Nippon Steel Corporation

Ichiro Tachino

Takeshi Kubota

Yoshiaki Shimoyama

Shigenobu Koga

Toshihiko Uemura

Masahiro Nakamoto

A high strength non-oriented electrical steel sheet with good magnetic properties having a yield strength of .gtoreq.60 kg-f/mm.sup.2 and a yield point elongation of YP-El.gtoreq.0.3% comprising, by weight percent: up to 0.04% carbon; from 2.0% to less than 4.0% silicon; from zero percent to 2.0% aluminum; up to 0.2% phosphorus, and including one or more elements selected from manganese and nickel in an amount within the range 0.3%.ltoreq.Mn+Ni&lt;10%, with the remainder of iron and unavoidable impurities, and a method of manufacturing the steel.

High strength non-oriented electrical steel sheet and method of

A non-oriented magnetic material consisting essentially of .ltoreq.0.065% C, .ltoreq.0.10% Al, 0.31 to 3.15% Si, .ltoreq.0.020% O, .ltoreq.0.01% N and B present in such amounts that the ratio of B/N is in the range of 0.5 to 2.50. The non-oriented magnetic material of this invention is produced by hot rolling a material of the above composition, subjecting the hot-rolled sheet to at least one cold-rolling step with intermediate annealing followed by a continuous annealing step and optionally a reannealing step to produce a non-oriented magnetic material.

Growing community of inventors

Kitakyushu, Japan

Ichiro Tachino