1、Designation: B 372 97 (Reapproved 2003)Standard Specification forSeamless Copper and Copper-Alloy Rectangular WaveguideTube1This standard is issued under the fixed designation B 372; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision,
2、the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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. Scope1.1 This specification cover
3、s seamless copper and copper-alloy rectangular tube intended for use as transmission lines inelectronic equipment. Four types of material are specifiedhaving the following nominal compositions:2Copper orCopper AlloyUNS2No.PreviouslyUsed DesignationNominal Composition, %Copper ZincPhos-phorusC10200 C
4、opper, Type OFA100 . .C10300 . 99.99 . 0.003C12000 Copper, Type DLPA100 . .C22000 Commercialbronze, 90 %90 10 ._ATypes OF and DLP are described in Classification B 224.1.2 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation only
5、.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:3B 170 Specification for Oxygen-Free Electrolytic CopperRefinery ShapesB 193 Test Method for Resistivity of Elect
6、rical ConductorMaterialsB 224 Classification of CoppersB 428 Test Method for Angle of Twist in Rectangular andSquare Copper and Copper Alloy TubeB 577 Test Methods for Detection of Cuprous Oxide (Hy-drogen Embrittlement Susceptibility) in CopperE 18 Test Methods for Rockwell Hardness and RockwellSup
7、erficial Hardness of Metallic MaterialsE 29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE 53 Test Methods for Determination of Copper in Unal-loyed Copper by GravimetryE 62 Test Methods for Chemical Analysis of Copper andCopper Alloys (Photometric Me
8、thods)E 255 Practice for Sampling Copper and Copper Alloys forthe Determination of Chemical CompositionE 478 Test Methods for Chemical Analysis of CopperAlloys2.3 Other Standard:ANSI B46.1 Surface Roughness, Waviness, and Lay43. Terminology3.1 Definitions:3.1.1 lengthsstraight pieces of the product.
9、3.1.1.1 endsstraight pieces, shorter than the nominallength, left over after cutting the product into mill lengths,stock lengths or specific lengths. They are subject to minimumlength and maximum weight requirements.3.1.1.2 specificstraight lengths that are uniform in length,as specified, and subjec
10、t to established length tolerances.3.1.1.3 specific with endsspecific lengths, including ends.3.1.1.4 stockstraight lengths that are mill cut and stored inadvance of orders. They are usually 12 ft (3.66 m) and subjectto established length tolerances.3.1.1.5 stock with endsstock lengths, including en
11、ds.3.1.2 tubea hollow product of round or any other crosssection having a continuous periphery.3.1.2.1 tube, waveguidea tube used as transmission line toelectronic equipment.4. Ordering Information4.1 Orders for material under this specification shall includethe following information:1This specifica
12、tion is under the jurisdiction of ASTM Committee B05 on Copperand Copper Alloys and is the direct responsibility of Subcommittee B05.04 on Pipeand Tube.Current edition approved Oct. 1, 2003. Published November 2003. Originallyapproved in 1961. Last previous edition approved in 1997 as B 372 97.2The
13、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.4Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.1Copyright
15、 ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.1.1 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 1
16、9),4.1.6 Embrittlement test, if required (Section 9),4.1.7 Electrical resistivity test, if required (Section 10), and4.1.8 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 ch
17、aracteristicsprescribed in this specification, and shall be cold drawn to size.5.2 The copper will normally 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 fini
18、shed bysuch cold-working and annealing operations as are necessary tomeet the required properties.6. Chemical 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 el
19、ements may beestablished by agreement between manufacturer or supplierand purchaser.6.3 For copper alloys 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
20、Table 1 areanalyzed, their sum shall be 99.8 % minimum.7. Rockwell Hardness7.1 The material shall conform to the Rockwell hardnessrequirements prescribed in Table 2.8. Microscopical Examination8.1 The test specimens of Copper UNS Nos. C10200,C10300, and C12000 shall be free of cuprous oxide asdeterm
21、ined by Procedure A of Test Methods B 577. In case ofa dispute, a referee method in accordance with Procedure Cshall be employed.9. Embrittlement Test9.1 It is to be expected that samples of Copper UNS Nos.C10200, C10300, and C12000 covered by this specificationshall be capable of passing the embrit
22、tlement test of ProcedureB of Test Methods B 577. The actual performance of this testis not mandatory under the terms of this specification unlessdefinitely specified in the ordering information. In case of adispute, a referee method in accordance with Procedure C shallbe employed.10. Electrical Res
23、istivity10.1 It is to be expected that samples of Copper UNS Nos.C10200, C10300, and C12000 covered by this specificationwill conform to the following electrical resistivity require-ments, although actual determination of this property is notmandatory under the terms of this specification unless def
24、i-nitely specified. The electrical resistivity of representativesamples of Copper UNS No. C10200 shall not exceed 0.15737Vg/m2and Copper UNS No. C10300 shall not exceed 0.15940Vg/m2and Copper UNS No. C12000 shall not exceed 0.17418Vg/m2when tested at 68F (20C).NOTE 1The International Annealed Copper
25、 Standard electrical con-ductivity equivalents are as follows:Electrical Resisitivity,Vg/m2Conductivity,%0.15176 101.000.15328 100.000.15614 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, an
26、dmeasuring rectangular waveguide tube 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
27、requirements prescribed in this specification, 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 toler
28、ances shall be subject toagreement between the manufacturer or supplier and thepurchaser.TABLE 1 Chemical RequirementsElementComposition, %Copper UNS Nos.CopperAlloyUNS No.C22000C10200AC10300 C12000CopperB99.95 min . 99.90 min 89.091.0Copper,B+ phos- . 99.95 . .phorus, minPhosphorus . 0.0010.005 0.0
29、040.012 .Zinc . . . remainderLead, max . . . 0.05Iron, max . . . 0.05AOxygen in C10200 shall be 10 ppm max.BSilver counting as copper.TABLE 2 Hardness RequirementsCopper or Copper Alloy UNS No.Rockwell Hardness,30T ScaleAC10200 30 minC10300 30 minC12000 30 minC22000 43 to 66AThe tube shall be split
30、along the center line of its narrow side, and Rockwellhardness readings then taken on its inner surface.B 372 97 (2003)211.3 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 m
31、aximum 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 5.11.5 RectangularityThe adjoining faces of the tube shallbe as square in
32、 relation to each other as the best mill practicewill permit.11.6 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 an
33、dstock), 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 6.11.7 Squareness of CutThe departure from the squarenessof the end of any tube sh
34、all 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.11.8 StraightnessThe maximum curvature (depth of arc)measure
35、d 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) 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 flatwisebo
36、w shall be determined by using a suitable straightedge.11.9 TwistThe maximum twist 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)MajorDimensi
37、onsMinorDimensionsTolerance,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
38、.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) 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
39、(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) 0.064 (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.
40、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 (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
41、.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) 2.550 (64.8) 0.008 (0.20) 0.080 (2.03)6.660 (169) 3.410 (86.6) 0.008 (0.20) 6.500 (165
42、) 3.250 (82.6) 0.008 (0.20) 0.080 (2.03)TABLE 4 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) 0.032 (0.81)0.080 (2.03) 0.047 (1.2)TABLE 5 Eccentricity TolerancesSpecified Major O
43、uterDimension, 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 3.560 (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.
44、460 to 6.660 (113 to 169), incl 0.008 (0.20)AApplicable only to those sizes of tubes 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.B
45、372 97 (2003)3of any surface, inside or outside. Determination of twist shallbe in accordance with Test Method B 428.11.10 Surface RoughnessThe average interior surfaceroughness of the finished tube, in accordance with ANSIB46.1, shall not exceed 32 in. A.A.5for tube up to 4 in. (102mm) major ID and
46、 64 in. A.A.5for tube whose major ID is 4in. or over.12. Workmanship, Finish, and Appearance12.1 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 en
47、d, and shall be free ofinternal or external mechanical imperfections in accordancewith good 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 mea
48、sured metallographically,will be permitted in the longitudinal direction of the interiorsurfaces 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 other
49、wise specified, the interior and exteriorsurfaces of the finished tube shall be bright, dry, 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 piece
