1、Designation: B121/B121M 11Standard Specification forLeaded Brass Plate, Sheet, Strip, and Rolled Bar1This standard is issued under the fixed designation B121/B121M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last r
2、evision. A number in parentheses indicates the year of last reapproval.A superscript 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 require
3、ments forcopper-zinc-lead alloys (leaded brass) plate, sheet, strip, androlled bar. The following alloys are covered:Nominal Composition, %Copper Alloy Previously UsedUNS No.2Designation Copper Zinc Lead IronC33500 2 65.0 34.5 0.5 .C34000 3 65.0 34.0 1.0 .C34200 5 65.0 33.0 2.0 .C35000 . 61.5 37.4 1
4、.1 .C35300 4 61.2 37.0 1.8 .C35600 6 61.2 36.3 2.5 .1.2 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard. Within the text, theSI units are shown in brackets. The values stated in eachsystem are not exact equivalents; therefore, each system shallbe use
5、d independently of the other. Combining values from thetwo systems may result in nonconformance with the specifi-cation.2. Referenced Documents2.1 The following documents in the current issue of Book ofStandards form a part of this specification to the extentreferenced herein:2.2 ASTM Standards:3B24
6、8 Specification for General Requirements for WroughtCopper and Copper-Alloy Plate, Sheet, Strip, and RolledBarB248M Specification for General Requirements forWrought Copper and Copper-Alloy Plate, Sheet, Strip, andRolled Bar (Metric)B601 Classification for Temper Designations for Copperand Copper Al
7、loysWrought and CastB846 Terminology for Copper and Copper AlloysE8 Test Methods for Tension Testing of Metallic MaterialsE8M Test Methods for Tension Testing of Metallic Materi-als Metric4E76 Test Methods for Chemical Analysis of Nickel-CopperAlloys4E478 Test Methods for ChemicalAnalysis of CopperA
8、lloysE527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)3. General Requirements3.1 The following sections of Specification B248 or B248Mconstitute part of this specification:3.1.1 TerminologyDefinitions,3.1.2 Materials and Manufacture,3.1.3 Workmanship, Finish, and App
9、earance,3.1.4 Samplingexcept for chemical analysis,3.1.5 Number of Tests and Retests,3.1.6 Specimen Preparation,3.1.7 Test Methodsexcept for chemical analysis,3.1.8 Significance of Numerical Limits,3.1.9 Inspection,3.1.10 Rejection and Rehearing,3.1.11 Certification,3.1.12 Test Reports (Mill),3.1.13
10、 Packaging and Package Marking, and3.1.14 Supplementary Requirements.3.2 In addition, when a section with a title identical to thatreferenced in 4.1 appears in this specification, it containsadditional requirements, which supplement those appearing inSpecification B248 or B248M.1This specification i
11、s 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 Oct. 1, 2011. Published November 2011. Originallyapproved in 1939. Last previous edition approved in 2006 as B121/B121M 0
12、1(2006). DOI: 10.1520/B0121_B0121M-11.2The UNS system for copper and copper alloys (see Practice E527) is a simpleexpansion of the former standard designation system accomplished by the additionof a prefix “C” and suffix “00.” The suffix can be used to accommodate compositionvariations of the base a
13、lloy3For 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 website.4Withdrawn. The last approved version of this historical
14、standard is referencedon www.astm.org.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. Terminology4.1 DefinitionsFor standard terms related to copper andcopper alloy
15、s, refer to Terminology B846.5. Ordering Information5.1 Orders for product should include the following infor-mation, as applicable:5.1.1 ASTM designation and year of issue (B121/B121M XX).5.1.2 Copper (alloy) UNS No. designation,5.1.3 Temper (Section 8),5.1.4 Dimensions: thickness and width (see 12
16、.1.1 and12.1.2),5.1.5 Type of edge, if required: slit, sheared, sawed, squarecorners, rounded corners, rounded edges, or full-rounded edges(see 12.1.5),5.1.6 How furnished (straight lengths or coils),5.1.7 Lengths (see 12.1.3),5.1.8 Weight: total for each size, and5.2 In addition, when product is pu
17、rchased for agencies ofthe U. S. government, it shall conform to the SupplementaryRequirements as defined in Specification B248 or B248Mwhen specified in the contract or purchase order.6. Materials and Manufacture6.1 Material:6.1.1 The material of manufacture shall be a cast bar, cake,slab, and so f
18、orth, of copper alloy UNS No. C33500, C34000,C34200, C35000, C35300, or C35600 as specified in theordering information.6.1.2 In the event that heat identification or traceability isrequired, the purchaser shall specify the details desired.NOTE 1Because of the discontinuous nature of the processing o
19、fcastings into wrought products, it is not always practical to identify aspecific casting analysis with a specific quantity of finished material.6.2 Manufacture:6.2.1 The product shall be manufactured by such hot work-ing, cold working, and annealing processes as to produce auniform wrought structur
20、e in the finished product.6.2.2 The product shall be hot or cold worked to the finishedsize and subsequently annealed, when required, to meet thetemper properties specified in the ordering information.6.2.3 EdgesSlit edges shall be furnished unless otherwisespecified in the contract or purchase orde
21、r.7. Chemical Composition7.1 The materials shall conform to the compositions pre-scribed in Table 1.7.2 These specification limits do not preclude the presenceof other elements. Limits for unnamed elements may beestablished by agreement between manufacturer or supplierand purchaser.7.3 Either copper
22、 or zinc may be taken as the differencebetween the sum of all elements analyzed and 100 %. When allelements in Table 1 are analyzed, their sum shall be as shownin the table below.Copper Alloy UNS No.Copper Plus NamedElements, % min.C33500 99.6C34000 99.6C34200 99.6C35000 99.6C35300 99.5C35600 99.58.
23、 Temper8.1 Rolled MaterialThe standard tempers of rolled prod-uct are as designated in Table 2 in the column entitled “TemperStandard.” Special or nonstandard tempers are subject tonegotiation between manufacturer or supplier and purchaser.8.2 Annealed MaterialThe standard tempers of annealedproduct
24、 are as designated in Table 3 in the column entitled“Standard Temper Designation.” Special or nonstandard tem-pers are subject to negotiation between manufacturer or sup-plier and purchaser.9. Mechanical Property Requirements9.1 Tensile Strength:9.1.1 Products ordered to this specification in inch-p
25、oundunits shall be tested in accordance with Test Methods E8, andshall conform to tensile strength requirements prescribed in ksiunits in Table 2.9.1.2 Products ordered to this specification in SI units shallbe tested in accordance with Test Methods E8M, and shallconform to tensile strength requirem
26、ents prescribed in MPaunits in Table 2.9.1.3 Acceptance or rejection of roll temper product basedon mechanical properties shall depend only on the tensilestrength.9.2 Rockwell Hardness:9.2.1 Rockwell hardness tests offer a quick and convenientmethod of checking leaded brass of any temper for general
27、conformity to the requirements for tensile strength or grainsize. The approximate Rockwell hardness values for the rolledtempers are given in Table 2, and those for the annealedtempers of material 0.015 in. 0.381 mm and over in thicknessare given in Table 4 for general information and assistance int
28、esting.9.2.2 Rockwell hardness test results shall not be used as abasis for product rejection.10. Grain Size for Annealed Tempers10.1 Grain size shall be the standard requirement for allproducts in the annealed tempers.10.2 Acceptance or rejection based upon grain size shalldepend only on the averag
29、e grain size of test specimens takenfrom each of two sampling portions and each specimen shall beTABLE 1 Chemical RequirementsCopper AlloyUNS No.CompositionCopper Lead Iron ZincC33500 62.065.0 0.250.7 0.10 max remainderC34000 62.065.0 0.81.5 0.10 max remainderC34200 62.065.0 1.52.5 0.10 max remainde
30、rC35000 60.063.0 0.82.0 0.10 max remainderC35300 60.063.0 1.52.5 0.10 max remainderC35600 60.063.0 2.03.0 0.10 max remainderB121/B121M 112within the limits prescribed in Table 3 when determined inaccordance with Test Methods E112.10.3 Grain size shall be determined on a plane parallel to theflat sur
31、faces of the product.11. Other Requirements11.1 Purchases for U.S. Government AgenciesWhenidentified in the contract or purchase order, product purchasedfor agencies of the U.S. Government shall conform to thespecial government requirements stipulated in the supplemen-tal requirements given in Speci
32、fication B248 or B248M.12. Dimensions, Mass, and Permissible Variations12.1 The inch-pound dimensions and tolerances for prod-ucts covered by this specification shall be as prescribed in thecurrent edition of Specification B248, and the SI dimensionsand tolerances covered by this specification shall
33、 be as pre-scribed in the current edition of Specification B248M, withparticular reference to Section 5 and the following tables ofthose specifications:12.1.1 Thickness12.1.2 Width:12.1.2.1 Slit Metal and Slit Metal with Rolled Edges12.1.2.2 Square-Sheared Metal12.1.2.3 Sawed Metal12.1.3 Length:12.1
34、.3.1 Specific and Stock Lengths With and Without Ends12.1.3.2 Schedule of Lengths (Specific and Stock) with Ends12.1.3.3 Length Tolerances for Square-Sheared Metal12.1.3.4 Length Tolerances for Sawed Metal12.1.4 Straightness:12.1.4.1 Slit Metal or Slit Metal Either Straightened orEdge-Rolled12.1.4.2
35、 Square-Sheared Metal12.1.4.3 Sawed Metal12.1.5 Edges:12.1.5.1 Square Edges12.1.5.2 Rounded Corners12.1.5.3 Rounded Edges12.1.5.4 Full-Rounded Edges13. Workmanship, Finish and Appearance13.1 The product shall be free of defects, but blemishes ofa nature that do not interfere with the intended applic
36、ation areacceptable.14. Sampling14.1 Chemical Analysis:14.1.1 The sample for chemical analysis shall be taken fromthe pieces 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.14.1.2
37、Instead of sampling in accordance with PracticeE255, the manufacturer shall have the option of taking samplesat the time the castings are poured or by taking samples fromthe semi-finished product.TABLE 2 Tensile Strength Requirements and Approximate Rockwell Hardness Values for Rolled TempersNOTE 1P
38、late is generally available in only the O60 (soft), H01 (quarter-hard), and H02 (half-hard) tempers. Required properties for other tempersshall be agreed upon between the manufacturer and the purchaser at the time of placing the order.Temper DesignationATensile Strength Approximate Rockwell Hardness
39、BStandard Former ksiCMPaDB Scale Superficial 30-TMin MaxCopper Alloy UNS Nos. C33500, C34000, C34200, C35000, C35300, and C35600H01 quarter-hard 49 340 59 405 4065 4360H02 half-hard 55 380 65 450 5774 5466H04 hard 68 470 78 540 7684 6873H06 extra-hard 79 545 89 615 8389 7376H08 springE86 595 95 655
40、8792 7578H10 extra-springE90 620 99 685 8893 7679AStandard designations defined in Classification B601.BRockwell Hardness values apply as follows:The B scale hardness values apply to metal 0.020 in. (0.508 mm) and over in thickness, andThe 30-T scale hardness values apply to metal 0.012 in. (0.305 m
41、m) and over in thickness.Cksi = 1000 psi.DSee Appendix.ESpring and extra spring temper are generally furnished only in alloy No. 353.TABLE 3 Grain Size Requirements for Annealed MaterialCopper Alloy UNS No.StandardTemperDesignationGrain Size, mmNominal Min MaxC33500, C34000,C34200, C35000,C35300, C3
42、5600JOS070OS050OS035OS0250.0700.0500.0350.0250.0500.0350.0250.0150.1000.0700.0500.035TABLE 4 Approximate Rockwell Hardness of Annealed MaterialNominal GrainSize, mmStandardTemperDesignationApproximate Rockwell HardnessAF Scale Superficial 30-TCopper Alloy UNS Nos. C33500, C34000, C34200, C35000,C353
43、00, and C356000.070 OS070 5467 12270.050 OS050 6173 20350.035 OS035 6576 25380.025 OS025 6769 2742ARockwell hardness values apply as follows:The F scale hardness values apply to metal 0.020 in. (0.508 mm) and over inthickness, andThe 30-T scale hardness values apply to metal 0.015 in. (0.381 mm) and
44、 overin thickness.B121/B121M 11314.1.2.1 When composition of the material has been deter-mined during the course of manufacture, sampling of thefinished product by the manufacturer is not required.14.1.3 The number of samples to be taken for determinationof chemical composition shall be as follows:1
45、4.1.3.1 When sampled at the time the castings are poured,at least one sample shall be taken for each group of castingspoured from the same source of molten metal.14.1.3.2 When sampled from the semi-finished product, atleast one sample shall be taken to represent each 10 000 lb, orfraction thereof, e
46、xcept that not more than one sample shall berequired per piece.14.1.3.3 Only one sample need be taken from the semi-finished product of one cast bar from a single furnace meltcharge continuously processed.14.1.3.4 When the material is cast in the horizontal continu-ous casting mode, at least one sam
47、ple will be taken to representthe composition of the holder per cast coil.15. Test Methods15.1 Chemical Analysis:15.1.1 Chemical composition shall be determined, in case ofdisagreement, by the following appropriate method:Element Test MethodCopper E478Iron E478 (Photometric)Lead E478 (AA)Zinc E478 (
48、Titrimetric)15.1.2 Test method(s) used for the determination of ele-ment(s) required by contractual or purchase order agreementshall be as agreed upon between the manufacturer and thepurchaser.16. Keywords16.1 leaded brass plate; leaded brass rolled bar; leaded brasssheet; leaded brass strip; UNS No
49、. C33500; UNS No. C34000;UNS No. C34200; UNS No. C35000; UNS No. C35300; UNSNo. C35600APPENDIX(Nonmandatory Information)X1. METRIC EQUIVALENTSX1.1 The SI unit for strength properties now shown is inaccordance with the International System of Units (SI). Thederived SI unit for force is the newton (N), which is defined asthat force which when applied to a body having a mass of onekilogram gives it an acceleration of one metre per secondsquared (N = kgm/s2). The derived SI unit for pressure orstress is the ne
