Properties of the Alloys of Iron and Aluminium. 149 



The B and H curves at constant temperature, shown on 

 fig. 18, were obtained from the following readings : — 



T=-90°C. 



T=-60°C. 



H. 



B. 



H. 



B. 



6-75 

 414 

 1-73 

 0-72 



1605 

 1110 



138 



6-75 

 4-14 

 1-73 

 0-72 



1583 



1095 



435 



134 



T=-20°C. 



T=H-20°C. 



6*75 

 4-14 

 1-73 

 0-72 



1385 

 968 

 420 

 123 



6-75 

 4-14 

 1-73 



072 



990 

 675 



285 

 100 



T = 60°C. 



T=100°C. 



6-75 

 4-14 

 1-73 

 072 



533 

 400 

 175 



57 



675 

 414 

 173 



0-72 



390 



280 



130 



45 



T=140°O. 



T = 180°C. 



675 

 4-14 

 1-73 



0-72 



350 



255 



125 



45 



675 

 414 

 1-73 



0-72 



338 

 248 

 125 

 47 '5 



T = 220 C C. 



T = 260°C. 



6 75 

 414 

 1-73 



0-72 



335 

 255 

 130 

 50 - 5 



6-75 

 4-14 

 173 



0-72 



330 

 250 

 135 

 555 



T=300°.C. 



T=340°C. 



6-75 

 414 

 173 

 0-72 



i 



320 

 245 

 140 

 60 5 



6-75 

 4-14 

 1-73 

 072 



295 



225 



135 



63 



