1、Designation: C1729 13aC1729 14Standard 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 numbe
2、r 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 aluminum jacketing for thermal and acoustical insulation operating at either above or belowambient temperatures an
3、d in both indoor and outdoor locations. It does not cover insulation jacketing made from other materialssuch as mastics, fiber reinforced plastic, PVC, or stainless steel nor does it cover the details of thermal or acoustical insulationsystems.1.2 This specification provides physical requirements fo
4、r aluminum jacketing for thermal and acoustical insulation. GuideC1423 provides guidance in selecting jacketing materials and their safe use.1.3 This is a material specification and does not imply any performance of the installed system using the materials specifiedherein. For information about inst
5、allation of aluminum jacketing, see (1).21.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered No other units of measurement are includedin this s
6、tandard.NOTE 1A version of this specification in SI units is available as C1729M.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and de
7、termine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:3B209 Specification for Aluminum and Aluminum-Alloy Sheet and PlateC168 Terminology Relating to Thermal InsulationC450 Practice for Fabrication of Thermal Insulating Fitting Covers for NPS Pipin
8、g, and Vessel LaggingC585 Practice for Inner and Outer Diameters of Thermal Insulation for Nominal Sizes of Pipe and TubingC835 Test Method for Total Hemispherical Emittance of Surfaces up to 1400CC1371 Test Method for Determination of Emittance of Materials Near Room Temperature Using Portable Emis
9、sometersC1423 Guide for Selecting Jacketing Materials for Thermal InsulationC1729M Specification for Aluminum Jacketing for InsulationC1785 Test Method for Concentration of Pinhole Detections in Moisture Barriers on Metal JacketingD3363 Test Method for Film Hardness by Pencil TestE84 Test Method for
10、 Surface Burning Characteristics of Building MaterialsF1249 Test Method for Water Vapor Transmission Rate Through Plastic Film and Sheeting Using a Modulated Infrared Sensor2.2 ANSI Standard:4ANSI H35.2/H35.2(M) Dimensional Tolerances for Aluminum Mill Products1 This specification is under the juris
11、diction of ASTM Committee C16 on Thermal Insulation and is the direct responsibility of Subcommittee C16.40 on InsulationSystems.Current edition approved Sept. 1, 2013April 1, 2014. Published October 2013April 2014. Originally approved in 2010. Last previous edition approved in 2013 asC172913.13a. D
12、OI: 10.1520/C172913A.10.1520/C172914.2 The boldface numbers in parentheses refer to a list of references at the end of this standard.3 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume inform
13、ation, refer to the standards Document Summary page on the ASTM website.4 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard
14、an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is
15、to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13. Terminology3.1 DefinitionsDefinitions in Terminology C168 apply to terms used in this specification.3.2 Definitions of Terms Specific to This St
16、andard:3.2.1 box ribaluminum sheet formed to have alternating parallel grooves and ridges with a cross section approximating asquare wave3.2.2 cladding (as related to insulation jacketing)synonymous with jacketing3.2.2.1 DiscussionThe three terms “jacketing”, “lagging”, and “cladding” are considered
17、 synonymous in most metal jacket related applications andgeographies. However, in some cases in the power industry in North America the term “lagging” has a different meaning than“jacketing” or “cladding” and refers specifically to a heavier gauge of jacketing.3.2.3 crevice corrosionLocalized corros
18、ion of metal jacketing surface at, or immediately adjacent to, an area that is shieldedfrom full exposure to the environment because of close proximity between the metal and the surface of another material.3.2.4 cross crimpedsynonymous with 316 in. corrugated3.2.5 deep corrugatedaluminum sheet forme
19、d to have alternating 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 of similaroverlapping pieces3.2.8 lagging
20、(as related to insulation jacketing)synonymous with jacketing3.2.8.1 DiscussionThe three terms “jacketing”, “lagging”, and “cladding” are considered synonymous in most metal jacket related applications andgeographies. However, in some cases in the power industry in North America the term “lagging” h
21、as a different meaning than“jacketing” or “cladding” and refers specifically to a heavier gauge of jacketing.3.2.9 moisture retarder (moister barrier)a layer of plastic film or other material applied to the inner side of metal jacketingto inhibit jacket corrosion by interfering with the formation of
22、 a galvanic cell between the dissimilar metals of the pipe and jacketor by preventing crevice corrosion3.2.9.1 DiscussionA moisture retarder is not an insulation system water vapor retarder and does not perform the same function.3.2.10 polykrafta multilayer composite film used as a moisture retarder
23、 on metal jacketing consisting of at least one layerof minimum 40 lb kraft paper and one or more layers of plastic film, usually polyethylene at a minimum thickness of 1.5 mils.3.2.11 polysurlyna multilayer film used as a moisture retarder on metal jacketing consisting of at least one layer ofethyle
24、ne/methacrylic acid copolymer and one or more layers of other polymers, usually polyethylene.3.2.12 safety edgean edge of metal jacketing that has been de-burred or rounded by a rolling operation3.2.13 safety hema rounded edge of metal jacketing created by folding the edge of sheet jacketing complet
25、ely back upon itselfusing a roll former or a brake.3.2.13.1 DiscussionThe fold is typically made toward the underside of the jacketing so that the original edge is hidden and the external appearanceof the jacketing is preserved.3.2.14 splice rollmetal jacketing sold in roll form where the package co
26、ntains two separate pieces of metal jacketing rolledapproximately end to end.3.2.14.1 DiscussionA splice roll occurs when the metal coil being used to form the roll jacketing reaches its end before the required roll length isobtained.C1729 1423.2.15 split rollsynonymous with splice roll.4. Significa
27、nce and Use4.1 This specification is used to specify material by physical property requirements that address the prerequisites in Sections6 to 10. The designer of an insulation system, after determining the system requirements, shall use this specification to specify theappropriate aluminum jacketin
28、g.5. Classification5.1 Classification of aluminum jacketing is based on three factors: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
29、 = Plastic film coated surface, = 0.85.5.1.1.5 Paint systems for Types II and III must be factory applied and baked on.5.1.1.6 Plastic film for Type IV must be factory applied and heat laminated to the surface.5.1.2 Alloy and Temper per Specification B209:5.1.2.1 Grade 1 = Alloy 3105 or 3003, half h
30、ard 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 3004,5.1.2.5 Grade 5 = Alloy Alclad 3004 (alloy 3004 clad both sides with alloy 7072 for improved corrosion resistance), and5
31、.1.2.6 Grade 6 = Alloy 5052.5.1.3 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 Class E = no moisture retarder.NOTE 2Class B was removed in 2011 because it was not used or produced. The remaining Class
32、es were not renumbered to avoid conflicts withengineering specifications that reference the remaining Classes.6. Materials and Manufacture6.1 Aluminum jacketing materials are composed of a single material or a lamination of several components. The materials aresupplied in the form of rolls or sheets
33、 or preformed to fit the surface to which they are to be applied. The materials are appliedin the field or as a factory-applied composite with the insulation.6.2 The primary material shall be aluminum and shall have a finish that is smooth, 316 in. corrugated, or stucco embossed. Thedimensions of co
34、rrugations (pitch and depth) must be agreed to by manufacturer and purchaser to achieve interchangeability,constant rigidity, and appearance.6.3 When agreed upon by purchaser and seller, aluminum sheets used as pipe insulation jacketing (see 8.2) shall have a safetyedge or a 38 to 12 in. (9.5 to 12.
35、7 mm) safety hem along one entire width edge of the sheet.Aluminum jacketing with a safety edgeor safety hem must still meet the length dimensions specified in 8.2.1. A safety hem shall not be specified when the finish is 316in. corrugated.6.4 In most cases, the inner surface of aluminum jacketing m
36、aterial is coated or covered with a moisture resistant film to retardpossible galvanic or chemical corrosion, or both, of the jacketing.6.5 For highly corrosive ambient conditions or to increase emittance, the purchaser shall specify that the outer surface of thealuminum be coated with a pigmented o
37、r unpigmented paint or with a plastic film.6.6 The aluminum used in this jacketing, with the exception of box rib, shall be manufactured from Specification , alloys 3003,3105, or 1100 with tempers of H14 (half hard), H12 (quarter hard), or dead soft Grades 1, 2, or 3 per 5.1.2.6.7 Aluminum jacketing
38、 shall be specified by the thickness of the aluminum layer which shall be in the range from 0.016 to0.050 in. (0.41 to 1.27 mm).NOTE 3The thickness values mentioned in 6.6, 6.8, and 6.7 are nominal thickness. The tolerances shown in Table 1 apply to these listed nominalvalues.6.8 The measured thickn
39、ess of metal jacketing will be influenced by any forming or rolling such as that described in 10.5. Allrequirements for and discussion of jacketing thickness and thickness tolerance in this document including Table 2 and Table 1apply to the base metal before any forming or rolling and do not include
40、 any coatings or films that are applied to the surface suchas the moisture barriers described in 5.1.3.C1729 1436.9 Box rib aluminum jacketing pieces shall be manufactured from Specification B209, alloys 3003 or 3105 (Grade 1), alloys3004 or Alclad 3004 (Grades 4 and 5), or alloy 5052 (Grade 6) per
41、Section 5.1.2 and shall be 0.032 in. (0.8 mm), 0.040 in. (1.0mm), 0.048 in. (1.2 mm), or 0.050 in (1.3 mm) in., 0.040 in., 0.048 in., or 0.050 in. thick.NOTE 4Typical box rib widths available are 45-58 in. (1159 mm), 38.5 in. (978 mm), in., 38.5 in., and 27.5 in. (699 mm). Typical lengths availablea
42、re 8, 10, and 12 ft (2.4, 3.0, and 3.7 m). ft. The pattern of grooves and ridges typically repeats on 4 in. (102 mm) centers and the height of each rib istypically 1 in. (25 mm).6.10 Deep corrugated aluminum jacketing pieces shall be 0.016 in. (0.4 mm), in., 0 .020 in. (0.5 mm), 0.024 in. (0.6 mm),
43、0.032in. (0.8 mm), 0.040 in. (1.0 mm), in., 0.024 in., 0.032 in., 0.040 in., or 0.048 in. (1.2 mm) thick.6.10.1 Typical deep corrugated width is 33 in. (838 mm) and typical length is 6 to 12 ft (1.8 to 3.7 m). ft. Two nominal repeatingpatterns are common 1-14 in. (32 mm) on centers with a 14 in. (6
44、mm) height and a 2-12 in. (64 mm) on centers with a 58 in.(16 mm) height. For specific repeating pattern distances, the manufacturer shall be consulted.7. Physical Properties7.1 Required physical properties are shown in Table 2 and Table 3.NOTE 5See section 10.9 for further information regarding Tab
45、le 2.7.2 All aluminum jacketing shall demonstrate a flame spread of 25 or less and smoke developed of 50 or less when testing theouter side (the side opposite that contacting the insulation) in accordance with 11.2.NOTE 6Aluminum jacketing is not typically considered a fire resistant material. If a
46、higher level of fire resistance or protection is required, alternativejacketing materials usually based on steel, should be considered.7.3 Unless otherwise specified by the manufacturer, the emittance of the jacketing shall be considered to be:7.3.1 Type I = 0.1 which is typical for a normally oxidi
47、zed aluminum jacket in service,7.3.2 Type II = 0.8 which is typical for a pigmented paint,TABLE 1 Permissible Thickness TolerancesNominal thickness inin.(mm)Thickness tolerance in in. (mm) forNominal thickness inin.Thickness tolerance in in. forUp to 39.4 in. (1 m) wide jacketingand deep corrugated
48、sheet48 in. (1.22 m) wide jacketingand box rib sheetUp to 39.4 in. wide jacketingand deep corrugated sheet48 in. wide jacketingand box rib sheetover 0.010 through 0.016(over 0.254 through 0.406) 0.0010 (0.0254) 0.0015 (0.0381)over 0.010 through 0.016 0.0010 0.0015over 0.016 through 0.025(over 0.406
49、through 0.635) 0.0015 (0.0381) 0.0020 (0.0508)over 0.016 through 0.025 0.0015 0.0020over 0.025 through 0.032(over 0.635 through 0.813) 0.0020 (0.0508) 0.0025 (0.0635)over 0.025 through 0.032 0.0020 0.0025over 0.032 through 0.039(over 0.813 through 0.991) 0.0020 (0.0508) 0.0030 (0.0762)over 0.032 through 0.039 0.0020 0.0030over 0.039 through 0.047(over 0.991 through 1.194) 0.0025 (0.0635) 0.0035 (0.0889)over 0.039 through 0.047 0.0025 0.0035over 0.047 through 0.063(over 1.194 through 1.600) 0.0030 (0.0762
