1、Designation: B372 11Standard 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 Department of Defense.1. Scope*1.1 This specification establishes the requireme
3、nts 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-phorus
4、C10100 Copper, Type OFEA99.99 .C10200 Copper, Type OFA99.95 . .C10300 Copper, Type OFXLPA99.95 . 0.003C12000 Copper, Type DLPA99.90 . 0.008C22000 Commercialbronze, 90 %90 10 ._ATypes OF, OFE, OFXLP, and DLP are described in Classification B224.1.2 The values stated in inch-pound units are to be rega
5、rdedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.2. Referenced Documents2.1 The following documents of the issue in effect on dateof material purchase form a part of this specification to th
6、eextent 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 Copper and Copper Alloy TubeB
7、577 Test Methods for Detection of Cuprous Oxide (Hy-drogen 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 Conformance with Specificatio
8、nsE53 Test Method for Determination of Copper in UnalloyedCopper by GravimetryE62 Test Methods for Chemical Analysis of Copper andCopper Alloys (Photometric Methods)4E255 Practice for Sampling Copper and Copper Alloys forthe Determination of Chemical CompositionE478 Test Methods for ChemicalAnalysis
9、 of CopperAlloys2.3 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 Orders for material under this specification shall includethe following information:4
10、.1.1 Material (Sections 1 and 6),4.1.2 Outer and inner rectangular dimensions (Section 11),4.1.3 Length (see 11.6),4.1.4 Total length of each size,4.1.5 Special packaging, if required (Section 19),4.1.6 Embrittlement test, if required (Section 9),4.1.7 Electrical resistivity test, if required (Secti
11、on 10), and1This 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 April 1, 2011. Published May 2011. Originallyapproved in 1961. Last previous edition approved in 2
12、003 as B372 97 (2003).DOI: 10.1520/B0372-11.2The 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 re
13、ferenced 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.4Withdrawn. The last approved version of this historical standard is
14、 referencedon www.astm.org.5Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.1*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,
15、 United States.4.1.8 Special finish, if required (see 12.2).5. Materials and Manufacture5.1 The material shall be of such quality and purity that thefinished product shall have the properties and characteristicsprescribed in this specification, and shall be cold drawn to size.5.2 The copper will nor
16、mally be of the types given in Table1, but may be of such other types as may be agreed uponbetween the manufacturer or supplier, and the purchaser.5.3 The copper and copper-alloy tubes shall be finished bysuch cold-working and annealing operations as are necessary tomeet the required properties.6. C
17、hemical Composition6.1 The material shall conform to the chemical requirementsspecified in Table 1.6.2 These specification limits do not preclude the presenceof other elements. Limits for unnamed elements may beestablished by agreement between manufacturer or supplierand purchaser.6.3 For copper all
18、oys in which zinc is specified as theremainder, either copper or zinc may be taken as the differencebetween the sum of all the elements analyzed and 100 %.6.3.1 Alloy C22000When all the elements in Table 1 areanalyzed, their sum shall be 99.8 % minimum.7. Rockwell Hardness7.1 The material shall conf
19、orm to the Rockwell hardnessrequirements prescribed in Table 2.8. Microscopical Examination8.1 The test specimens 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
20、with Procedure Cshall be employed.9. Embrittlement Test9.1 It is to be expected that samples of Copper UNS Nos.C10100, C10200, C10300, and C12000 covered by this speci-fication shall be capable of passing the embrittlement test ofProcedure B of Test Methods B577. The actual performance ofthis test i
21、s not mandatory under the terms of this specificationunless definitely specified in the ordering information. In caseof a dispute, a referee method in accordance with Procedure Cshall be employed.10. Electrical Resistivity10.1 It is to be expected that samples of Copper UNS Nos.C10100, C10200, C1030
22、0, and C12000 covered by this speci-fication will conform to the following electrical resistivityrequirements, although actual determination of this property isnot mandatory under the terms of this specification unlessdefinitely specified. The electrical resistivity of representativesamples of Coppe
23、r UNS No. C10100, shall not exceed 0.15585Vg/m2, C10200 shall not exceed 0.15737 Vg/m2and CopperUNS No. C10300 shall not exceed 0.15940 Vg/m2and CopperUNS No. C12000 shall not exceed 0.17418 Vg/m2whentested at 68F (20C).NOTE 1The International Annealed Copper Standard electrical con-ductivity equiva
24、lents are as follows:Electrical Resisitivity,Vg/m2Conductivity,%0.15176 101.000.15328 100.000.155850.15614 98.160.15737 97.400.15940 96.160.17031 900.17418 8811. Dimensions and Permissible Variations11.1 General:11.1.1 The standard method of specifying, ordering, andmeasuring rectangular waveguide t
25、ube shall be major by minorouter dimension and major by minor inner dimension.11.1.2 All cross-sectional measurements shall be made atthe corners at a point at least12 in. (12.7 mm) from the ends.11.1.3 For the purpose of determining conformance with thedimensional requirements prescribed in this sp
26、ecification, anymeasured value outside the specified limiting values for anydimension may be cause for rejection.11.2 Dimensional Tolerances:11.2.1 Standard dimensions and tolerances of waveguidetube shall be as specified in Table 3.11.2.2 Other dimensions and tolerances shall be subject toagreement
27、 between the manufacturer or supplier and thepurchaser.TABLE 1 Chemical RequirementsElementComposition, %Copper UNS Nos.CopperAlloyUNSNo.C22000C10100AC10200BC10300 C12000CopperC99.99min99.95min. 99.90min89.091.0Copper,C+ phos- . . 99.95 . .phorus,minPhosphorus 0.0003max. 0.0010.0050.0040.012.Zinc 0.
28、0001max. . . remainderLead, max 0.0005 . . . 0.05Iron, max 0.0010 . . . 0.05AThe following additional impurity maximum 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
29、shall be 10 ppm max.CSilver counting as copper.TABLE 2 Hardness RequirementsCopper 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 th
30、en taken on its inner surface.B372 11211.3 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 4.11.4 EccentricityThe maximum allowable eccentricity,defined as one-half the difference between the maxim
31、um andminimum opposite wall thicknesses as measured at any crosssection perpendicular to the longitudinal axis, shall be inaccordance with Table 5.11.5 RectangularityThe adjoining faces of the tube shallbe as square in relation to each other as the best mill practicewill permit.11.6 LengthUnless oth
32、erwise 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 andstock), and the maximum permissible weight of ends shall notexceed 25 % of the lo
33、t weight. Waveguide tube, ordered tospecific or stock lengths, with or without ends, shall conform tothe tolerances prescribed in Table 6.11.7 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, inclus
34、ive, across themeasured section, and 0.016 in./in. (0.41 mm/mm) of distancebetween parallel surfaces for tube over58-in. dimension acrossthe measured section.11.8 StraightnessThe maximum curvature (depth of arc)measured along any 2-ft (0.610-m) portion of the total lengthshall not exceed 0.010 in. (
35、0.25 mm) edgewise and 0.020 in.(0.51 mm) flatwise 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.11.9 TwistThe maximum twist
36、 about the longitudinal axisof the finished tube shall not exceed 1/ft of length on the faceTABLE 3 Dimensional TolerancesOuter Dimensions, in. (mm) Inner Dimensions, in. (mm)Nominal WallThickness, in. (mm)MajorDimensionsMinorDimensionsTolerance,plus andminusMajorDimensionsMinorDimensionsTolerance,
37、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) 0.510 (13.0) 0.255 (6.48) 0.002 (0.051) 0.040 (1.02)0.702 (17.8
38、) 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) 0.004 (0.010) 0.050 (1.27)1.250 (31.8) 0.625 (15.9) 0.004 (0.1
39、0) 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 (50.8) 1.000 (25.4) 0.005 (0.13) 1.872 (47.5) 0.872 (22.1) 0
40、.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 (0.15) 3.400 (86.4) 1.700 (43.2) 0.006 (0.15) 0.080 (2.03)4.460
41、(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 (0.20) 0.080 (2.03)TABLE 4 Permissible Inner Corner RadiiNomi
42、nal 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) 0.032 (0.81)0.080 (2.03) 0.047 (1.2)TABLE 5 Eccentricity TolerancesSpecified Major OuterDimension, in. (mm)AllowableEccentricity,Amax, in. (mm)0.420 to 0.850 (10.7 to
43、 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 3.560 (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 tub
44、es shown in Table 3. See 11.2.2.TABLE 6 Length TolerancesLength, ft (m)Tolerance,Aplus in. (mm)Standard (stock) 1 (25)Specific:Up to 14 (4.27), incl14 (6.4)Over 14 (4.27)12 (13)AApplicable only to full-length pieces.B372 113of any surface, inside or outside. Determination of twist shallbe in accorda
45、nce with Test Method B428.11.10 Surface RoughnessThe average interior surfaceroughness of the finished tube, in accordance withANSI B46.1, shall not exceed 32 in. A.A.6for tube up to 4 in.(102 mm) major ID and 64 in. A.A.6for tube whose major IDis 4 in. or over.12. Workmanship, Finish, and Appearanc
46、e12.1 The material shall be free of defects of a nature thatinterfere with normal commercial applications. The finishedtube shall be uniform in composition and wall thickness,straight and smooth from end to end, and shall be free ofinternal or external mechanical imperfections in accordancewith good
47、 commercial practice. In addition, the interior surfaceof the tube shall be free of burrs, plug marks, chatter marks,dirt, grease, scale, and splinters. Scratches not more than0.001-in. (0.025-mm) deep, as measured metallographically,will be permitted in the longitudinal direction of the interiorsur
48、faces for tubes 0.622 in. (15.8 mm) by 0.311 in. (7.90 mm)and larger. For tubes smaller than 0.622 by 0.311 in., the depthof scratches on interior surfaces shall not exceed 0.12 % of thewidth.12.2 Unless otherwise specified, the interior and exteriorsurfaces of the finished tube shall be bright, dry
49、, and free ofscale or oxides.13. Sampling13.1 SamplingThe lot size, portion size, and selection ofpieces shall be as follows:13.1.1 Lot SizeThe lot size shall be 5000 lb (2270 kg) orfraction thereof.13.1.2 Portion SizeSample pieces for purpose of testsshall be taken from each lot according to the followingschedule:Number of Pieces in Lot Number of Sample Pieces to be Taken1to50 151 to 200 2201 to 1500 3Over 1500 0.2 % of total number of pieces in the lot, butnot over 10 samples.14. Number of Tests and Retests14.1 Chemical AnalysisSam
