1、Designation: B 882 05Standard Specification forPre-Patinated Copper for Architectural Applications1This standard is issued under the fixed designation B 882; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision
2、. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers the establishment of the re-quirements for pre-patinated (artificially aged) copper sheetand strip in o
3、unce-weight thicknesses supplied in flat lengthsfor roofing, flashing, and other architectural applications.1.2 The pre-patinated surface is the result of chemicalreaction with the copper and shall be applied on one side of theproduct.1.2.1 The pre-patinated surface formed is comparable incolor and
4、ability to be bent or formed to the surface formed innaturally occurring patinated copper.1.3 The pre-patinated surface is not the result of coatingapplications such as painting.1.4 Materials made to this specification are not intended tobe used for electrical applications.1.5 The values stated in i
5、nch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.NOTE 1A companion specification for copper sheet and strip forbuilding construction is Specification B 370.1.6
6、The following precautionary statement pertains only tothe test method portion, Section 12, of this specification: Thisstandard does not purport to address all of the safety concerns,if any, associated with its use. It is the responsibility of the userof this standard to establish appropriate safety
7、and healthpractices and determine the applicability of regulatory limita-tions prior to use.2. Referenced Documents2.1 ASTM Standards:2B 248 Specification for General Requirements for WroughtCopper and Copper-Alloy Plate, Sheet, Strip, and RolledBarB 370 Specification for Copper Sheet and Strip for
8、BuildingConstructionB 571 Practice for Qualitative Adhesion Testing of MetallicCoatingsB 601 Classification for Temper Designations for Copperand Copper AlloysWrought and CastB 846 Terminology for Copper and Copper AlloysE8 Test Methods for Tension Testing of Metallic MaterialsE 478 Test Methods for
9、 Chemical Analysis of CopperAlloysG23 Practice for Operating Light-Exposure Apparatus(Carbon-Arc Type) With and Without Water for Exposureof Nonmetallic Materials33. Terminology3.1 Definitions:3.1.1 For definitions of terms related to copper and copperalloys, refer to Terminology B 846.3.2 Definitio
10、ns of Terms Specific to This Standard:3.2.1 pre-patinated coppercopper that has been artifi-cially aged under controlled and monitored conditions toproduce a protective surface that is within the range of colorsfrom green to turquoise.4. Ordering Information4.1 Orders for product produced to this sp
11、ecification shouldinclude the following information:4.1.1 ASTM designation and year of issue,4.1.2 Ounce weight thickness of the base copper sheet (seeTable 1),4.1.3 Temper (see Table 2),4.1.4 DimensionsWidth and length of sheets, and4.1.5 QuantityTotal weight or number of sheets of eachsize.4.2 The
12、 following requirements are optional and shall beincluded in the purchase order or contract when required:4.2.1 Certification,4.2.2 Mill test reports, or1This specification is under the jurisdiction ofASTM Committee B05 on Copperand CopperAlloys and is the direct responsibility of Subcommittee B05.0
13、1 on Plate,Sheet, and Strip.Current edition approved Oct. 1, 2005. Published October 2005. Originallyapproved in 1997. Last previous edition approved in 2000 as B 882 00.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annu
14、al Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Withdrawn.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States
15、.4.2.3 Supplementary requirements for agencies of the U.S.government as given in Specification B 248, or both.5. General Requirements5.1 The following sections of Specification B 248 constitutea part of this specification:5.1.1 Sampling,5.1.2 Number of tests and retests,5.1.3 Specimen preparation,5.
16、1.4 Test methods,5.1.5 Significance of numerical limits,5.1.6 Inspection,5.1.7 Rejection and rehearing,5.1.8 Certification,5.1.9 Test reports,5.1.10 Packaging and package markings, and5.1.11 Supplementary requirements.5.2 In addition, when a section with a title identical to thatreferenced in 5.1 ap
17、pears in this specification, it containsadditional requirements that supplement those appearing inSpecification B 248.6. Materials and Manufacture6.1 MaterialsThe base or starting material shall be coppersheet or strip manufactured by any process that provides aproduct that conforms to the requireme
18、nts of SpecificationB 370.6.2 Manufacture:6.2.1 The pre-patinated surface shall be the result of chemi-cal treatment that artificially ages the base metal, undercontrolled conditions, to form the green- to turquoise-coloredprotective layer.6.2.2 The untreated side of the copper sheet is permitted to
19、have a dull appearance. Stains or discolorations are permittedas long as they do not interfere with the function of the product.7. Chemical Composition7.1 The copper sheet shall have a minimum copper contentof 99.5 % (including silver) as prescribed in SpecificationB 370.7.1.1 Any copper that compli
20、es with 7.1 shall be acceptable.7.2 When limits for unnamed elements are required, thoselimits shall be established, and the concentration of suchelements determined by agreement between the manufacturerand the purchaser.7.3 The artificial patina is composed of metallic salts whichare also found in
21、naturally occurring patinas.8. Temper8.1 The nonpatinated base copper sheet, referred to in 6.1 ofthis specification, is commercially available in the followingtempers as defined by Classification B 601: H00 (eighth hard,cold-rolled), H01 (quarter hard, cold-rolled high yield), andH02 (half hard) te
22、mper.8.1.1 Unless otherwise specified, the product is normallysupplied in the H00 (eighth hard, cold-rolled) temper.9. Mechanical Properties9.1 Tensile Strength:9.1.1 The nonpatinated base copper sheet material shallconform to the requirements of Table 2, for the temperspecified in the purchase orde
23、r, when tested in accordance withTest Methods E8.9.1.2 The tension test results shall be the basis for purchaseracceptance or rejection based upon mechanical properties.9.2 Rockwell Hardness:9.2.1 Since Rockwell hardness tests offer a quick andconvenient method of checking the conformity of the prod
24、uctto the requirements of tensile strength, approximate Rockwellhardness values are given in Table 2 for general informationand assistance in testing.9.2.1.1 The hardness testing must be performed on a non-patinated surface, and the values obtained shall not be used asa basis for rejection.10. Dimen
25、sions, Mass, and Permissible Variations10.1 Thickness:10.1.1 The standard method of measuring the thickness ofthe nonpatinated base sheet shall be by ounce-weight.10.1.1.1 The corresponding theoretical thickness in inchesfor the standard ounce-weights is shown in Table 1.10.1.2 The minimum thickness
26、 permitted at any point on thenonpatinated base sheet shall be as specified in Table 1.10.1.2.1 The thickness of the patinated product shall not beless than the thickness of the base copper sheet.10.2 Weight Tolerances:10.2.1 Lot-weight tolerances of the nonpatinated startingmaterial, based on case-
27、weight lots of approximately 1000 lbs(455 kg), shall be as specified in Table 1.10.2.1.1 Other case-weight lot sizes are permitted whenagreed upon between the purchaser and supplier.10.2.1.2 Lot-weight tolerances of the patinated materialshall not increase the case weight lots of the nonpatinated me
28、talby more than 2 % or as agreed upon between the purchaser andmanufacturer.10.3 Width:10.3.1 The width tolerance for slit metal shall be as shownin Table 3.10.3.2 The width tolerances for square-sheared metal shallbe as shown in Table 4.10.4 Length:10.4.1 Specific and stock length tolerances shall
29、be asshown in Table 5.TABLE 1 Thickness and Weight Tolerances of Sheet and StripOunce-Weight/ft2TheoreticalThickness,Ain. (mm)Tolerances, Plus and Minus,in. (mm)6 0.0081 (0.206) 0.001 (0.026)8 0.0108 (0.274) 0.0011 (0.028)10 0.0135 (0.343) 0.0011 (0.028)12 0.0162 (0.411) 0.0012 (0.030)16 0.0216 (0.5
30、49) 0.0012 (0.031)20 0.0270 (0.686) 0.0012 (0.031)24 0.0323 (0.820) 0.0015 (0.038)32 0.0431 (1.09) 0.002 (0.05)48 0.0646 (1.64) 0.0025 (0.06)ABased on a density of 0.322 lb/in.3(8.91 g/cm3).B88205210.4.2 Square sheared metal length tolerances shall be asshown in Table 6.10.5 Straightness:10.5.1 The
31、straightness or edgewise curvature (depth of arc)tolerance measured in any 72-in. (1.8-m) portion of the totallength shall be as follows:10.5.1.1 For slit metalAs shown in Table 7 and10.5.1.2 For square-sheared metal as shown in Table 8.11. Workmanship, Finish and Appearance11.1 The pre-patinated co
32、pper surface shall be applied toonly one side of the product and shall have a green to turquoisecolor that is similar in texture and appearance to patina thattypically forms on copper when exposed to any form ofweather.11.1.1 The pre-patinated copper surface will not fade uponexposure to ultraviolet
33、 light; however, some color change isnormal upon exposure to weather for a brief period of time(few months).11.1.1.1 Any concern the purchaser may have as to colorfade must be discussed with the supplier, and any testing shallbe done in accordance with agreed upon conditions available inPractice G23
34、.11.1.2 The product can be bent, formed, or given edgingoperations as is considered normal in roofing, flashing, andother applications.11.1.2.1 Minor flaking of the pre-patinated surface in thevicinity of worked areas is permitted as the pre-patinatedsurface will self-heal over time where abraded or
35、 marred.11.1.2.2 Testing for the adhesiveness of the pre-patinatedcoating and its resistance to flaking shall be done in accordancewith the bend test section of Practice B 571.11.2 Acceptance or rejection based on color shall be bymutual agreement between producer and consumer.12. Test Methods12.1 T
36、he chemical composition of the base copper sheetshall, in case of disagreement, be determined by Test MethodsE 478.12.2 Color Fade ResistanceSee Practice G23.12.3 Resistance to FlakingSee Test section of PracticeB 571.13. Keywords13.1 architectural copper; building construction; flashing;pre-patinat
37、ed copper; roofing copperTABLE 2 Mechanical PropertiesTemper Designation Tensile Strength, ksi (MPa)Yield Strength, at0.5 % ExtensionUnder Load, min,ksi (MPa)Approximate Rockwell HardnessA(for Information Only)Standard Former min max F Scale Superficial 30H00 cold-rolled 32 (220) 40 (273) 20 (135) 5
38、4 to 82 15 to 49H01 cold-rolled, high yield 34 (235) 42 (290) 28 (190) 60 to 84 18 to 51H02 half hard 37 (255) 46 (315) 30 (205) 77 to 89 43 to 57ARockwell hardness values apply as follows: The F scale applies to only 32- and 48-oz-weight/ft2metal; the superficial 30T scale applies to lesser ounce-w
39、eight/ft2metal.TABLE 3 Width Tolerances for Slit MetalWidth, in. (mm)Width Tolerances, Plusand Minus, in. (mm)Up to 24 (610), incl164 (0.40)Over 24 to 36 (610 to 914), incl364 (1.2)TABLE 4 Width Tolerances for Square-Sheared MetalWidth, in. (mm)Width Tolerances, Plusand Minus, in. (mm)Up to 24 (610)
40、, incl132 (0.79)Over 24 to 36 (610 to 914), incl364 (1.2)Over 36 (914)116 (1.6)TABLE 5 Length Tolerances for Specific and Stock LengthsLength, in. (m)Length Tolerance (Applicable Only toFull-Length Pieces), in. (mm)Specific lengths 120 (3) and under14 (6.4) (all plus)TABLE 6 Length Tolerances for Sq
41、uare-Sheared MetalLength, in. (m)Length Tolerance Plus and Minus,in. (mm)Over 36 to 120 (0.9 to 3), incl116 (2)TABLE 7 Straightness Tolerances for Slit MetalNOTE 1Maximum edgewise curvature (depth of arc) in any 72-in.(1.83-m) portion of the total length.Width, in. (mm) Straightness Tolerance, in. (
42、mm)Over 4 to 24 (102 to 610), incl12 (13)TABLE 8 Straightness Tolerances for Square-Sheared MetalNOTE 1Maximum edgewise curvature (depth of arc) in any 72-in.(1.83-m) portion of the total length (not applicable to metal over 120 in.(3.05 m) in length).Straightness Tolerances, in. (mm)Up to 10 in. (2
43、54 mm)incl. in WidthOver 10 in. (254 mm)in WidthAll thicknesses116 (1.6)132 (0.79)B882053SUMMARY OF CHANGESCommittee B05 has identified the location of selected changes to this standard since the last issue (B 882 00)that may impact the use of this standard. (Approved Oct. 1, 2005.)(1) The minimum c
44、opper content was changed to 99.5 %(including copper) to match the changes in SpecificationB 370.(2) Subsection 1.3 was altered slightly to make the method ofmanufacture less restrictive.(3) Very minor editorial changes were made in accordancewith the B05 Outline of Form.(4) Table 1 was revised to a
45、dd plus side tolerances to matchthe minus tolerances; the Minimum Thickness column wasremoved.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determinat
46、ion of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withd
47、rawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your
48、 comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).B882054
