ALNICO CERAMIC RARE EARTH ASSEMBLIES FILTRATION
 

 
APPLICATIONS
  • Magnetic separators
  • Wind Turbines
  • Linear actuators
  • Microphone assemblies
  • Servo motors
  • Tape recorders
  • Alternators
  • Pacemakers
  • DC motors (automotive starters)
  • Flow meters
    		•
    NEODYMIUM MAGNETS

    Neodymium Iron Boron (NdFeB) magnets, of the Rare Earth class, have been commercially available since the mid -1980's. Their popularity has grown rapidly due to their high Maximum Energy Product and their wide range of available shapes, sizes, and grades. Neodymium magnets can be manufactured by sintering, compression bonding, injection molding, and extrusion. The sintered form holds the highest energy product of up to 48MGOe, while the bonded form holds a lower energy product of up to 10MGOe. The majority of the neodymium magnets is anisotropic and can only be magnetized in the orientation direction. In general, magnetizing fields of approximately 30KOe are required to saturate Neodymium magnets.

    Neodymium magnets are prone to corrosion in humid environments. Nickel, zinc, Tin, silver, gold plating and spray coating epoxy resin are offered as corrosion protective measure. See Table below for grades and properties of Neodymium magnets.
    Neodymium Magnet Grades & Properties
    Grade Br Hc (Bd Hd) max Curie Temp. Temp. Coe Max. Practical Operating Temp
    [Gs] [Oe] MGOe [ ˚ F] [%/ ˚ F] [ ˚ F]
    N25EH 10200 9600 25 626 0.066 392
    N28UH 10500 9800 28 626 0.066 356
    N28EH 10500 9800 28 626 0.066 392
    N30H 10800 10500 30 626 0.066 248
    N30SH 10800 10500 30 626 0.066 302
    N30UH 10800 10500 30 626 0.066 356
    N30EH 10800 10500 30 626 0.066 392
    N33H 11400 10500 33 626 0.066 248
    N33SH 11400 10500 33 626 0.066 302
    N33UH 11400 10500 33 626 0.066 356
    N35 11800 10800 35 590 0.066 176
    N35M 11800 10800 35 608 0.066 212
    N35H 11800 10800 35 626 0.066 248
    N35SH 11800 10800 35 626 0.066 302
    N38 12300 11000 38 590 0.066 176
    N38M 12300 11000 38 608 0.066 212
    N38H 12300 11000 38 626 0.066 248
    N38SH 12300 11000 38 626 0.066 302
    N40 12700 11000 40 590 0.066 176
    N40M 12700 11000 40 608 0.066 212
    N40H 12700 11000 40 626 0.066 248
    N40SH 12700 11000 40 626 0.066 302
    N42 13000 11000 42 590 0.066 176
    N42M 13000 11000 42 608 0.066 212
    N42H 13000 10800 42 330 0.066 248
    N45 13300 10800 45 310 0.066 176
    N45M 13300 10800 45 608 0.066 212

    Br: Residual Induction
    Gs: Gauss
    Hc: Coercive Force
    Oe: Oersted
    Bd Hd: Maximum Energy Product
    ˚F: Degree Fahrenheit

    Standard Tolerances (inches);
    All shapes and sizes (±0.005)
    SAMARIUM COBALT MAGNETS

    Samarium Cobalt (SmCo) magnets, of the Rare Earth class, have been available since the early 1970's. These magnets possess very high magnetic properties, excellent thermal stability, while remaining resistant to corrosion. These characteristics make SmCo magnets ideal for applications requiring a resistance to wide-ranging temperatures and environments.

    Samarium Cobalt magnets are manufactured by sintering or compression bonding. They are anisotropic can only be magnetized in the direction of orientation. In general, magnetizing fields of approximately 30 to 45KOe are required to saturate Samarium Cobalt magnets.

    See Table 1 and Table 2 for grades and properties of sintered and bonded Samarium Cobalt magnets respectively.
    Table 1 - Sintered Samarium Cobalt Magnet Grades & Properties
    Grade Br Hc (Bd Hd) max Curie Temp. Temp. Coe Max. Practical Operating Temp
    [Gs] [Oe] MGOe [ ˚ F] [%/ ˚ F] [ ˚ F]
    SmCo18 8000 8000 18 1382 0.022 482
    SmCo20 8500 8000 20 1382 0.022 482
    SmCo22 9000 8200 22 1382 0.022 482
    SmCo24 9800 8500 24 1472 0.022 572
    SmCo26 10000 9000 26 1472 0.022 572
    SmCo26L 10500 5150 26 1472 0.022 572
    SmCo28 10300 9500 28 1472 0.022 572
    SmCo28H 10300 9500 28 1472 0.022 572
    SmCo30H 11000 6000 30 1472 0.022 572

    Br: Residual Induction
    Gs: Gauss
    Hc: Coercive Force
    Oe: Oersted
    Bd Hd: Maximum Energy Product
    ˚F: Degree Fahrenheit

    Standard Tolerances (inches);
    All shapes and sizes (±0.005)
    Table 2 - Bonded Samarium Cobalt Magnet Grades & Properties
    Grade Br Hc (Bd Hd) max Curie Temp. Temp. Coe Max. Practical Operating Temp
    [Gs] [Oe] MGOe [ ˚ F] [%/ ˚ F] [ ˚ F]
    BSmCo6A 4000 3500 4 1328 0.055 248
    BSmCo8A 5000 4000 6 1328 0.055 248
    BSmCo10B 6000 4500 8 1328 0.055 248
    BSmCo12B 7000 4000 10 1328 0.055 248
    BSmCo12HB 10000 9000 26 1472 0.022 572

    Br: Residual Induction
    Gs: Gauss
    Hc: Coercive Force
    Oe: Oersted
    Bd Hd: Maximum Energy Product
    ˚F: Degree Fahrenheit

    Standard Tolerances (inches);
    All shapes and sizes (±0.005)