ASTM B188 - 15e1
Standard Specification for Seamless Copper Bus Pipe and Tube
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Abstract
This specification covers seamless copper bus pipe and tube intended for use as electrical conductors. The material shall be manufactured by such hot-working, cold-working, and annealing processing as to produce a uniform, seamless wrought structure in the finished product. The method of manufacture shall be such that the finished material conforms to the specified temper properties. The material shall conform to the requirements for the copper UNS no. as specified. The material shall be furnished in either the O60 (soft anneal) or H80 (hard drawn) temper. The material shall conform to the maximum electrical resistivity requirements prescribed. The product shall conform to the prescribed mechanical property requirements. The product shall conform to the prescribed bend testing requirements. The test specimens of material designated as Copper UNS Nos. C10100, C10200, C10300, C10400, C10500, C10700, and C12000 shall be free of cuprous oxide. When tested, material designated as Copper UNS nos. C10100, C10200, C10300, C10400, C10500, C10700, and C12000 shall pass the embrittlement test. The product shall be passed through an eddy-current testing unit adjusted to provide information on the suitability of the product for the intended application.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
Significance and Use
18.1 For purposes of determining compliance with the specified limits for requirements of the properties listed in the following table, an observed value or a calculated value shall be rounded as indicated in accordance with the rounding method of Practice E29.
| Property | Rounded Unit for Calculated |
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| Chemical composition | nearest unit in the last right-hand place of figures |
| Hardness |
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| Electrical resistivity | nearest unit in the last right-hand place of figures |
| Electrical conductivity | |
| Tensile strength | nearest ksi (5 MPa) |
| Elongation: below 5 % | nearest multiple of 0.5 % |
| 5 % and over | nearest 1 % |
1. 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 be made from one of the following coppers, as denoted in the ordering information:2
| Copper | Previously | Type of Copper |
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| 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 |
| C11000 | ETP | Electrolytic tough pitch |
| C11300, C11400, | STP | Silver-bearing tough pitch |
| C12000 | DLP | Phosphorized, low residual phosphorus |
1.2 Unless otherwise specified, any one of the above coppers may be furnished.
1.3 Units—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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
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
E8/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
E62 Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods)
E243 Practice for Electromagnetic (Eddy Current) Examination of Copper and Copper-Alloy Tubes
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)
ICS Code
ICS Number Code 77.150.30 (Copper products)
UNSPSC Code
UNSPSC Code 40182000(Seamless copper tubes); 40171511(Commercial copper pipe)
Referencing This Standard
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DOI: 10.1520/B0188-15E01
Citation Format
ASTM B188-15e1, Standard Specification for Seamless Copper Bus Pipe and Tube, ASTM International, West Conshohocken, PA, 2015, www.astm.org
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