1、Designation: C 592 08aStandard Specification forMineral Fiber Blanket Insulation and Blanket-Type PipeInsulation (Metal-Mesh Covered) (Industrial Type)1This standard is issued under the fixed designation C 592; the number immediately following the designation indicates the year oforiginal adoption o
2、r, in the case of revision, the year of last revision. 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 the composition, dimensions,and physical properties
3、of metal-mesh covered mineral fiber(rock, slag, or glass) blanket and blanket-type pipe insulation(typically on 24 in. (610 mm) diameters or larger) for use oncooled surfaces at temperatures operating below ambient to0F (18C) and on heated surfaces operating at temperaturesup to 1200F (649C). Specif
4、ic applications outside the actualuse temperatures shall be agreed upon between the manufac-turer and purchaser.1.2 For satisfactory performance, properly installed protec-tive vapor retarders or barriers shall be used on below ambienttemperature applications to reduce movement of moisture/water vap
5、or through or around the insulation towards thecolder surface. Failure to use a vapor retarder can lead toinsulation and system damage. Refer to Practice C 921 to aidmaterial selection. Although vapor retarder properties are notpart of this specification, properties required in SpecificationC 1136 a
6、re pertinent to applications or performance.1.3 The orientation of the fibers within the blanket isprimarily parallel to the heated surface. This specification doesnot cover fabricated pipe and tank wrap insulation where theinsulation has been cut and fabricated to provide fiber orien-tation that is
7、 perpendicular to the heated surface.1.4 This standard does not purport to provide the perfor-mance requirements of hourly-rated fire systems. Consult themanufacturer for the appropriate system.1.5 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses a
8、re mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.6 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
9、 and health practices and determine the applica-bility of regulatory requirements prior to use.2. Referenced Documents2.1 ASTM Standards:2C 167 Test Methods for Thickness and Density of Blanketor Batt Thermal InsulationsC 168 Terminology Relating to Thermal InsulationC 177 Test Method for Steady-Sta
10、te Heat Flux Measure-ments and Thermal Transmission Properties by Means ofthe Guarded-Hot-Plate ApparatusC 356 Test Method for Linear Shrinkage of PreformedHigh-Temperature Thermal Insulation Subjected to Soak-ing HeatC 390 Practice for Sampling and Acceptance of ThermalInsulation LotsC411 Test Meth
11、od for Hot-Surface Performance of High-Temperature Thermal InsulationC 447 Practice for Estimating the Maximum Use Tempera-ture of Thermal InsulationsC 518 Test Method for Steady-State Thermal TransmissionProperties by Means of the Heat Flow Meter ApparatusC 665 Specification for Mineral-Fiber Blank
12、et Thermal In-sulation for Light Frame Construction and ManufacturedHousingC 795 Specification for Thermal Insulation for Use in Con-tact with Austenitic Stainless SteelC 680 Practice for Estimate of the Heat Gain or Loss andthe Surface Temperatures of Insulated Flat, Cylindrical,and Spherical Syste
13、ms by Use of Computer ProgramsC 921 Practice for Determining the Properties of JacketingMaterials for Thermal InsulationC 1045 Practice for Calculating Thermal TransmissionProperties Under Steady-State ConditionsC 1058 Practice for Selecting Temperatures for Evaluatingand Reporting Thermal Propertie
14、s of Thermal InsulationC 1104/C 1104M Test Method for Determining the WaterVapor Sorption of Unfaced Mineral Fiber InsulationC 1114 Test Method for Steady-State Thermal TransmissionProperties by Means of the Thin-Heater Apparatus1This specification is under the jurisdiction of ASTM Committee C16 onT
15、hermal Insulation and is the direct responsibility of Subcommittee C16.23 onBlanket and Loose Fill Insulation.Current edition approved Oct. 1, 2008. Published November 2008. Originallyapproved in 1966. Last previous edition approved in 2008 as C 592 08.2For referenced ASTM standards, visit the ASTM
16、website, www.astm.org, orcontact ASTM Customer Service 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
17、States.C 1136 Specification for Flexible, Low Permeance VaporRetarders for Thermal InsulationC 1304 Test Method for Assessing the Odor Emission ofThermal Insulation MaterialsC 1335 Test Method for Measuring Non-Fibrous Content ofMan-Made Rock and Slag Mineral Fiber InsulationC 1338 Test Method for D
18、etermining Fungi Resistance ofInsulation Materials and FacingsE84 Test Method for Surface Burning Characteristics ofBuilding MaterialsE 136 Test Method for Behavior of Materials in a VerticalTube Furnace at 750C2.2 Other Document:CAN/ULC-S102 Standard Method of Test for SurfaceBurning Characteristic
19、s of Building Materials andAssem-blies33. Terminology3.1 Terminology C 168 shall be the terms used in thisspecification.3.2 Definitions of Terms Specific to This Standard:3.2.1 mean temperaturethe sum of the cold surface tem-perature and the hot surface temperature divided by two.3.2.2 metal-mesh co
20、vered blanketmineral fiber thermalinsulation held together by metal-mesh facings on one or bothsides with heat-resistant metal ties attached through the blanketfrom one face to the other.3.2.3 metal-mesh covered blanket-type pipemineral fiberthermal insulation sized to fit around a large Nominal Pip
21、e Size(NPS) and held together by metal-mesh facings on one or bothsides with heat-resistant metal ties attached through the blanketfrom one face to the other.4. Classification4.1 Mineral fiber metal-mesh covered blanket insulationcovered by this specification shall be classified into the threetypes
22、shown in Table 1. The classification is based upon themaximum use temperature and apparent thermal conductivity.5. Ordering Information5.1 The type, dimensions, maximum use temperature, andfacings for one or both sides shall be specified by thepurchaser. A product certification shall be specified in
23、 thepurchase order.6. Materials and Manufacture6.1 CompositionMineral fiber metal-mesh covered blan-ket shall be composed of rock, slag, or glass processed from themolten state into fibrous form, bonded with or without anorganic binder, and secured with metallic supporting facing(s).Asbestos shall n
24、ot be used as an ingredient or component partof the product.6.2 Facings:6.2.1 Types of facings for one or both sides of blanket unitsshall be specified. When both sides are to be faced, units arepermitted to have the same or different types on the two sides.(WarningThe user of this specification is
25、advised that the3Available from Underwriters Laboratories (UL), 333 Pfingsten Rd., North-brook, IL 60062-2096, http:/.TABLE 1 Physical RequirementsProperties Type I Type II Type IIIMaximum use temperature F (C) 850 (454) 1200 (649) 1200 (649)(see 6.2.1) (Excluding metal-meshfacings and metal tie wir
26、es/stitching)Apparent Thermal ConductivityA(Excluding metal-mesh facings andmetal tie wires/stitching)max Btu, in./h ft2F (W/m K)Mean Temperature,F (C)25 (4) 0.21 (0.030) 0.21 (0.030) 0.23 (0.033)75 (24) 0.25 (0.036) 0.25 (0.036) 0.24 (0.035)100 (38) 0.27 (0.039) 0.27 (0.039) 0.26 (0.038)200 (93) 0.
27、34 (0.049) 0.34 (0.049) 0.31 (0.045)300 (149) 0.43 (0.062) 0.42 (0.060) 0.37 (0.053)400 (204) 0.55 (0.079) 0.53 (0.076) 0.44 (0.063)500 (260) 0.70 (0.101) 0.64 (0.092) 0.52 (0.075)600 (316) 0.75 (0.108) 0.60 (0.087)700 (371) 0.86 (0.124) 0.70 (0.101)Linear Shrinkage, max % at maximumuse temperature4
28、.0 4.0 4.0Water Vapor Sorption,Bmax %by weight5.0 5.0 1.25Surface Burning CharacteristicsMaximum-flame spread index 25 25 25Maximum smoke developed index 50 50 50Density maximum,Clb/ft3(kg/m3) 10 (160) 12 (192) 8 (128)AValues for apparent thermal conductivity are for insulation and do not include me
29、sh and wire through insulation thickness. Therefore, Practice C 680 or other heat lossanalysis using these data are not possible without accounting for heat losses through attaching media.BSome water sorption characteristics will change after the product is subjected to elevated temperatures within
30、normal service conditions.CThe maximum density specified is for the weight design purpose only and includes weight for the facings. Additional density requirements including the density for theblanket without facing(s) are permitted to be specified by agreement between the purchaser and the manufact
31、urer or seller.C 592 08a2maximum use temperature of some facings and adhesives willbe lower than the maximum use temperature of the insulation.For example, usually galvanized hexagonal wire-woven net-ting and tie wires or stitching perform well under continuousexposure to temperatures up to 392F (20
32、0C). Exposure totemperatures above this limit will cause the outer free zinclayer to peel. Though there are potential or occasional concernsfor corrosion conditions at various temperatures, galvanizedwire, stitching, or facings are not recommended for tempera-tures above 500F (260C). In addition, th
33、e user of thisspecification shall ensure that sufficient insulation thickness isinstalled so that none of the accessory items (facings, adhesive,coatings, and lagging) are exposed to temperatures above theirmaximum use temperature. Practice C 680 shall be used todetermine surface temperatures.)6.2.2
34、 Standard Types of Metal Mesh Used as Facings:6.2.2.1 Woven netting, No. 20 to 22 gage (0.88 to 0.73 mm)diameter, galvanized wire mesh, 1 in. (25 mm) hexagonalshaped.6.2.2.2 Woven netting, nonferrous No. 20 to 22 gage (0.82to 0.64 mm) diameter, 300 series stainless steel wire mesh, 1in. (25 mm) hexa
35、gonal shaped.6.2.2.3 Stucco expanded metal lath, (painted finish, notflattened, not galvanized) having 1.5 in. (38 mm) diamond-shaped openings, No. 18 gage (1.2 mm) thickness, weighing1.8 lb/yd2(1010 g/m2).6.2.2.4 Expanded metal lath, (painted finish, not flattened,not galvanized) having diamond-sha
36、ped openings, weighing2.5 lb/yd2(1400 g/m2).6.2.3 Other kinds or compositions of facings are permittedto be specified.6.3 Manufacture/Fabrication:6.3.1 Metallic facing(s) or wire mesh(s) shall be secured tothe insulation face on one or both side(s) with minimum(diameter) No. 28 gage (0.32 mm), 300 S
37、eries alloy, non-ferrous stainless steel tie wires or stitching no greater than 12in. (305 mm) apart passing vertically through the blanket.Spacing (attachment pattern) for vertical steel tie wires andstitching must include rows within 2 in. (51 mm) from alledges of the blanket.6.3.2 Minimum (diamet
38、er) No. 28 gage (0.41 mm) galva-nized steel tie wires or stitching are permitted to be used forsecurement with galvanized steel facings.7. Physical Requirements7.1 Handling and TransportingEach piece of metal-meshcovered insulation shall be coherent to permit handling /transportation and installatio
39、n as a unit.7.2 The blanket insulation type shall conform to the follow-ing requirements in Table 1: maximum use temperature,density (for weight design purposes only), apparent thermalconductivity, water vapor sorption, and surface burning char-acteristics.7.3 Odor EmissionA detectable odor of objec
40、tionablenature recorded by more than two of the five panel membersshall constitute rejection of the material when tested inaccordance with 11.6.7.4 Corrosiveness to Steel, Copper, AluminumWhentested and evaluated in accordance with 11.7, the corrosionresulting from the unfaced insulation blanket in
41、contact withmetal plates shall be judged to be no greater than comparativeplates in contact with sterile cotton.7.5 Non-Fibrous (Shot) ContentThe averaged maximumshot content of mineral fiber rock or slag type products shallnot exceed 30 % by weight as defined in 11.3.7.6 Maximum Use TemperatureWhen
42、 tested in accor-dance with 11.1, the blanket insulation shall not warp, flame, orglow during hot surface exposure. No evidence of melting orfiber degradation shall be evident upon post test inspection.7.7 Maximum Exothermic TemperatureWhen tested inaccordance with 11.1, the blanket mid-point temper
43、ature shallnot at any time exceed the hot surface temperature by morethan 100F (55.5C). The 100F (55.5C) criterion appliesduring heat-up as well as steady state conditions. Exceedingthis limit constitutes noncompliance to specification.7.8 Non-CombustibilityWhen tested in accordance with11.10, shall
44、 not exceed the recorded temperature rise more than54F (30C) with no flaming and weight loss exceeding 5 %.7.9 Stress Corrosion to Austenitic Stainless SteelWhenspecified, shall be tested and evaluated in accordance with11.11.7.10 Fungi Resistance Shall be tested in accordance with11.12; growth no g
45、reater than that on a comparative item(white birch wood) shall be considered to have passed the testmethod criteria.8. Dimensions and Permissible Variations8.1 DimensionsStandard sizes of metal-mesh blanket in-sulation shall be as follows:Length = 48 in. (1219 mm) and 96 in. (2438 mm) (except for No
46、minal PipeSizes (NPS) systemWidth = 24 in. (610 mm) and 36 in. (914 mm)Thickness = 1 to 6 in. (25 mm to 152 mm)Ain12 in. (13 mm) increments_AThickness over 2 in. (51 mm) may be composed of two or more blankets pliedtogether to establish total thickness before facings applied.8.2 Dimensional Toleranc
47、esThe average measuredlength, width, and thickness shall differ from the manufactur-ers standard dimensions by not more than the following:Blanket Blanket-Type PipeLength = 612 in. (13 mm) 614 in. (6 mm)Width = 614 in. (6 mm) Not applicableThickness = 614 in. (6 mm),18 in. (3 mm)+14 in. (6 mm),18 in
48、. (3 mm)8.2.1 Pipe Diameters (Fit and Closure)When fittedaround the appropriate size pipe, by banding on 9-in. (229-mm)centers, the longitudinal seams on both sides of the pipeinsulation shall close along the entire length of the section orpiece.9. Workmanship9.1 The insulation blanket shall have go
49、od workmanshipand shall not have defects that adversely affect its installationand performance qualities.10. Sampling10.1 Inspection and qualification of the insulation shall be inaccordance with Practice C 390 or as otherwise specified in theC 592 08a3purchase order or contract as agreed upon between the pur-chaser, supplier, or the manufacturer, or a combination thereof.11. Test Methods11.1 Maximum Use and Exothermic Temperature RiseThe insulation shall be tested in accordance with Test MethodC411 and the hot
