1、Designation: B 927/B 927M 08aStandard Specification forBrass Rod, Bar, and Shapes1This standard is issued under the fixed designation B 927/B 927M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A number
2、 in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.NoteEditorial corrections were made to the 2008 version and the year date was changed on Oct. 30, 2008.1. Scope*1.1 This specification establishes requir
3、ements for brass rod(round, hexagonal, and octagonal), bar (rectangular andsquare), and shapes of UNS Alloys C21000, C22000, C23000,C24000, C26000, C26800, C27000, and C27400.1.2 UnitsThe values stated in either SI units or inch-pound units are to be regarded separately as standard. Thevalues stated
4、 in each system may not be exact equivalents;therefore, each system shall be used independently of the other.Combining values from the two systems may result in non-conformance with the standard.2. Referenced Documents2.1 ASTM Standards:2B 16/B 16M Specification for Free-Cutting Brass Rod, Barand Sh
5、apes for Use in Screw MachinesB 36/B 36M Specification for Brass Plate, Sheet, Strip, AndRolled BarB 121/B 121M Specification for Leaded Brass Plate, Sheet,Strip, and Rolled BarB 124/B 124M Specification for Copper and Copper AlloyForging Rod, Bar, and ShapesB 134/B 134M Specification for Brass Wire
6、B 135 Specification for Seamless Brass TubeB 249/B 249M Specification for General Requirements forWrought Copper and Copper-Alloy Rod, Bar, Shapes andForgingsB 587 Specification for Welded Brass TubeE8 Test Methods for Tension Testing of Metallic MaterialsE8M Test Methods for Tension Testing of Meta
7、llic Mate-rials Metric3E 478 Test Methods for Chemical Analysis of CopperAlloys3. General Requirements3.1 The following sections of Specification B 249/B 249Mconstitute a part of this specification:3.1.1 Terminology,3.1.2 Materials and Manufacture,3.1.3 Workmanship, Finish, and Appearance,3.1.4 Samp
8、ling,3.1.5 Number of Tests and Retests,3.1.6 Specimen Preparation,3.1.7 Test Methods,3.1.8 Significance of Numerical Limits,3.1.9 Inspection,3.1.10 Rejection and Rehearing,3.1.11 Certification,3.1.12 Mill Test Reports,3.1.13 Product Marking,3.1.14 Packaging and Package Marking, and3.1.15 Supplementa
9、ry Requirements.3.2 In addition, when a section with a title identical to thatreferenced in 3.1, above, appears in this specification, itcontains additional requirements that supplement those thatappear in Specification B 249/B 249M.4. Ordering Information4.1 Include the following information when p
10、lacing ordersfor product under this specification, as applicable:4.1.1 ASTM Designation and year of issue,4.1.2 Copper Alloy UNS No. designation,4.1.3 Temper,4.1.4 Cross section (round, hexagonal, octagonal, rectangu-lar, or square),4.1.5 Quantity (total weight, footage, or number of pieces ofeach t
11、emper, cross section, and alloy),4.1.6 Dimensions (diameter or distance between parallelsurfaces, width and thickness, length),4.1.7 Type of edge (square corners, rounded edge, full-rounded edge),4.1.8 How furnished (specific lengths with or without ends),and1This specification is under the jurisdic
12、tion ofASTM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.02 on Rod,Bar, Wire, Shapes and Forgings.Current edition approved Oct. 30, 2008. Published November 2008. Originallyapproved in 2003. Last previous edition approved in 2008 as B 927 08.2For refe
13、renced 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.3Withdrawn. The last approved version of this historical standard is r
14、eferencedon 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.4.1.9 If product is purchased for agencies of the U.S.Government (Specification B 249/B 249M).
15、4.2 The following requirements are available to this speci-fication and should be specified in the contract or purchaseorder when required:4.2.1 Certification (Specification B 249/B 249M), and4.2.2 Mill Test Report (Specification B 249/B 249M).5. Materials and Manufacture5.1 Materials:5.1.1 The mate
16、rial of manufacture shall be cast billets, logs,or rods of Copper Alloy UNS Nos. C21000, C22000, C23000,C24000, C26000, C26800, C27000, or C274000 of such purity,soundness, and structure to be suitable for processing into theproducts prescribed herein.5.2 Manufacture:5.2.1 The products shall be manu
17、factured by such hotworking, cold working, and annealing processing as to producea uniform wrought structure in the finished product.6. Chemical Composition6.1 The material shall conform to the chemical compositionrequirements in Table 1 for the copper alloy UNS No.designation specified in the order
18、ing information.6.2 These composition limits do not preclude the presenceof other elements. By agreement between the manufacturer andthe purchaser, limits may be established and analysis requiredfor unnamed elements.6.3 For alloys in which zinc is listed as “remainder,” eithercopper or zinc may be t
19、aken as the difference between the sumof results of all other elements determined and 100 %.6.4 When all elements specified for a given alloy in Table 1are determined, the sum of the results shall be as shown in thefollowing table:Alloy UNS Nos.Sum of Results,Percent, MinimumC21000, C22000, C23000,
20、C24000 99.8C26000, C26800, C27000, C27400 99.77. Temper7.1 The standard tempers for rod and bar described in thisspecification are given in Tables 2 and 3.7.1.1 O60 (Soft Anneal),7.1.2 H01 (14 Hard),7.1.3 H02 (12 Hard), and7.1.4 H04 (Hard).7.2 Other tempers, and temper for shapes, shall be subject t
21、oagreement between the manufacturer and the purchaser.8. Mechanical Property Requirements8.1 Tensile Strength Requirements:8.1.1 Product furnished under this specification shall con-form to the tensile requirements prescribed in Tables 2 and 3,when tested in accordance with Test Methods E8or E8M.9.
22、Purchases for U.S. Government9.1 When specified in the contract or purchase order,product purchased for agencies of the U.S. government shallconform to the special government requirements stipulated inthe Supplementary Requirements section of SpecificationB 249/B 249M.10. Dimensions and Permissible
23、Variations10.1 The dimensions and tolerances for rod, bar, and shapesdescribed by this specification shall be as specified in Specifi-cation B 249/B 249M with particular reference to the followingtables and related paragraphs.10.1.1 Diameter or Distance Between Parallel Surfaces:10.1.1.1 RodTable 1.
24、10.1.1.2 BarTables 8 and 10.10.1.2 ShapesDimensional tolerances shall be subject toagreement between the manufacturer and the purchaser.10.1.3 LengthTables 13 and 14.10.1.4 StraightnessTable 16General Use section.10.1.5 Edge contoursParagraph 6.5.11. Test Methods11.1 Chemical Analysis:11.1.1 In case
25、s of disagreement, determine the compositionusing the following methods:Element Test MethodCopper E 478Lead E 478 (AA)Iron E 478Zinc E 478 (Titrimetric)11.1.2 Test methods to be followed for the determination ofelements resulting from contractual or purchase order agree-ment shall be as agreed upon
26、between the manufacturer orsupplier and the purchaser.12. Keywords12.1 brass bar; brass rod; brass shape; copper-alloy rod;C21000; C22000; C23000; C24000; C26000; C26800;C27000; C27400TABLE 1 Chemical RequirementsCopper AlloyUNS No.Composition, %Copper Lead, max Iron, max ZincC21000 94.0-96.0 0.05 0
27、.05 remainderC22000 89.0-91.0 0.05 0.05 remainderC23000 84.0-86.0 0.05 0.05 remainderC24000 78.5-81.5 0.05 0.05 remainderC26000 68.5-71.5 0.07 0.05 remainderC26800 64.0-68.5 0.09 0.05 remainderC27000 63.0-68.5 0.09 0.07 remainderC27400 61.0-64.0 0.09 0.05 remainderB 927/B 927M 08a2TABLE 2 Tensile Re
28、quirements (Inch-Pound Units)TemperDiameter orDistance BetweenParallel Surfaces, in.Tensile Strength,minYield Strength at0.5 % ExtensionUnder Load, minElongationAin43 diameter or43 thickness, minCode Name ksi ksi %Copper Alloy UNS No. C21000 Rod (round, hexagonal, octagonal)O60 Soft Anneal All sizes
29、 30 10 25H0114 Hard Under1212 to 1, inclover 1363432161412151719H0212 Hard Under1212 to 1, inclover 14240372523208911H04 Hard Under1212 to 1, inclover 1 to 2 incl524845403735579Copper Alloy UNS No. C21000 BarBO60 Soft Anneal All sizes 30 10 25H0114 Hard Under1212 to 2, incl343214121719Copper Alloy U
30、NS No. C22000 Rod (round, hexagonal, octagonal)060 Soft Anneal All sizes 32 10 25H0114 Hard Under1212 to 1, inclover 1393734201715151719H0212 Hard Under1212 to 1, inclover 150454030272571012H04 Hard Under1212 to 1, inclover 1 to 2 incl575550403735579Copper Alloy UNS No. C22000 BarBO60 Soft Anneal Al
31、l sizes 32 10 25H0114 Hard Under1212 to 2, incl353416151719Copper Alloy UNS No. C23000 Rod (round, hexagonal, octagonal)O60 Soft Anneal All sizes 35 10 25H0114 Hard Under1212 to 1, inclover 1444240201715151719H0212 Hard Under1212 to 1, inclover 150454030272571012H04 Hard Under1212 to 1, inclover 1 t
32、o 2 incl636058403735579Copper Alloy UNS No. C23000 BarBO60 Soft Anneal All sizes 35 10 25H0114 Hard Under1212 to 1, inclover 1 to 2 incl403836151311192225H0212 Hard Under1212 to 1, inclover 1 to 2 incl444240201715151719Copper Alloy UNS No. C24000 Rod (round, hexagonal, octagonal)O60 Soft Anneal All
33、sizes 40 10 30H0114 Hard Under1212 to 1, inclover 1474543252018182022H0212 Hard Under1212 to 1, inclover 1534843333028101315H04 Hard Under1212 to 1, inclover 1 to 2 incl68656045403581012B 927/B 927M 08a3TABLE 2 ContinuedTemperDiameter orDistance BetweenParallel Surfaces, in.Tensile Strength,minYield
34、 Strength at0.5 % ExtensionUnder Load, minElongationAin43 diameter or43 thickness, minCode Name ksi ksi %Copper Alloy UNS No. C24000 BarBO60 Soft Anneal All sizes 40 10 30H0114 Hard Under1212 to 1, inclover 1 to 2 incl454341201816202225Copper Alloy UNS No. C26000 Rod (round, hexagonal, octagonal)O60
35、 Soft Anneal All sizes 40 12 30H0114 Hard Under1212 to 1, inclover 1504846302520202428H0212 Hard Under1212 to 1, inclover 1575450353230152025H04 Hard Under1212 to 1, inclover 1 to 2 incl706560504540101520Copper Alloy UNS No. C26000 BarBO60 Soft Anneal All sizes 40 12 30H0212 Hard Under1212 to 1, inc
36、lover 1 to 2 incl504540251715102020Copper Alloy UNS No. C26800, C27000, C27400 Rod (round, hexagonal, octagonal)O60 Soft Anneal All sizes 40 12 30H0114 Hard Under1212 to 1, inclover 1474543252018182022H0212 Hard Under1212 to 1, inclover 1534843333028101315H04 Hard Under1212 to 1, inclover 1 to 2 inc
37、l68656045403581012Copper Alloy UNS No. C26800, C27000, C27400 BarBO60 Soft Anneal All sizes 40 12 30H0212 Hard Under1212 to 1, inclover 1 to 2 incl504540251715102020AIn any case, a minimum gage length of 1 in. shall be used.BFor rectangular bar, the Distance Between Parallel Surfaces refers to thick
38、ness.B 927/B 927M 08a4TABLE 3 Tensile Requirements (SI Units)TemperDiameter orDistance BetweenParallel Surfaces, mmTensile Strength,minYield Strength at0.5 % ExtensionUnder Load, minElongationAin43 diameter or43 thickness, minCode Name MPa MPa %Copper Alloy UNS No. C21000 Rod (round, hexagonal, octa
39、gonal)O60 Soft Anneal All sizes 205 70 25H0114 Hard Under 1212 to 25, inclover 252502352201109585151719H0212 Hard Under 1212 to 25, inclover 252902752551701601408911H04 Hard Under 1212 to 25, inclover 25 to 50 incl360330310275255240579Copper Alloy UNS No. C21000 BarBO60 Soft Anneal All sizes 205 70
40、25H0114 Hard Under 1212 to 50, incl23522095851719Copper Alloy UNS No. C22000 Rod (round, hexagonal, octagonal)060 Soft Anneal All sizes 220 70 25H0114 Hard Under 1212 to 25, inclover 25270255235140115105151719H0212 Hard Under 1212 to 25, inclover 2534531027520518517071012H04 Hard Under 1212 to 25, i
41、nclover 25 to 50 incl395380345275255240579Copper Alloy UNS No. C22000 BarBO60 Soft Anneal All sizes 220 70 25H0114 Hard Under 1212 to 50, incl2402351101051719Copper Alloy UNS No. C23000 Rod (round, hexagonal, octagonal)O60 Soft Anneal All sizes 240 70 25H0114 Hard Under 1212 to 25, inclover 25305290
42、275140115103151719H0212 Hard Under 1212 to 25, inclover 2534531027520518517071012H04 Hard Under 1212 to 25, inclover 25 to 50 incl435415400275255240579Copper Alloy UNS No. C23000 BarBO60 Soft Anneal All sizes 240 70 25H0114 Hard Under 1212 to 25, inclover 25 to 50 incl2752602501059075192225H0212 Har
43、d Under 1212 to 25, inclover 25 to 50 incl305290275140115105151719Copper Alloy UNS No. C24000 Rod (round, hexagonal, octagonal)O60 Soft Anneal All sizes 275 70 30H0114 Hard Under 1212 to 25, inclover 25325310295170140125182022H0212 Hard Under 1212 to 25, inclover 25365330295230205195101315H04 Hard U
44、nder 1212 to 25, inclover 25 to 50 incl47045041531027524081012B 927/B 927M 08a5APPENDIXES(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), whi
45、ch 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
46、 Weightsand Measures. Since 1 ksi = 6 894 757 Pa the metric equiva-lents are expressed as megapascal (MPa), which is the same asMN/m2and N/mm2.TABLE 3 ContinuedTemperDiameter orDistance BetweenParallel Surfaces, mmTensile Strength,minYield Strength at0.5 % ExtensionUnder Load, minElongationAin43 dia
47、meter or43 thickness, minCode Name MPa MPa %Copper Alloy UNS No. C24000 BarBO60 Soft Anneal All sizes 275 70 30H0114 Hard Under 1212 to 25, inclover 25 to 50 incl310295285140125110202225Copper Alloy UNS No. C26000 Rod (round, hexagonal, octagonal)O60 Soft Anneal All sizes 275 85 30H0114 Hard Under 1
48、212 to 25, inclover 25345330315205170140202428H0212 Hard Under 1212 to 25, inclover 25395370345240220205152025H04 Hard Under 1212 to 25, inclover 25 to 50 incl485450415345310275101520Copper Alloy UNS No. C26000 BarBO60 Soft Anneal All sizes 275 85 30H0212 Hard Under 1212 to 25, inclover 25 to 50 inc
49、l345310275170115105102020Copper Alloy UNS No. C26800, C27000, C27400 Rod (round, hexagonal, octagonal)O60 Soft Anneal All sizes 275 85 30H0114 Hard Under 1212 to 25, inclover 25325310295170140125182022H0212 Hard Under 1212 to 25, inclover 25365330295230205195101315H04 Hard Under 1212 to 25, inclover 25 to 50 incl47045041531027524081012Copper Alloy UNS No. C26800, C27000, C27400 BarBO60 Soft Anneal All sizes 275 85 30H0212 Hard Under 1212 to 25, inclover 25 to 50 incl3453102751
