1、Designation: B370 11Standard Specification forCopper Sheet and Strip for Building Construction1This standard is issued under the fixed designation B370; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A n
2、umber in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope*1.1 This specification establishes the requirements for ro
3、lledcopper sheet and strip in flat lengths or coils in ounce-weightthicknesses for roofing, flashing, gutters, downspouts, andgeneral sheet metal work in building construction.1.1.1 Products produced to this specification are not in-tended for electrical applications.1.2 UnitsThe values stated in in
4、ch-pound units are to beregarded as standard. The values given in parentheses aremathematical conversions to SI units that are provided forinformation only and are not considered standard.NOTE 1Specification B101 is an associated specification for lead-coated copper sheets and strip for building con
5、struction.1.3 This standard does not purport to address all of thesafety concerns, 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. Re
6、ferenced Documents2.1 ASTM Standards:2B101 Specification for Lead-Coated Copper Sheet and Stripfor Building ConstructionB248 Specification for General Requirements for WroughtCopper and Copper-Alloy Plate, Sheet, Strip, and RolledBarB601 Classification for Temper Designations for Copperand Copper Al
7、loysWrought and CastB846 Terminology for Copper and Copper AlloysE3 Guide for Preparation of Metallographic SpecimensE8 Test Methods for Tension Testing of Metallic MaterialsE112 Test Methods for Determining Average Grain SizeE255 Practice for Sampling Copper and Copper Alloys forthe Determination o
8、f Chemical CompositionE478 Test Methods for ChemicalAnalysis of CopperAlloys3. General Requirements3.1 The following sections of Specification B248 constitutea part of this specification:3.1.1 Terminology,3.1.2 Materials and Manufacture,3.1.3 Workmanship, Finish, and Appearance,3.1.4 Specimen Prepar
9、ation,3.1.5 Test Methods,3.1.6 Significance of Numerical Limits,3.1.7 Inspection,3.1.8 Certification,3.1.9 Mill Test Report,3.1.10 Packaging and Package Marking, and3.1.11 Supplementary Requirements.3.2 In addition, when a section with a title identical to thatreferenced in 3.1, above, appears in th
10、is specification, itcontains additional requirements, which supplement thoseappearing in Specification B248.4. Terminology4.1 DefinitionsFor definitions of terms related to copperand copper alloys, refer to Terminology B846.4.1.1 coil, na length of the product wound into a series ofconnected turns.4
11、.1.1.1 DiscussionThe unqualified term “coil” as appliedto “flat product” usually refers to a coil in which the product isspirally wound, with the successive layers on top of oneanother (sometimes called a “roll”).4.1.2 lengths, mill, nstraight lengths, including ends, thatare be manufactured conveni
12、ently in the mills.4.1.2.1 DiscussionFull length pieces usually are 8 or 10 ft(2.4 or 3.0 m) and subject to established length tolerances.4.1.3 length, stock, nstraight lengths that are mill cut andstored in advance of orders.4.1.3.1 DiscussionThey usually are 8 or 10 ft (2.4 or 3.0m) and subject to
13、 established length tolerances.1This 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.Current edition approved May 15, 2011. Published June 2011. Originallyapproved in 1961. Last p
14、revious edition approved in 2009 as B370 09. DOI:10.1520/B0370-11.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM web
15、site.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.4.1.4 ounce-weight, nthe weight of copper sheet or stripexpressed in ounces per square foot.4.1.5 sheet, for build
16、ing construction, na rolled flat prod-uct over 24 in. (610 mm) in width and of ounce-weightthickness from 8 to 48 oz.4.1.6 strip, for building construction, na rolled flat prod-uct up to 24 in. (610 mm), inclusive, in width and ofounce-weight thickness from 8 to 48 oz.NOTE 2In 4.1.5 and 4.1.6, the 8
17、 to 48 oz refers to the namescommonly used in the building industry for the sizes used. The respectivesizes that correspond to these names are listed in Table 1.5. Ordering Information5.1 Include the following information when placing ordersfor product under this specification, as applicable:5.1.1 A
18、STM designation and year of issue (for example,B370XX),5.1.2 Temper (Section 8),5.1.3 Dimensions: tolerances (Section 12),5.1.4 How furnished: flat lengths or coils (4.1.1-4.1.3),5.1.5 Quantity: total weight or number of pieces of eachform and size, and5.1.6 When product is purchased for agencies of
19、 the U.S.Government (Section 11).5.2 The following are options available under this specifi-cation and should be specified in the contract or purchase orderwhen required:5.2.1 Heat identification or traceability details,5.2.2 Certification, and5.2.3 Mill test report.6. Materials and Manufacture6.1 M
20、aterialsThe material shall be any copper conform-ing with the chemical composition requirements (Section 7).6.2 Manufacture:6.2.1 SheetThe product shall be manufactured in flatsheets.6.2.2 StripThe product shall be manufactured in flatlengths or in coils (rolls) of one single continuous length notle
21、ss than 25 ft (7.5 m) wound into a cylindrical spiral.7. Chemical Composition7.1 The material shall be any copper with a minimumcopper content, including silver, of 99.5 %.7.1.1 Limits shall be established and analysis required forunnamed elements by agreement between the manufacturerand the purchas
22、er.8. Temper8.1 The standard tempers for products described in thisspecification are given in Table 3.8.2 Cold Rolled tempers as defined in Classification B601:H00 (cold-rolled), H01 (cold-rolled, high yield), H02 (halfhard), H03 (three-quarter hard), and H04 (hard).8.3 Annealed temper as defined in
23、 Classification B601: O60(soft)NOTE 3The purchaser should confer with the manufacturer or sup-plier concerning the availability of a specific temper and form.NOTE 4H00 temper is commonly known in the building industry ascold-rolled temper.NOTE 5H01 temper is commonly known in the building industry a
24、scold-rolled, high yield temper.9. Physical Property Requirements9.1 Grain SizeAlthough no grain size has been estab-lished for temper O60, the product shall be recrystallized fullyas determined by Test Method E112.10. Mechanical Property Requirements10.1 Tensile and Yield Strength Requirements:10.1
25、.1 The product shall conform to the requirements speci-fied in Table 3 for the specific temper when subjected to test inaccordance with Test Methods E8.10.1.2 Acceptance or rejection for mechanical propertiesshall be based upon the results of the tensile and yield strengthtests.10.2 Rockwell Hardnes
26、s RequirementThe approximateRockwell values given in Table 3 are for general informationand assistance in testing and shall not be a basis for productrejection.NOTE 6The Rockwell hardness test offers a quick and convenientmethod of checking for general conformity to the specification require-ments f
27、or temper and tensile strength.11. Purchases for U.S. Government Agencies11.1 When identified in the contract or purchase order,product purchased for agencies of the U.S. Government shallconform to the special government requirements stipulated inthe Supplemental Requirements.12. Dimensions, Mass, a
28、nd Permissible Variations12.1 The product shall conform to the following require-ments:TABLE 1 Thickness Tolerances of Sheet and StripOunce-Weight/ft2TheoreticalThickness,Ain.(mm)Tolerances, Plusand Minusin. (mm)6 0.0081 (0.206) .001(.026)8 0.0108 (0.274) .0011(.028)10 0.0135 (0.343) .0011(.028)12 0
29、.0162 (0.411) .0012(.030)16 0.0216 (0.549) .0012(.031)20 0.0270 (0.686) .0012(.031)24 0.0323 (0.820) .0015(.038)32 0.0431 (1.09) .002(.05)48 0.0646 (1.64) .0025(.06)ABased on a density of 0.322 lb/in.3(8.91 g/cm3).TABLE 2 Thickness Tolerances of Sheet and Strip to be Coatedfor FlashingOunce- Weight/
30、ft2Theoretical Thickness,Ain. (mm)Tolerances,Plus and Minusin. (mm)2 .0027 (.068) .0004 (.010)3 .004 (.103) .0005 (.013)4 .0054 (.138) .0006 (.0152)5 .0067 (.171) .0006 (.0152)ABased on a density of 0.322 lb/in.3(8.91 g/cm3).B370 11212.1.1 Thickness:12.1.1.1 Tolerances of Sheet and StripThe standard
31、method for specifying thickness shall be by ounce-weight. Thetheoretical thickness for standard ounce-weights and the mini-mum and maximum thickness, measured at any point, shall beas specified in Table 1.12.1.2 Thickness for Coated Copper for Flashing:12.1.2.1 Tolerances for the Bare Copper Sheets
32、and Strip tobe Subsequently Bonded with Rubber, Fibreglass or OtherMaterial for FlashingThe standard method for specifyingthickness shall be by ounce-weight. The theoretical thicknessfor standard ounce-weights and the minimum and maximumthickness, measured at any point, shall be as specified in Tabl
33、e2.12.1.3 Weight:12.1.3.1 Weight tolerances shall be as specified in Table 1.12.1.4 Width:12.1.4.1 Tolerances for Slit MetalTable 4.12.1.4.2 Tolerance for Square-Sheared MetalTable 5.12.1.5 Length.12.1.5.1 Tolerances for Specific and StockTable 6.12.1.5.2 Tolerances for Square-Sheared MetalTable 7.1
34、2.1.6 Straightness.12.1.6.1 Tolerances or Slit MetalTable 8.12.1.6.2 Tolerances for Square-Sheared MetalTable 9.13. Sampling13.1 SamplingThe lot size, portion size, and selection ofsample pieces shall be as follows.13.1.1 Lot SizeAn inspection lot shall be 10 000 lb (4540kg) or less of product of th
35、e same mill form, alloy, temper, andnominal dimensions, subject to inspection at one time, or shallbe the product of one cast bar from a single melt charge whoseweight shall not exceed 25 000 lb (11 340 kg) that has beenprocessed continuously and subject to inspection at one time.13.1.2 Portion Size
36、Aportion shall be four or more piecesselected as to be representative of the lot. When the lot consistof less than four pieces, representative samples shall be takenfrom each piece.13.2 Chemical Analysis:13.2.1 The sample for chemical analysis shall be taken fromthe pieces selected and combined into
37、 one composite sample inaccordance with Practice E255 for product in its final form.The minimum weight of the composite sample shall be 150 g.13.2.2 Instead of sampling in accordance with PracticeE255, the manufacturer shall have the option of taking samplesat the time the castings are poured or by
38、taking samples fromthe semifinished product.TABLE 3 Mechanical PropertiesTemper Designation Tensile Strength, ksiA(MPa)Yield Strength, at0.5 % Extension UnderLoad, min ksiA(MPa)Approximate Rockwell HardnessB(ForInformation Only)ScaleStandard Former Min Max F Superficial 30 TO60 soft 30 (205) 38 (260
39、) . . . up to 65 up to 31H00 cold-rolled 32 (220) 40 (275) 20 (135) 5482 1549H01 cold-rolled, high yield 34 (235) 42 (290) 28 (190) 6084 1851H02 half hard 37 (255) 46 (315) 30 (205) 7789 4357H03 three-quarter hard 41 (285) 50 (345) 32 (220) 8291 4759H04 hard 43 (295) 52 (360) 35 (240) 8693 5462Aksi
40、= 1000 psi.BRockwell hardness values apply as follows: The F scale applies to metal 0.020 in. (0.508 mm) and over in thickness; the superficial 30T scale applies to metal 0.012in. (0.305 mm) to 0.020 in. (0.508 mm) in thickness.TABLE 4 Width Tolerances for Slit MetalWidth, in. (mm)Width Tolerances,
41、Plus andMinus, in. (mm)Up to 24 (610), incl164 (0.40)Over 24 to 48 (610 to 1219), incl364 (1.2)TABLE 5 Width Tolerances for Square-Sheared MetalWidth, in. (mm)Width Tolerances, Plus andMinus, in. (mm)Up to 24 (610), incl132 (0.79)Over 24 to 36 (610 to 914), incl364 (1.2)Over 36 (914)116 (1.6)TABLE 6
42、 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 7 Length Tolerances for Square-Sheared MetalLength, in. (m)Length Tolerance Plus and Minus,in. (mm)Over 36 to 12
43、0 (0.9 to 3), incl116 (2)TABLE 8 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 9 Straightness Tolerances for Square-Sh
44、eared 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 (0.79)B370
45、 11313.2.2.1 When composition of the material has been deter-mined during the course of manufacture, sampling of thefinished product by the manufacturer is not required.13.2.3 The number of samples to be taken for determinationof chemical composition shall be as follows.13.2.3.1 When sampled at the
46、time the castings are poured,at least one sample shall be taken for each group of castingspoured from the same source of molten metal.13.2.3.2 When sampled from the semifinished product, atleast one sample shall be taken to represent each 10 000 lb, orfraction thereof, except that not more than one
47、sample shall berequired per piece.13.2.3.3 Only one sample need be taken from the semifin-ished product of one cast bar from a single furnace melt chargecontinuously processed.13.3 Samples for All Other Tests:13.3.1 Samples for all other tests shall be taken from thesample portions of 13.1.2 and be
48、of a convenient size toaccommodate the test and comply with the requirements of thisspecification.14. Number of Test and Retests14.1 Tests:14.1.1 Chemical AnalysisComposition shall be deter-mined as the mean of results from at least two replicateanalyses of the sample and the results of each replica
49、tion shallmeet the requirements of this specification.14.1.2 Mechanical Properties TestsTensile strength fortemper O60 and tensile strength and yield strength for all othertempers shall be reported as the results obtained from speci-mens prepared from a sample piece and the results must meetthe requirements of this specification.14.2 Retests:14.2.1 When requested by the manufacturer or supplier, aretest shall be permitted when test results obtained by thepurchaser fail to conform with specification requirements.14.2.2 Rete
