Patent ID: 6190465
Filing Date: 2001-02-20
Classification: C22F,H01F,H01H,H02K

Abstract:
A soft magnetic alloy consisting of, by weight based on total weight:40%.ltoreq.Ni+Co<61.16%0%.ltoreq.Co.ltoreq.7%2%.ltoreq.Cr<5%1%.ltoreq.Ti.ltoreq.3%0%.ltoreq.Al.ltoreq.0.5%0%.ltoreq.Mn.ltoreq.2%0%.ltoreq.Si.ltoreq.1%iron and impurities resulting from smelting, and, optionally, up to 3% Mo, up to 2% W, up to 2% V, up to 1.5% Nb, up to 1% Ta and up to 3% Cu, the sum of the Cr, Mo, W, V, Nb, Ta and Cu contents being less than 7% and the sum of the Mo, W, V, Nb, Ta and Cu contents being less than 4%, the chemical composition furthermore satisfying the relationships:Cr<5-0.015.times.(Ni+Co-52.5).sup.2 if: Ni+Co<52.5Cr<5-0.040.times.(Ni+Co-52.5).sup.2 if: Ni+Co>52.5Cr<5 when Ni+Co=52.5the alloy having a saturation induction Bs of greater than 0.9 tesla, a coercive field of less than 10 A/m, an electrical resistivity p of greater than 60 .mu..OMEGA..cm and a hardness of greater than 200 HV.