1、Designation: B21/B21M 12B21/B21M 14Standard Specification forNaval Brass Rod, Bar, and Shapes1This standard is issued under the fixed designation B21/B21M; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope*1.1 This specification establishes the requirement
3、s for naval brass rod, bar, and shapes produced from Copper Alloy UNS Nos.C46200, C46400, C46750, C47940, C48200, or C48500.1.1.1 For piston-finish rod or shafting refer to the Other Requirements Section.1.1.2 For hot forging material, refer to Specification B124/B124M.1.2 UnitsThe values stated in
4、inch-pound units or SI units are to be regarded separately as standard. Within the text, SI unitsare shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be usedindependently of the other. Combining values from the two systems may result in n
5、onconformance with the specification.1.3 WarningMercury is a definite health hazard in use and disposal (see Performance Requirements).1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to es
6、tablish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B124/B124M Specification for Copper and Copper Alloy Forging Rod, Bar, and ShapesB154 Test Method for Mercurous Nitrate Test for Copper All
7、oysB249/B249M Specification for General Requirements for Wrought Copper and Copper-Alloy Rod, Bar, Shapes and ForgingsB601 Classification for Temper Designations for Copper and Copper AlloysWrought and CastB858 Test Method for Ammonia Vapor Test for Determining Susceptibility to Stress Corrosion Cra
8、cking in Copper AlloysB950 Guide for Editorial Procedures and Form of Product Specifications for Copper and Copper AlloysE8E8/E8M Test Methods for Tension Testing of Metallic MaterialsE8ME18 Test Methods for Tension TestingRockwell Hardness of Metallic Materials Metric (Withdrawn 2008)E18E62 Test Me
9、thods for Rockwell Hardness of Metallic MaterialsChemical Analysis of Copper and Copper Alloys(Photometric Methods) (Withdrawn 2010)3E478 Test Methods for Chemical Analysis of Copper Alloys3. General Requirements3.1 The following sections of Specification B249/B249M constitute a part of this specifi
10、cation:3.1.1 Terminology,3.1.2 Materials and Manufacture,3.1.3 Workmanship, Finish, and Appearance,3.1.4 Sampling,3.1.5 Number of Tests and Retests,3.1.6 Specimen Preparation,1 This specification is under the jurisdiction ofASTM Committee B05 on Copper and CopperAlloys and is the direct responsibili
11、ty of Subcommittee B05.02 on Rod, Bar,Wire, Shapes and Forgings.Current edition approved April 1, 2012Sept. 1, 2014. Published May 2012September 2014. Originally approved in 1918. Last previous edition approved in 20062012 asB21/B21M 06.B21/B21M 12. DOI: 10.1520/B0021_B0021M-12.10.1520/B0021_B0021M-
12、14.2 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 standards Document Summary page on the ASTM website.3 The last approved version of this historical standard is
13、 referenced on www.astm.org.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 recommends
14、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 C700, Wes
15、t Conshohocken, PA 19428-2959. United States13.1.7 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 Report,3.1.13 Packaging and Product Marking, and3.1.14 Supplementary Requirements.3.2 In addition, when a secti
16、on with a title identical to that referenced in 3.1, above, appears in this specification, it containsadditional requirements which supplement those appearing in Specification B249/B249M.4. Ordering Information4.1 Include the following specified choices when placing orders for product under this spe
17、cification, as applicable:4.1.1 ASTM designation and year of issue,4.1.2 Copper Alloy UNS No. designation (Scope),4.1.3 Temper (Temper Section and related Tables),4.1.4 Formcross-section such as round, hexagonal, square, and so forth,4.1.5 Diameter or distance between parallel surfaces, width and th
18、ickness (Dimensions and Permissible Variations),4.1.6 Length (Dimensions and Permissible Variations),4.1.7 Edge contours (Dimensions and Permissible Variations),4.1.8 Quantitynumber of pieces or total weight, for each size and form, and4.1.9 Intended application.4.2 The following options are availab
19、le, but may not be included, unless specified at the time of placing of the order whenrequired:4.2.1 Tensile test for product 12 in. 12 mm and over, for the alloys and tempers listed in Table 4.4.2.2 Residual stress test (Performance Requirements section),4.2.3 Piston finish rod or shafting (Other R
20、equirements section),4.2.4 Certification (Specification B249/B249M),4.2.5 Mill test report (Specification B249/B249M),4.2.6 Heat identification or traceability details (Specification B249/B249M), and4.2.7 If product is purchased for agencies of the U.S. government (Other RequirementsPurchases for U.
21、S. Government).5. Chemical Composition5.1 The material shall conform to the chemical composition requirements specified in Table 1 for the Copper Alloy UNS No.designation specified in the ordering information.5.2 These composition limits do not preclude the presence of other elements. Limits may be
22、established and analysis requiredfor unnamed elements by agreement between the manufacturer or supplier, and purchaser.TABLE 1 Chemical RequirementsElement,%Copper Alloy UNS No.C46200 C46400 C47940 C48200 C48500Copper 62.065.0 59.062.0 63.066.0 59.062.0 59.062.0Tin 0.501.0 0.501.0 1.22.0 0.501.0 0.5
23、01.0Lead 0.20 max 0.20 max 1.02.0 0.401.0 1.32.2Zinc remainder remainder remainder remainder remainderIron 0.10 max 0.10 max 0.101.0 0.10 max 0.10 maxNickelA . . 0.100.50 . .TABLE 1 Chemical RequirementsElement,%Copper Alloy UNS No.C46200 C46400 C46750 C47940 C48200 C48500Copper 62.065.0 59.062.0 59
24、.262.5 63.066.0 59.062.0 59.062.0Tin 0.501.0 0.501.0 1.001.80 1.22.0 0.501.0 0.501.0Lead 0.20 max 0.20 max 0.25 max 1.02.0 0.401.0 1.32.2Zinc remainder remainder remainder remainder remainder remainderIron 0.10 max 0.10 max 0.10 max 0.101.0 0.10 max 0.10 maxNickelA . . 0.50 max 0.100.50 . .Antimony
25、. . 0.050.15 . . .Phosphorus . . 0.050.15 . . .A Including cobalt.B21/B21M 142TABLE 2 Tensile Requirements, inch-poundInch-poundcolwidth=“1.25in“/COLSPECTemper DesignationDiameter or Distance BetweenBetween ParallelASurfaces,in.TensileStrength,min, ksiYield Strength at0.5 %Extension UnderLoad,Load,
26、min, ksiElongation in4 Diameter or DiameterorThicknessof ofSpecimen, min,%BCode NameCopper Alloy UNS No. C46200M30 as-hot extruded all forms, all sizes 50 2030O60 soft anneal rods and bars, all sizes 48 1630O50 light anneal rods and bars:0.500 and under 58 27 22over 0.500 to 1.000, incl 56 27 25over
27、 1.000 to 2.000, incl 54 26 25over 2.000 to 3.000, incl 52 25 27over 3.000 to 4.000, incl 50 22 30over 4.000 50 20 30H60 cold heading, forming rods, all sizes 48 1822H02 half-hard rods and bars:0.500 and under 58 27 22over 0.500 to 1.000, incl 56 27 25over 1.000 to 2.000, incl 54 26 25over 2.000 to
28、3.000, incl 52 25 27over 3.000 to 4.000, incl 50 22 30over 4.000 50 20 30H04 hard rods and bars:0.500 and under 64 40 13over 0.500 to 1.000, incl 62 38 13over 1.000 to 2.000, incl 58 34 18Copper Alloy UNS No. C46400M30 as-hot extruded all forms, all sizes 52 2030O60 soft anneal rods and bars:1.000 a
29、nd under 54 20 30over 1.000 to 2.000, incl 52 20 30over 2.000 50 20 30shapes, all sizes 52 20 30O50 light anneal rods and bars:0.500 and under 60 27 22over 0.500 to 1.000, incl 60 27 25over 1.000 to 2.000, incl 58 26 25over 2.000 to 3.000, incl 54 25 25over 3.000 to 4.000, incl 54 22 27over 4.000 54
30、 22 30H50C extruded and drawnC shapes, all sizes 58 2520H02 half-hard rods and bars:0.500 and under 60 27 22over 0.500 to 1.000, incl 60 27 25over 1.000 to 2.000, incl 58 26 25over 2.000 to 3.000, incl 54 25 25over 3.000 to 4.000, incl 54 22 27over 4.000 54 22 30H04 hard rods and bars:1.000 and unde
31、r 67 45 13over 1.000 to 2.000, incl 62 37 18Copper Alloy UNS No. C46750M30 as hot extruded all forms, all sizes 48 20 15O60 soft annealed rod and bar, all sizes 49 20 15O61 annealed rod and bar, all sizes 49 20 15H50 hot extruded and drawn rod and bar:over 0.300 to .500 48 20 5over 0.500 to 1.000 48
32、 20 10over 1.000 48 20 15Copper Alloy UNS No. C47940M30 as-hot extruded all forms, all sizes 50 2030O60 soft anneal rods and bars, all sizes 48 2030O50 light anneal rods and bars:0.500 and under 58 30 18over 0.500 to 1.000, incl 56 30 20over 1.000 to 2.0, incl 54 25 22over 2.000 50 25 25H50C extrude
33、d and drawnC shapes, all sizes 56 2520H02 half-hard rods and bars:0.500 and under 58 30 18over 0.500 to 1.000, incl 56 30 20over 1.000 to 2.000, incl 54 25 22B21/B21M 1435.3 For alloys in which zinc is listed as the “remainder,” either copper or zinc may be taken as the difference between the sumof
34、results of all other elements determined and 100 %. When copper is so determined, that difference value shall conform to therequirements given in Table 1.5.4 When all the elements listed in Table 1 for the Copper Alloy UNS No. specified in the ordering information No. aredetermined, the sum of the r
35、esults shall be 99.6 % minimum except for C46750, which shall be 99.5 % minimum.6. Temper6.1 The standard tempers for products described in this specification, as defined in Classification B601, are shown in Tables 2and 3.TABLE 2 ContinuedTemper DesignationDiameter or Distance BetweenBetween Paralle
36、lASurfaces,in.TensileStrength,min, ksiYield Strength at0.5 %Extension UnderLoad,Load, min, ksiElongation in4 Diameter or DiameterorThicknessof ofSpecimen, min,%BCode Nameover 2.000 50 25 25H04 hard rods and bars:0.500 and under 70 55 10over 0.500 to 1.000, incl 65 52 13over 1.000 to 2.000, incl 62 4
37、5 15Copper Alloy UNS No. C48200M30 as-hot extruded all forms, all sizes 52 2025O60 soft anneal rods and bars:1.000 and under 54 20 25over 1.000 to 2.000, incl 52 20 25over 2.000 50 20 25shapes, all sizes 52 20 25O50 light anneal rods and bars:1.000 and under 60 27 18over 1.000 to 2.000, incl 58 26 2
38、0over 2.000 to 3.000, incl 54 25 20over 3.000 to 4.000, incl 54 22 20over 4.000 54 22 25H50C extruded and drawnC shapes, all sizes 58 2515H02 half-hard rods and bars:1.000 and under 60 27 18over 1.000 to 2.000, incl 58 26 20over 2.000 to 3.000, incl 54 25 20over 3.000 to 4.000, incl 54 22 20over 4.0
39、00 54 22 25H04 hard rods and bars:1.000 and under 67 45 11over 1.000 to 2.000, incl 62 37 15Copper Alloy UNS No. C48500M30 as-hot extruded all forms, all sizes 52 2020O60 soft anneal rods and bars:1.000 and under 54 20 20over 1.000 to 2.000, incl 52 20 20over 2.000 50 20 20shapes, all sizes 52 20 20
40、O50 light anneal rods and bars:1.000 and under 60 27 12over 1.000 to 2.000, incl 58 26 20over 2.000 to 3.000, incl 54 25 20over 3.000 to 4.000, incl 54 22 20over 4.000 54 22 20H50C extruded and drawnC shapes, all sizes 58 2515H02 half-hard rods and bars:1.000 and under 60 27 12over 1.000 to 2.000, i
41、ncl 58 26 20over 2.000 to 3.000, incl 54 25 20over 3.000 to 4.000, incl 54 22 20over 4.000 54 22 20H04 hard rods and bars:1.000 and under 67 45 10over 1.000 to 2.000, incl 62 37 13A For rectangular bar, the Distance Between Parallel Surfaces refers to thickness.B In any case, a minimum gage length o
42、f 1 in. shall be used.C This temper does not apply to hollow shapes.B21/B21M 144TABLE 3 Tensile Requirements, SIcolwidth=“1.23in“/COLSPECTemper Designation Diameter or DistanceBetweenParallelASurfaces,mmTensileStrength,min,MPaYield Strength at0.5 %Extension UnderLoad,min,MPaElongation in4Diameter or
43、 Diameter orThicknessofSpecimen, min,%BCode NameCopper Alloy UNS No. C46200M30 as-hot extruded all forms, all sizes 345 140 30O60 soft anneal rods and bars, all sizes 330 110 30O50 light anneal rods and bars:12 and under 400 185 22over 12 to 25, incl 385 185 25over 25 to 50, incl 370 180 25over 50 t
44、o 75, incl 360 170 27over 75 to 100, incl 345 150 30over 100 345 140 30H60 cold heading, forming rods, all sizes 330 125 22H02 half-hard rods and bars:12 and under 400 185 22over 12 to 25, incl 385 185 25over 25 to 50, incl 370 180 25over 50 to 75, incl 360 170 27over 75 to 100, incl 345 150 30over
45、100 345 140 30H04 hard rods and bars:12 and under 440 275 13over 12 to 25, incl 425 260 13over 25 to 50, incl 400 235 18Copper Alloy UNS No. C46400M30 as-hot extruded all forms, all sizes 360 140 30O60 soft anneal rods and bars:25 and under 370 140 30over 25 to 50, incl 360 140 30over 50 345 140 30s
46、hapes, all sizes 360 140 30O50 light anneal rods and bars:12 and under 415 185 22over 12 to 25, incl 415 185 25over 25 to 50, incl 400 180 25over 50 to 75, incl 370 170 25over 75 to 100, incl 370 150 27over 100 370 150 30H50C extruded and drawnC shapes, all sizes 400 170 20H02 half-hard rods and bar
47、s:12 and under 415 185 22over 12 to 25, incl 415 185 25over 25 to 50, incl 400 180 25over 50 to 75, incl 370 170 25over 75 to 100, incl 370 150 27over 100 370 150 30H04 hard rods and bars:25 and under 460 310 13over 25 to 50, incl 425 255 18Copper Alloy UNS No. C46750M30 as hot extruded all forms, a
48、ll sizes 315 140 15O60 soft annealed rod and bar, all sizes 335 140 15O61 annealed rod and bar, all sizes 335 140 15H50 hot extruded and drawn rod and bar:over 8 to 12 315 140 5over 13 to 25 315 140 10over 25 315 140 15Copper Alloy UNS No. C47940M30 as-hot extruded all forms, all sizes 345 140 30O60
49、 soft anneal rods and bars, all sizes 330 140 30O50 light anneal rods and bars:12 and under 400 210 18over 12 to 25, incl 390 210 20over 25 to 50, incl 375 175 22over 50 345 175 25H50C extruded and drawnC shapes, all sizes 390 175 20H02 half-hard rods and bars:12 and under 400 210 18over 12 to 25, incl 390 210 20over 25 to 50, incl 375 175 22over 50 345 175 25B21/B21M 1457. Mechanical Property Requirements7.1 Product furnished under this specification shall conform to the mechanical property requirements prescribed in Tables
