1、Designation: B372 12aStandard 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 re
2、vision. 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 Department of Defense.1. Scope*1.1 This specification establishes the requirem
3、ents 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 ZincPhos-phoru
4、sC10100 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 in in
5、ch-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.2. Referenced Documents2.1 The following documents of the issue in effect on dateof material purchase form a pa
6、rt of this specification to theextent referenced herein:2.2 ASTM Standards:3B170 Specification for Oxygen-Free Electrolytic CopperRefinery ShapesB193 Test Method for Resistivity of Electrical ConductorMaterialsB224 Classification of CoppersB428 Test Method for Angle of Twist in Rectangular andSquare
7、 Copper and Copper Alloy TubeB577 Test Methods for Detection of Cuprous Oxide (Hydro-gen Embrittlement Susceptibility) in CopperB846 Terminology for Copper and Copper AlloysE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE29 Practice for Using Significant Digits in Test Data toDetermine
8、 Conformance with SpecificationsE53 Test Method for Determination of Copper in UnalloyedCopper by GravimetryE62 Test Methods for Chemical Analysis of Copper andCopperAlloys (Photometric Methods) (Withdrawn 2010)4E255 Practice for Sampling Copper and Copper Alloys forthe Determination of Chemical Com
9、positionE478 Test Methods for Chemical Analysis of Copper Alloys2.3 Other Standard:ANSI B46.1 Surface Roughness, Waviness, and Lay53. Terminology3.1 For definitions of terms related to copper and copperalloys, refer to Terminology B846.4. Ordering Information4.1 Include the following specified choic
10、es 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. designation,4.1.3 Outer and inner rectangular dimensions, dimensionaltolerances (Section 10),4.1.4 Length (10.6),4.1.5 Total length of each size,1T
11、his specification is under the 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, 2012. Published May 2012. Originally approvedin 1961. Last previous edition approved in 2012 as B372 12
12、. DOI: 10.1520/B0372-12A.2The 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 stand
13、ards, 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.4The last approved version of this historical standard is referenced onwww.astm.org.5Av
14、ailable from American National 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 States14.2 The following
15、 options are available but may not beincluded unless specified at the time of placing of the orderwhen required:4.2.1 Rockwell (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.
16、1.1.4),4.2.6 Certification (Section 18),4.2.7 Test Report (Section 19), and4.2.8 Special packing (Section 20).5. Materials and Manufacture5.1 Materials:5.1.1 The material of manufacture shall be of such qualityand purity to be suitable for processing into the productsprescribed herein.5.2 Manufactur
17、e:5.2.1 The product shall be manufactured by such hotworking, 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
18、. Chemical Composition6.1 The material shall conform to the 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 manufac
19、turer andpurchaser, limits may be established and analysis 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 Tabl
20、e 1 are determined, the sum ofthe results shall be 99.8 % 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,
21、 when tested in accor-dance with Test Method B193.NOTE 1The International Annealed Copper Standard electrical con-ductivity equivalents are as follows:Electrical Resisitivity,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. Mech
22、anical Property Requirements8.1 Rockwell Hardness Requirements: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 TestMethod E18.9. Performance Requirements9.1 Microscopical Examin
23、ation:9.1.1 Samples of Copper UNS Nos. C10100, C10200,C10300, 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 Method B577 shall be used.9.2 Hydrogen Embrittlement Test:9.2.1 Sample
24、s 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 actualperformance of this test is not mandatory under the terms ofthis specification unless definitely specified in the orderinginformation. In case of
25、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 of specifying, ordering, andmeasuring rectangular waveguide tube shall be major by minorouter dimension and major by minor inner dimension.10
26、.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 conformance with thedimensional requirements prescribed in this specification, anyTABLE 1 Chemical RequirementsElementComposition, %Copper UNS Nos
27、.Copper AlloyUNS No.C22000C10100AC10200BC10300 C12000Copper 99.99 min 99.95Cmin. 99.90Cmin 89.091.0Copper, + phos-. . 99.95Cmin . .phorusPhosphorus 0.0003max. 0.0010.0050.0040.012.Zinc 0.0001max. . . remainderLead, max 0.0005 . . . 0.05Iron, max 0.0010 . . . 0.05AThe following additional impurity ma
28、ximum limits shall apply: As 0.0005%, Sb0.0004%, 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. C
29、10100, C10200, C10300, and C12000Alloys Electrical Resistivity max. g/m2C10100 0.15585C10200 0.15737C10300 0.15940C12000 0.17418B372 12a2measured value outside the specified limiting values for anydimension may be cause for rejection.10.2 Dimensional Tolerances:10.2.1 Standard dimensions and toleran
30、ces of waveguidetube shall be as specified in Table 4.10.2.2 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
31、 shall be as specified in Table 5.10.4 EccentricityThe maximum 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 Rectangula
32、rityThe adjoining faces of the tube shallbe as square in relation 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
33、not be less than 60 % of the nominal length (specific andstock), 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.TABLE 3 Hardness Require
34、mentsCopper or Copper Alloy UNS No.Rockwell Hardness,30T ScaleAC10100 30 minC10200 30 minC10300 30 minC12000 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 Dimen
35、sions, in. (mm) Inner Dimensions, in. (mm)Nominal WallThickness, in. (mm)MajorDimensionsMinorDimensionsTolerance,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.
36、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) 0.510 (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)
37、 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) 0.004 (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
38、.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 (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
39、(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 (0.15) 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
40、.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 (0.20) 0.080 (2.03)TABLE 5 Permissible Inner Corner RadiiNominal Wall Thickness, in. (mm)Permissible InnerCorner Radii, max,in. (mm)0.040 (1.02) 0.016 (0.41)0.050 (1.27) 0.032 (0.81)0.064 (1.63)
41、 0.032 (0.81)0.080 (2.03) 0.047 (1.2)TABLE 6 Eccentricity TolerancesSpecified Major OuterDimension, in. (mm)AllowableEccentricity,Amax, in. (mm)0.420 to 0.850 (10.7 to 21.6), excl 0.003 (0.08)0.850 to 2.418 (21.6 to 61.4), excl 0.004 (0.10)2.418 to 3.000 (61.4 to 76.2), excl 0.005 (0.13)3.000 to 3.5
42、60 (76.2 to 90.4), excl 0.006 (0.15)3.560 to 4.460 (90.4 to 113), excl 0.007 (0.18)4.460 to 6.660 (113 to 169), incl 0.008 (0.20)AApplicable only to those sizes of tubes shown in Table 4. See 10.2.2.TABLE 7 Length TolerancesLength, ft (m)Tolerance,Aplus in. (mm)Standard (stock) 1 (25)Specific:Up to
43、14 (4.27), incl14 (6.4)Over 14 (4.27)12 (13)AApplicable only to full-length pieces.B372 12a310.7 Squareness of CutThe departure from the squarenessof the end of any tube shall not exceed 0.010 in. (0.25 mm) fortube up to58-in. (15.9-mm) dimension, inclusive, across themeasured section, and 0.016 in.
44、/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 along 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) flatw
45、ise on the concave external surfaces. The tubeshall 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 tu
46、be shall not exceed 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 u
47、p to 4 in. (102mm) major ID and 64 in. A.A.6for tube whose major ID is 4in. 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 comp
48、ositionand 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, scale, and splint
49、ers. Scratches notmore than 0.001-in. (0.025-mm) deep, as measuredmetallographically, will be permitted in the longitudinal direc-tion of the interior surfaces for tubes 0.622 in. (15.8 mm) by0.311 in. (7.90 mm) and larger. For tubes smaller than 0.622 by0.311 in., the depth of scratches on interior surfaces shall notexceed 0.12 % of the width.11.2 Unless otherwise specified, the interior and exteriorsurfaces of the finished tube shall be bright, dry, and free ofscale or oxides.12. Sampling12.1 SamplingThe lot size, portion size, and selection ofsample pi
