ASTM B188-00
(Specification)Standard Specification for Seamless Copper Bus Pipe and Tube
Standard Specification for Seamless Copper Bus Pipe and Tube
SCOPE
1.1 This specification establishes the requirements for seamless copper bus pipe and tube intended for use as electrical conductors.
1.1.1 The product shall normally be made from one of the following coppers, as denoted in the ordering information: PreviouslyCopperUsed Desig-UNS No.nation Type of Copper C10100 OFE Oxygen-free, electronic C10200 OFOxygen-free without residual deoxidantsC10300 -Oxygen-free, extra low phosphorusC10400, C10500,C10700OFS Oxygen-free, silver bearingC11000 ETPElectrolytic tough pitchC11300, C11400,C11600STP Silver-bearing tough pitchC12000 DLPPhosphorized, low residual phosphorus
1.2 Other coppers may be agreed upon between purchaser and supplier. Unless otherwise specified, any one of the above coppers may be furnished.
1.3 The values stated in inch-pound units are the standard. The values given in parentheses are for information only.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: B 188 – 00
Standard Specification for
Seamless Copper Bus Pipe and Tube
This standard is issued under the fixed designation B 188; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope * E 8 Test Methods for Tension Testing of Metallic Materials
E 18 Test Methods for Rockwell Hardness and Rockwell
1.1 This specification establishes the requirements for seam-
Superficial Hardness of Metallic Materials
less copper bus pipe and tube intended for use as electrical
E 29 Practice for Using Significant Digits in Test Data to
conductors.
Determine Conformance with Specifications
1.1.1 The product shall normally be made from one of the
E 53 Test Methods for Determination of Copper in Unal-
following coppers, as denoted in the ordering information:
loyed Copper by Gravimetry
Previously
E 62 Test Methods for Chemical Analysis of Copper and
Copper Used Desig-
UNS No. nation Type of Copper
Copper Alloys (Photometric Methods)
E 243 Practice for Electromagnetic (Eddy-Current) Exami-
C10100 OFE Oxygen-free, electronic
nation of Copper and Copper-Alloy Tubes
C10200 OF Oxygen-free without residual deoxidants
C10300 — Oxygen-free, extra low phosphorus
E 255 Practice for Sampling Copper and Copper Alloys for
C10400, C10500, OFS Oxygen-free, silver bearing
Determination of Chemical Composition
C10700
E 527 Practice for Numbering Metals and Alloys (UNS)
C11000 ETP Electrolytic tough pitch
C11300, C11400, STP Silver-bearing tough pitch
C11600
3. Terminology
C12000 DLP Phosphorized, low residual phosphorus
3.1 Definitions:
1.2 Other coppers may be agreed upon between purchaser
3.1.1 average diameter (for round tubes only), n—the
and supplier. Unless otherwise specified, any one of the above
average of the maximum and minimum outside diameters, or
coppers may be furnished.
maximum and minimum inside diameters, whichever is appli-
1.3 The values stated in inch-pound units are the standard.
cable, as determined at any one cross section of the tube.
The values given in parentheses are for information only.
3.1.2 bus pipe or tube, n—a high-conductivity copper tubu-
lar product used as an electrical conductor.
2. Referenced Documents
3.1.3 lengths, n—straight pieces of the product.
2.1 The following documents form a part of this specifica-
3.1.3.1 lengths, ends, n—straight pieces, shorter than the
tion to the extent referenced herein:
nominal length, left over after cutting the product into mill
2.2 ASTM Standards:
lengths, stock lengths, or specific lengths. They are subject to
B 193 Test Method for Resistivity of Electrical Conductor
minimum length and maximum weight requirements.
Materials
3.1.3.2 lengths, specific, n—straight lengths that are uni-
B 428 Test Method for Angle of Twist in Rectangular and
form in length, as specified, and subject to established length
Square Copper and Copper Alloy Tube
tolerances.
B 577 Test Methods for Detection of Cuprous Oxide (Hy-
3.1.3.3 lengths, specific with ends, n—specific lengths, in-
drogen Embrittlement Susceptibility) in Copper
cluding ends.
B 601 Practice for Temper Designations for Copper and
3.1.3.4 lengths, standard, n—uniform lengths recom-
Copper Alloys—Wrought and Cast
mended in a Simplified Practice Recommendation or estab-
lished as a Commercial Standard.
This specification is under the jurisdiction of ASTM Committee B05 on Copper
3.1.3.5 lengths, stock, n—straight lengths that are mill cut
and Copper Alloys and is the direct responsibility of Subcommittee B05.04 on Pipe
and stored in advance of orders. They are usually 12 or 20 ft
and Tube.
(3.66 or 6.10 m) and subject to established length tolerances.
Current edition approved Nov. 10, 2000. Published January 2001. Originally
published as B 188 – 44 T. Last previous edition B 188 – 96.
The UNS system for copper and copper alloys (see Practice E 527) is a simple
expansion of the former standard designation system accomplished by the addition Annual Book of ASTM Standards, Vol 03.01.
of a prefix “C” and a suffix “00.” The suffix can be used to accommodate Annual Book of ASTM Standards, Vol 14.02.
composition variations of the base alloy. Annual Book of ASTM Standards, Vol 03.05.
3 8
Annual Book of ASTM Standards, Vol 02.03. Annual Book of ASTM Standards, Vol 03.03.
4 9
Annual Book of ASTM Standards, Vol 02.01. Annual Book of ASTM Standards, Vol 01.01.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
B 188
3.1.3.6 lengths, stock with ends, n—stock lengths, including 4.2.1 Bend test (Section 10),
ends. 4.2.2 Cuprous oxide test (Section 12),
3.1.4 tube, seamless, n—a tube produced with a continuous
4.2.3 Microscopical examination (Section 11),
periphery in all stages of the operations.
4.2.4 Tension testing (Section 9),
3.1.4.1 pipe, n—a seamless tube conforming to the particu-
4.2.5 Eddy-current test (Section 13),
lar nominal or standard pipe sizes, Table 1.
4.2.6 Certification (Section 23),
3.2 Definitions of Terms Specific to This Standard:
4.2.7 Mill test report (Section 24), and
3.2.1 capable of, adv—The term “capable of” as used in this
4.2.8 Special packaging, if required (Section 25).
specification means that the test need not be performed by the
producer of the material. However, should subsequent testing
5. Materials and Manufacture
by the purchaser establish that the material does not meet these
5.1 Material:
requirements, the material shall be subject to rejection.
5.1.1 The material shall be a copper of any one of the UNS
alloy numbers as included in the scope, and as so specified in
4. Ordering Information
the contract or purchase order, and shall be of such soundness
4.1 Orders for product under this specification should con-
as to be suitable for processing into lengths of pipe or tube for
tain the following information:
the intended application.
4.1.1 ASTM designation and year of issue,
5.2 Manufacture:
4.1.2 Copper UNS designation,
5.2.1 The material shall be manufactured by such hot-
4.1.3 Temper (Section 7),
working, cold-working, and annealing processing as to produce
4.1.4 Dimensions and form (Section 14),
a uniform, seamless wrought structure in the finished product.
4.1.5 Length (Section 14),
5.2.2 The manufacture shall be such that the finished
4.1.6 Total length of each size,
material conforms to the specified temper properties (see 7.1).
4.1.7 Quantity of each item,
4.2 The following options are available under this specifi-
6. Chemical Composition
cation and should be specified in the contract or purchase order
when required: 6.1 The material shall conform to the requirements in Table
A
TABLE 1 Dimensions and Weights of Copper Pipe, Nominal or Standard Pipe Sizes
Dimensions, in. (mm)
Nominal or Standard Cross-Sectional Area of Theoretical Weight, lb/ft
2 2
Pipe Size, in. Wall, in. (mm ) (kg/m)
Outside Diameter Inside Diameter Wall Thickness
Regular
⁄4 0.540(13.7) 0.376(9.55) 0.082(2.08) 0.118(0.761) 0.457(0.680)
⁄8 0.675(17.1) 0.495(12.6) 0.090(2.29) 0.165(1.06) 0.641(0.954)
⁄2 0.840(21.3) 0.626(15.9) 0.107(2.72) 0.246(1.59) 0.955(1.42)
⁄4 1.050(26.7) 0.822(20.9) 0.114(2.90) 0.335(2.16) 1.30(1.93)
1 1.315(33.4) 1.063(27.0) 0.126(3.20) 0.471(3.04) 1.82(2.71)
1 ⁄4 1.660(42.2) 1.368(34.7) 0.146(3.71) 0.694(4.48) 2.69(4.00)
1 ⁄2 1.900(48.3) 1.600(40.6) 0.150(3.81) 0.825(5.32) 3.20(4.76)
2 2.375(60.3) 2.063(52.4) 0.156(3.96) 1.09(7.03) 4.22(6.28)
2 ⁄2 2.875(73.0) 2.501(63.5) 0.187(4.75) 1.58(10.2) 6.12(9.11)
3 3.500(88.9) 3.062(77.8) 0.219(5.56) 2.26(14.6) 8.75(13.0)
3 ⁄2 4.000 (102) 3.500(88.9) 0.250(6.35) 2.95(19.0) 11.4(17.0)
4 4.500 (114) 4.000 (102) 0.250(6.35) 3.34(21.5) 12.9(19.2)
5 5.562 (141) 5.062 (129) 0.250(6.35) 4.17(26.9) 16.2(24.1)
6 6.625 (168) 6.125 (156) 0.250(6.35) 5.01(32.3) 19.4(28.9)
8 8.625 (219) 8.001 (203) 0.312(7.92) 8.15(52.6) 31.6(47.0)
10 10.750 (273) 10.020 (255) 0.365(9.27) 11.9(76.8) 46.2(68.7)
12 12.750 (324) 12.000 (305) 0.375(9.52) 14.6(94.2) 56.5(84.1)
Extra Strong
⁄4 0.540(13.7) 0.294(7.47) 0.123(3.12) 0.161(1.04) 0.625(0.930)
⁄8 0.675(17.1) 0.421(10.7) 0.127(3.23) 0.219(1.41) 0.847(1.26)
⁄2 0.840(21.3) 0.542(13.8) 0.149(3.78) 0.323(2.08) 1.25(1.86)
⁄4 1.050(26.7) 0.736(18.7) 0.157(3.99) 0.440(2.84) 1.71(2.54)
1 1.315(33.4) 0.951(24.2) 0.182(4.62) 0.648(4.18) 2.51(3.73)
1 ⁄4 1.660(42.2) 1.272(32.3) 0.194(4.93) 0.893(5.76) 3.46(5.15)
1 ⁄2 1.900(48.3) 1.494(37.9) 0.203(5.16) 1.08(6.97) 4.19(6.23)
2 2.375(60.3) 1.933(49.1) 0.221(5.61) 1.50(9.68) 5.80(8.63)
2 ⁄2 2.875(73.0) 2.315(58.8) 0.280(7.11) 2.28(14.7) 8.85(13.2)
3 3.500(88.9) 2.892(73.6) 0.304(7.72) 3.05(19.7) 11.8(17.6)
3 ⁄2 4.000 (102) 3.358(85.3) 0.321(8.15) 3.71(23.9) 14.4(21.4)
4 4.500 (114) 3.818(97.0) 0.341(8.66) 4.46(28.8) 17.3(25.7)
5 5.562 (141) 4.812 (122) 0.375(9.52) 6.11(39.4) 23.7(35.3)
6 6.625 (168) 5.751 (146) 0.437(11.1) 8.50(54.8) 32.9(49.0)
8 8.625 (219) 7.625 (194) 0.500(12.7) 12.8(82.6) 49.5(73.7)
10 10.750 (273) 9.750 (248) 0.500(12.7) 16.1(104) 62.4(92.9)
A 2
1 in. = 1 270 000 cmil.
B 188
2 for the copper UNS no. designated in the ordering informa- C10700, and C12000 shall be free of cuprous oxide as
tion. determined by Procedure A of Test Method B 577. In case of a
6.2 These composition limits do not preclude the presence dispute, a referee method in accordance with Procedure C shall
of other elements. Limits may be established and analysis be used.
required for unnamed elements by agreement between the 11.1.1 The test need not be performed except when indi-
manufacturer or supplier and purchaser. cated at the time of placing the order (see 4.2.3).
12. Hydrogen Embrittlement Susceptibility Test
7. Temper
7.1 The material shall be furnished in either the O60 (soft 12.1 It is to be expected that material designated as Copper
UNS Nos. C10100, C10200, C10300, C10400, C10500,
anneal) or H80 (hard drawn) temper as defined in Practice
B 601. The requirements are specified in Table 3. C10700, and C12000 shall be capable of passing the embrittle-
ment test of Procedure B of Test Method B 577. The actual
8. Electrical Resistivity Requirements
performance of this test is not mandatory under the terms of
8.1 The material shall conform to the maximum electrical this specification unless definitely specified in the ordering
resistivity requirements prescribed in Table 3. information. In case of a dispute, a referee method in accor-
dance with Procedure C shall be used.
9. Mechanical Properties
13. Nondestructive Testing
9.1 The product shall conform to the mechanical require-
ments prescribed in Table 3. 13.1 When specified (see 4.2.5), the product shall be tested
in the final size but may be tested before the final anneal or heat
9.1.1 Tension testing for tensile and elongation information
need not be performed except when indicated by the purchaser treatment, when these thermal treatments are required, unless
otherwise agreed upon by the manufacturer or supplier and
at the time of placing the order (see 4.2.4).
9.1.2 The tension test shall be used to resolve cases of purchaser.
13.2 Eddy-Current Test—When specified, each piece of
dispute.
1 1
9.2 All test specimens shall be tested in full size when product from ⁄8 up to and including 3 ⁄8-in. nominal outside
diameter, or 2 ⁄2-in. distance between outside parallel surfaces,
practicable. When a machined specimen becomes necessary
for any test required under this specification, enough metal shall be subjected to an eddy-current test. Testing shall follow
the procedures of Practice E 243 except for determination of
shall be suitably removed from the sample to meet the
limitations of the testing facilities. “end effect.” The product shall be passed through an eddy-
current testing unit adjusted to provide information on the
10. Bend Test Requirements
suitability of the product for the intended application.
10.1 The material shall conform to the bend testing require- 13.2.1 Notch-depth standards rounded to the nearest 0.001
ments prescribed in Table 3. in. (0.025 mm) shall be 22 % of the nominal wall thickness.
10.1.1 Bend testing need not be performed except when The notch depth tolerance shall be 60.0005 in. (0.013 mm).
indicated by the purchaser at the time of placing the order (see Alternatively, when the test is performed using speed-
4.2.4). insensitive equipment that can select a maximum imbalance
signal, a maximum imbalance signal of 0.3 % shall be used.
11. Microscopical Examination
13.2.2 Product that does not actuate the signaling device of
11.1 The test specimens of material designated as Copper the eddy-current test shall be considered as conforming to the
UNS Nos. C10100, C10200, C10300, C10400, C10500, requirements of this test. Product with discontinuities indicated
TABLE 2 Chemical Requirements
NOTE 1—If the type of silver-bearing copper is not specified (that is, whether tough-pitch, phosphorized, or oxygen-free) any one of the three types
may be supplied at the option of the manufacturer.
Composition, %
Element Copper UNS No.
A B B B C C C
C10100 C10200 C10300 C10400 C10500 C10700 C11000 C11300 C11400 C11600 C12000
D E
Copper (incl silver), min 99.99 99.95 99.95 99.95 99.95 99.95 99.90 99.90 99.90 99.90 99.90
A
Phosphorus . 0.001– . . . . . . . 0.004–
0.005 0.0012
Oxygen, max. 0.0005 0.0010 . 0.0010 0.0010 0.0010 . . . . .
A F F F F F F
Silver . . 8 10 25 . 8 10 25 .
A
Impurity maximums in ppm of C10100 shall be: antimony 4, arsenic 5, bismuth 1.0, cadmium 1, iron 10, lead 5, manganese 0.5, nickel 10, phosphorus 3, selenium
3, silver 25, sulfur 15, tellurium 2, tin 2, and zinc 1.
B
C10400, C01500, and C10700 are oxygen-free coppers with the addition of a specified amount of silver. The compositions of these alloys are equivalent to C10200
plus the intentional addition of silver.
C
C11300, C11400, C11500, and C11600 are electrolytic tough-pitch copper with silver additions. The compositions of these alloys are equivalent to C11000 plus the
intentional addition of silver.
D
Copper shall be determined by difference between “impurity total” and 100 %.
E
Copper (includes silver) + phosphorus, min.
F
Values are minimum silver in troy ounces per avoirdupois ton (1 oz/ton is equivalent to 0.0034 %).
B 188
A
TABLE 3 Mechanical and Electrical Properties
B
Electrical Resistivity max at 20°C (68°F),
Te
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