ASTM C1729M-2014 Standard Specification for Aluminum Jacketing for Insulation《绝缘铝护套的标准规格》.pdf

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1、Designation: C1729M 13C1729M 14Standard 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 num

2、ber 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

3、and 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

4、for 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 in

5、stallation of aluminum jacketing, see (1).21.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.NOTE 1A version of this specification in inch-pound units is available as Specification C1729.1.5 This standard does not purport to

6、 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 determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:3B209 Specif

7、ication for Aluminum and Aluminum-Alloy Sheet and PlateC168 Terminology Relating to Thermal InsulationC450 Practice for Fabrication of Thermal Insulating Fitting Covers for NPS Piping, and Vessel LaggingC585 Practice for Inner and Outer Diameters of Thermal Insulation for Nominal Sizes of Pipe and T

8、ubingC835 Test Method for Total Hemispherical Emittance of Surfaces up to 1400CC1371 Test Method for Determination of Emittance of Materials Near Room Temperature Using Portable EmissometersC1423 Guide for Selecting Jacketing Materials for Thermal InsulationC1729 Specification for Aluminum Jacketing

9、 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 Surface Burning Characteristics of Building MaterialsF1249 Test Method for Water Vapor Transmission Rate Through Plast

10、ic Film and Sheeting Using a Modulated Infrared Sensor2.2 ANSI Standard:4ANSI H35.2/H35.2(M) Dimensional Tolerances for Aluminum Mill Products3. Terminology3.1 DefinitionsDefinitions in Terminology C168 apply to terms used in this specification.3.2 Definitions of Terms Specific to This Standard:1 Th

11、is specification is under the jurisdiction of ASTM Committee C16 on Thermal Insulation and is the direct responsibility of Subcommittee C16.40 on InsulationSystems.Current edition approved Oct. 15, 2013April 1, 2014. Published November 2013April 2014. Originally approved in 2013. Last previous editi

12、on approved in 2013 asC1729M13. DOI: 10.1520/C1729M13.10.1520/C1729M14.2 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 B

13、ook of ASTM Standardsvolume information, 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 pro

14、vide the user of an ASTM standard 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

15、 standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.2.1 box ribaluminum sheet formed to have alternating parallel grooves and ridges with a cross section approxima

16、ting 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 synonymous in most metal jacket related applications andgeographies. However, in some cases in the power industry in No

17、rth 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 corrosion of metal jacketing surface at, or immediately adjacent to, an area that is shieldedfrom full exposure to the environ

18、ment because of close proximity between the metal and the surface of another material.3.2.4 cross crimpedsynonymous with 4.8 mm corrugated3.2.5 deep corrugatedaluminum sheet formed to have alternating parallel grooves and ridges with a cross sectionapproximating a sine wave3.2.6 finishthe texture of

19、 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 (as related to insulation jacketing)synonymous with jacketing3.2.8.1 DiscussionThe three terms “jacketing”, “lagging”, an

20、d “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” has a different meaning than“jacketing” or “cladding” and refers specifically to a heavier gauge of jacketing.3.2.9 moistu

21、re 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 a galvanic cell between the dissimilar metals of the pipe and jacketor by preventing crevice corrosion3.2.9.1 Discussion

22、A 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 on metal jacketing consisting of at least one layerof minimum 65 g/m2 kraft paper and one or more layers of plastic film

23、, usually polyethylene at a minimum thickness of 38 microns.3.2.11 polysurlyna multilayer film used as a moisture retarder on metal jacketing consisting of at least one layer ofethylene/methacrylic acid copolymer and one or more layers of other polymers, usually polyethylene.3.2.12 safety edgean edg

24、e 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 completely back upon itselfusing a roll former or a brake.3.2.13.1 DiscussionThe fold is typically made toward the underside

25、 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 contains two separate pieces of metal jacketing rolledapproximately end to end.3.2.14.1 DiscussionA splice roll occurs

26、when the metal coil being used to form the roll jacketing reaches its end before the required roll length isobtained.3.2.15 split rollsynonymous with splice roll.C1729M 1424. Significance and Use4.1 This specification is used to specify material by physical property requirements that address the pre

27、requisites in Sections6 to 10. The designer of an insulation system, after determining the system requirements, shall use this specification to specify theappropriate aluminum jacketing.5. Classification5.1 Classification of aluminum jacketing is based on three factors:5.1.1 Outer surface treatment

28、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, = 0.85.5.1.1.5 Paint systems for Types II and III must be factory applied and baked

29、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 hard temper (H14,)5.1.2.2 Grade 2 = Alloy 3105 or 3003, quarter hard temper (H12 - lock forming quality),5.1.2.3 Grad

30、e 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), and5.1.2.6 Grade 6 = Alloy 5052.5.1.3 Moisture Retarder:5.1.3.1 Class A = polysurlyn, 76 microns thick,5.1.3.2 Class C =

31、 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 Classes were not renumbered to avoid conflicts withengineering specifications that reference the remaining Classes.6

32、. 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 or preformed to fit the surface to which they are to be applied. The materials are appliedin the field or as a

33、 factory-applied composite with the insulation.6.2 The primary material shall be aluminum and shall have a finish that is smooth, 4.8 mm corrugated, or stucco embossed. Thedimensions of corrugations (pitch and depth) must be agreed to by manufacturer and purchaser to achieve interchangeability,const

34、ant 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 10 15 mm safety hem along one entire width edge of the sheet. Aluminum jacketing with a safety edge or safety hemmust still meet the len

35、gth dimensions specified in 8.2.1.Asafety hem shall not be specified when the finish is 4.8 mm. corrugated.6.4 In most cases, the inner surface of aluminum jacketing material is coated or covered with a moisture resistant film to retardpossible galvanic or chemical corrosion, or both, of the jacketi

36、ng.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 or unpigmented paint or with a plastic film.6.6 The aluminum used in this jacketing, with the exception of box rib, shall be manufactu

37、red from Specification B209, alloys3003, 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 shall be specified by the thickness of the aluminum layer which shall be in the range from 0.4 to 1.3mm.NOTE 3The thickness valu

38、es mentioned in 6.7, 6.8, 6.9, and 6.10 are nominal thickness. The tolerances shown in Table 1 apply to these listed nominalvalues.6.8 The measured thickness of metal jacketing will be influenced by any forming or rolling such as that described in 10.5. Allrequirements for and discussion of jacketin

39、g thickness and thickness tolerance in this document including Table 1 and Table 2apply to the base metal before any forming or rolling and do not include any coatings or films that are applied to the surface suchas the moisture barriers described in 5.1.3.C1729M 1436.9 Box rib aluminum jacketing pi

40、eces 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 Section 5.1.2 and shall be 0.8 mm, 1.0 mm, 1.2 mm, or 1.3mm thick.NOTE 4Typical box rib widths available are 1159 mm, 978 mm, and 699 mm. Typical

41、 lengths available are 2.44, 3.05, and 3.66 m. The pattern ofgrooves and ridges typically repeats on 102 mm centers and the height of each rib is typically 25 mm.6.10 Deep corrugated aluminum jacketing pieces shall be 0.4 mm, 0.5 mm, 0.6 mm, 0.8 mm, 1.0 mm, and 1.2 mm thick.6.10.1 Typical deep corru

42、gated width is 838 mm and typical length is 1.81 to 3.66 m. Two nominal repeating patterns arecommon 32 mm on centers with a 6 mm height and a 64 mm on centers with a 16 mm height. For specific repeating patterndistances, the manufacturer shall be consulted.7. Physical Properties7.1 Required physica

43、l properties are shown in Table 2 and Table 3.NOTE 5See section 10.9 for further information regarding Table 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

44、accordance with 11.2.NOTE 6Aluminum jacketing is not typically considered a fire resistant material. If a 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 emi

45、ttance of the jacketing shall be considered to be:7.3.1 Type I = 0.1 which is typical for a normally oxidized aluminum 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 unpigmented paint, and7.3.4 Type IV = 0.85 which is typical

46、of a plastic film surface.NOTE 7Testing of the emittance of Type I has yielded initial unoxidized values ranging from 0.03 to 0.05 and oxidized “in-service” values rangingfrom 0.1 to 0.31 (2, 3, 4, 5, 6). The use of an emittance of 0.1 is recommended here as being the most conservative value. 7.3 ad

47、dresses the situationwhere a user of this standard wishes to consider a different emittance value.7.4 Permissible thickness tolerances vary with nominal thickness and are shown in Table 1. Thickness is measured per 11.3.7.5 Requirements for permissible pinholes pinhole detections in the moisture ret

48、arder when tested per 11.4Test Method C1785are shown in Table 3.7.6 The moisture retarder shall have no visual defect that will affect performance and shall be free of laminated separations,holes, rips, tears, scratches, dents, non-uniform edges, or creases.7.7 Requirements for water vapor transmiss

49、ion rate (WVTR) of the moisture retarders tested per 11.6 are shown in Table 3.Testing the WVTR of moisture retarders is not possible after they are applied to the aluminum jacketing so this testing shall bedone on the moisture retarders prior to application.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 through 0.64 0.038 0.051over 0.64 through 0.8 0.051 0.064over 0.