1、Designation: B 121/B 121M 01 (Reapproved 2006)Standard Specification forLeaded Brass Plate, Sheet, Strip, and Rolled Bar1This standard is issued under the fixed designation B 121/B 121M; the number immediately following the designation indicates the yearof original adoption or, in the case of revisi
2、on, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon (e) 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
3、establishes the requirements forcopper-zinc-lead alloys (leaded brass) plate, sheet, strip, androlled bar. The following alloys are covered:Nominal Composition, %Copper Alloy Previously UsedUNS No.fvariant2Designation Copper Zinc Lead IronC33500 2 65.0 34.5 0.5 .C34000 3 65.0 34.0 1.0 .C34200 5 65.0
4、 33.0 2.0 .C35000 . 61.5 37.4 1.1 .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; the
5、refore, each system shallbe used 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
6、 herein:2.2 ASTM Standards:3B 248 Specification for General Requirements for WroughtCopper and Copper-Alloy Plate, Sheet, Strip, and RolledBarB 248M Specification for General Requirements forWrought Copper and Copper-Alloy Plate, Sheet, Strip, andRolled Bar MetricB 601 Classification for Temper Desi
7、gnations for Copperand Copper AlloysWrought and CastB 846 Terminology for Copper and Copper AlloysE8 Test Methods for Tension Testing of Metallic MaterialsE8M Test Methods for Tension Testing of Metallic Mate-rials MetricE76 Test Methods for Chemical Analysis of Nickel-CopperAlloys4E 478 Test Method
8、s for Chemical Analysis of CopperAlloysE 527 Practice for Numbering Metals and Alloys (UNS)3. General Requirements3.1 The following sections of Specification B 248 constitutepart of this specification:3.1.1 TerminologyDefinitions,3.1.2 Materials and Manufacturing,3.1.3 Workmanship, Finish, and Appea
9、rance,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 P
10、ackaging 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 B 248.1This specification is under th
11、e jurisdiction ofASTM Committee B05 on Copperand CopperAlloys and is the direct responsibility of Subcommittee B05.01 on Plate,Sheet, and Strip.Current edition approved Feb. 1, 2006. Published February 2006. Originallyapproved in 1939. Last previous edition approved in 2001 as B 121/B 121M 01.2The U
12、NS system for copper and copper alloys (see Practice E 527) 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 alloy3For referenced ASTM standards, visit t
13、he 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.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM Interna
14、tional, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4. Terminology4.1 DefinitionsFor standard terms related to copper andcopper alloys, refer to Terminology B 846.5. Ordering Information5.1 Orders for product should include the following infor-mation, as appli
15、cable:5.1.1 ASTM designation and year of issue (B 121/B 121M XX).5.1.2 Copper (alloy) UNS No. designation,5.1.3 Temper (Section 8),5.1.4 Dimensions: thickness and width (see 12.1.1 and12.1.2),5.1.5 Type of edge, if required: slit, sheared, sawed, squarecorners, rounded corners, rounded edges, or ful
16、l-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 purchased for agencies ofthe U. S. government, it shall conform to the SupplementaryRequirements as defined in Specification B
17、 248 or B 248Mwhen 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 forth. of copper alloy UNS No. C35500, C34000,C34200, C35000, C35300, or C35600 as specified in theordering information.6.1
18、.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 ofcastings into wrought products, it is not always practical to identify aspecific casting analysis with a specific quantit
19、y 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 structure in the finished product.6.2.2 The product shall be hot or cold worked to the finishedsize and subsequently annealed, whe
20、n 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 order.7. Chemical Composition7.1 The materials shall conform to the compositions pre-scribed in Table 1.7.2 These specificatio
21、n 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 or zinc may be taken as the differencebetween the sum of all elements analyzed and 100 %. When allelements in Table 1 are
22、 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. Temper8.1 Rolled MaterialThe standard tempers of rolled prod-uct are as designated in Table 2 in the column entitled “Tem
23、perStandard.” Special or nonstandard tempers are subject tonegotiation between manufacturer or supplier and purchaser.8.2 Annealed MaterialThe standard tempers of annealedproduct are as designated in Table 3 in the column entitled“Standard Temper Designation.” Special or nonstandard tem-pers are sub
24、ject 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-poundunits shall be tested in accordance with Test Methods E8, andshall conform to tensile strength requirements prescribed
25、 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 requirements prescribed in MPaunits in Table 2.9.1.3 Acceptance or rejection of roll temper product basedon mechanical properties
26、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 generalconformity to the requirements for tensile strength or grainsize. The approximate Rockwell hardness values for the rolledt
27、empers 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 intesting.9.2.2 Rockwell hardness test results shall not be used as abasis for product rejection.10. Grain Size for Annealed
28、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 average grain size of test specimens takenfrom each of two sampling portions and each specimen shall beTABLE 1 Chemical Requirem
29、entsCopper 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 remainderC35000 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 remaind
30、erB 121/B 121M 01 (2006)2within the limits prescribed in Table 3 when determined inaccordance with Test Methods E 112.10.3 Grain size shall be determined on a plane parallel to theflat surfaces of the product.11. Other Requirements11.1 Purchases for U.S. Government AgenciesWhenidentified in the cont
31、ract 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 Specification B 248.12. Dimensions, Mass, and Permissible Variations12.1 The inch-pound dimensions and tolerances for
32、 prod-ucts covered by this specification shall be as prescribed in thecurrent edition of Specification B 248, and the SI dimensionsand tolerances covered by this specification shall be as pre-scribed in the current edition of Specification of B 248M, withparticular reference to Section 5 and the fol
33、lowing 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:12.1.3.1 Specific and Stock Lengths With and Without Ends12.1.3.2 Schedule of Lengths (Specific and Stock) with Ends12.
34、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 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
35、 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 application areacceptable.14. Sampling14.1 Chemical Analysis:14.1.1 The sample for chemical analysis shall be taken fromt
36、he pieces selected and combined into one composite sample inaccordance with Practice E 255 for product in its final form.The minimum weight of the composite sample shall be 150 g.14.1.2 Instead of sampling in accordance with PracticeE 255, the manufacturer shall have the option of takingsamples at t
37、he time the castings are poured or by takingsamples from the semi-finished product.TABLE 2 Tensile Strength Requirements and Approximate Rockwell Hardness Values for Rolled TempersNOTE 1Plate is generally available in only the O60 (soft), H01 (quarter-hard), and H02 (half-hard) tempers. Required pro
38、perties for other tempersshall be agreed upon between the manufacturer and the purchaser at the time of placing the order.Temper DesignationATensile Strength Approximate Rockwell HardnessBStandard Former ksiCMPaDB Scale Superficial 30-TMin MaxCopper Alloy UNS Nos. C33500, C34000, C34200, C35000, C35
39、300, C35340, 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 8792 7578H10 extra-springE909 620 99 685 8893 7679AStandard designations defined in Classification B 601.
40、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 mm) and over in thickness.Cksi = 1000 psi.DSee Appendix.ESpring and extra spring temper are generally fu
41、rnished only in alloy No. 353.TABLE 3 Grain Size Requirements for Annealed MaterialCopper Alloy UNS No.StandardTemperDesignationGrain Size, mmNominal Min MaxC33500, C34000,C34200, C35000,C34300, C34340,and C356006OS070OS050OS035OS0250.0700.0500.0350.0250.0500.0350.0250.0150.1000.0700.0500.035TABLE 4
42、 Approximate Rockwell Hardness of Annealed MaterialNominal GrainSize, mmStandardTemperDesignationApproximate Rockwell HardnessAF Scale Superficial 30-TCopper Alloy UNS Nos. C33500, C34000, C34200, C35000,C35300, and C356000.070 OS070 5467 12270.050 OS050 6173 20350.035 OS035 6576 25380.025 OS025 676
43、9 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 overin thickness.B 121/B 121M 01 (2006)314.1.2.1 When composition of the material has been
44、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:14.1.3.1 When sampled at the time the castings are poured,at least one sample shall
45、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, except that not more than one sample shall berequired per piece.14.1.3.3 Only one sa
46、mple 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 sample will be taken to representthe composition of the holder per cast coil.15. Test
47、Methods15.1 Chemical Analysis:15.1.1 Chemical composition shall be determined, in case ofdisagreement, by the following appropriate method:Element Test MethodCopper E 478Iron E76(AA)Lead E 478 (AA)Zinc E 478 (AA)15.1.2 Test method(s) used for the determination of ele-ment(s) required by contractual
48、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 stripAPPENDIX(Nonmandatory Information)X1. METRIC EQUIVALENTSX1.1 The SI unit for strength properties now shown i
49、s 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 newton per square metre (N/m2), which has beennamed the pascal (Pa) by the General Conference on Weightsand Measures. Since 1 ksi = 6 894 757 Pa the metric equiva-lents are expressed as megapasca
