1、Designation: B882 10Standard Specification forPre-Patinated Copper for Architectural Applications1This standard is issued under the fixed designation B882; 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 () 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 ounc
3、e-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 abi
4、lity 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 inch
5、-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 B370.1.6 The
6、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 and
7、healthpractices and determine the applicability of regulatory limita-tions prior to use.2. Referenced Documents2.1 ASTM Standards:2B248 Specification for General Requirements for WroughtCopper and Copper-Alloy Plate, Sheet, Strip, and RolledBarB370 Specification for Copper Sheet and Strip for Buildi
8、ngConstructionB571 Practice for Qualitative Adhesion Testing of MetallicCoatingsB601 Classification for Temper Designations for Copperand Copper AlloysWrought and CastB846 Terminology for Copper and Copper AlloysE8 Test Methods for Tension Testing of Metallic MaterialsE478 Test Methods for ChemicalA
9、nalysis of CopperAlloysG2396 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 B846.3.2 Definitions of Term
10、s 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 specificatio
11、n 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 following
12、 requirements are optional and shall beincluded in the purchase order or contract when required:4.2.1 Certification, or1This specification is under the jurisdiction ofASTM Committee B05 on Copperand CopperAlloys and is the direct responsibility of Subcommittee B05.01 on Plate,Sheet, and Strip.Curren
13、t edition approved Oct. 1, 2010. Published November 2010. Originallyapproved in 1997. Last previous edition approved in 2005 as B882 05. DOI:10.1520/B0882-10.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of A
14、STMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Withdrawn. The last approved version of this historical standard is referencedon www.astm.org.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Ha
15、rbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.2.2 Mill test reports,4.2.3 Supplementary requirements for agencies of the U.S.government as given in Specification B248, or both.5. General Requirements5.1 The following sections of Specification B248 constitutea part of thi
16、s specification:5.1.1 Sampling,5.1.2 Number of tests and retests,5.1.3 Specimen preparation,5.1.4 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 r
17、equirements.5.2 In addition, when a section with a title identical to thatreferenced in 5.1 appears in this specification, it containsadditional requirements that supplement those appearing inSpecification B248.6. Materials and Manufacture6.1 MaterialsThe base or starting material shall be coppershe
18、et or strip manufactured by any process that provides aproduct that conforms to the requirements of SpecificationB370.6.2 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 tu
19、rquoise-coloredprotective layer.6.2.2 The untreated side of the copper sheet is permitted tohave 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 contento
20、f 99.5 % (including silver) as prescribed in SpecificationB370.7.1.1 Any copper that complies 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 th
21、e purchaser.7.3 The artificial patina is composed of metallic salts whichare also found in 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 B601: H00 (e
22、ighth hard,cold-rolled), H01 (quarter hard, cold-rolled high yield), andH02 (half hard) temper.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
23、 shallconform to the requirements of Table 2, for the temperspecified in the purchase order, 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 Rockwel
24、l hardness tests offer a quick andconvenient method of checking the conformity of the productto 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-pati
25、nated surface, and the values obtained shall not be used asa basis for rejection.10. Dimensions, 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 thicknes
26、s in inchesfor the standard ounce-weights is shown in Table 1.10.1.2 The minimum and maximum thickness permitted atany point on the nonpatinated base sheet shall be as specifiedin Table 1.10.1.2.1 The thickness of the patinated product shall not beless than the thickness of the base copper sheet.10.
27、2 Width:10.2.1 The width tolerance for slit metal shall be as shownin Table 3.10.2.2 The width tolerances for square-sheared metal shallbe as shown in Table 4.10.3 Length:10.3.1 Specific and stock length tolerances shall be asshown in Table 5.10.3.2 Square sheared metal length tolerances shall be as
28、shown in Table 6.10.4 Straightness:10.4.1 The straightness or edgewise curvature (depth of arc)tolerance measured in any 72-in. (1.8-m) portion of the totallength shall be as follows:10.4.1.1 For slit metalAs shown in Table 7 and10.4.1.2 For square-sheared metal as shown in Table 8.TABLE 1 Thickness
29、 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 (0.549) 0.0012 (0.031)20 0.0270 (0.686) 0.0
30、012 (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).B882 10211. Workmanship, Finish and Appearance11.1 The pre-patinated copper surface shall be applied toonly one side of the product and shall have a
31、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 light; however, some color change isnormal upon exposure to weather for a bri
32、ef 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 G2396.11.1.2 The product can be bent, formed, or given edgingoperations as is con
33、sidered 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 marred.11.1.2.2 Testing for the adhesiveness of the pre-patinatedcoating an
34、d its resistance to flaking shall be done in accordancewith the bend test section of Practice B571.11.2 Acceptance or rejection based on color shall be bymutual agreement between producer and consumer.12. Test Methods12.1 The chemical composition of the base copper sheetshall, in case of disagreemen
35、t, be determined by Test MethodsE478.12.2 Color Fade ResistanceSee Practice G2396.12.3 Resistance to FlakingSee Test section of PracticeB571.13. Keywords13.1 architectural copper; building construction; flashing;pre-patinated copper; roofing copperTABLE 2 Mechanical PropertiesTemper Designation Tens
36、ile 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) 54 to 82 15 to 49H01 cold-rolled, high yield 34 (235) 42 (290) 28 (190) 60 to
37、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-weight/ft2metal.TABLE 3 Width Tolerances for Slit MetalWidth, in. (mm)Width To
38、lerances, 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), incl132 (0.79)Over 24 to 36 (610 to 914), incl364 (1.2)Over 36 (914)116 (1.
39、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 Square-Sheared MetalLength, in. (m)Length Tolerance Plus and Minus,in. (mm)Over
40、 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. (mm)Over 4 to 24 (102 to 610), incl12 (13)TABLE 8 Straightness Tolerances for
41、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. (254 mm)incl. in WidthOver 10 in. (254 mm)in WidthAll thicknesses116 (1.6)132 (
42、0.79)B882 103SUMMARY OF CHANGESCommittee B05 has identified the location of selected changes to this standard since the last issue (B882 05)that may impact the use of this standard. (Approved Oct. 1, 2010.)(1) Section 10.2 Weight Tolerance in previous issue has beeneliminated. This should have been
43、eliminated in the lastrevision when Table 1 was revised.(2) Added “maximum” to section 10.1.2.(3) Indicated G 23 as historical document.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this stan
44、dard are expressly advised that determination 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 and
45、if not revised, either reapproved or withdrawn. 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, w
46、hich you may attend. If you feel that your 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
47、,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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).B882 104
