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Name: brad
Status: other
Age: 40s
Location: N/A
Country: N/A
Date: 1999 


Question:
as scrap iron is heated up prior to putting it into an induction furnace, does it loose it's ability to be picked up by a magnet? and if so at what temperatures is this loss significant ?


Replies:
Yes, all ferromagnetic materials (materials that can act as permanent magnets) have a characteristic temperature, called the Curie Point, above which they can no longer maintain magnetism. The Curie point of iron is 770 degrees C.

Richard Barrans Jr., Ph.D.


Generally, the temperature varies with the material, and is tabulated as either the Curie temperature or the Neel temperature, depending on whether or not the material is ferromagnetic. The Curie temperature of iron is 770 C.

Tim Mooney



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