1、Designation: B129 12B129 17Standard Specification forCartridge Brass Cartridge Case Cups 1This standard is issued under the fixed designation B129; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number
2、 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 establishes the requirements for annealed cartridge brass cups produced of Copper Alloy UNS No.C26000 for processing into
3、 cartridge cases of the following types:1.1.1 Type I, for small arms cartridge case cups, and1.1.2 Type II, for artillery cartridge case cups.1.2 UnitsValues The values stated in inch-pound units are to be regarded as standard, except for grain size, which is givenin SI units. The values given in pa
4、rentheses are mathematical conversions to SI units, which are provided for information only andare not considered standard.1.3 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Develo
5、pment 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 Designations for Copper and Copper AlloysWrought and CastB846 Terminology for Coppe
6、r 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 Practice for Sampling Copper and Copper Alloys for the Determination of C
7、hemical CompositionE478 Test Methods for Chemical Analysis of Copper Alloys3. Terminology3.1 For definitions of terms related to copper and copper alloys, refer to Terminology B846.3.2 Definitions of Terms Specific to This Standard:3.2.1 cup (cupping), na shallow cylindrical shell closed at one end,
8、 normally intended for further fabrication, formed froma blank.4. Ordering Information4.1 Orders of Include the following specified choices when placing orders for product under this specification should includethe following information:specification, as applicable:4.1.1 ASTM designation and year of
9、 issue,4.1.2 Type (Section 1),4.1.3 Grain size (Section 8),4.1.4 Dimensions and tolerances (see(Section 8.1.49),4.1.5 Drawing number to which order applies (see(Section 8.1.49), and).4.1.6 When the material is purchased for agencies of the U.S. Government, (see Supplementary Requirements section).1
10、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, 2017. Published May 2012April 2017. Originally approved in 1940. Last previo
11、us edition approved in 20072012 asB129 07.B129-12. DOI: 10.1520/B0129-12.10.1520/B0129-17.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standardsstandards Docu
12、ment 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 not be technically possible to adequately depict all changes accurately, ASTM r
13、ecommends 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 end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box
14、 C700, West Conshohocken, PA 19428-2959. United States14.2 The following options are available but may not be included unless specified at the time of placing of the order whenrequired:4.2.1 Grain size analysis of the base (Section 14),4.2.2 Source inspection (Section 16),4.2.3 Certification,4.2.4 M
15、ill Test Report, and4.2.5 If product is purchased for agencies of the U.S. Government (see the Supplementary Requirements section of thisspecification for additional requirements, if specified).5. MaterialMaterials and Manufacture5.1 Material:Materials:5.1.1 The material of manufacture shall be anne
16、aled plate, sheet, strip, or disks of wrought Copper Alloy UNS No. C26000processed to produce even-topped cups.5.2 Manufacture:5.2.1 The product shall be manufactured by such blanking and cupping to meet the cup dimensions specified, and subsequentlyannealed. The annealed cups shall be pickled, wash
17、ed, and dried.6. Chemical Composition6.1 The material shall conform to the chemical composition requirements in Table 1.6.2 These composition limits do not preclude the presence of other elements. By agreement between the manufacturer andpurchaser, limits may be established and analysesanalysis requ
18、ired for unnamed elements6.3 Because zinc is listed as “remainder”“remainder,” either copper or zinc may be taken as the difference between the sum ofresults of all other elements determined and 100 %.When all elements in Table 1 are determined, the sum of results shall be 99.7 %min.7. Temper7.1 Ann
19、ealed (OS)The standard temper of annealed material are as designated tempers for products described in thisspecification are given in Table 2. Nominal grain size and standard designations are detailed in Classification B601 are shown.7.1.1 Annealed tempers OS080 and OS110.8. Grain Size for Annealed
20、Tempers8.1 Grain size shall be the standard requirement for all productsproduct in the annealed temper.tempers.8.1.1 Unless there is a prior agreement between the purchaser and supplier, the grain size for 0.30, 0.45, and 0.50 calibers willbe produced to the grain size requirements specified in Tabl
21、e 2.8.1.2 Grain size ranges other than those specified in Table 2 shall be established by agreement between the manufacturer andpurchaser.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 siz
22、e shall depend only on the average grain size of a test specimen as prescribedin Section 11. Each specimen shall be within the limits prescribed in Table 2 when determined in accordance with Test MethodsE112.TABLE 1 Chemical RequirementsCopper Alloy UNS No. C26000Element Composition, %Copper 68.571.
23、5Lead, max 0.07Iron, max 0.05Bismuth, max 0.006Zinc remainderTABLE 1 Chemical RequirementsCopper Alloy UNS No. C26000Element Composition, %Copper 68.571.5Lead, max 0.07Iron, max 0.05Bismuth, max 0.006Zinc remainderB129 1729. Dimensions, Mass, and Permissible VariationsVariation9.1 All dimensions and
24、 tolerances of cups shall be as indicated on the drawings furnished with the purchase order or contract.10. Workmanship, Finish, and Appearance10.1 The cups shall be uniform in quality and shall be free of oil, grease, oxidation, stains, scale, chips, acid, dirt or grit, dentedor bent edges, laminat
25、ions, slivers, laps, cracks, deep scratches, wrinkles, or other injurious defects which would interfere with thepurpose for which the cups are intended. The cups, subsequent to annealing, shall be pickled, washed, and dried.11. Sampling11.1 The lot size, portion size, and selection of pieces shall b
26、e as follows:11.1.1 Lot Size40 000 lb (18 144 kg) or fraction thereof.11.1.2 Portion Size:11.1.2.1 For grain size15 cups for Type I, or 2 cups for Type II.11.1.2.2 For determination of dimensions200 cups.11.1.2.3 For the visual inspection2000 cups.11.1.3 Samples for chemical analysis are to be taken
27、 in accordance with Practice E255.12. Number of Tests and Retests12.1 Test:12.1.1 Chemical AnalysisChemical composition shall be determined in accordance with the element mean of the results fromat least two replicate analyses of the samples.sample(s).12.2 Other Tests:12.2.1 Visual InspectionEach cu
28、p in the sample shall be visually inspected.12.2.1.1 Major DefectsNot more than 0.25 % of the cups in the sample shall contain the following major defects scalymetal, deep scratches, laminations, slivers, laps, cracks, and wrinkles.12.2.1.2 Minor DefectsNot more than 2 % of the cups in the sample sh
29、all contain the following minor defects oily cup,greasy cup, dirty or gritty cup, oxidized cup, stained cup, dented or bent edges, and scratches.12.2.2 Grain SizeSpecimens taken from each sample piece selected in accordance with 11.1.2.1 shall be tested forconformance to the grain size requirement.N
30、OTE 1A deep scratch is one 0.005 in. (0.13 mm) or greater in depth.12.3 Grain SizeSpecimens taken from each sample piece selected in accordance with 11.1.2.1 shall be tested for conformanceto the grain size requirement.NOTE 1A deep scratch is one 0.005 in. (0.13 mm) or greater in depth.12.3 Retests:
31、12.3.1 If the chemical analysis fails to conform to the specified limits, analysis shall be made on a composite sample, preparedfrom the pieces selected from each portion involved, consisting of either 15 cups from Type I or two cups from Type II. The resultsof this retest shall comply with the spec
32、ified requirements.12.3.2 Failure of more than two samples of Type I cups to comply to the grain size requirements shall be cause for rejectionof the lot. If two samples fail to comply a retest shall be permitted on a sample double that of the original sample. Each of thespecimens so retested shall
33、meet the specified requirements.TABLE 2 Grain Size Requirements on SidewallAfor Annealed (OS) ProductType CaliberStandardTemperDesignationB(B601)Diameter of Average GrainSize, mmmin maxI 0.30 and 0.45 OS080 0.045 0.1200.50 OS110 0.065 0.150II Grain size subject to agreement by the manufacturer and t
34、he pur-chaserII Grain size subject to agreement between the manufacturer and pur-chaserA Approximately midway of the length of the sidewall.B Standard designations are defined in Classification B601.B129 17312.3.2.1 Failure of the two samples of Type II cups to comply to the grain size requirements
35、shall be cause for rejection of thelot. If one sample fails, a retest shall be permitted on a sample double that of the original sample. Each of the specimens so retestedshall meet the specified requirements.13. Specimen Preparation13.1 For grain size measurements, either tangential grinding and pol
36、ishing, or cutting, mounting, and polishing methods maybe used to reach the zone (Fig. 1).13.1.1 The test specimen shall be prepared in accordance with Guide E3.13.2 Specimens for chemical analysis shall be prepared in accordance with Practice E255.14. Test Methods14.1 The properties and chemical co
37、mpositions enumerated in this specification shall, in case of disagreement, be determinedin accordance with the following ASTM methods:TestASTMDesignationCopper E478Lead E478 (AA)Iron E478Zinc E478 (Titrimetric)Grain size E3, E11214.1 The test method(s) used for determination of element(s) required
38、by contractual or purchase order 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
39、is a list of published methods, 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 foll
40、owed for the determination 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 b
41、ismuth shall be subject to agreementbetween the manufacturer and the purchaser.14.3 Grain size measurements shall be made in a zone which is the approximate midpoint of the side wall length and thicknessof the cups, as shown in Fig. 1. At least three measurements shall be made, averaged, and recorde
42、d for each grain sizeFIG. 1 Location of Areas to be Examined for Grain Sizein Cartridge Case CupsB129 174determination.B129 17514.2 When specified on the purchase order or contract, grain size measurements shall also be made on the base of the same cupsas 14.3. These measurements shall be made in a
43、zone approximately bounding the midpoint of the base, and approximately themidpoint of the thickness as shown in Fig. 1. At least three measurements shall be made, averaged, and recorded for each grainsize determination.Other Tests:14.2.1 The product furnished shall conform to specified requirements
44、 when subjected to test in accordance with the followingtable:Test MethodGrain Size E3, E11214.2.2 Grain size measurements shall be made in a zone which is the approximate midpoint of the side wall length and thicknessof the cups, as shown in Fig. 1. At least three measurements shall be made, averag
45、ed, and recorded for each grain sizedetermination.14.2.3 When specified on the purchase order or contract, grain size measurements shall also be made on the base of the samecups as 14.2.2. These measurements shall be made in a zone approximately bounding the midpoint of the base, and approximatelyth
46、e midpoint of the thickness as shown in Fig. 1.At least three measurements shall be made, averaged, and recorded for each grainsize determination.15. Significance of Numerical Limits15.1 For the purposespurpose of determining compliance with the specified limits for requirements of the properties li
47、sted inthe following table, an observed value or a calculated value shall be rounded as indicated in accordance with the rounding methodof Practice E29.PropertyRounded Unit forObserved or Calculated ValuePropertyRounded Unit forObserved or Calculated ValueChemical composition nearest unit in the las
48、t righthand signif-icant digit used in expressing thelimiting valueChemical Composition Nearest unit in the last right-hand significantdigit used in expressing the limitingvalueGrain size:Up to 0.055 mm, incl nearest multiple of 0.005 mmUnder 0.060 mm Nearest multiple of 0.005 mmOver 0.055 to 0.160m
49、m, inclnearest 0.01 mm0.060 mm and over Nearest 0.01 mm16. Inspection16.1 The manufacturer, or supplier, shall inspect 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 side wall thickness at two or more opposite pointson the same periphery. The variation in wall thickness of any cup so measured shall be within the l
