1、Designation: C1729 16aStandard 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 par
2、entheses 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 bo
3、th 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. No other units of measurement are included in thisstandard.NOTE 1A version of this specification in SI units is available asC1729M.1.5 This standard does not purport to address all of thesafety c
6、oncerns, 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 Aluminum and
7、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 LaggingC585 Practi
8、ce 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 for Selecting
9、Jacketing Materials for ThermalInsulationC1729M Specification for Aluminum Jacketing for Insula-tionC1785 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 of
10、Building 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 apply toterms u
11、sed 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.3.2.2.1 Discussi
12、onThe three terms “jacketing,” “lagging,”and “cladding” are considered synonymous in most metal1This specification is under the jurisdiction of ASTM Committee C16 onThermal Insulation and is the direct responsibility of Subcommittee C16.40 onInsulation Systems.Current edition approved Sept. 1, 2016.
13、 Published September 2016. Originallyapproved in 2010. Last previous edition approved in 2016 as C1729 16. DOI:10.1520/C1729-16A.2The boldface numbers in parentheses refer to a list of references at the end ofthis standard.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orconta
14、ct 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, New York, NY 10036, http:/www.ansi.org.Copyright A
15、STM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1jacket 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 specif
16、ically 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.3.2.4 cross crimp
17、edsynonymous with316 in. 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 portions of the
18、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 geographies. How
19、ever, 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 inner side of m
20、etaljacketing 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 perform the samefunc
21、tion.3.2.10 polykrafta multilayer composite film used as amoisture retarder on metal jacketing consisting of at least onelayer of minimum 40 lb kraft paper and one or more layers ofplastic film, usually polyethylene at a minimum thickness of1.5 mils.3.2.11 polyfilmin relation to metal jacketing, a t
22、hree-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 corrosionresistance
23、 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 metal jacketing to pro
24、videcorrosion 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 itself using a ro
25、ll 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 separate pieces of me
26、tal 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 specification is used
27、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 alu
28、minum 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, and5.1.1.5 Type V
29、 = 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 Alloy and Temper p
30、er 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 3004 (alloy 3004 cl
31、ad 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, 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 2Class B was removed i
32、n 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 lamination of several compone
33、nts. The materialsare supplied in the form of rolls or sheets or preformed to fit theC1729 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 shall havea finish that is
34、 smooth,316 in. 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 pipe insulation jacketin
35、g (see 8.2) shall have asafety edge or a38 to12 in. 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.Asafety hem shall not be specified when the finish is316in. corrugated.6.4 In most cases,
36、 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 interior surface of themetal
37、 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 system (Type V).6.7 Pigmented
38、 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 have a minimum dry thick
39、ness of 0.2 mils andthe PVdF topcoat must have a minimum dry thickness of 0.7mils.NOTE 3It is important to be aware that the minimum 0.7 mil thicknessrequirement in Table 1 applies to the topcoat of the Type V PVdF basedpaint system and not to the total outer surface paint thickness.6.9 Plastic film
40、 (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 1.5 mils thick.6.11 The aluminum used in this jacketing, with the excep-tion of bo
41、x rib, shall be manufactured from Specification ,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 shall be in the range from 0.016to 0.0
42、50 in.NOTE 4The thickness values mentioned in 6.11, 6.13, and 6.12 arenominal thickness. The tolerances shown in Table 2 apply to these listednominal values.6.13 The measured thickness of metal jacketing will beinfluenced by any forming or rolling such as that described in10.5.All requirements for a
43、nd discussion of jacketing thicknessand thickness tolerance in this document including Table 3 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 described in 5.1.3.TABLE 1 Physical Pro
44、pertiesType I II and 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 25/50 25/50 25/50 25/50 25/50Moisturere
45、tarderpinholedectections(per 50 ft2)#5 #5 #5 n.a. #5 #5 #5 n.a. #5 #5 #5 n.a. #5 #5 #5 n.a.MoistureretarderWVTR(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 PaintThickness(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 0
46、.3-0.4 0.3-0.4 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.C1729 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 505
47、2(Grade 6) per Section 5.1.2 and shall be 0.032 in., 0.040 in.,0.048 in., or 0.050 in. thick.NOTE 5Typical box rib widths available are 45-58 in., 38.5 in., and27.5 in. Typical lengths available are 8, 10, and 12 ft. The pattern ofgrooves and ridges typically repeats on 4 in. centers and the height
48、of eachrib is typically 1 in.6.15 Deep corrugated aluminum jacketing pieces shall be0.016 in., 0 .020 in., 0.024 in., 0.032 in., 0.040 in., or 0.048 in.thick.6.15.1 Typical deep corrugated width is 33 in. and typicallength is 6 to 12 ft. Two nominal repeating patterns arecommon 1-14 in. on centers w
49、ith a14 in. height and a 2-12 in.on centers with a58 in. 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
