KS magnet steel
Acero magnético KS
- Date
- 1917 · confidence high
- Place
- Imperial Tōhoku University, Sendai, Miyagi, Japan
- Credited to
- Honda Kōtarō
- People
- 👤 Kotaro Honda1870–1954
- Field
- Matter & energy
What it is
A cobalt-tungsten steel with a coercivity three times greater than the magnets of the time. It began the Japanese tradition of magnetic materials.
What it led to
- NKS steel (1934)
- permanent magnets for motors and loudspeakers
- the neodymium magnet