1、Designation: B370 111 B370 12Standard 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 revi
2、sion. A number 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 NOTESection 12.1.2.1 was editorially corrected in March
3、2012.1. Scope*1.1 This specification establishes the requirements for rolled copper sheet and strip in flat lengths or coils in ounce-weightthicknesses for roofing, flashing, gutters, downspouts, and general sheet metal work in building construction.1.1.1 Products produced to this specification are
4、not intended for electrical applications.1.2 UnitsThe values stated in inch-pound units are to be regarded as standard. The values given in parentheses aremathematical conversions to SI units that are provided for information only and are not considered standard.NOTE 1Specification B101 is an associ
5、ated specification for lead-coated copper sheets and strip for building construction.1.3 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 an
6、d determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B101 Specification for Lead-Coated Copper Sheet and Strip for Building ConstructionB248 Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and R
7、olled BarB601 Classification for Temper Designations for Copper and Copper AlloysWrought 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 S
8、izeE255 Practice for Sampling Copper and Copper Alloys for the Determination of Chemical CompositionE478 Test Methods for Chemical Analysis of Copper Alloys3. General Requirements3.1 The following sections of Specification B248 constitute a part of this specification:3.1.1 Terminology,3.1.2 Material
9、s and Manufacture,3.1.3 Workmanship, Finish, and Appearance,3.1.4 Specimen Preparation,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,1 This specification is under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloy
10、s and is the direct responsibility of Subcommittee B05.01 on Plate,Sheet, and Strip.Current edition approved May 15, 2011Oct. 1, 2012. Published June 2011December 2012. Originally approved in 1961. Last previous edition approved in 20092011 asB370 09.B370 111. DOI: 10.1520/B0370-11.10.1520/B0370-12.
11、2 For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only
12、 to provide 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 versio
13、nof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.1.10 Packaging and Package Marking, and
14、3.1.11 Supplementary Requirements.3.2 In addition, when a section with a title identical to that referenced in 3.1, above, appears in this specification, it containsadditional requirements, which supplement those appearing in Specification B248.4. Terminology4.1 Definitions:4.1.1 For definitions of
15、terms related to copper and copper alloys, refer to Terminology B846.4.1.2 coil, na length of the product wound into a series of connected turns.4.1.2.1 DiscussionThe unqualified term “coil” as applied to “flat product” usually refers to a coil in which the product is spirally wound, with thesuccess
16、ive layers on top of one another (sometimes called a “roll”).4.1.3 lengths, mill, nstraight lengths, including ends, that are be manufactured conveniently in the mills.4.1.3.1 DiscussionFull length pieces usually are 8 or 10 ft (2.4 or 3.0 m) and subject to established length tolerances.4.1.4 length
17、, stock, nstraight lengths that are mill cut and stored in advance of orders.4.1.4.1 DiscussionThey usually are 8 or 10 ft (2.4 or 3.0 m) and subject to established length tolerances.4.1.5 ounce-weight, nthe weight of copper sheet or strip expressed in ounces per square foot.4.1.6 sheet, for buildin
18、g construction, na rolled flat product over 24 in. (610 mm) in width and of ounce-weight thickness from8 to 48 oz.4.1.7 strip, for building construction, na rolled flat product up to 24 in. (610 mm), inclusive, in width and of ounce-weightthickness from 8 to 48 oz.NOTE 2In 4.1.6 and 4.1.7, the 8 to
19、48 oz refers to the names commonly used in the building industry for the sizes used. The respective sizes thatcorrespond to these names are listed in Table 1.5. Ordering Information5.1 Include the following information when placing orders for product under this specification, as applicable:5.1.1 AST
20、M 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 (4.1.2-4.1.4),5.1.5 Quantity: total weight or number of pieces of each form and size, and5.1.6 When product is purchased for agencies of
21、 the U.S. Government (Section 11).5.2 The following are options available under this specification and should be specified in the contract or purchase order whenrequired:TABLE 1 Thickness Tolerances of Sheet and StripOunce-Weight/ft2TheoreticalThickness,A in.(mm)Tolerances, Plusand Minusin. (mm)6 0.
22、0081 (0.206) .001(.026)8 0.0108 (0.274) .0011(.028)10 0.0135 (0.343) .0011(.028)12 0.0162 (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)A Based on a density of 0.322 lb/in.3 (8.91 g/cm3).
23、B370 1225.2.1 Heat identification or traceability details,5.2.2 Certification, and5.2.3 Mill test report.6. Materials and Manufacture6.1 MaterialsThe material shall be any copper conforming with the chemical composition requirements (Section 7).6.2 Manufacture:6.2.1 SheetThe product shall be manufac
24、tured in flat sheets.6.2.2 StripThe product shall be manufactured in flat lengths or in coils (rolls) of one single continuous length not less than25 ft (7.5 m) wound into a cylindrical spiral.7. Chemical Composition7.1 The material shall be any copper with a minimum copper content, including silver
25、, of 99.5 %.7.1.1 Limits shall be established and analysis required for unnamed elements by agreement between the manufacturer and thepurchaser.8. Temper8.1 The standard tempers for products described in this specification are given in Table 3.8.2 Cold Rolled tempers as defined in Classification B60
26、1: H00 (cold-rolled), H01 (cold-rolled, high yield), H02 (half hard),H03 (three-quarter hard), and H04 (hard).8.3 Annealed temper as defined in Classification B601: O60 (soft)NOTE 3The purchaser should confer with the manufacturer or supplier concerning the availability of a specific temper and form
27、.NOTE 4H00 temper is commonly known in the building industry as cold-rolled temper.NOTE 5H01 temper is commonly known in the building industry as cold-rolled, high yield temper.9. Physical Property Requirements9.1 Grain SizeAlthough no grain size has been established for temper O60, the product shal
28、l be recrystallized fully asdetermined by Test Method E112.10. Mechanical Property Requirements10.1 Tensile and Yield Strength Requirements:10.1.1 The product shall conform to the requirements specified in Table 3 for the specific temper when subjected to test inaccordance with Test Methods E8.10.1.
29、2 Acceptance or rejection for mechanical properties shall be based upon the results of the tensile and yield strength tests.10.2 Rockwell Hardness Requirement The approximate Rockwell values given in Table 3 are for general information andassistance in testing and shall not be a basis for product re
30、jection.NOTE 6The Rockwell hardness test offers a quick and convenient method of checking for general conformity to the specification requirements fortemper and tensile strength.11. Purchases for U.S. Government Agencies11.1 When identified in the contract or purchase order, product purchased for ag
31、encies of the U.S. Government shall conformto the special government requirements stipulated in the Supplemental Requirements.12. Dimensions, Mass, and Permissible Variations12.1 The product shall conform to the following requirements:12.1.1 Thickness:TABLE 2 Thickness Tolerances of Sheet and Strip
32、to be Coatedfor FlashingOunce- Weight/ft2 TheoreticalThickness,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)A Based on a density of 0.322 lb/in.3 (8.91 g/cm3).B370 12312.1.1.1 Tolerances of Shee
33、t and StripThe standard method for specifying thickness shall be by ounce-weight. The theoreticalthickness for standard ounce-weights and the minimum and maximum thickness, measured at any point, shall be as specified inTable 1.12.1.2 Thickness for Coated Copper for Flashing:12.1.2.1 Tolerances offo
34、r Sheet and Strip to be Coated Subsequently Bonded with Rubber, Fibreglass or Other Material forFlashingThe standard method for specifying thickness shall be by ounce-weight. The theoretical thickness for standardounce-weights and the minimum and maximum thickness, measured at any point, shall be as
35、 specified in Table 2.12.1.3 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-She
36、ared MetalTable 7.12.1.6 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 of sample pieces shall be as follows.13.1.1 Lot SizeAn inspection lot shall be 10 000 lb (4540 kg) or
37、less of product of the same mill form, alloy, temper, andnominal dimensions, subject to inspection at one time, or shall be the product of one cast bar from a single melt charge whoseweight shall not exceed 25 000 lb (11 340 kg) that has been processed continuously and subject to inspection at one t
38、ime.13.1.2 Portion Size A portion shall be four or more pieces selected as to be representative of the lot. When the lot consist ofless than four pieces, representative samples shall be taken from each piece.13.2 Chemical Analysis:13.2.1 The sample for chemical analysis shall be taken from the piece
39、s selected and combined into 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 Practice E255, the manufacturer shall have the option of taking samples at thetime
40、the castings are poured or by taking samples from the semifinished product.13.2.2.1 When composition of the material has been determined during the course of manufacture, sampling of the finishedproduct by the manufacturer is not required.13.2.3 The number of samples to be taken for determination of
41、 chemical composition shall be as follows.13.2.3.1 When sampled at the time the castings are poured, at least one sample shall be taken for each group of castings pouredfrom the same source of molten metal.13.2.3.2 When sampled from the semifinished product, at least one sample shall be taken to rep
42、resent each 10 000 lb, or fractionthereof, except that not more than one sample shall be required per piece.13.2.3.3 Only one sample need be taken from the semifinished product of one cast bar from a single furnace melt chargecontinuously processed.13.3 Samples for All Other Tests:13.3.1 Samples for
43、 all other tests shall be taken from the sample portions of 13.1.2 and be of a convenient size to accommodatethe test and comply with the requirements of this specification.TABLE 3 Mechanical PropertiesTemper Designation Tensile Strength, ksiA (MPa) Yield Strength, at0.5 % Extension UnderLoad, min k
44、siA (MPa)Approximate Rockwell HardnessB (ForInformation Only)ScaleStandard Former Min Max F Superficial 30 TO60 soft 30 (205) 38 (260) . . . 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
45、(315) 30 (205) 7789 4357H03 three-quarter hard 41 (285) 50 (345) 32 (220) 8291 4759H04 hard 43 (295) 52 (360) 35 (240) 8693 5462A ksi = 1000 psi.B Rockwell 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
46、metal 0.012in. (0.305 mm) to 0.020 in. (0.508 mm) in thickness.B370 12414. Number of Test and Retests14.1 Tests:14.1.1 Chemical AnalysisComposition shall be determined as the mean of results from at least two replicate analyses of thesample and the results of each replication shall meet the requirem
47、ents of this specification.14.1.2 Mechanical Properties TestsTensile strength for temper O60 and tensile strength and yield strength for all othertempers shall be reported as the results obtained from specimens prepared from a sample piece and the results must meet therequirements of this specificat
48、ion.14.2 Retests:14.2.1 When requested by the manufacturer or supplier, a retest shall be permitted when test results obtained by the purchaserfail to conform with specification requirements.14.2.2 Retesting shall be as directed in this specification for the initial test(s) except that the number of
49、 test specimens shall betwice that required for the initial test.14.2.3 Test results for all specimens shall conform to the requirements of this specification in retest and failure to conform shallbe cause for lot rejection.15. Specimen Preparation15.1 Chemical Analysis15.1.1 Preparation of the analytical specimen shall be the responsibility of the reporting laboratory.TABLE 4 Width Tolerances for Slit MetalWidth, in. (mm) Width Tolerances, Plus andMinus, in. (mm)Up to 24 (610), incl 164 (0.40)Over 24 to 48 (610 to 1219), in
