ASTM B372-97

Standard Specification for Seamless Copper and Copper-Alloy Rectangular Waveguide Tube

SCOPE
1.1 This specification covers seamless copper and copper-alloy rectangular tube intended for use as transmission lines in electronic equipment. Four types of material are specified having the following nominal compositions:  Copper or Nominal Composition, % Copper Alloy Previously Phos- UNS 2 No. Used Designation Copper Zinc phorus C10200 Copper, Type OF A 100 ... ... C10300 ... 99.99 ... 0.003 C12000 Copper, Type DLP A 100 ... ... C22000 Commercial 90 10 ... bronze, 90% A Types OF and DLP are described in Classification B 224.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

General Information

• Status: Historical
• Publication Date: 31-Dec-1996
• ICS: 77.150.30 - Copper products
• Technical Committee: B05 - Copper and Copper Alloys
• Drafting Committee: B05.04 - Pipe and Tube

Relations

• Replaced By: ASTM B372-97(2003) - Standard Specification for Seamless Copper and Copper-Alloy Rectangular Waveguide Tube
• Effective Date: 01-Oct-2003
• Referred By: ASTM F68-16 - Standard Specification for Oxygen-Free Copper in Wrought Forms for Electron Devices
• Effective Date: 01-Jan-1997

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: B 372 – 97
Standard Specification for
Seamless Copper and Copper-Alloy Rectangular Waveguide
Tube
This standard is issued under the fixed designation B 372; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope E 29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
1.1 This specification covers seamless copper and copper-
E 53 Test Methods for Chemical Analysis of Copper
alloy rectangular tube intended for use as transmission lines in
E 55 Practice for Sampling Wrought Nonferrous Metals and
electronic equipment. Four types of material are specified
Alloys for Determination of Chemical Composition
having the following nominal compositions:
E 62 Test Methods for Chemical Analysis of Copper and
Copper or Nominal Composition, %
Copper Alloys (Photometric Methods)
Copper Alloy Previously Phos-
UNS No. Used Designation Copper Zinc phorus
E 478 Test Methods for Chemical Analysis of Copper
A
C10200 Copper, Type OF 100 . .
Alloys
C10300 . 99.99 . 0.003
A
2.3 Other Standard:
C12000 Copper, Type DLP 100 . .
C22000 Commercial 90 10 .
ANSI B46.1 Surface Roughness, Waviness, and Lay
bronze, 90 %
______________
3. Terminology
A
Types OF and DLP are described in Classification B 224.
3.1 Definitions:
1.2 The values stated in inch-pound units are to be regarded
3.1.1 lengths—straight pieces of the product.
as the standard. The values given in parentheses are for
3.1.1.1 ends—straight pieces, shorter than the nominal
information only.
length, left over after cutting the product into mill lengths,
2. Referenced Documents stock lengths or specific lengths. They are subject to minimum
length and maximum weight requirements.
2.1 The following documents of the issue in effect on date
3.1.1.2 specific—straight lengths that are uniform in length,
of material purchase form a part of this specification to the
as specified, and subject to established length tolerances.
extent referenced herein:
3.1.1.3 specific with ends—specific lengths, including ends.
2.2 ASTM Standards:
3.1.1.4 stock—straight lengths that are mill cut and stored in
B 170 Specification for Oxygen-Free Electrolytic Copper—
advance of orders. They are usually 12 ft (3.66 m) and subject
Refinery Shapes
to established length tolerances.
B 193 Test Method for Resistivity of Electrical Conductor
3.1.1.5 stock with ends—stock lengths, including ends.
Materials
3.1.2 tube—a hollow product of round or any other cross
B 224 Classification of Coppers
section having a continuous periphery.
B 428 Test Method for Angle of Twist in Rectangular and
3 3.1.2.1 tube, waveguide—a tube used as transmission line to
Square Copper and Copper Alloy Tube
electronic equipment.
B 577 Test Method for Hydrogen Embrittlement of Copper
E 18 Test Methods for Rockwell Hardness and Rockwell
4. Ordering Information
Superficial Hardness of Metallic Materials
4.1 Orders for material under this specification shall include
the following information:
4.1.1 Material (Sections 1 and 6),
This specification is under the jurisdiction of ASTM Committee B05 on Copper
and Copper Alloys and is the direct responsibility of Subcommittee B05.04 on Pipe
4.1.2 Outer and inner rectangular dimensions (Section 11),
and Tube.
4.1.3 Length (see 11.6),
Current edition approved Sept. 10, 1997. Published March 1998. Originally
published as B 372 – 61. Last previous edition B 372 – 93.
The UNS system for copper and copper alloys is a simple expansion of the
former standard designation system accomplished by the addition of a prefix“ C”
and a suffix “00.” The suffix can be used to accommodate composition variations of Annual Book of ASTM Standards, Vol 14.02.
the base alloy. Annual Book of ASTM Standards, Vol 03.05.
3 8
Annual Book of ASTM Standards, Vol 02.01. Annual Book of ASTM Standards, Vol 03.06.
4 9
Annual Book of ASTM Standards, Vol 02.03. Available from the American National Standards Institute, 11 W. 42 St., 13th
Annual Book of ASTM Standards, Vol 03.01. Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
B372–97
TABLE 2 Hardness Requirements
4.1.4 Total length of each size,
4.1.5 Special packaging, if required (Section 19), Rockwell Hardness,
Copper or Copper Alloy UNS No.
A
30T Scale
4.1.6 Embrittlement test, if required (Section 9),
C10200 30 min
4.1.7 Electrical resistivity test, if required (Section 10), and
C10300 30 min
4.1.8 Special finish, if required (see 12.2).
C12000 30 min
C22000 43 to 66
5. Materials and Manufacture
A
The tube shall be split along the center line of its narrow side, and Rockwell
5.1 The material shall be of such quality and purity that the hardness readings then taken on its inner surface.
finished product shall have the properties and characteristics
prescribed in this specification, and shall be cold drawn to size.
B of Test Method B 577. The actual performance of this test is
5.2 The copper will normally be of the types given in Table
not mandatory under the terms of this specification unless
1, but may be of such other types as may be agreed upon
definitely specified in the ordering information. In case of a
between the manufacturer or supplier, and the purchaser.
dispute, a referee method in accordance with Procedure C shall
5.3 The copper and copper-alloy tubes shall be finished by
be employed.
such cold-working and annealing operations as are necessary to
meet the required properties.
10. Electrical Resistivity
10.1 It is to be expected that samples of Copper UNS Nos.
6. Chemical Composition
C10200, C10300, and C12000 covered by this specification
6.1 The material shall conform to the chemical requirements
will conform to the following electrical resistivity require-
specified in Table 1.
ments, although actual determination of this property is not
6.2 These specification limits do not preclude the presence
mandatory under the terms of this specification unless defi-
of other elements. Limits for unnamed elements may be
nitely specified. The electrical resistivity of representative
established by agreement between manufacturer or supplier
samples of Copper UNS No. C10200 shall not exceed 0.15737
and purchaser.
V·g/m and Copper UNS No. C10300 shall not exceed 0.15940
6.3 For copper alloys in which zinc is specified as the
V·g/m and Copper UNS No. C12000 shall not exceed 0.17418
remainder, either copper or zinc may be taken as the difference
V·g/m when tested at 68°F (20°C).
between the sum of all the elements analyzed and 100 %.
6.3.1 Alloy C22000—When all the elements in Table 1 are
NOTE 1—The International Annealed Copper Standard electrical con-
analyzed, their sum shall be 99.8 % minimum. ductivity equivalents are as follows:
Electrical Resisitivity, Conductivity,
7. Rockwell Hardness
V·g/m %
0.15176 101.00
7.1 The material shall conform to the Rockwell hardness
0.15328 100.00
requirements prescribed in Table 2. 0.15614 98.16
0.15737 97.40
0.15940 96.16
8. Microscopical Examination
0.17031 90
8.1 The test specimens of Copper UNS Nos. C10200,
0.17418 88
C10300, and C12000 shall be free of cuprous oxide as
11. Dimensions and Permissible Variations
determined by Procedure A of Test Method B 577. In case of a
dispute, a referee method in accordance with Procedure C shall 11.1 General:
be employed. 11.1.1 The standard method of specifying, ordering, and
measuring rectangular waveguide tube shall be major by minor
9. Embrittlement Test
outer dimension and major by minor inner dimension.
9.1 It is to be expected that samples of Copper UNS Nos. 11.1.2 All cross-sectional measurements shall be made at
C10200, C10300, and C12000 covered by this specification
the corners at a point at least ⁄2in. (12.7 mm) from the ends.
shall be capable of passing the embrittlement test of Procedure 11.1.3 For the purpose of determining conformance with the
dimensional requirements prescribed in this specification, any
measured value outside the specified limiting values for any
TABLE 1 Chemical Requirements
dimension may be cause for rejection.
Composition, %
11.2 Dimensional Tolerances:
Copper
Copper UNS Nos.
Element
11.2.1 Standard dimensions and tolerances of waveguide
Alloy
UNS No.
A tube shall be as specified in Table 3.
C10200 C10300 C12000
C22000
11.2.2 Other dimensions and tolerances shall be subject to
B
Copper 99.95 min . 99.90 min 89.0–91.0
agreement between the manufacturer or supplier and the
B
Copper, + phos- . 99.95 . .
purchaser.
phorus, min
Phosphorus . 0.001–0.005 0.004–0.012 .
11.3 Corner Radii—Outer corner radii shall be 0.015 in.
Zinc . . . remainder
(0.381 mm) min and 0.032 in. (0.813 mm) max. Maximum
Lead, max . . . 0.05
inner corner radii shall be as specified in Table 4.
Iron, max . . . 0.05
11.4 Eccentricity—The maximum allowable eccentricity,
A
Oxygen in C10200 shall be 10 ppm max.
B
Silver counting as copper. defined as one-half the difference between the maximum and
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
B372–97
TABLE 3 Dimensional Tolerances
Outer Dimensions, in. (mm) Inner Dimensions, in. (mm)
Nominal Wall
Tolerance,
Major Minor Major Minor Tolerance, plus and
Thickness, in. (mm)
plus and
Dimensions Dimensions Dimensions Dimensions minus
minus
0.420 (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) 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 (0.10) 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 (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 (0.15) 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 (0.20) 0.080 (2.03)
TABLE 4 Permissible Inner Corner Radii TABLE 6 Length Tolerances
A
Permissible Inner Tolerance,
Length, ft (m)
Nominal Wall Thickness, in. (mm) Corner Radii, max, plus in. (mm)
in. (mm)
Standard (stock) 1 (25)
0.040 (1.02) 0.016 (0.41) Specific:
0.050 (1.27) 0.032 (0.81) Up to 14 (4.27), incl ⁄4(6.4)
0.064 (1.63) 0.032 (0.81) Over 14 (4.27) ⁄2(13)
0.080 (2.03) 0.047 (1.2)
A
Applicable only to full-length pieces.
11.7 Squareness of Cut—The departure from the squareness
minimum opposite wall thicknesses as measured at any cross
of the end of any tube shall not exceed 0.010 in. (0.25 mm) for
section perpendicular to the longitudinal axis, shall be in
tube up to ⁄8-in. (15.9-mm) dimension, inclusive, across the
accordance with Table 5.
measured section, and 0.016 in./in. (0.41 mm/mm) of distance
11.5 Rectangularity—The adjoining faces of the tube shall
between parallel surfaces for tube over ⁄8-in. dimension across
be as square in relation to each other as the best mill practice
the measured section.
will permit.
11.8 Straightness—The maximum curvature (depth of arc)
11.6 Length—Unless otherwise specified, waveguide tube
measured along any 2-ft (0.610-m) portion of the total length
shall be furnished in 12-ft (3.66-m) standard (stock) straight
shall not exceed 0.010 in. (0.25 mm) edgewise and 0.020 in.
lengths with ends. The shortest permissible length of the ends
(0.51 mm) flatwise on the concave external surfaces. The tube
shall not be less than 60 % of the nominal length (specific and
shall be so positioned during measurement that gravity will not
stock), and the maximum permissible weight of ends shall not
tend to increase the amount of bow. The edgewise and flatwise
exceed 25 % of the lot weight. Waveguide tube, ordered to
bow shall be determined by using a suitable straightedge.
specific or stock lengths, with or without ends, shall conform to
11.9 Twist—The maximum twist about the longitudinal axis
the tolerances prescribed in Table 6.
of the finished tube shall not exceed 1 °/ft of length on the face
of any surface, inside or outside. Determination of twist shall
TABLE 5 Eccentricity Tolerances
be in accordance with Test Method B 428.
11.10 Surface Roughness—The average interior surface
Allowable
Specified Major Outer
A
Eccentricity,
roughness of the finished tube, in accordance with ANSI
Dimension, in. (mm)
max, in. (mm)
B46.1, shall not exceed 32 μin. A.A. for tube up to 4 in. (102
0.420 to 0.850 (10.7 to 21.6), excl 0.003 (0.08) 10
mm) major ID and 64 μin. A.A. for tube whose major ID is
0.850 to 2.418 (21.6 to 61.4), excl 0.004 (0.10)
4 in. or over.
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)
A 10
Applicable only to those sizes of tubes shown in Table 3. See 11.2.2. The symbol “A.A.” stands for arithmetic average.
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
B372–97
12. Workmanship, Finish, and Appearance 14.1.1.3 Due to the discontinuous nature of the processing
of castings into wrought products, it is not practical to identify
12.1 The material shall be free of defects of a nature that
specific casting analysis with a specific quantity of finishe
...