250 Dr. D. K. Morris on the Magnetic Properties 



Permeability- Temperature Curves. 

 Specimen B after annealing at 840° 0. 



11. 



o°c. 



200° 



400° 600° 



Temperature. 



800° 1000° C. 



Magnetic Permeability of Iron specimen B 



at Temperatures above its Critical Point. 



Curve I. After annealing at 840° C. Curve II. After annealing at 1150° C. 



. 500 



S 400 



| 30 °! 

 13. £ 200 



^ 100 



I I 



^ 600° 800° 1000° 1200° C. 



Temperature. 



