1、Designation: C1729M 15Standard Specification forAluminum Jacketing for Insulation1This standard is issued under the fixed designation C1729M; 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 pa
2、rentheses 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 b
3、oth 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 foraluminu
4、m 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 installatio
5、n of aluminumjacketing, see (1).21.4 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.NOTE 1A version of this specification in inch-pound units is availableas Specification C1729.1.5 This standard does not purport to address all
6、of thesafety 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
7、 Aluminum 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 TubingC835 Test
8、 Method for Total Hemispherical Emittance ofSurfaces up to 1400CC1371 Test Method for Determination of Emittance ofMaterials Near Room Temperature Using Portable Emis-sometersC1423 Guide for Selecting Jacketing Materials for ThermalInsulationC1729 Specification for Aluminum Jacketing for InsulationC
9、1785 Test Method for Concentration of Pinhole Detectionsin Moisture Barriers on Metal JacketingD3363 Test Method for Film Hardness by Pencil TestE84 Test Method for Surface Burning Characteristics ofBuilding MaterialsF1249 Test Method for Water Vapor Transmission RateThrough Plastic Film and Sheetin
10、g 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 Definitions of Terms Specific to This Standard:3.2.1 box ribaluminum sh
11、eet formed to have alternatingparallel grooves and ridges with a cross section approximatinga square wave.3.2.2 cladding (as related to insulation jacketing)synonymous with jacketing.3.2.2.1 DiscussionThe three terms “jacketing”, “lagging”,and “cladding” are considered synonymous in most metaljacket
12、 related applications and geographies. However, in somecases in the power industry in North America the term“lagging” has a different meaning than “jacketing” or “clad-ding” and refers specifically to a heavier gauge of jacketing.1This specification is under the jurisdiction of ASTM Committee C16 on
13、Thermal Insulation and is the direct responsibility of Subcommittee C16.40 onInsulation Systems.Current edition approved Nov. 1, 2015. Published November 2015. Originallyapproved in 2013. Last previous edition approved in 2014 as C1729M14a. DOI:10.1520/C1729M15.2The boldface numbers in parentheses r
14、efer to a list of references at the end ofthis standard.3For 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 Summary page onthe ASTM website.4Avai
15、lable from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.2.3 crevice corrosionLocalized corrosion of metal jack-eting s
16、urface at, or immediately adjacent to, an area that isshielded from full exposure to the environment because ofclose proximity between the metal and the surface of anothermaterial.3.2.4 cross crimpedsynonymous with 4.8 mm corrugated.3.2.5 deep corrugatedaluminum sheet formed to havealternating paral
17、lel grooves and ridges with a cross sectionapproximating a sine wave.3.2.6 finishthe texture of the aluminum surface.3.2.7 gorejacketing for elbows, fittings, or other non-straight portions of the piping system made from a multitude ofsimilar overlapping pieces.3.2.8 lagging (as related to insulatio
18、n jacketing)synonymous with jacketing.3.2.8.1 DiscussionThe three terms “jacketing”, “lagging”,and “cladding” are considered synonymous in most metaljacket related applications and geographies. However, in somecases in the power industry in North America the term“lagging” has a different meaning tha
19、n “jacketing” or “clad-ding” and refers specifically to a heavier gauge of jacketing.3.2.9 moisture retarder (moister barrier)a layer of plasticfilm or other material applied to the inner side of metaljacketing to inhibit jacket corrosion by interfering with theformation of a galvanic cell between t
20、he dissimilar metals ofthe pipe and jacket or by preventing crevice corrosion.3.2.9.1 DiscussionA moisture retarder is not an insulationsystem water vapor retarder and does not perform the samefunction.3.2.10 polykrafta multilayer composite film used as amoisture retarder on metal jacketing consisti
21、ng of at least onelayer of minimum 65 g/m2kraft paper and one or more layersof plastic film, usually polyethylene at a minimum thickness of38 microns.3.2.11 polyfilma multilayer film used as a moisture re-tarder on metal jacketing consisting of at least one layer ofethylene/methacrylic acid copolyme
22、r and one or more layers ofother polymers, usually polyethylene.3.2.12 safety edgean edge of metal jacketing that has beende-burred or rounded by a rolling operation.3.2.13 safety hema rounded edge of metal jacketing cre-ated by folding the edge of sheet jacketing completely backupon itself using a
23、roll former or a brake.3.2.13.1 DiscussionThe fold is typically made toward theunderside of the jacketing so that the original edge is hiddenand the external appearance of the jacketing is preserved.3.2.14 splice rollmetal jacketing sold in roll form wherethe package contains two separate pieces of
24、metal jacketingrolled approximately end to end.3.2.14.1 DiscussionA splice roll occurs when the metalcoil being used to form the roll jacketing reaches its end beforethe required roll length is obtained.3.2.15 split rollsynonymous with splice roll.4. Significance and Use4.1 This specification is use
25、d 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 appropriate aluminum jacketing.5. Classification5.1 Classification of a
26、luminum jacketing is based on threefactors:5.1.1 Outer surface treatment and emittance ():5.1.1.1 Type I = Bare surface, = 0.1,5.1.1.2 Type II = Painted with pigmented paint, = 0.8,5.1.1.3 Type III = Painted with unpigmented paint, = 0.5,and5.1.1.4 Type IV = Plastic film coated surface, = 0.85.5.1.1
27、.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 3105 or 3003, half hard temper(H14 or H24,)5.1.2.2 Grade 2 = Alloy
28、 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 3004,5.1.2.5 Grade 5 = Alloy Alclad 3004 (alloy 3004 clad bothsides with alloy 7072 for improved corrosion resistance), and5.1.2.6 Grade 6 = Alloy 5052.5.1.3 Moisture
29、 Retarder:5.1.3.1 Class A = polyfilm, 76 microns 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 2Class B was removed in 2011 because it was not used orproduced. The remaining Classes were not renumbered to avoid conflictswit
30、h 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 fit thesurface to which they
31、 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, 4.8 mm corrugated, or stucco embossed.The dimensions of corrugations (pitch and depth) must beagreed to by
32、manufacturer and purchaser to achieveinterchangeability, constant rigidity, and appearance.6.3 When agreed upon by purchaser and seller, aluminumsheets used as pipe insulation jacketing (see 8.2) shall have asafety edge or a 10 15 mm safety hem along one entire widthedge of the sheet. Aluminum jacke
33、ting with a safety edge orsafety hem must still meet the length dimensions specified in8.2.1. A safety hem shall not be specified when the finish is 4.8mm corrugated.C1729M 1526.4 In most cases, the inner surface of aluminum jacketingmaterial is coated or covered with a moisture resistant film toret
34、ard possible galvanic or chemical corrosion, or both, of thejacketing.6.5 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.6.6 The aluminum used in
35、this jacketing, with the exceptionof box rib, shall be manufactured from Specification B209,alloys 3003, 3105, or 1100 with tempers of H14 or H24 (halfhard), H12 (quarter hard), or dead soft Grades 1, 2, or 3 per5.1.2.6.7 Aluminum jacketing shall be specified by the thicknessof the aluminum layer wh
36、ich shall be in the range from 0.4 to1.3 mm.NOTE 3The thickness values mentioned in 6.7, 6.8, 6.9, and 6.10 arenominal thickness. The tolerances shown in Table 1 apply to these listednominal values.6.8 The measured thickness of metal jacketing will beinfluenced by any forming or rolling such as that
37、 described in10.5.All requirements for and discussion of jacketing thicknessand thickness tolerance in this document including Table 1 andTable 2 apply to the base metal before any forming or rollingand do not include any coatings or films that are applied to thesurface such as the moisture barriers
38、 described in 5.1.3.6.9 Box rib aluminum jacketing pieces shall be manufac-tured from Specification B209, alloys 3003 or 3105 (Grade 1),alloys 3004 or Alclad 3004 (Grades 4 and 5), or alloy 5052(Grade 6) per Section 5.1.2 and shall be 0.8 mm, 1.0 mm, 1.2mm, or 1.3 mm thick.NOTE 4Typical box rib widt
39、hs available are 1159 mm, 978 mm, and699 mm. Typical lengths available are 2.44, 3.05, and 3.66 m. The patternof grooves and ridges typically repeats on 102 mm centers and the heightof each rib is typically 25 mm.6.10 Deep corrugated aluminum jacketing pieces shall be0.4 mm, 0.5 mm, 0.6 mm, 0.8 mm,
40、1.0 mm, and 1.2 mm thick.6.10.1 Typical deep corrugated width is 838 mm and typicallength is 1.81 to 3.66 m. Two nominal repeating patterns arecommon 32 mm on centers witha6mmheight and a 64 mmon centers with a 16 mm height. For specific repeating patterndistances, the manufacturer shall be consulte
41、d.7. Physical Properties7.1 Required physical properties are shown in Table 2 andTable 3.NOTE 5See section 10.9 for further information regarding Table 2.7.2 All aluminum jacketing shall demonstrate a flamespread of 25 or less and smoke developed of 50 or less whentesting the outer side (the side op
42、posite that contacting theinsulation) in accordance with 11.2.NOTE 6Aluminum jacketing is not typically considered a fire resistantmaterial. If a higher level of fire resistance or protection is required,alternative jacketing materials usually based on steel, should be consid-ered.7.3 Unless otherwi
43、se 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 = 0.8 which is typical for a pigmented paint,7.3.3 Type III = 0.5 which is typical of an unpigmentedpaint, and
44、7.3.4 Type IV = 0.85 which is typical of a plastic filmsurface.NOTE 7Testing of the emittance of Type I has yielded initialunoxidized values ranging from 0.03 to 0.05 and oxidized “in-service”values ranging from 0.1 to 0.31 (2, 3, 4, 5, 6). The use of an emittance of0.1 is recommended here as being
45、the most conservative value. 7.3addresses the situation where a user of this standard wishes to consider adifferent emittance value.7.4 Permissible thickness tolerances vary with nominalthickness and are shown in Table 1. Thickness is measured per11.3.7.5 Requirements for permissible pinhole detecti
46、ons in themoisture retarder when tested per Test Method C1785 areshown in Table 3.TABLE 1 Permissible Thickness TolerancesNominal thickness inin.(mm)Thickness tolerance mm for1 m wide jacketingand deep corrugated sheet1.22 m wide jacketingand box rib sheetover 0.25 through 0.40 0.025 0.038over 0.40
47、through 0.64 0.038 0.051over 0.64 through 0.8 0.051 0.064over 0.8 through 1.0 0.051 0.076over 1.0 through 1.2 0.064 0.089over 1.2 through 1.6 0.076 0.089TABLE 2 SI Equivalent Thickness for Pipe JacketingJacket Thickness inInchPound Units(in.)Jacket Thickness in SIUnits (mm)0.016 0.40.020 0.50.024 0.
48、60.032 0.80.040 1.0C1729M 1537.6 The moisture retarder shall have no visual defect thatwill affect performance and shall be free of laminatedseparations, holes, rips, tears, scratches, dents, non-uniformedges, or creases.7.7 Requirements for water vapor transmission rate(WVTR) of the moisture retard
49、ers tested per 11.6 are shown inTable 3. Testing the WVTR of moisture retarders is notpossible after they are applied to the aluminum jacketing sothis testing 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 designed toaccommodate the pipe insulation circumference shall be calledthe length and the oth
