ASTM B188-15e1 - 1.5.2015
 
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
or Observed Value

 

 Chemical composition

nearest unit in the last right-hand place of figures
  of the specified limit

 Hardness

 

 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
UNS No.2

Previously
Used
Designation

Type of Copper

 

 

  C10100

 OFE

Oxygen-free, electronic

  C10200

OF

Oxygen-free without residual deoxidants

  C10300

—

Oxygen-free, extra low phosphorus

  C10400, C10500,
   C10700

 OFS

Oxygen-free, silver bearing

  C11000

 ETP

Electrolytic tough pitch

  C11300, C11400,
   C11600

 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

E527-23

Standard Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)

E255-23

Standard Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition

E243-24

Standard Practice for Electromagnetic (Eddy Current) Examination of Copper and Copper-Alloy Tubes

E62-89(1996)

Standard Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods)

E53-07

Standard Test Method for Determination of Copper in Unalloyed Copper by Gravimetry

E18-25

Standard Test Methods for Rockwell Hardness of Metallic Materials

E8/E8M-25

Standard Test Methods for Tension Testing of Metallic Materials

B846-24

Standard Terminology for Copper and Copper Alloys

B601-24

Standard Classification for Temper Designations for Copper and Copper Alloys—Wrought and Cast

B577-24

Standard Test Methods for Detection of Cuprous Oxide (Hydrogen Embrittlement Susceptibility) in Copper

B428-24

Standard Test Method for Angle of Twist in Rectangular and Square Copper and Copper Alloy Tube

B193-25

Standard Test Method for Resistivity of Electrical Conductor Materials

E29-22

Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications