Accession Number : ADA134120

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

Descriptive Note : Final rept.

Corporate Author : NAVAL WEAPONS CENTER CHINA LAKE CA

Personal Author(s) : Stokes, James L

PDF Url : ADA134120

Report Date : Aug 1983

Pagination or Media Count : 14

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).

Descriptors :   *CARBON STEELS, *IRON, *LOW ALLOY STEELS, *MAGNETIC PROPERTIES, *MAGNETS, ANNEALING, COERCIVE FORCE, HYSTERESIS, MAGNETIC INDUCTION

Subject Categories : Metallurgy and Metallography
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE