ASTM B188-15

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B188 − 10 B188 − 15
Standard Specification for
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Seamless Copper Bus Pipe and Tube
This standard is issued under the fixed designation B188; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This specification establishes the requirements for seamless copper bus pipe and tube intended for use as electrical
conductors.
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1.1.1 The product shall be made from one of the following coppers, as denoted in the ordering information:
Previously
Copper
Used Type of Copper
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UNS No.
Designation
Previously
Copper Used Desig-
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UNS No. nation Type of Copper
C10100 OFE Oxygen-free, electronic
C10200 OF Oxygen-free without residual deoxidants
C10300 — Oxygen-free, extra low phosphorus
C10400, C10500, OFS Oxygen-free, silver bearing
C10700
C11000 ETP Electrolytic tough pitch
C11300, C11400, STP Silver-bearing tough pitch
C11600
C12000 DLP Phosphorized, low residual phosphorus
1.2 Unless otherwise specified, any one of the above coppers may be furnished.
1.3 Units—Values The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are
mathematical conversions to SI units, which are provided for information only and are not considered standard.
2. Referenced Documents
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2.1 ASTM Standards:
B193 Test Method for Resistivity of Electrical Conductor Materials
B428 Test Method for Angle of Twist in Rectangular and Square Copper and Copper Alloy Tube
B577 Test Methods for Detection of Cuprous Oxide (Hydrogen Embrittlement Susceptibility) in Copper
B601 Classification for Temper Designations for Copper and Copper Alloys—Wrought and Cast
B846 Terminology for Copper and Copper Alloys
E8E8/E8M Test Methods for Tension Testing of Metallic Materials
E18 Test Methods for Rockwell Hardness of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E53 Test Method for Determination of Copper in Unalloyed Copper by Gravimetry
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E62 Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods) (Withdrawn 2010)
E243 Practice for Electromagnetic (Eddy Current) Examination of Copper and Copper-Alloy Tubes
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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 and
Tube.
Current edition approved Oct. 1, 2010May 1, 2015. Published November 2010June 2015. Originally approved in 1944. Last previous edition approved in 20092010 as
B188 – 09.B188 – 10. DOI: 10.1520/B0188-10.10.1520/B0188-15.
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The UNS system for copper and copper alloys (see Practice E527) 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 the base alloy.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
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The last approved version of this historical standard is referenced on www.astm.org.
*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. United States
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B188 − 15
E255 Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
3. Terminology
3.1 For definitions of terms related to copper and copper alloys, refer to Terminology B846.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 bus pipe or tube—a high conductivity copper tubular product used as an electrical conductor.
4. Ordering Information
4.1 Include the following information specified choices when placing orders for product under this specification, as applicable:
4.1.1 ASTM designation and year of issue,
4.1.2 Copper UNS designation (1.1.1 and 1.2),
4.1.3 Temper (Section 7),
4.1.4 Dimensions and form (Section 12),
4.1.5 Length (Section 12),
4.1.6 Quantity–total weight or total length or numb
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