Flexural Strength:12.1.4.
47、1 Block InsulationTest Methods C 203.12.1.4.2 Pipe InsulationTest Method C 446.12.1.5 Compressive Strength (Block Insulation Only)TestMethod C 165, Procedure A.12.1.6 Mass Loss by TumblingTest Method C 421.12.1.7 Hot Surface PerformanceTest Method C411. Thetest temperature shall be that specified in
48、 4.1 or the manufac-turers recommended temperature limit, whichever is higher.The thickness of the specimen shall be the manufacturersrecommended thickness for the test temperature.12.1.8 Surface Burning CharacteristicsTest Method E84.12.1.9 Stress Corrosion PerformanceIf requested by thepurchaser,
49、test according to the test method in SpecificationC 795.12.1.10 Moisture Content By Dry Weight:See Test Method C 1616.C53307313. Inspection13.1 The following requirements are generally employedfor purposes of acceptance sampling of lots or shipments ofqualified calcium silicate insulation:13.1.1 Density,13.1.2 Dimensional tolerances, and13.1.3 Workmanship.14. Rejection14.1 Failure to conform to the requirements in this specifi-cation shall constitute cause for rejection. Rejection s
