1、Designation: B131 12B131 17Standard Specification forCopper Alloy Bullet Jacket Cups 1This standard is issued under the fixed designation B131; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in
2、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 establishes the requirements for bullet jacket preform cups produced of Copper Alloy UNS No. C22000for processing into bullet
3、 jackets of the following types and classes:1.1.1 Type ICaliber 0.30.1.1.2 Type IICaliber 0.45.1.1.3 Type IIICaliber 0.50.1.1.4 Type IVAs specified in the contract or order.1.1.5 Class INot annealed.1.1.6 Class IIAnnealed.1.2 UnitsValues The values stated in inch-pound units are to be regarded as st
4、andard, except for grain size, which is givenin SI units. The values in parentheses are mathematical conversions to SI units, which are provided for information only and arenot considered standard.1.3 This international standard was developed in accordance with internationally recognized principles
5、on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2B601 Classification for Temper Designati
6、ons for Copper and Copper AlloysWrought and CastB846 Terminology for Copper and Copper AlloysE3 Guide for Preparation of Metallographic SpecimensE29 Practice for Using Significant Digits in Test Data to Determine Conformance with SpecificationsE112 Test Methods for Determining Average Grain SizeE255
7、 Practice for Sampling Copper and Copper Alloys for the Determination of Chemical CompositionE478 Test Methods for Chemical Analysis of Copper Alloys3. Terminology3.1 For definitions of terms related to copper and copper alloys, see Terminology B846.3.2 Definitions of Terms Specific to This Standard
8、:3.2.1 cup (cupping), na shallow cylindrical shell closed at one end, normally intended for further fabrication, formed froma blank.4. Ordering Information4.1 Include the following specified choices when placing orders for product under this specification, as applicable:4.1.1 ASTM designation and ye
9、ar of issue.4.1.2 Type and class (Section 1),4.1.3 Grain size (Section 78),1 This specification is under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloys and is the direct responsibility of Subcommittee B05.01 on Plate,Sheet, and Strip.Current edition approved April 1, 2012April 1,
10、 2017. Published May 2012April 2017. Originally approved in 1940. Last previous edition approved in 20072012 asB131 07.B131-12. DOI: 10.1520/B0131-12.10.1520/B0131-17.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual B
11、ook of ASTM Standardsvolume information, refer to the standardsstandards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may no
12、t 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 standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the en
13、d of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14.1.4 Dimensions and tolerances (see 8.19.1),4.1.5 Drawing number to which order applies (see 8.19.1), and4.1.6 Work test requirements, if required (Section 1112).), an
14、d4.1.7 In addition, when material If product is purchased for agencies of the U.S. Government (see Supplementary Requirementssection).the Supplementary Requirements section of this specification for additional requirements, if specified).5. MaterialMaterials and Manufacture5.1 Material:Materials:5.1
15、.1 The material of manufacture shall be annealed plate, sheet, strip, or disks of wrought Copper Alloy UNS No. C22000processed to produce even-topped cups.5.2 Manufacture:5.2.1 The product shall be blanked and cuppedmanufactured by such blanking and cupping to meet the cup dimensionsspecified, and s
16、ubsequently annealed, if required. The annealed cups shall be cleaned to provide a surface suitable for subsequentredrawing into bullet jackets.6. Chemical Composition6.1 The product shall conform to the chemical composition requirements prescribed in Table 1.6.2 These composition limits do not prec
17、lude the presence of other elements. By agreement between the manufacturer andpurchaser, limits may be established and analysis required for unnamed elements.6.3 Because zinc is listed as “remainder”,“remainder,” either copper or zinc may be taken as the difference between the sumof results of all o
18、ther elements determined and 100 %. When all elements in Table 1 are determined, the sum of the results shallbe 99.8 % min.7. Temper7.1 The standard tempers for products described in this specification are given in Table 2.7.1.1 Annealed tempers OS025 and OS040.8. Grain Size offor Annealed Tempers8.
19、1 Unless there is a prior agreement between the purchaser and supplier the grain size of class II cups shall be produced to haveaverage grain size corresponding to the limits of the OS025 or OS040 tempers as specified Grain size shall be the standardrequirement for all product in Table 2.the anneale
20、d tempers.8.1.1 Unless there is a prior agreement between the purchaser and supplier, the grain size of class II cups shall be produced tothe grain size requirements specified in Table 2.8.1.2 Grain size ranges other than those specified in Table 2 are to shall be established by agreement between th
21、e manufacturerand purchaser.8.1.3 Grain size ranges for other cups shall be established by agreement between the manufacturer and purchaser.8.1.4 Acceptance or rejection based upon grain size shall depend only on the average grain size of a test specimen taken fromeach of two sample portions, and ea
22、ch specimen shall be within the limits prescribed in Table 2 when determined in accordancewith Test Methods E112.7.2 Grain size ranges for other cups shall be established by agreement between manufacturer and purchaser.TABLE 1 Chemical RequirementsElement Composition, %Copper 89.091.0Lead, max 0.05I
23、ron, max 0.05Bismuth, max 0.006Zinc remainderTABLE 1 Chemical RequirementsElement Composition, %Copper 89.091.0Lead, max 0.05Iron, max 0.05Bismuth, max 0.006Zinc remainderB131 1727.3 Acceptance or rejection based upon grain size shall depend only on the average grain size of a test specimen taken fr
24、omeach of two sample portions, and each specimen shall be within the limits prescribed in Table 2 when determined in accordancewith Test Method E112.9. Dimensions, Mass, and Permissible VariationsVariation9.1 All dimensions and tolerances of cups shall be as indicated on the drawings furnished with
25、the purchase order or contract.10. Workmanship, Finish, and Appearance10.1 The cups shall be uniform in quality and shall be free of conditions which would interfere with the purpose for which thecups are intended.11. Sampling11.1 The lot size, portion size, and selection of pieces shall be as follo
26、ws:11.1.1 Lot Size40 000 lb (18 144 kg) or fraction thereof.11.1.2 Portion Size:11.1.2.1 For chemical analysis5 cups. In accordance with Practice E255, drillings, millings, etc., shall be taken inapproximately equal weight from each of the sample cups selected and combined into one composite sample.
27、The minimum weightof the composite sample that is divided into three equal parts shall be 150 g. Each of the three equal parts shall be placed in apackage and sealed: one for the seller, one for the purchaser, and one for an umpire.11.1.2.2 For grain size determination20 size20 cups.11.1.2.3 For the
28、 determination of dimensions200 cups.11.1.2.4 For the visual inspection2000 cups.11.1.2.5 For work tests500 cups or 5000 cups, when and as required.12. Number of Tests and Retests12.1 Visual InspectionTest: Each cup in the sample shall be visually inspected.12.1.1 Major DefectsChemical AnalysisNotSe
29、e 11.1.2.1more than 0.25 % of the cups in the sample shall contain thefollowing major defects: scaly metal, deep scratches, laminations, slivers, laps, cracks, or wrinkles11.1.2 Minor DefectsNot more than 2 % of the cups in the sample shall contain the following minor defects: oily cup, greasycup, d
30、irty cup, oxidized cup, dented or bent edges, or scratches.12.2 Work TestOther Tests: If required by the purchase order or contract, one of the following work tests may be performedby the purchaser before approval of a lot for shipment:12.2.1 Visual InspectionEach cup in the sample shall be visually
31、 inspected.12.2.1.1 Major DefectsNot more than 0.25 % of the cups in the sample shall contain the following major defectsscaly metal,deep scratches, laminations, slivers, laps, cracks, and wrinkles.12.2.1.2 Minor DefectsNot more than 2 % of the cups in the sample shall contain the following minor de
32、fectsoily cup, greasycup, dirty or gritty cup, oxidized cup, dented or bent edges, and scratches.12.2.2 Grain SizeEach cup in the sample shall be tested.12.2.3 Work TestFive hundred cups or more shall be subjected to a working test by processing them through the first drawingoperation. The cups shal
33、l draw satisfactorily without showing defects that will cause them to be unsuitable for the purposeintended.If required by the purchase order or contract, one of the following work tests may be performed by the purchaser beforeapproval of a lot for shipment:12.2.3.1 Five hundred cups or more shall b
34、e subjected to a working test by processing them through the first drawing operation.The cups shall draw satisfactorily without showing defects that will cause them to be unsuitable for the purpose intended.12.2.3.2 Five thousand cups shall be subjected to a working test by processing them satisfact
35、orily into bullet jackets.11.2.2 Five thousand cups shall be subjected to a working test by processing them satisfactorily into bullet jackets.12.3 Grain SizeRetest: Each cup in the sample shall be tested.12.3.1 When requested by the manufacturer or supplier, a retest shall be permitted when results
36、 of tests obtained by thepurchaser fail to conform to the requirements of the product specification.TABLE 2 Grain Size RequirementsStandard TemperDesignation(B601)Average Grain Size, mmnominalNominal minMin maxMaxOS025 0.025 0.015 0.035OS040 0.040 0.025 0.050B131 17312.3.2 If the material fails to p
37、ass the visual inspection examination or a work test, or if more than one specimen fails the grainsize test, a retest shall be permitted on a sample double that of the original sample. The result of the retest or retests shall meetthe specified requirements.12.3.3 Chemical AnalysisAn additional samp
38、le in accordance with 11.1.2.1 is permitted to be made and tested.11.4 Chemical AnalysisAn additional sample in accordance with 10.1.2.1 is permitted to be made and tested.13. Specimen Preparation13.1 For grain size measurements, either tangential grinding and polishing, or cutting, mounting, and po
39、lishing methods maybe used to reach the zone (Fig. 1).13.1.1 The test specimen shall be prepared in accordance with PracticeGuide E3.13.2 Specimens for chemical analysis shall be prepared in accordance with Practice E255.14. Test Methods13.1 The properties and chemical composition enumerated in this
40、 specification shall, in case of disagreement, be determined inaccordance with the following ASTM methods:Test ASTM DesignationCopper E478Lead E478(AA)Iron E478Zinc E478 (Titrimetric)Grain size E3, E11214.1 The test method(s) used for determination of element(s) required by contractual or purchase o
41、rder agreement shall be asagreed upon between the manufacturer and the purchaser.Chemical Analyses:14.1.1 In cases of disagreement, test methods for chemical analysis shall be subject to agreement between the manufacturer orsupplier and the purchaser. The following table is a list of published metho
42、ds, some of which may no longer be viable, which alongwith others not listed, may be used subject to agreement.Test MethodCopper E478Lead E478 (AA)Iron E478Zinc E478 (Titrimetric)14.1.2 Since no recognized test method is known to be published, The test method(s) to be followed for the determination
43、ofbismuth shall be subject to the agreement element(s) resulting from contractual or purchase order agreement shall be as agreedupon between the manufacturer or supplier and purchaser.14.1.2.1 Since no recognized test method is known to be published, the determination of bismuth shall be subject to
44、agreementbetween the manufacturer and the purchaser.14.2 Grain size measurements shall be made in a zone that is the approximate mid-point of the sidewall length and thicknessof the cup as shown in Fig. 1. At least three measurements shall be made, averaged, and recorded for each grain sizedetermina
45、tion.Other Tests:FIG. 1 Location of Areas to Be Examined for Grain Size in Bullet Jacket CupsB131 17414.2.1 The product furnished shall conform to specified requirements when subjected to test in accordance with the followingtable:Test MethodGrain Size E3, E11214.2.2 Grain size measurements shall be
46、 made in a zone that is the approximate mid-point of the side-wall length and thicknessof the cups as shown in Fig. 1. At least three measurements shall be made, averaged, and recorded for each grain sizedetermination.15. Significance of Numerical Limits15.1 For the purposespurpose of determining co
47、mpliance with the specified limits for requirements of the properties listed inthe following table, an observed value, or a calculated value, shall be rounded as indicated in accordance with the rounding methodof Practice E29.Property Rounded Unit for Observed or Calculated ValueChemical composition
48、 Nearest unit in the last right-hand significant digitused in expressing the limiting valueChemical Composition Nearest unit in the last right-hand significant digitused in expressing the limiting valueGrain size Nearest multiple of 0.005 mm16. Inspection16.1 The manufacturer or supplier shall inspe
49、ct and make the tests necessary to verify the furnished product conforms tospecification requirements.16.2 Measurement of DimensionsEach sample cup shall be gaged for compliance with all the dimensions shown on theapplicable drawing. In addition, each cup in the sample shall be measured for sidewall side wall thickness at two or more oppositepoints at the same distance from the mouth or base. The variation in wall thickness of any cup so measured shall be within thelimits as shown on the drawing.16.3 Source inspection of the product by the pu
