Aluminum 1350-H19 Wire for Electrical Purposes

B230/B230M- 07: Standard Specification for Aluminum 1350-H19 Wire for Electrical Purposes

For engineers and designers working with electrical conductors, ensuring the integrity and performance of materials is paramount. The ASTM B230/B230M- 07 standard provides an essential framework for specifying and procuring high-quality aluminum wire, forming the backbone of many critical electrical infrastructure projects. Understanding this authoritative document is key to successful material selection and application.

What is B230/B230M- 07?

This comprehensive ASTM standard defines the material, mechanical, and electrical properties for aluminum 1350 wire in the extra-hard (H19) temper, specifically intended for electrical applications. Developed by ASTM Committee B01 on Electrical Conductors, its primary purpose is to ensure consistency and reliability in the manufacturing and performance of this vital electrical conductor material.

Scope & Purpose

The scope of B230/B230M- 07 encompasses the requirements for round aluminum 1350-H19 wire used in electrical conductors. It specifies acceptable limits for tensile strength, elongation, resistivity, diameter tolerances, and workmanship. The standard does not cover aluminum wire in other tempers or alloys, nor does it detail the design or construction of the final electrical conductors themselves. Material must originate from drawing stock meeting the requirements of Specification B233.

Who Must Comply?

• • Primary audience: Materials Engineers, Electrical Engineers, Quality Control Inspectors, and Manufacturing Technicians involved in wire and cable production or procurement.
• • Industries affected: Electrical Power Transmission and Distribution, Telecommunications, Manufacturing (specifically Wire & Cable), and any sector utilizing aluminum electrical conductors.
• • Compliance nature: While primarily a voluntary industry standard, compliance is often mandated by contract specifications, purchasing agreements, and project requirements, making it practically essential for market participation.
• • Enforcement: Compliance is typically verified through quality control procedures by manufacturers, audits by purchasers, and testing laboratories performing material certifications.

Key Requirements Overview

Professionals must ensure that aluminum 1350-H19 wire procured or manufactured adheres to the following core provisions:

• • The standard requires strict adherence to specified tensile strength and elongation properties, with distinct requirements for lot averages and individual tests, ensuring consistent mechanical performance.
• • Key provisions include stringent limits on electrical resistivity to guarantee efficient current carrying capacity and minimize energy loss.
• • Manufacturers must ensure the wire is free from defects that would impair its electrical or mechanical integrity, consistent with good commercial practice.
• • Diameter tolerances are clearly defined to ensure interchangeability and proper fit in conductor designs.
• • The standard outlines specific testing procedures for wire containing joints, with minimum tensile strength requirements for different joint types if permitted.

Related Standards & References

ASTM B230/B230M- 07 works in conjunction with several other essential ASTM standards. Specification B233 governs the aluminum 1350 drawing stock used to produce the wire, ensuring its suitability from the outset. Test Method B193 provides the standardized method for determining electrical resistivity, a critical parameter covered by B230/B230M- 07. Additionally