1、Designation: B372 17Standard Specification forSeamless Copper and Copper-Alloy Rectangular WaveguideTube1This standard is issued under the fixed designation B372; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last rev
2、ision. 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 requ
3、irements for seam-less copper and copper-alloy rectangular tube intended for useas transmission lines in electronic equipment. Five types ofmaterial are specified having the following nominal composi-tions:2Copper orCopper AlloyUNS2No.PreviouslyUsed DesignationNominal Composition, %Copper Zinc Phosp
4、horusC10100 Copper, Type OFEA99.99B. .C10200 Copper, Type OFA99.95B. .C10300 Copper, Type OFXLPA99.95B. 0.003C12000 Copper, Type DLPA99.90B. 0.008C22000 Commercialbronze, 90 %90 10 .ATypes OF, OFE, OFXLP, and DLP are described in Classification B224.BMinimum copper percentage.1.2 The values stated i
5、n inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units which are provided for informationonly and are not considered standard.1.3 The following safety hazard caveat pertains only to thetest method(s) described in this specification.1
6、.3.1 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety, health, and environmental practices and deter-mine the applicability of regulatory limitations prior to us
7、e.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers
8、to Trade (TBT) Committee.2. Referenced Documents2.1 The following documents of the issue in effect on dateof material purchase form a part of this specification to theextent referenced herein:2.2 ASTM Standards:3B170 Specification for Oxygen-Free Electrolytic CopperRefinery ShapesB193 Test Method fo
9、r Resistivity of Electrical ConductorMaterialsB224 Classification of CoppersB428 Test Method for Angle of Twist in Rectangular andSquare Copper and Copper Alloy TubeB577 Test Methods for Detection of Cuprous Oxide (Hydro-gen Embrittlement Susceptibility) in CopperB846 Terminology for Copper and Copp
10、er AlloysE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE53 Test Method for Determination of Copper in UnalloyedCopper by GravimetryE62 Test Methods for Chemical Analysis of Copper andCopp
11、erAlloys (Photometric Methods) (Withdrawn 2010)4E255 Practice for Sampling Copper and Copper Alloys forthe Determination of Chemical CompositionE478 Test Methods for Chemical Analysis of Copper Alloys2.3 Other Document:ANSI B46.1 Surface Roughness, Waviness, and Lay51This specification is under the
12、jurisdiction ofASTM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.04 on Pipeand Tube.Current edition approved Oct. 1, 2017. Published October 2017. Originallyapproved in 1961. Last previous edition approved in 2012 as B372 12a. DOI:10.1520/B0372-17.2Th
13、e UNS system for copper and copper alloys is a simple expansion of theformer standard designation system accomplished by the addition of a prefix“ C”and a suffix “00.” The suffix can be used to accommodate composition variations ofthe base alloy.3For referenced ASTM standards, visit the ASTM website
14、, 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.4The last approved version of this historical standard is referenced onwww.astm.org.5Available from American Nation
15、al Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in a
16、ccordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.13. Terminology3.1 For defini
17、tions of terms related to copper and copperalloys, refer to Terminology B846.4. Ordering Information4.1 Include the following specified choices when placingorders for products under this specification, as applicable:4.1.1 ASTM designation and year of issue,4.1.2 Copper or copper alloy UNS No. design
18、ation,4.1.3 Outer and inner rectangular dimensions, dimensionaltolerances (Section 10),4.1.4 Length (10.6),4.1.5 Total length or number of pieces of each size,4.2 The following options are available but may not beincluded unless specified at the time of placing of the orderwhen required:4.2.1 Rockwe
19、ll (Section 8.1),4.2.2 Electrical resistivity test (Section 7),4.2.3 Embrittlement test (Section 9.2),4.2.4 Special finish (Section 11.2),4.2.5 Heat Identification (Section 13.1.1.4),4.2.6 Certification (Section 18),4.2.7 Mill Test Report (Section 19), and4.2.8 Special packing (Section 20).5. Materi
20、als and Manufacture5.1 Materials:5.1.1 The material of manufacture shall be of such purityand soundness as to be suitable for processing into the productsprescribed herein.5.1.2 When specified in the contract or purchase order thatheat identification or traceability is required, the purchasershall s
21、pecify the details desired.NOTE 1Due to the discontinuous nature of the processing of castingsinto wrought products, it is not always practical to identify a specificcasting analysis with a specific quantity of finished material.5.2 Manufacture:5.2.1 The product shall be manufactured by such hotwork
22、ing, cold-working and annealing process as to produce auniform wrought structure in the finished product.5.2.2 The product shall be hot or cold worked to the finishedsize, and subsequently annealed when required, to meet thetemper properties.6. Chemical Composition6.1 The material shall conform to t
23、he chemical compositionrequirements in Table 1 for the copper or copper alloy UNSNo. designation specified in the ordering information.6.2 These composition limits do not preclude the presenceof other elements. By agreement between the manufacturer andpurchaser, limits may be established and analysi
24、s required forunnamed elements.6.3 For alloys in which zinc is listed as “remainder,” eithercopper or zinc may be taken as the difference between the sumof results of all other elements determined and 100 %. Whenall elements for C22000 in Table 1 are determined, the sum ofthe results shall be 99.8 %
25、 minimum.7. Physical Property Requirements7.1 Electrical Resistivity Requirement:7.1.1 When specified in the contract or purchase order, theproduct furnished shall conform to the electrical mass resistiv-ity requirements prescribed in Table 2, when tested in accor-dance with Test Method B193.NOTE 1T
26、he International Annealed Copper Standard electrical con-ductivity equivalents are as follows:Electrical Resistivity,g/m2Conductivity,%0.15176 101.000.15328 100.000.15585 98.350.15614 98.160.15737 97.400.15940 96.160.17031 900.17418 888. Mechanical Property Requirements8.1 Rockwell Hardness Requirem
27、ents:8.1.1 When specified in the contract or purchase order, theproduct shall conform to the Rockwell hardness requirementprescribed in Table 3, when tested in accordance with TestMethods E18.9. Performance Requirements9.1 Microscopical Examination:9.1.1 Samples of Copper UNS Nos. C10100, C10200,C10
28、300, and C12000 shall be free of cuprous oxide asdetermined by Procedure A of Test Methods B577. In case ofa dispute, a referee method in accordance with Procedure C ofTest Methods B577 shall be used.TABLE 1 Chemical RequirementsElementComposition, %Copper UNS Nos.Copper AlloyUNS No.C22000C10100AC10
29、200BC10300 C12000Copper 99.99 min 99.95Cmin. 99.90Cmin 89.091.0Copper,+ phosphorus. . 99.95Cmin. .Phosphorus 0.0003max. 0.0010.0050.0040.012.Zinc 0.0001max. . . remainderLead, max 0.0005 . . . 0.05Iron, max 0.0010 . . . 0.05AThe following additional impurity maximum limits shall apply: As 0.0005%, S
30、b0.0004%, Te 0.0002%, O 0.0005%, Bi 0.0001%, Cd 0.0001%, Mn 0.00005%, Ni0.0010%, Se 0.0003%, Ag 0.0025%, S 0.0015% and Sn 0.0002%.BOxygen in C10200 shall be 0.0010 % max.CSilver counting as copper.TABLE 2 Electrical Resistivity Requirements for Copper UNSNos. C10100, C10200, C10300, and C12000Alloys
31、 Electrical Resistivity max. g/m2C10100 0.15585C10200 0.15737C10300 0.15940C12000 0.17418B372 1729.2 Hydrogen Embrittlement Test:9.2.1 Samples of Copper UNS Nos. C10100, C10200,C10300, and C12000 shall be capable of passing the embrittle-ment test of Procedure B of Test Methods B577. The actualperfo
32、rmance of this test is not mandatory under the terms ofthis specification unless definitely specified in the orderinginformation. In case of a dispute, a referee method in accor-dance with Procedure C shall be employed.10. Dimensions and Permissible Variations10.1 General:10.1.1 The standard method
33、of specifying, ordering, andmeasuring rectangular waveguide tube shall be major by minorouter dimension and major by minor inner dimension.10.1.2 All cross-sectional measurements shall be made atthe corners at a point at least12 in. (12.7 mm) from the ends.10.1.3 For the purpose of determining confo
34、rmance with thedimensional requirements prescribed in this specification, anymeasured value outside the specified limiting values for anydimension may be cause for rejection.10.2 Dimensional Tolerances:10.2.1 Standard dimensions and tolerances of waveguidetube shall be as specified in Table 4.10.2.2
35、 Other dimensions and tolerances shall be subject toagreement between the manufacturer or supplier and thepurchaser.10.3 Corner RadiiOuter corner radii shall be 0.015 in.(0.381 mm) min and 0.032 in. (0.813 mm) max. Maximuminner corner radii shall be as specified in Table 5.10.4 EccentricityThe maxim
36、um allowable eccentricity,defined as one-half the difference between the maximum andminimum opposite wall thicknesses as measured at any crosssection perpendicular to the longitudinal axis, shall be inaccordance with Table 6.10.5 RectangularityThe adjoining faces of the tube shallbe as square in rel
37、ation to each other as the best mill practicewill permit.10.6 LengthUnless otherwise specified, waveguide tubeshall be furnished in 12-ft (3.66-m) standard (stock) straightlengths with ends. The shortest permissible length of the endsshall not be less than 60 % of the nominal length (specific andsto
38、ck), and the maximum permissible weight of ends shall notexceed 25 % of the lot weight. Waveguide tube, ordered tospecific or stock lengths, with or without ends, shall conform tothe tolerances prescribed in Table 7.10.7 Squareness of CutThe departure from the squarenessof the end of any tube shall
39、not exceed 0.010 in. (0.25 mm) fortube up to58-in. (15.9-mm) dimension, inclusive, across themeasured section, and 0.016 in./in. (0.41 mm/mm) of distancebetween parallel surfaces for tube over58-in. dimension acrossthe measured section.10.8 StraightnessThe maximum curvature (depth of arc)measured al
40、ong any 2-ft (0.610-m) portion of the total lengthshall not exceed 0.010 in. (0.25 mm) edgewise and 0.020 in.(0.51 mm) flatwise on the concave external surfaces. The tubeTABLE 3 Hardness RequirementsCopper or Copper Alloy UNS No.Rockwell Hardness,30T ScaleAC10100 30 minC10200 30 minC10300 30 minC120
41、00 30 minC22000 43 to 66AThe tube shall be split along the center line of its narrow side, and Rockwellhardness readings then taken on its inner surface.TABLE 4 Dimensional TolerancesOuter Dimensions, in. (mm) Inner Dimensions, in. (mm)Nominal WallThickness, in. (mm)MajorDimensionsMinorDimensionsTol
42、erance,plus andminusMajorDimensionsMinorDimensionsTolerance, plus andminus0.420 (10.7) 0.250 (6.35) 0.003 (0.076) 0.340 (8.64) 0.170 (4.32) 0.002 (0.051) 0.040 (1.02)0.500 (12.7) 0.250 (6.35) 0.003 (0.076) 0.420 (10.7) 0.170 (4.32) 0.002 (0.051) 0.040 (1.02)0.590 (15.0) 0.335 (8.51) 0.003 (0.076) 0.
43、510 (13.0) 0.255 (6.48) 0.002 (0.051) 0.040 (1.02)0.702 (17.8) 0.391 (9.93) 0.003 (0.076) 0.622 (15.8) 0.311 (7.90) 0.002 (0.051) 0.040 (1.02)0.850 (21.6) 0.475 (12.1) 0.003 (0.076) 0.750 (19.0) 0.375 (9.52) 0.003 (0.076) 0.050 (1.27)1.000 (25.4) 0.500 (12.7) 0.004 (0.10) 0.900 (22.9) 0.400 (10.2) 0
44、.004 (0.010) 0.050 (1.27)1.250 (31.8) 0.625 (15.9) 0.004 (0.10) 1.122 (28.5) 0.497 (12.6) 0.004 (0.10) 0.064 (1.63)1.500 (38.1) 0.750 (19.0) 0.004 (0.10) 1.372 (34.8) 0.622 (15.8) 0.004 (0.10) 0.064 (1.63)1.718 (43.6) 0.923 (23.4) 0.005 (0.13) 1.590 (40.4) 0.795 (20.2) 0.005 (0.13) 0.064 (1.63)2.000
45、 (50.8) 1.000 (25.4) 0.005 (0.13) 1.872 (47.5) 0.872 (22.1) 0.005 (0.13) 0.064 (1.63)2.418 (61.4) 1.273 (32.3) 0.006 (0.15) 2.290 (58.2) 1.145 (29.1) 0.006 (0.15) 0.064 (1.63)3.000 (76.2) 1.500 (38.1) 0.006 (0.15) 2.840 (72.1) 1.340 (34.0) 0.006 (0.15) 0.080 (2.03)3.560 (90.4) 1.860 (47.2) 0.006 (0.
46、15) 3.400 (86.4) 1.700 (43.2) 0.006 (0.15) 0.080 (2.03)4.460 (113) 2.310 (58.7) 0.008 (0.20) 4.300 (109) 2.150 (54.6) 0.008 (0.20) 0.080 (2.03)5.260 (134) 2.710 (68.8) 0.008 (0.20) 5.100 (130) 2.550 (64.8) 0.008 (0.20) 0.080 (2.03)6.660 (169) 3.410 (86.6) 0.008 (0.20) 6.500 (165) 3.250 (82.6) 0.008
47、(0.20) 0.080 (2.03)B372 173shall be so positioned during measurement that gravity will nottend to increase the amount of bow. The edgewise and flatwisebow shall be determined by using a suitable straightedge.10.9 TwistThe maximum twist about the longitudinal axisof the finished tube shall not exceed
48、 1/ft of length on the faceof any surface, inside or outside. Determination of twist shallbe in accordance with Test Method B428.10.10 Surface RoughnessThe average interior surfaceroughness of the finished tube, in accordance with ANSIB46.1, shall not exceed 32 in. A.A.6for tube up to 4 in.(102 mm)
49、major ID and 64 in. A.A.6for tube whose major IDis 4 in. or over.11. Workmanship, Finish, and Appearance11.1 The product shall be free of defects, but blemishes of anature that do not interfere with the intended application areacceptable. The finished tube shall be uniform in compositionand wall thickness, straight and smooth from end to end, andshall be free of internal or external mechanical imperfections inaccordance with good commercial practice. In addition, theinterior surface of the tube shall be free of burrs, plug marks,chatter marks, dirt, grease,
