1、Designation:B21/B21M06 Designation: B21/B21M 12Standard 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 las
2、t revision. 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 naval brass rod, bar, and shapes produced from Copper Alloy UNS Nos.
3、C46200, C46400, 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 inch-pound units or SI units are to be regarded separately as standard. Within the
4、 text, SI unitsare shown in brackets. The values stated in each system aremay not be exact equivalents; therefore, each system shall be usedindependently of the other. Combining values from the two systems may result in nonconformance with the specification.1.3 WarningMercury is a definite health ha
5、zard 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 establish appropriate safety and health practices and determine the applicability
6、 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 AlloysB249/B249M Specification for General Requirements for Wrought Copper and Cop
7、per-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 Cracking in Copper AlloysB950 Guide for Editorial Procedures and Form of Product S
8、pecifications for Copper and Copper AlloysE8 Test Methods for Tension Testing of Metallic MaterialsE8M Test Methods for Tension Testing of Metallic Materials MetricE18 Test Methods for Rockwell Hardness of Metallic MaterialsE478 Test Methods for Chemical Analysis of Copper Alloys3. General Requireme
9、nts3.1 The following sections of Specification B249/B249M constitute 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 Sampling,3.1.5 Number of Tests and Retests,3.1.6 Specimen Preparation,3.1.7 Test Methods,3.1.8 Significa
10、nce of Numerical Limits,3.1.9 Inspection,3.1.10 Rejection and Rehearing,1This specification is under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloys and is the direct responsibility of Subcommittee B05.02 on Rod, Bar,Wire, Shapes and Forgings.Current edition approved Feb. 1, 2006.
11、 Published February 2006. Originally approved in 1918. Last previous edition approved in 2001 as B21/B21M011. DOI:10.1520/B0021_B0021M-06.Current edition approved April 1, 2012. Published May 2012. Originally approved in 1918. Last previous edition approved in 2006 as B21/B21M 06. DOI:10.1520/B0021_
12、B0021M-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 int
13、ended 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 that users consult prior editions as appropriate. In all cases only the curr
14、ent 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 standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.1.11 Certification,3.1.12 Mi
15、ll Test Report,3.1.13 Packaging and Product Marking, and3.1.14 Supplementary Requirements.3.2 In addition, when a section 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/
16、B249M.4. Ordering Information4.1 Include the following informationspecified choices when placing orders for product under this specification, 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 F
17、ormcross-section such as round, hexagonal, square, and so forth,4.1.5 Diameter or distance between parallel surfaces, width and thickness (Dimensions and Permissible Variations),4.1.6 Length (Dimensions and Permissible Variations),4.1.7 Edge contours (Dimensions and Permissible Variations),4.1.8 Qua
18、ntitynumber of pieces or total weight, for each size and form, and4.1.9When product is specified for agencies of the U.S. government (Other RequirementsPurchases for U.S. Government).4.2The following are options available under this specification and are to be specified in the contract or purchase o
19、rder whenrequired:4.1.9 Intended application.4.2 The following options are available, but may not be included, unless specified at the time of placing of the order whenrequired:4.2.1 Tensile test for product12 in. 12 mm and over, for the alloys and tempers listed in Table 4.4.2.2 Residual stress tes
20、t (Performance Requirements section),4.2.3 Piston finish rod or shafting (Other Requirements section),4.2.4 Certification (Specification B249/B249M),4.2.5 Mill test report (Specification B249/B249M), and ),4.2.6 Heat identification or traceability details (Specification B249/B249M). ), and4.2.7 If p
21、roduct is purchased for agencies of the U.S. government (Other RequirementsPurchases for U.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.
22、5.2 These composition limits do not preclude the presence of other elements. Limits may be established and analysis requiredfor unnamed elements by agreement between the manufacturer or supplier, and purchaser.5.3 For copper alloys in which zinc is listed as the “remainder,” either copper or zinc ma
23、y be taken as the difference betweenthe sum of results of all other elements determined and 100 %. When copper is so determined, that difference value shall conformto the requirements given in Table 1.5.4 When all elements listed in Table 1 for the Copper Alloy UNS No. specified in the ordering info
24、rmation are determined,the sum of results shall be 99.6 % minimum.6. Temper6.1 The standard tempers for products described in this specification, as defined in Classification B601, are shown in Tables 2and 3.7. Mechanical Property Requirements7.1 Product furnished under this specification shall conf
25、orm to the mechanical property requirements prescribed in Tables 2-4.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 0.501.0Lead 0.20 max 0.20 max 1.02.0 0.401.0 1.32.2Zi
26、nc remainder remainder remainder remainder remainderIron 0.10 max 0.10 max 0.101.0 0.10 max 0.10 maxNickelA. . 0.100.50 . .AIncluding cobalt.B21/B21M 122TABLE 2 Tensile Requirements, inch-poundTemper DesignationDiameter or Distance BetweenParallelASurfaces,in.Tensile Strength,min, ksiYield Strength
27、at0.5 %Extension UnderLoad, min, ksiElongation in4 3 Diameter orThickness ofSpecimen, min,%BCode NameCopper Alloy UNS No. C46200M30 as-hot extruded all forms, all sizes 50 20 30O60 soft anneal rods and bars, all sizes 48 16 30O50 light anneal rods and bars:0.500 and under 58 27 22over 0.500 to 1.000
28、, incl 56 27 25over 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 18 22H02 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
29、 26 25over 2.000 to 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 20 30O60 soft anneal
30、rods and bars:1.000 and 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
31、54 22 27over 4.000 54 22 30H50Cextruded and drawnCshapes, all sizes 58 25 20H02 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
32、 bars:1.000 and under 67 45 13over 1.000 to 2.000, incl 62 37 18Copper Alloy UNS No. C47940M30 as-hot extruded all forms, all sizes 50 20 30O60 soft anneal rods and bars, all sizes 48 20 30O50 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, inc
33、l 54 25 22over 2.000 50 25 25H50Cextruded and drawnCshapes, all sizes 56 25 20H02 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 22over 2.000 50 25 25H04 hard rods and bars:0.500 and under 70 55 10over 0.500 to 1.000, incl 65 52 13ov
34、er 1.000 to 2.000, incl 62 45 15Copper Alloy UNS No. C48200B21/B21M 1237.1.1 Rockwell Hardness RequirementsFor the alloys and tempers listed, the product12 in. 12 mm and over in diameter ordistance between parallel surfaces should conform with the requirements prescribed in Table 4, when tested in a
35、ccordance withTest Methods E18.7.1.1.1 For the alloys, tempers, and sizes listed in Table 4, Rockwell hardness may be used as the basis of acceptance or rejectionfor mechanical properties except when the tensile test is specified in the contract or purchase order.7.1.1.2 Hardness test results outsid
36、e the ranges of Table 4 shall not be cause for rejection if the tensile property requirementsof Tables 2 and 3 are met.7.1.2 Tensile Strength RequirementsThe product shall conform with the requirements of Tables 2 and 3, when tested inaccordance with Test Methods E8 and E8M. . Whenever tensile test
37、results are obtained from both full-size and from machinedtest specimens and they differ, the results obtained from full-size test specimens shall be used to determine conformance to therequirements of this specification.8. Performance Requirements8.1 Residual Stress Test:8.1.1 When specified in the
38、 contract or purchase order, the product in drawn tempers shall be tested for residual stress accordingto the requirements of Test Method B154 or Test Method B858 and show no signs of cracking.TABLE 2 ContinuedTemper DesignationDiameter or Distance BetweenParallelASurfaces,in.Tensile Strength,min, k
39、siYield Strength at0.5 %Extension UnderLoad, min, ksiElongation in4 3 Diameter orThickness ofSpecimen, min,%BCode NameM30 as-hot extruded all forms, all sizes 52 20 25O60 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 25
40、O50 light anneal 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 4.000 54 22 25H50Cextruded and drawnCshapes, all sizes 58 25 15H02 half-hard rods and bars:1.000 and under 60 27 18over 1.000 to 2.000, in
41、cl 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 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 20 20O60 soft anneal rods and bars:1.000 and under
42、 54 20 20over 1.000 to 2.000, incl 52 20 20over 2.000 50 20 20shapes, all sizes 52 20 20O50 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 20H50Cextruded and drawnCshapes, all s
43、izes 58 25 15H02 half-hard 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 20H04 hard rods and bars:1.000 and under 67 45 10over 1.000 to 2.000, incl 62 37 13AFor rectangular bar, the Distanc
44、e Between Parallel Surfaces refers to thickness.BIn any case, a minimum gage length of 1 in. shall be used.CThis temper does not apply to hollow shapes.B21/B21M 124TABLE 3 Tensile Requirements, SITemper DesignationDiameter or Distance BetweenParallelASurfaces,mmTensileStrength,min,MPaYield Strength
45、at0.5 %Extension UnderLoad, min,MPaElongation in43 Diameter orThickness ofSpecimen, 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, inc
46、l 385 185 25over 25 to 50, incl 370 180 25over 50 to 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,
47、incl 360 170 27over 75 to 100, incl 345 150 30over 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
48、30over 25 to 50, incl 360 140 30over 50 345 140 30shapes, 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 30H50Cextruded and drawnCshape
49、s, all sizes 400 170 20H02 half-hard 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 30H04 hard rods and bars:25 and under 460 310 13over 25 to 50, incl 425 255 18Copper Alloy UNS No. C47940M30 as-hot extruded all forms, all sizes 345 140 30O60 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 25
