Educational Magnet , Made of ALNICO .widely use for school . Alnico magnets are made primarily from aluminum, nickel, cobalt, copper, iron and sometimes titanium. They can be either cast or sintered. Material Grade: LN9, LN10, LNG12, LNG13, LNG37, LNG40, LNG44, LNG52, LNG60, LNGT28, LNGT36J, LNGT18, LNGT32, LNGT40, LNGT60, LNGT72 1)Application: Magnetos, Separators, Sensors, Electron tubes, ...