1、Designation:B12907 Designation: B129 12Standard Specification forCartridge Brass Cartridge Case Cups1This 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 revisio
2、n. 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 establishes the requirements for annealed cartridge brass cups produced of Copper Alloy UNS No.C26000 for proc
3、essing into 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.1.2The values stated in inch-pound units are the standard, except for grain size, which is given in SI units. Values in parenthesesare for informat
4、ion only.1.2 UnitsValues stated in inch-pound units are to be regarded as standard, except for grain size, which is given in SI units.The values given in parentheses are mathematical conversions to SI units, which are provided for information only and are notconsidered standard.2. Referenced Documen
5、ts2.1 ASTM Standards:2B601 Classification for Temper Designations 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 Specific
6、ationsE112 Test Methods for Determining Average Grain SizeE255 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, refer to
7、Terminology B846.3.2 Definitions of Terms Specific to This Standard: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 Orders of product under this specification should include the following in
8、formation:4.1.1 ASTM designation and year of issue,4.1.2 Type (Section 1),4.1.3 Grain size (Section 78),4.1.4 Dimensions and tolerances (see 8.18.1.4),4.1.5 Drawing number to which order applies (see 8.18.1.4), and4.1.6 When the material is purchased for agencies of the U.S. Government, (see Supplem
9、entary Requirements section).5. Material and Manufacture5.1 Material:5.1.1 The material of manufacture shall be annealed plate, sheet, strip, or disks of wrought Alloy UNS No. C26000 processedto produce even-topped cups.1This specification is under the jurisdiction of ASTM Committee B05 on Copper an
10、d Copper Alloys and is the direct responsibility of Subcommittee B05.01 on Plate,Sheet, and Strip.Current edition approved Oct.April 1, 2007.2012. Published October 2007.May 2012. Originally approved in 1940. Last previous edition approved in 20022007 asB129 027. DOI: 10.1520/B0129-07.10.1520/B0129-
11、12.2For 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.1This document is not an ASTM standard and is intended o
12、nly 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 ver
13、sionof the standard as published by ASTM is to be considered the official document.*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.5.2 Manufacture:5.2.1 The materialpro
14、duct shall be blanked manufactured by such blanking and cuppedcupping to meet the cup dimensionsspecified, and subsequently annealed. The annealed cups shall be pickled, washed, and dried.6. Chemical Composition6.1 The productmaterial shall conform to the requirements prescribedchemical composition
15、requirements in Table 1.6.2Composition limits may be established and analysis required for unnamed elements by agreement between manufacturer andpurchaser.6.3Either copper or zinc may be taken as the difference between the sum of all elements analyzed and 100%. Copper, whendetermined by the differen
16、ce, must conform to the requirements of6.2 These composition limits do not preclude the presence of other elements. By agreement between the manufacturer andpurchaser, limits may be established and analyses required for unnamed elements6.3 Because zinc is listed as “remainder” either copper or zinc
17、may be taken as the difference between the sum of results of allelements determined and 100 %. When all elements in Table 1 . When all elements in Table 1 are analyzed, their sum shall be99.7% min.7.Grain Size of Annealed Tempers7.1Unless there is a prior agreement between the purchaser and supplier
18、, the grain size for 0.30, 0.45, and 0.50 calibers will beproduced to the grain size requirements specified in are determined, the sum of results shall be 99.7 % min.7. Temper7.1 Annealed (OS)The standard temper of annealed material are as designated in Table 2. Nominal grain size and standarddesign
19、ations are detailed in Classification B601 are shown.8. Grain Size8.1 Grain size shall be standard requirement for all products in the annealed temper.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 g
20、rain size requirements specified in Table 2.7.1.1Grain8.1.2 Grain size ranges other than those specified in Table 2 shall be established by agreement between manufacturerand purchaser.7.1.2Grain size ranges for other cups shall be established by agreement between manufacturer and purchaser.8.Dimensi
21、ons, Mass, and Permissible Variations8.1All dimensions and tolerances of cups shall be as indicated on the drawings furnished with the purchase order or contract.8.1.3 Grain size ranges for other cups shall be established by agreement between manufacturer and purchaser.8.1.4 Acceptance or rejection
22、based upon grain size 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 MethodsE112.9. Workmanship, Finish, and Appearance9.1The cups shall be uniform in qu
23、ality and shall be free of oil, grease, oxidation, stains, scale, chips, acid, dirt or grit, dentedor bent edges, laminations, 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 an
24、nealing, shall be pickled, washed, and dried. Dimensions,Mass, and Permissible Variations9.1 All dimensions and tolerances of cups shall be as indicated on the drawings furnished with the purchase order or contract.10. Sampling10.1The lot size, portion size, and selection of pieces shall be as follo
25、ws:10.1.1Workmanship, Finish, and AppearanceTABLE 1 Chemical RequirementsCopper Alloy UNS No. C26000Element Composition, %Copper 68.571.5Lead, max 0.07Iron, max 0.05Bismuth, max 0.006Zinc remainderB129 12210.1 The cups shall be uniform in quality and shall be free of oil, grease, oxidation, stains,
26、scale, chips, acid, dirt or grit, dentedor bent edges, laminations, 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
27、.1 The lot size, portion size, and selection of pieces shall be as follows:11.1.1 Lot Size40 000 lb (18 144 kg) or fraction thereof.10.1.211.1.2 Portion Size:10.1.2.1For11.1.2.1 For grain size15 cups for Type I, or 2 cups for Type II.101.1.2.2 For determination of dimensions200 cups.101.1.2.3 For th
28、e visual inspection2000 cups.101.1.3 Samples for chemical analysis are to be taken in accordance with Practice E255.11.12. Number of Tests and Retests11.1Specimens taken from each sample piece selected in accordance with 10.1.2.1 shall be tested for conformance to the grainsize requirement.11.212.1
29、Test:12.1.1 Chemical Analysis Chemical composition shall be determined in accordance with the element mean results from atleast two replicate analyses of the samples.12.2 Other Tests:12.2.1 Visual InspectionEach cup in the sample shall be visually inspected.12.2.1.1 Major DefectsNot more than 0.25 %
30、 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 shall contain the following minor defects oily cup,greasy cup, dirty or gritty cup, oxid
31、ized cup, stained cup, dented or bent edges, and scratches.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.12.4 Retests:11.2.1If
32、12.4.1 If the chemical analysis fails to conform to the specified limits, analysis shall be made on a composite sample,prepared from the pieces selected from each portion involved, consisting of either 15 cups from Type I or two cups from Type II.The results of this retest shall comply with the spec
33、ified requirements.11.2.2Failure12.4.2 Failure of more than two samples of Type I cups to comply to the grain size requirements shall be causefor rejection of the lot. If two samples fail to comply a retest shall be permitted on a sample double that of the original sample.Each of the specimens so re
34、tested shall meet the specified requirements.11.2.3Failure12.4.2.1 Failure of the two samples of Type II cups to comply to the grain size requirements shall be cause forrejection of the lot. If one sample fails, a retest shall be permitted on a sample double that of the original sample. Each of thes
35、pecimens so retested shall meet the specified requirements.12.13. Specimen Preparation12.1For13.1 For grain size measurements, either tangential grinding and polishing, or cutting, mounting, and polishing methodsmay be used to reach the zone (Fig. 1).123.1.1 The test specimen shall be prepared in ac
36、cordance with PracticeGuide E3.123.2 Specimens for chemical analysis shall be prepared in accordance with Practice E255.TABLE 2 Grain Size Requirements on SidewallAType CaliberTemperDesignationBDiameter of Average GrainSize, mmmin maxI 0.30 and 0.45 OS080 0.045 0.1200.50 OS110 0.065 0.150II Grain si
37、ze subject to agreement by the manufacturer and the pur-chaserAApproximately midway of the length of the sidewall.BStandard designations are defined in Pr Classificaticeon B601.B129 12313.14. Test Methods13.1The14.1 The properties and chemical compositions enumerated in this specification shall, in
38、case of disagreement, bedetermined in accordance with the following ASTM methods:TestASTMDesignationCopper E478Lead E478 (AA)Iron E478Zinc E478 (Titrimetric)Grain size E3, E11213.2The14.2 The test method(s) used for determination of element(s) required by contractual or purchase order agreement shal
39、lbe as agreed upon between the manufacturer and the purchaser.134.2.1 Since no recognized test method is known to be published, the determination of bismuth shall be subject to theagreement between the manufacturer and purchaser.13.314.3 Grain size measurements shall be made in a zone which is the a
40、pproximate midpoint of the side wall length andthickness of the cups, as shown in Fig. 1. At least three measurements shall be made, averaged, and recorded for each grain sizedetermination.13.4When14.4 When specified on the purchase order or contract, grain size measurements shall also be made on th
41、e base ofthe same cups as 13.314.3. These measurements shall be made in a zone approximately bounding the midpoint of the base, andapproximately the midpoint of the thickness as shown in Fig. 1.At least three measurements shall be made, averaged, and recordedfor each grain size determination.14.15.
42、Significance of Numerical Limits14.1For15.1 For the purposes of determining compliance 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 E2
43、9.PropertyRounded Unit forObserved or Calculated ValueChemical composition nearest unit in the last righthand signif-icant digit used in expressing thelimiting valueGrain size:Up to 0.055 mm, incl nearest multiple of 0.005 mmOver 0.055 to 0.160 mm, incl nearest 0.01 mm15.16. Inspection15.1Visual Ins
44、pectionEach cup in the sample shall be visually inspected.FIG. 1 Location of Areas to be Examined for Grain Size inCartridge Case CupsB129 12415.1.1Major DefectsNot more than 0.25% of the cups in the sample shall contain the following major defectsscaly metal,deep scratches, laminations, slivers, la
45、ps, cracks, and wrinkles.15.1.2Minor DefectsNot more than 2% of the cups in the sample shall contain the following minor defectsoily cup, greasycup, dirty or gritty cup, oxidized cup, stained cup, dented or bent edges, and scratches.15.216.1 The manufacturer or supplier shall inspect and make the te
46、sts 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
47、 or more opposite pointson the same periphery. The variation in wall thickness of any cup so measured shall be within the limits as shown on the drawing.NOTE1For 2For the purpose of determining conformance with the dimensional requirements prescribed in this specification, any measured valueoutside
48、the specified limiting values for any dimension may be cause for rejection.15.3If, in addition, source 16.3 Source inspection of the materialproduct by the purchaser is may be agreed upon between themanufacturer, or supplier, and the purchaser as part of the purchase order or contract, order. In suc
49、h case, the nature of the facilitiesneeded to satisfy the inspector, representing the purchaser, that the product is being furnished in accordance with thisspecificationthe specification, shall be included in the agreement. All teststesting and the inspection shall be conducted so as notto interfere unnecessarily with the operation of the works.15.4The manufacturer and 16.4 When mutually agreed upon, the purchaser, by mutual agreement, may accomplishmanufacturer, or supplier, and the purchaser, shall conduct the final inspection simultaneously. Note2A
