Magnetic Properties of Iron and Low-Carbon Steel for Soft Magnet Application

Abstract

An investigation was conducted to assess the relative merits of five soft magnet materials proposed as alternatives to ARMCO Electromagnet Iron (EMI) , which is no longer available. Four irons and an SAE J403 (1005)(Unified Numbering System UNS G10050) steel were considered. When annealed in 94% nitrogen-6% hydrogen at 843 degrees C (1550 degrees F) for 4 hours and aged at 100 degrees C (212 degrees F) for 400 hours, two of the irons were found to be equivalent to EMI with regard to both coercive force and magnetic stability. A third iron exhibited similar magnetic properties after annealing, but required a higher annealing temperature to reduce the coercive force to an acceptable value. The fourth iron and the 1005 steel met the coercive force requirement after annealing at 843 degrees C (1550 degrees F) in 94% nitrogen-6% hydrogen, but suffered significant increases in coercive force during aging at 100 degrees C (212 degrees F).

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1983
Accession Number
ADA134120

Entities

People

  • James L. Stokes

Organizations

  • Naval Air Weapons Station China Lake

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Annealing
  • Carbon Steels
  • Chemical Analysis
  • Coercivity
  • Elements
  • Engineering
  • Grain Size
  • Heat Treatment
  • Magnetic Materials
  • Magnetic Properties
  • Materials
  • Materials Science
  • Metallurgy
  • Numbering Systems
  • Security
  • War Colleges

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Mathematics or Statistics
  • Superconducting Magnet Technology