NI-MO REDUCED TYPE FE-NI SERIES MAGNETIC ALLOY HAVING EXCELLENT HOT WORKABILITY AND MAGNETIC CHARACTERISTICS

摘要

PURPOSE:To obtain the Fe-Ni series magnetic alloy having reduced content of Ni and Mo, free from the generation of an ear cracking defect at the time of hot rolling and having excellent workability and magnetic characteristics, a 'Permalloy(R)' series magnetic alloy, by adding specified amounts of Cu, Mo and B or furthermore compositely adding one or more kinds among Cr, V and Nb. CONSTITUTION:The magnetic alloy is formed from an Fe-Ni series alloy having the compsn. constituted of, by weight, 65 to 75% Ni, 0.03% C, 0.05 to 1.0% Si, 2.0% Mn, 0.01% S, 0.05% Ti, 0.05% Mg, 0.05% Al, 0.008% O, 0.008% N, 0.0005 to 0.05% B, 0.5 to 4% Mo, 12 to 20% Cu and the balance Fe or furthermore incorporated with total 1 to 12% of one of more kinds among Cr, V and Nb. The Fe-Ni series magnetic alloy free from the generation of ear cracking at the time of hot rolling, furthermore having excellent magnetic characteristics and having reduced content of Ni and Mo which are expensive raw materials compared to 'Permalloy(R)' can be obtd.