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



TABLE III— Specimen B. 

 Preliminary Measurements at 24° C. (Curves No. 3.) 

 Induction and Permeability in various Magnetic Fields. 



H 



Initial condition. 



After 2 hours at 840°. 



After 5 hours at 840°. 





B 



/* 



B 



P 



B 



F 



•078 



14 



178 



32 



410 



35 



450 



•153 



37 



242 



79 



516 



84 



549 



•378 



102 



270 



280 



741 



307 



813 



1017 



560 



550 



2656 



2608 



2995 



2942 



2-49 



4352 



1746 



10295 



4135 



10525 



4230 



440 



7265 



1652 



12395 



2816 



12405 



2820 



6-83 



9220 



1349 



13420 



1963 



13340 



1953 



920 



10420 



1133 



14005 



1523 



13920 



1515 



Cyclic B-H Curves between Limits H= 4-6"83. 



H 



Initial con- 



After 2 hours at 



After 5 hours at 



dition. 



840°. 



840°. 





B 



B 



B 



6 83 



9120 



13100 



13120 



4-40 



8670 



12800 



12820 



2-49 



8C05 



12425 



12430 



1-017 



7135 



11905 



11885 







6165 



10890 



10740 



-1017 



4265 



1420 



778 



-2-49 



-3882 



- 10105 



-10380 



-440 



-7270 



-12140 



-12210 



-683 



-9120 



-13100 



-13120 



Hysteresis in 1 

 ergs per c. cm. J 



4740 



5020 



4625 









Cyclic B-H Curves at 20° C. 

 Limits of Cycle : B = +4020. Limits B= +4140. 



Initial condition. 



H 



2-47 

 1-007 

 



-1007 

 -2-47 



B 



4025 

 3520 

 2763 

 870 

 -4025 



Hysteresis 1 _,„,nergi 

 per cycle ] ~ ' ^J 



After 2 hours at 840°. 



H 



? 115 

 •646 

 

 - -646 

 -115 



B 



4015 



3760 



2887 



- 63 



-4015 



Hysteresis = 664 — ^-j 

 cm. 



After 5 hours at 840°. 



H 



1170 



•660 

 

 - -660 

 -1170 



B 



4140 



3810 



2900 



- 242 



-4140 



Hysteresis =669 — °-. 

 cm. 3 



