TABLE 471.— MAGNETIC PROPERTIES OF SOME ALLOYS* 



B & H MEASURED IN cgs UNITS 



Induction data 



Values of B 2000 4000 6000 8000 10000 12000 14000 16000 



Carbon steel H 33 50 61 72 93 155 290 600 



.9 C, .5 Mn, .2 Si, Bal Fe..p 60 80 98 111 108 77 48 27 



Chrome H 32 48 61 75 100 175 — — 



Bar, 3.5 Cr, 0.9 C p 63 83 98 107 100 69 — — 



Chrome H 30 44 52.5 62 75 155 235 — 



Sheet, 5.75 Cr, 1.25 C p 67 91 114 129 133 104 60 — 



Chrome H 36 47.5 64 80 122 — — — 



Sheet, 5.75 Cr, 10 C p 56 84 94 100 82 - — - 



Tungsten steel H 35 52.5 63 70 81.5 115 195 195 



0.6 C, 5 W, 0.5 Mn, 0.2 Si../* 57 76 95 114 123 104 72 72 



Cobalt H 140 203 240 269 313 413 649 — 



Bar, 36 Co, 3.5 Cr, 3.0 W... m 14 20 25 30 32 29 22 — 



Comal 1 H 134 201 237 258 290 369 651 1355 



12 Co, 17 Mo, Bal Fe p 14.9 19.9 25.3 31 34.5 32.5 21.5 11.8 



Alnico 1 H 280 400 478 582 910 1820 — — 



12 Al, 20 Ni, 5 Co, Bal Fe.. p 7.1 10.0 12.6 13.8 11.0 6.6 — — 



Alnico 2 H 360 560 668 785 1020 1680 — — 



Cast, 10 Al, 17 Ni, 12.5 Co.. m 5.6 7.1 9.0 10.2 9.8 7.1 — — 



Alnico 2 H 340 515 605 760 1200 1800 — — 



Sintered, 10 Al, 17 Ni p 5.9 7.8 9.9 10.5 8.3 6.7 — — 



Alnico 3 H 305 473 565 698 1035 2000 — — 



12 Al, 2.5 Ni, Bal Fe p 6.6 8.5 10.6 11.5 9.7 6.0 — — 



Up to 5/8x5/8" cross section 



Alnico 3 H 279 395 478 575 940 1910 — — 



Cast, 12 Al, 25 Ni, Bal Fe.. p 7.2 10.1 12.5 13.9 10.6 6.3 — — 

 5/8x5/8" cross section and over 



Alnico 4 H 500 850 1075 1350 1890 - — — 



Cast, and sintered p 4.0 4.7 5.6 5.9 5.3 — — — 



12 Al, 28 Ni, 5 Co, Bal Fe 



Alnico 5 H 468 560 580 580 598 640 945 — 



Cast, 8 Al, 14 Ni, 24 Co, 



3 Cu, Bal Fe p 4.3 7.1 10.3 13.8 16.7 18.8 148 — 



Alnico 6 H 430 675 770 845 940 1110 1700 — 



Cast, 8 Al, 15 Ni, 24 Co, 



3Cu, 1.25 Ti, Bal Fe p 4.7 5.9 7.8 9.5 10.6 10.8 8.2 — 



Alnico 12 H 610 1000 1300 1600 2000 3000 — — 



Cast, 6 Al, 18 Ni, 35 Co, 



8Ti, BalFe p 3.3 4.0 4.6 5.0 5.0 4.8 — — 



Cunife H 530 645 845 — — — — — 



Under .155" dia. 60 Cu, 



20 Ni, Bal Fe p 3.8 6.2 7.1 — — — — — 



Cunico H 590 1000 1630 3200 — — — 



50 Cu, 21 Ni, 29 Co p 3.4 4.0 3.7 2.5 — — — — 



Vectolite H 1110 2050 3700 _____ 



30 Fe 2 3 , 44 Fe 3 4 , 



26 Co,0 3 p 1.8 2.0 1.7 — — — — — 



Silmanal Maximum p 1.111 



* Much of the data on magnetism was corrected by W. E. Ruder, of the General Electric Co. 



455 



18000 



500 

 32 



2571 

 7 



SMITHSONIAN PHYSICAL TABLES 



