1、Designation: C533 13Standard Specification forCalcium Silicate Block and Pipe Thermal Insulation1This standard is issued under the fixed designation C533; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A
2、 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 Department of Defense.1. Scope1.1 This specification covers calcium silicate block and
3、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 standard. The values given in parentheses are mathematicalconversions t
4、o SI units that are provided for information onlyand are not considered standard.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.
5、It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2. Referenced Documents2.1 ASTM Standards:2C165 Test Method for Measuring Compressive Properties ofThermal InsulationsC168
6、Terminology Relating to Thermal InsulationC177 Test Method for Steady-State Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate ApparatusC203 Test Methods for Breaking Load and Flexural Proper-ties of Block-Type Thermal InsulationC302 Test Method for Density
7、and Dimensions of Pre-formed Pipe-Covering-Type Thermal InsulationC303 Test Method for Dimensions and Density of Pre-formed Block and BoardType Thermal InsulationC335 Test Method for Steady-State Heat Transfer Propertiesof Pipe InsulationC356 Test Method for Linear Shrinkage of Preformed High-Temper
8、ature Thermal Insulation Subjected to SoakingHeatC390 Practice for Sampling and Acceptance of ThermalInsulation LotsC411 Test Method for Hot-Surface Performance of High-Temperature Thermal InsulationC421 Test Method for Tumbling Friability of PreformedBlock-Type and Preformed Pipe-Covering-Type Ther
9、malInsulationC446 Test Method for Breaking Load and Calculated Modu-lus of Rupture of Preformed Insulation for Pipes (With-drawn 2002)3C518 Test Method for Steady-State Thermal TransmissionProperties by Means of the Heat Flow Meter ApparatusC585 Practice for Inner and Outer Diameters of ThermalInsul
10、ation for Nominal Sizes of Pipe and TubingC795 Specification for Thermal Insulation for Use in Con-tact with Austenitic Stainless SteelC870 Practice for Conditioning of Thermal Insulating Ma-terialsC1045 Practice for Calculating Thermal Transmission Prop-erties Under Steady-State ConditionsC1058 Pra
11、ctice for Selecting Temperatures for Evaluatingand Reporting Thermal Properties of Thermal InsulationC1114 Test Method for Steady-State Thermal TransmissionProperties by Means of the Thin-Heater ApparatusC1616 Test Method for Determining the Moisture Contentof Organic and Inorganic Insulation Materi
12、als by WeightC1617 Practice for Quantitative Accelerated LaboratoryEvaluation of Extraction Solutions Containing IonsLeached from Thermal Insulation on Aqueous Corrosionof MetalsE84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE136 Test Method for Behavior of Materials in a Ve
13、rticalTube Furnace at 750C1This 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, 2013. Published March 2013. Originallyapproved in 1
14、964 to replace C344 and C345. Last previous edition approved in 2011as C533 11. DOI: 10.1520/C0533-13.2For 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
15、Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13. Terminology3.1 DefinitionsFor definitions used in this spe
16、cification,see Terminology C168.4. Classification4.1 Thermal insulation shall be of the following types:4.1.1 Type IBlock for use on surfaces at temperature from80F (27C) to to 1200F (649C).4.1.2 Type IPipe for use on surfaces at temperature from80F (27C) to 1200F (649C).4.1.3 Type IABlock for use o
17、n surfaces at temperaturesfrom 80F (27C) to 1200F (649C).4.1.4 Type IIBlock for use on surfaces at temperaturesfrom 80F (27C) to 1700F (927C).5. Description5.1 CompositionCalcium silicate thermal insulation shallconsist principally of hydrous calcium silicate usually with theincorporation of fibrous
18、 reinforcement. Asbestos shall 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 i
19、n the form of pipe insulation, 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 m
20、m) in12-in.(13-mm) increments. Thicknesses greater than 3 in. (76 mm)shall be furnished in one or more layers as agreed upon bypurchaser and manufacturer.TABLE 1 Physical RequirementsNOTE 1The physical requirements are based on the properties of samples dried or conditioned, or both, as specified in
21、 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 advised that some applicat
22、ions 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 IA Type IIBlock and Pipe Block BlockUse temperature, max, F (C) 1200 (649) 1200 (64
23、9) 1700 (927)Density (dry), max, lb/ft3(kg/m3) 15 (240) 22 (352) 22 (352)Flexural strength, min, psi (kPa) 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, %after first 10 minutes 20 20 20after second 10 minutes
24、 40 40 40Soaking heat linear shrinkage, max,% 2 2 2Hot surface performance:warpage, max, in. (mm)14 (6)14 (6)14 (6)cracking No cracks completely through the insulation thickness. Surface cracks on hot face are acceptableApparent thermal conductivityA(seeNote 2)Btu-in./h-ft2-F (W/m-K)max at meantempe
25、rature of:100F (38C) 0.41 (0.059) 0.50 (0.072) 0.50 (0.072)200F (93C) 0.45 (0.065) 0.54 (0.078) 0.54 (0.078)300F (149C) 0.50 (0.072) 0.58 (0.084) 0.58 (0.084)400F (204C) 0.55 (0.079) 0.61 (0.088) 0.61 (0.088)500F (260C) 0.60 (0.087) 0.64 (0.092) 0.64 (0.092)600F (316C) 0.66 (0.095) 0.67 (0.097) 0.67
26、 (0.097)700F (371C) 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)Surface burning characteristics:Flame spread index, max 0 0 0Smoke density index, max 0 0 0Non-Combustibilty Pass Pass PassMass Loss Corrosion RateStress Corrosion
27、Performance# DI WaterPassMoisture content, by weight, max % 20 20 20AThe thermal transmission properties of calcium silicate block and pipe insulation vary with temperature, temperature gradient, moisture content, thickness, and shape.Note that the apparent thermal conductivity requirements in the t
28、able 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 conditions differing substantially from the testconditions.C533 1327.1.2 Curve
29、d 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 mm) in12-in. (13-mm) increments, and curved to inside radii of over1612 in. (419 mm). Individual dimensions shall conform tothose specified
30、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 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 Sil
31、icate Pipe InsulationCalcium silicate pipeinsulation shall be supplied either as hollow cylindrical shapessplit in half lengthwise (in a plane including the cylindricalaxis) or as curved segments. The pipe insulation shall befurnished in sections or segments in a length of 36 in. (914mm) , unless ot
32、herwise 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)increments. Thicknesses greater than 3 in. (76 mm) shall befurnished in one or more layers as agreed upon by between thepurchaser and the manu
33、facturer. Inner and outer diametersshall be in accordance with those standard dimensions speci-fied in Practice C585.NOTE 1When multilayer sectional pipe insulation is required, it isnecessary to consider the inside and outside diameters of each layer toensure proper nesting of materials when instal
34、led. 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 agreed to between purcha
35、ser and manufac-turer.8. Dimensional Tolerances8.1 GeneralThe average tolerances for length, width, andthickness shall be as following:Block PipeLength 18 in.(3mm) 18 in.(3mm)Width 18 in. (3 mm)Thickness 18 in. (3 mm)Inner Diameter in accordance with Practice C585Outer Diameter in accordance with Pr
36、actice C5858.2 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 longitudinalseams on both sides of the pipe in
37、sulation 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 the wall thickness, whichever is
38、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 additional requirementsapply only t
39、o 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 the groove. The exposed surface cr
40、ack 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 insulation shall be sampled in accordanc
41、e withPractice C390. 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 product qualification:11.1.1 Flexural
42、 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.11.1.9 Non-Combustibility.11.1.10 Stress Corrosion Performa
43、nce (Type I only).11.1.11 Mass Loss Corrosion Rate (Type I only).12. Test Methods12.1 The properties enumerated in this specification shall bedetermined in accordance with the following test methods.Samples shall be preconditioned in accordance with PracticeC870.12.1.1 Density and Dimensions:12.1.1.
44、1 Block InsulationTest Method C303.12.1.1.2 Pipe InsulationTest Method C302.12.1.2 Apparent Thermal Conductivity:12.1.2.1 GeneralApparent thermal conductivity versusmean temperature shall be calculated in accordance withPractice C1045. Determinations shall be made at four or moremean temperatures. T
45、wo of the test mean temperatures shall bewithin 50F (28C) of the highest and lowest mean 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
46、in accordance with Practice C1058 and reported inthe test results.12.1.2.2 The results 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 C1
47、77, C518,orC1114 using 112 612 in. (38 6 13 mm) thick specimens ofblock insulation.C533 13312.1.2.4 Pipe InsulationTest Method C335 using 112 612in. (386 13 mm) thick specimens of pipe insulation as suppliedfor a fit to 3 in. nominal iron pipe.12.1.3 Linear Shrinkage After Heat SoakingTest MethodC35
48、6. The test temperature shall be as specified in 4.1.12.1.4 Flexural Strength:12.1.4.1 Block InsulationTest Methods C203.12.1.4.2 Pipe InsulationTest Method C446.12.1.5 Compressive Strength (Block Insulation Only)TestMethod C165, Procedure A.12.1.6 Mass Loss by TumblingTest Method C421.12.1.7 Hot Su
49、rface PerformanceTest Method C411. Thetest temperature shall be that specified in 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 CharacteristicsThe flame spreadindex and the smoke development index shall be determinedusing Test Method E84.12.1.9 Stress Corrosion PerformanceTest according to thetest method in Specification
