Kōtarō Honda

Kotaro Honda , born on February 23, 1870, in Okazaki, Aichi Prefecture – February 12, 1954) was a Japanese metallurgist and inventor. He invented KS steel, which is a type of magnetic resistant steel that is three times more resistant than tungsten steel. This material, which had 250 oersteds magnetic resistance, was developed through rigorous basic research on steel and alloys.