1、Designation: C1729 12Standard Specification forAluminum Jacketing for Insulation1This standard is issued under the fixed designation C1729; 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 pare
2、ntheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers aluminum jacketing for ther-mal and acoustical insulation operating at either above orbelow ambient temperatures and in bot
3、h indoor and outdoorlocations. It does not cover insulation jacketing made fromother materials such as mastics, fiber reinforced plastic, PVC,or stainless steel nor does it cover the details of thermal oracoustical insulation systems.1.2 This specification provides physical requirements foraluminum
4、jacketing for thermal and acoustical insulation.Guide C1423 provides guidance in selecting jacketing materi-als and their safe use.1.3 This is a material specification and does not imply anyperformance of the installed system using the materials speci-fied herein. For information about installation
5、of aluminumjacketing, see (1).21.4 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 for information onlyand are not considered standard.1.5 This standard does not purport to address all of t
6、hesafety 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 regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:3B209 Specification for Alu
7、minum and Aluminum-AlloySheet and PlateC168 Terminology Relating to Thermal InsulationC450 Practice for Fabrication of Thermal Insulating FittingCovers for NPS Piping, and Vessel LaggingC585 Practice for Inner and Outer Diameters of ThermalInsulation for Nominal Sizes of Pipe and TubingC1371 Test Me
8、thod for Determination of Emittance ofMaterials Near Room Temperature Using Portable Emis-sometersC1423 Guide for Selecting Jacketing Materials for ThermalInsulationD3363 Test Method for Film Hardness by Pencil TestE84 Test Method for Surface Burning Characteristics ofBuilding MaterialsF1249 Test Me
9、thod for Water Vapor Transmission RateThrough Plastic Film and Sheeting Using a ModulatedInfrared Sensor2.2 ANSI Standard:4ANSI H35.2/H35.2(M) Dimensional Tolerances for Alumi-num Mill Products3. Terminology3.1 DefinitionsDefinitions in Terminology C168 apply toterms used in this specification.3.2 D
10、efinitions of Terms Specific to This Standard:3.2.1 box ribaluminum sheet formed to have alternatingparallel grooves and ridges with a cross section approximatinga square wave3.2.2 claddingsynonymous with jacketing3.2.3 crevice corrosiona type of corrosion occurring onmetal jacketing caused by diffe
11、rences in oxygen concentrationin the electrolyte in adjacent regions of the material. Thesedifferences lead to a concentration cell and the region on themetal jacketing which is oxygen-starved is subject to corro-sion.3.2.4 cross crimpedsynonymous with316 in. corrugated3.2.5 deep corrugatedaluminum
12、sheet formed to havealternating parallel grooves and ridges with a cross sectionapproximating a sine wave3.2.6 finishthe texture of the aluminum surface3.2.7 gorejacketing for elbows, fittings, or other non-straight portions of the piping system made from a multitude ofsimilar overlapping pieces3.2.
13、8 laggingsynonymous with jacketing3.2.9 moisture retarder (moister barrier)a layer of plasticfilm or other material applied to the inner side of metal1This specification is under the jurisdiction of ASTM Committee C16 onThermal Insulation and is the direct responsibility of Subcommittee C16.40 onIns
14、ulation Systems.Current edition approved Jan. 1, 2012. Published January 2012. Originallyapproved in 2010. Last previous edition approved in 2011 as C172911. DOI:10.1520/C172912.2The boldface numbers in parentheses refer to a list of references at the end ofthis standard.3For referenced ASTM standar
15、ds, 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 Summary page onthe ASTM website.4Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, N
16、ew York, NY 10036, http:/www.ansi.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.jacketing to inhibit jacket corrosion by interfering with theformation of a galvanic cell between the dissimilar metals ofthe pipe and jacket or by
17、 preventing crevice corrosion.3.2.9.1 DiscussionAmoisture retarder is not an insulationsystem water vapor retarder and does not perform the samefunction.3.2.10 polykraft a multilayer composite film used as amoisture retarder on metal jacketing consisting of at least onelayer of minimum 40 lb kraft p
18、aper and one or more layers ofplastic film, usually polyethylene at a minimum thickness of1.5 mils.3.2.11 polysurlyna multilayer film used as a moistureretarder on metal jacketing consisting of at least one layer ofethylene/methacrylic acid copolymer and one or more layers ofother polymers, usually
19、polyethylene.4. Significance and Use4.1 This specification is used to specify material by physicalproperty requirements that address the prerequisites in Sections6 to 10. The designer of an insulation system, after determiningthe system requirements, shall use this specification to specifythe approp
20、riate aluminum jacketing.5. Classification5.1 Classification of aluminum jacketing is based on threefactors:5.1.1 Outer surface treatment and emittance (e):5.1.1.1 Type I = Bare surface, = 0.15.1.1.2 Type II = Painted with pigmented paint, = 0.8,5.1.1.3 Type III = Painted with unpigmented paint, = 0
21、.5,and5.1.1.4 Type IV = Plastic film coated surface, = 0.85.5.1.1.5 Paint systems for Types II and III must be factoryapplied and baked on.5.1.1.6 Plastic film for Type IV must be factory applied andheat laminated to the surface.5.1.2 Alloy and Temper per Specification B209:5.1.2.1 Grade 1 = Alloy 3
22、105 or 3003, half hard temper(H14,)5.1.2.2 Grade 2 = Alloy 3105 or 3003, quarter hard temper(H12 - lock forming quality),5.1.2.3 Grade 3 = Alloy 1100, dead soft temper,5.1.2.4 Grade 4 = Alloy 3004, and5.1.2.5 Grade 5 = Alloy Alclad 3004 (alloy 3004 clad bothsides with alloy 7072 for improved corrosi
23、on resistance).5.1.3 Moisture Retarder:5.1.3.1 Class A = polysurlyn, 3 mil thick,5.1.3.2 Class C = polykraft per section 3.2.10,5.1.3.3 Class D = painted, and5.1.3.4 ClassE=nomoisture retarder.NOTE 1Class B was removed in 2011 because it was not used orproduced. The remaining Classes were not renumb
24、ered to avoid conflictswith engineering specifications that reference the remaining Classes.6. Materials and Manufacture6.1 Aluminum jacketing materials are composed of a singlematerial or a lamination of several components. The materialsare supplied in the form of rolls or sheets or preformed to fi
25、t thesurface to which they are to be applied. The materials areapplied in the field or as a factory-applied composite with theinsulation.6.2 The primary material shall be aluminum and shall havea finish that is smooth,316 in. corrugated, or stucco embossed.The dimensions of corrugations (pitch and d
26、epth) must beagreed to by manufacturer and purchaser to achieve inter-changeability, constant rigidity, and appearance.6.3 In most cases, the inner surface of aluminum jacketingmaterial is coated or covered with a moisture resistant film toretard possible galvanic or chemical corrosion, or both, of
27、thejacketing.6.4 For highly corrosive ambient conditions or to increaseemittance, the purchaser shall specify that the outer surface ofthe aluminum be coated with a pigmented or unpigmentedpaint or with a plastic film.6.5 The aluminum used in this jacketing, with the exceptionof box rib, shall be ma
28、nufactured from Specification B209,alloys 3003, 3105, or 1100 with tempers of H14 (half hard),H12 (quarter hard), or dead soft Grades 1, 2, or 3 per 5.1.2.6.6 Aluminum jacketing shall be specified by the thicknessof the aluminum layer which shall be in the range from 0.016to 0.050 in. (0.41 to 1.27
29、mm)6.7 Box rib aluminum jacketing pieces shall be manufac-tured from Specification B209, alloys 3003 or 3105 (Grade 1)or alloys 3004 or Alclad 3004 (Grades 4 and 5) per Section5.1.2 and shall be 0.032 in. (0.8 mm), 0.040 in. (1.0 mm), 0.048in. (1.2 mm), or 0.050 in (1.3 mm) thick.NOTE 2Typical box r
30、ib widths available are 45-58 in. (1159 mm),38.5 in. (978 mm), and 27.5 in. (699 mm). Typical lengths available are 8,10, and 12 ft (2.4, 3.0, and 3.7 m). The pattern of grooves and ridgestypically repeats on 4 in. (102 mm) centers and the height of each rib istypically 1 in. (25 mm).6.8 Deep corrug
31、ated aluminum jacketing pieces shall be0.016 in. (0.4 mm), 0 .020 in. (0.5 mm), 0.024 in. (0.6 mm),0.032 in. (0.8 mm), 0.040 in. (1.0 mm), or 0.048 in. (1.2 mm)thick.6.8.1 Typical deep corrugated width is 33 in. (838 mm) andtypical length is 6 to 12 ft (1.8 to 3.7 m). Two nominalrepeating patterns a
32、re common 1-14 in. (32 mm) on centerswith a14 in. (6 mm) height and a 2-12 in. (64 mm) on centerswith a58 in. (16 mm) height. For specific repeating patterndistances, the manufacturer shall be consulted.7. Physical Properties7.1 Required physical properties are shown in Table 1 andTable 2.7.2 All al
33、uminum jacketing shall demonstrate a flamespread of 25 or less and smoke developed of 50 or less whenTABLE 1 Minimum Thickness for Pipe JacketingMinimum Allowable Aluminum Thickness (in.)Outer InsulationDiameter (in.)RigidInsulationNon-RigidInsulation# 8 0.016 0.016over 8 thru 11 0.016 0.020over 11
34、thru 24 0.016 0.024over 24 thru 36 0.020 0.032over 36 0.024 0.040C1729 122testing the outer side (the side opposite that contacting theinsulation) in accordance with 11.2.NOTE 3Aluminum jacketing is not typically considered a fire resistantmaterial. If a higher level of fire resistance or protection
35、 is required,alternative jacketing materials usually based on steel, should be consid-ered.7.3 Unless otherwise specified by the manufacturer, theemittance of the jacketing shall be considered to be:7.3.1 Type I = 0.1 which is typical for a normally oxidizedaluminum jacket in service,7.3.2 Type II =
36、 0.8 which is typical for a pigmented paint,7.3.3 Type III = 0.5 which is typical of an unpigmentedpaint, and7.3.4 Type IV = 0.85 which is typical of a plastic filmsurface.NOTE 4Testing of the emittance of Type I has yielded initial unoxi-dized values ranging from 0.03 to 0.05 and oxidized “in-servi
37、ce” valuesranging from 0.1 to 0.31 (2, 3, 4, 5, 6). The use of an emittance of 0.1 isrecommended here as being the most conservative value. 7.3 addresses thesituation where a user of this standard wishes to consider a differentemittance value.7.4 Permissible thickness tolerances vary with nominalthi
38、ckness and are shown in Table 3. Thickness is measured per11.3.7.5 Requirements for permissible pinholes in the moistureretarder when tested per 11.4 are shown in Table 2.7.6 The moisture retarder shall have no visual defect thatwill affect performance and shall be free of laminated separa-tions, ho
39、les, rips, tears, scratches, dents, non-uniform edges, orcreases.7.7 Requirements for water vapor transmission rate(WVTR) of the moisture retarders tested per 11.6 are shown inTable 2. Testing the WVTR of moisture retarders is notpossible after they are applied to the aluminum jacketing sothis testi
40、ng shall be done on the moisture retarders prior toapplication.8. Dimensions and Permissible Variations8.1 Dimensions for aluminum jacketing shall be as agreedto by purchaser and seller.8.2 When cut into sheets for use as pipe insulation jacketing,the dimension of the aluminum jacketing sheet design
41、ed toTABLE 2 Physical PropertiesType I II III IVGrade All All All AllClass A C D E A C D E A C D E A C D EEmittance 0.1 0.1 0.1 0.1 0.8 0.8 0.8 0.8 0.5 0.5 0.5 0.5 0.85 0.85 0.85 0.85Surface Burning(flame/smoke max)25/50 25/50 25/50 25/50 25/50 25/50 25/50 25/50 25/50 25/50 25/50 25/50 25/50 25/50 2
42、5/50 25/50Moisture retarderpinholes#5 #5 #5 n.a. #5 #5 #5 n.a. #5 #5 #5 n.a. #5 #5 #5 n.a.Moisture retarder WVTR(g/100 in2/day)#0.1 #1.1 n.a. n.a. #0.1 #1.1 n.a. n.a. #0.1 #1.1 n.a. n.a. #0.1 #1.1 n.a. n.a.Outer Paint Thickness(mils)n.a. n.a. n.a. n.a. 0.7-0.8 0.7-0.8 0.7-0.8 0.7-0.8 0.3-0.4 0.3-0.4
43、 0.3-0.4 0.3-0.4 n.a. n.a. n.a. n.a.Outer Paint Pencil Hardness(min)n.an.an.an.aHHHHHHHHn.an.an.an.aTABLE 3 Permissible Thickness TolerancesNominal thickness inin.(mm)Thickness tolerance in in. (mm) forUp to 39.4 in. (1 m) wide jacketingand deep corrugated sheet48 in. (1.22 m) wide jacketingand box
44、rib sheetover 0.010 thru 0.016(over 0.254 thru 0.406)0.0010 (0.0254) 0.0015 (0.0381)over 0.016 thru 0.025(over 0.406 thru 0.635)0.0015 (0.0381) 0.0020 (0.0508)over 0.025 thru 0.032(over 0.635 thru 0.813)0.0020 (0.0508) 0.0025 (0.0635)over 0.032 thru 0.039(over 0.813 thru 0.991)0.0020 (0.0508) 0.0030
45、 (0.0762)over 0.039 thru 0.047(over 0.991 thru 1.194)0.0025 (0.0635) 0.0035 (0.0889)over 0.047 thru 0.063(over 1.194 thru 1.600)0.0030 (0.0762) 0.0035 (0.0889)C1729 123accommodate the pipe insulation circumference shall be calledthe length and the other major dimension shall be identified asthe widt
46、h.8.2.1 The length shall be a minimum of the outer circum-ference of the insulation plus 2 in. (51 mm) for insulation outerdiameter # 20 in. (508 mm) and a minimum of the outercircumference of the insulation plus 2.5 in. (64 mm) forinsulation outer diameter 20 in. (508 mm).8.2.2 Typical width is 36
47、in. (0.91 m), 48 in. (1.22 m), or 1meter (39.4 in.).8.2.3 Dimensions differing from these standards are pos-sible but must be agreed to by purchaser and seller.8.2.4 Tolerances for aluminum jacketing sheets shall be 618 in. (6 3mm) in width and length.8.3 When cut into sheets for use as equipment an
48、d vesselinsulation jacketing, the longer dimension of the box rib orcorrugated aluminum jacketing sheet shall be called the lengthand the other (shorter) major dimension shall be identified asthe width.8.3.1 Typical width of deep corrugated aluminum sheet is33 in. (84 mm).8.3.2 Typical lengths of de
49、ep corrugated aluminum sheet are6 to 12 ft (1.8 to 3.7 m).8.3.3 Typical widths of box rib aluminum sheet are 45-58 in.(1159 mm), 38.5 in. (978 mm), and 27.5 in. (699 mm).8.3.4 Typical lengths of box rib aluminum sheet are 8, 10,and 12 ft (2.4, 3.0, and 3.7 m)8.3.5 Dimensions differing from these standards are pos-sible but must be agreed to by purchaser and seller.8.3.6 Width and length tolerances for aluminum jacketingdeep corrugated sheets and box rib shall be 618 in. (6 3mm)within a lot and 612 in. (6 13 mm) between lots.8.4 When alumi
