and Electrical Resistance of Iron. 



TABLE XI. 

 Iron Specimen A. 

 Electrical Resistance at Different Temperatures, 

 (a) Before and during annealing. (Curve 17, I.) 



245 



Temperature. 



Specific Resistance 



Temperature. 



Specific Resistance 



°C. 



in C.G.S. units. 



°C. 



in C.G.S. units. 



o 



18 



14610 



530-5 



61550 



127 



22150 



535 5 



61550 



189 



26300 



643 



77400 



2105 



27680 



674 



83400 



213 



27880 



752 



96700 



3545 



41300 



763 



99700 



373 



43450 







(6) After annealing at 1050°. (Curve 17, n.) 

 [Critical Temp.: 795°.] 



Temperature. 



Specific Resistance 



Temperature. 



Specific Resistance 



°C. 



in C.G.S. units. 



°C. 



in C.G.S. units. 



1050 



115800? 



3305 



37000 



10265 



115800? 



201-5 



25130 



950-5 



114200 



1715 



23480 



936 



113100 



18 



13820 



870 



881 

 8085 



109400 

 110000 

 101100 



16 



13580 



After reheating to 920°. 



805 



101100 



(Also plotted for Curve n.) 



786 

 761 

 724 5 

 706 

 653 



97200 

 92600 

 86600 

 84400 

 75600 



885-5 

 916 

 736 

 686-5 



110600 



112800 



89000 



81300 



620 



5045 



506 



71350 

 55550 

 55700 



681 



632-5 



630 



79750 



72400 

 72900 



327 

 321 



36760 

 36280 



20 



168 



13940 

 13510 



After 

 Before annealing, 



annealing. at 1050°. 

 fat0° 0044 0045 



T-P— ««-*!-* ma r a r 7 8£ IUe .. at 0125 0144 



[at 1000° 00236 



Soecific Resistance I at °° 1360 ° 12500 j C.G.S. 



bpecibc Resistance { at ]0 00° 1156001 Units. 



Phil Mag. S. 5. Vol. 44. No. 268. Sept. 18i>7. T 



