458 



TABLE 476.— HEUSLER MAGNETIC ALLOYS 



Several alloys have been experimented with that, although all the constituents are non- 

 magnetic or very weakly magnetic materials, have quite definite magnetic properties. 

 Among these are Nos. 1-3 below, Heusler magnetic alloys. Some alloys made up for the 

 most part of magnetic elements are nonmagnetic or very weakly magnetic, i.e., No. 4 below. 



1. 61 Cu, 25 Mg, 14 Al 



magnetic with a permeability m 



2. 75.6 Cu, Mn 14.3, Al 10.1, Pb 



magnetic B T = 480, H. = 3.8, n 

 max = 80. 



Cu 61.5, Mn 23.5, Al 15 



fir = 2550, He — 7.3, m max = 



236. 

 Cu 78, Fe 12, Mg 



nonmagnetic. 



TABLE 477.— PERMEABILITY OF SOME SPECIMENS OF IRON AND STEEL 



This table gives the induction and the permeability for different values of the magnetiz- 

 ing force of some of the specimens in Table 493. The specimen numbers refer to the same 

 table. The numbers have been taken from the curves given by Hopkinson and may there- 

 fore be slightly in error ; they are the mean values for rising and falling magnetizations. 



TABLE 478.— MAGNETIC PROPERTIES OF SOFT IRON AT 0° and 100°C 



SMITHSONIAN PHYSICAL TABLES 



