ASTM B231/B231M-99 - 10.4.1999
 
1. Scope

1.1 This specification covers aluminum 1350-H19 (extra hard), 1350-H16 or -H26 ( 3/4 hard), 1350-H14 or -H24 (1/2 hard), and 1350-H142 or -H242 (1/2 hard), bare concentric-lay-stranded conductors constructed with a straight round central wire surrounded by one or more layers of helically layed wires. The conductors are for general use for electrical purposes (Explanatory Notes 1 and 2).

1.2 The SI values for resistivity are regarded as standard. For all other properties the inch-pound units are regarded as standard and the SI units may be approximate.

Note 1-Prior to 1975, aluminum 1350 was designated as EC aluminum. Note 2-The aluminum and temper designations conform to ANSI Standard H35.1. Aluminum 1350 corresponds to Unified Numbering System A91350 in accordance with Practice E527. Note 3-A complete metric companion to Specification B231 has been developed-Specification B231M. Note 4-Sealed conductors that are intended to prevent longitudinal water propagation and are further covered/insulated are also permitted within the guidelines of this specification.
 
2. Referenced Documents

B609/B609M-12(2021)

Standard Specification for Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrical Purposes

B230/B230M-22

Standard Specification for Aluminum 1350–H19 Wire for Electrical Purposes

B354-23

Standard Terminology Relating to Uninsulated Metallic Electrical Conductors

E29-22

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

E527-23

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

ANSI H35.1

B193-25

Standard Test Method for Resistivity of Electrical Conductor Materials

B263-04

Standard Test Method for Determination of Cross-Sectional Area of Stranded Conductors

B682-01(2024)

Standard Specification for Standard Metric Sizes of Electrical Conductors

Publication 50

Code Words for Overhead Aluminum Electrical Conductors

American National Standard Alloy and Temper Designation Systems for Aluminum [Metric]

NBS

Handbook 100Copper Wire Tables