1、Designation: C1729M 16aStandard 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 p
2、arentheses 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
3、both 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 foralumin
4、um 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 installati
5、on 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 fo
7、r Aluminum and Aluminum-AlloySheet and PlateB487 Test Method for Measurement of Metal and OxideCoating Thickness by Microscopical Examination ofCross SectionC168 Terminology Relating to Thermal InsulationC450 Practice for Fabrication of Thermal Insulating FittingCovers for NPS Piping, and Vessel Lag
8、gingC585 Practice for Inner and Outer Diameters of ThermalInsulation for Nominal Sizes of Pipe and TubingC835 Test Method for Total Hemispherical Emittance ofSurfaces up to 1400CC1371 Test Method for Determination of Emittance ofMaterials Near Room Temperature Using Portable Emis-sometersC1423 Guide
9、 for Selecting Jacketing Materials for ThermalInsulationC1729 Specification for Aluminum Jacketing for InsulationC1785 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 Chara
10、cteristics ofBuilding MaterialsF1249 Test Method 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 ap
11、ply toterms used in this specification.3.2 Definitions 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 wave.3.2.2 cladding (as related to insulation jacketing)synonymous with jacketing.3.2
12、.2.1 DiscussionThe three terms “jacketing,” “lagging,”and “cladding” are considered synonymous in most metaljacket related applications and geographies. However, in some1This specification is under the jurisdiction of ASTM Committee C16 onThermal Insulation and is the direct responsibility of Subcom
13、mittee C16.40 onInsulation Systems.Current edition approved Sept. 1, 2016. Published September 2016. Originallyapproved in 2013. Last previous edition approved in 2016 as C1729M 16. DOI:10.1520/C1729M-16A.2The boldface numbers in parentheses refer to a list of references at the end ofthis standard.3
14、For 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.4Available from American National Standards Institute (ANSI),
15、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 States1cases in the power industry in North America the term“lagging” has a different meaning than “jacketing” or “clad-ding” an
16、d refers specifically to a heavier gauge of jacketing.3.2.3 crevice corrosionLocalized corrosion of metal jack-eting surface 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.
17、2.4 cross crimpedsynonymous with 4.8 mm corrugated.3.2.5 deep corrugatedaluminum sheet formed to havealternating parallel 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 p
18、ortions of the piping system made from a multitude ofsimilar overlapping pieces.3.2.8 lagging (as related to insulation jacketing)synonymous with jacketing.3.2.8.1 DiscussionThe three terms “jacketing,” “lagging,”and “cladding” are considered synonymous in most metaljacket related applications and g
19、eographies. 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.3.2.9 moisture retarder (moister barrier)a layer of plasticfilm or other material applied to the
20、inner side of metaljacketing to inhibit jacket corrosion by interfering with theformation of a galvanic cell between the 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 perfo
21、rm the samefunction.3.2.10 polykrafta multilayer composite film used as amoisture retarder on metal jacketing consisting 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 polyfilmin relation to me
22、tal jacketing, a three-layerfilm used as a moisture retarder on metal jacketing consistingof one layer of ethylene/methacrylic acid copolymer and twolayers of other polymers, usually polyethylene.3.2.12 PVdF based paint systema pigmented paint usedon the outer surface of metal jacketing to provide c
23、orrosionresistance and higher emittance than bare metal consisting of afairly thin primer paint layer covered by a thicker topcoat paintlayer where the latter is a polyvinylidene fluoride (PVdF) typepaint.3.2.13 PVF filma polymer film consisting of polyvinylfluoride used on the outer surface of meta
24、l jacketing to providecorrosion resistance and higher emittance than bare metal.3.2.14 safety edgean edge of metal jacketing that has beende-burred or rounded by a rolling operation.3.2.15 safety hema rounded edge of metal jacketing cre-ated by folding the edge of sheet jacketing completely backupon
25、 itself using a roll former or a brake.3.2.15.1 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.3.2.16 splice rollmetal jacketing sold in roll form wherethe package contains two sep
26、arate pieces of metal jacketingrolled approximately end to end.3.2.16.1 DiscussionA splice roll occurs when the metalcoil being used to form the roll jacketing reaches its end beforethe required roll length is obtained.3.2.17 split rollsynonymous with splice roll.4. Significance and Use4.1 This spec
27、ification 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 appropriate aluminum jacketing.5. Classification5.1 Cla
28、ssification of aluminum 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, 0.5,5.1.1.4 Type IV = Plastic film coated surface, 0.85,
29、 and5.1.1.5 Type V = Painted with a PVdF based paint system,0.8.5.1.1.6 PVF film is one kind of plastic film used in Type IV.5.1.1.7 Paint systems for Types II and III must be factoryapplied and baked on.5.1.1.8 Plastic film for Type IV must be factory applied andheat laminated to the surface.5.1.2
30、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 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
31、3004 (alloy 3004 clad bothsides with alloy 7072 for improved corrosion resistance), and5.1.2.6 Grade 6 = Alloy 5052.5.1.3 Moisture 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.NOT
32、E 2Class B was removed in 2011 because it was not used orproduced. The remaining Classes were not renumbered 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 lamin
33、ation of several components. The materialsare supplied in the form of rolls or sheets or preformed to fit theC1729M 16a2surface 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 s
34、hall havea finish that is smooth, 4.8 mm corrugated, or stucco embossed.The dimensions of corrugations (pitch and depth) must beagreed to by manufacturer and purchaser to achieveinterchangeability, constant rigidity, and appearance.6.3 When agreed upon by purchaser and seller, aluminumsheets used as
35、 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 jacketing 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 corr
36、ugated.6.4 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 thejacketing.6.5 Polyfilm (Class A) and polykraft (Class C) must befactory applied and heat laminated to the int
37、erior surface of themetal jacketing.6.6 For highly corrosive ambient conditions or to increaseemittance, the purchaser shall specify that the outer surface ofthe aluminum be coated with a pigmented paint (Type II),unpigmented paint (Type III), a plastic film (Type IV), or witha PVdF based paint syst
38、em (Type V).6.7 Pigmented paint (Type II), unpigmented paint (TypeIII), and PVdF based paint systems (Type V) must be factoryapplied and baked on to the outer surface.6.8 Unless agreed to otherwise by purchaser and seller ofthe metal jacketing, the primer layer for Type V outer surfacetreatment must
39、 have a minimum dry thickness of 5 microns andthe PVdF topcoat must have a minimum dry thickness of 18microns.NOTE 3It is important to be aware that the minimum 18 micronthickness requirement in Table 1 applies to the topcoat of the Type VPVdF based paint system and not to the total outer surface pa
40、int thickness.6.9 Plastic film (Type IV), including PVF film, must befactory applied to the metal jacketing outer surface using heatlamination with a thermally activated adhesive.6.10 Plastic film (Type IV), including PVF film, must be aminimum of 38 microns thick.6.11 The aluminum used in this jack
41、eting, with the excep-tion of 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 per5.1.2.6.12 Aluminum jacketing shall be specified by the thicknessof the aluminum layer which sh
42、all be in the range from 0.4 to1.3 mm.NOTE 4The thickness values mentioned in 6.12, 6.13, 6.14, and 6.15are nominal thickness. The tolerances shown in Table 2 apply to theselisted nominal values.6.13 The measured thickness of metal jacketing will beinfluenced by any forming or rolling such as that d
43、escribed in10.5.All requirements for and discussion of jacketing thicknessand thickness tolerance in this document including Table 2 andTable 3 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 d
44、escribed in 5.1.3.TABLE 1 Physical PropertiesType I II or V 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 0.85SurfaceBurning(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
45、/50 25/50 25/50 25/50 25/50Moistureretarderpinholedectections#5 #5 #5 n.a. #5 #5 #5 n.a. #5 #5 #5 n.a. #5 #5 #5 n.a.MoistureretarderWVTR(g/m2/day)#1.55 #17 n.a. n.a. #1.55 #17 n.a. n.a. #1.55 #17 n.a. n.a. #1.55 #17 n.a. n.a.Outer PaintThickness(microns)n.a. n.a. n.a. n.a. 1820 1820 1820 1820 810 81
46、0 810 810 n.a. n.a. n.a. n.a.Outer PaintPencilHardness(min)n.a. n.a. n.a n.a. H H H H H H H H n.a n.a n.a. n.a.C1729M 16a36.14 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(Gr
47、ade 6) per Section 5.1.2 and shall be 0.8 mm, 1.0 mm, 1.2mm, or 1.3 mm thick.NOTE 5Typical box rib widths 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
48、typically 25 mm.6.15 Deep corrugated aluminum jacketing pieces shall be0.4 mm, 0.5 mm, 0.6 mm, 0.8 mm, 1.0 mm, and 1.2 mm thick.6.15.1 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 c
49、enters with a 16 mm height. For specific repeating patterndistances, the manufacturer shall be consulted.7. Physical Properties7.1 Required physical properties are shown in Table 3 andTable 1.NOTE 6See section 10.9 for further information regarding Table 3.7.2 All aluminum jacketing shall demonstrate a flamespread of 25 or less and smoke developed of 50 or less whentesting the outer side (the side opposite that contacting theinsulation) in accordance with 11.2.NOTE 7Aluminum jacketing is not typically considered a fire resistan
