Permendur® 49 Disk

Permendur® 49 Disk uses a soft-magnetic alloy processed for very high permeability and low coercivity, shaped into a precise circular format for compact magnetic circuits. After appropriate annealing, the material carries magnetic flux readily at modest magnetizing forces, helping devices respond quickly while keeping core losses low. Designers in aerospace, automotive, and instrumentation apply disks as pole pieces, magnetic washers, flux collectors, and shields where uniform geometry and stable dimensions support repeatable performance. The disk format simplifies assembly into rotary actuators, torque sensors, and relays, and mates cleanly with laminated stacks or tape-wound cores. Because magnetic behavior depends on final processing, the alloy is commonly annealed in protective atmospheres to unlock its best properties, and parts are handled carefully thereafter to preserve them. In labs, the shape aids fixtures and repeatable measurement; in production it supports fast, accurate positioning with minimal scrap. When space is tight and sensitivity matters, Permendur 49 disks enable compact magnetic paths that improve signal-to-noise in critical devices.