RECOMA® 
Samarium Cobalt Magnets
Arnold produces our RECOMA brand Samarium Cobalt (SmCo) magnets in our facility in Lupfig, Switzerland and later in 2010 we will be manufacturing SMCo in Rochester, NY. We produce standard grades from 18 to 30+ as well as many custom grades. The product is DFARS compliant and any work done in the U.S. facilites is ITAR compliant as well. We can produce any variety of custom shaped magnets either fabricated from blocks or pressed to shape for higher volumes. We also provide assembly services for any range of sizes of assemblies including magnetic rotors, NMR devices, couplings, and sensor systems.
Traveling Wave Tube (TWT) magnets are also available in all varities of shapes and sizes.
SmCo magnets offer the designer a tremendous combination of extremely high magnetic properties, outstanding thermal stability, and excellent corrosion resistance. These characteristics make SmCo the ideal material in applications such as servo-motors, pump couplings, and sensors, particularly where the magnet is required to operate at high temperatures, across a broad temperature range, or in a corrosive environment.
MAXIMUM USE TEMPERATURE
Although the Curie temperature for SmCo materials is between 750 and 850 °C, current alloy compositions can only be used up to maximum temperatures of 350 to 550°C, depending upon grade. Compare this with neodymium-iron-boron's (NdFeB) maximum use temperatures of 150 to 200°C. Other advantages of SmCo over NdFeB include better corrosion resistance and greater magnetic output at temperatures above about 150°C.
Sensor applications requiring a stable magnetic field benefit from SmCo's low reversible temperature coefficient of induction: -0.030%/°C for Sm2Co17. The best NdFeB varies twice as much. The only common material with a lower coefficient than this is Alnico, but with significantly lower magnetic output and resistance to de-magnetization.
MANUFACTURING
Arnold Magnetic Technologies AG Samarium Cobalt factory is one of the world's more modern rare earth magnet manufacturing facilities and is equipped with state-of-the-art equipment throughout. A full range of RECOMA material grades is available and the Company's continuous improvement philosophy ensures that enhanced materials will continue to be developed and introduced.
Arnold is one of only a few companies that custom manufactures both fully dense AND polymer bonded Samarium Cobalt. For information on polymer bonded Sm2Co17, please visit the Bonded Magnet section.
RoHS COMPLIANCE
Recoma™ Samarium Cobalt Magnets are RoHS compliant .
Precision Magnetic Assembly Capabilities