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Magnetics materials

Alnico Magnets Produced by casting and sintering. They present the best behaviour at high temperatures. They have a high remanence but a low coercitivity. Its design is conditional on its low coercitivity.
Description

Alnico Magnets

Produced by casting and sintering. They present the best behaviour at high temperatures. They have a high remanence but a low coercitivity. Its design is conditional on its low coercitivity.

Ferrite Magnets

Obtained specially throughout sintering. They are the magnets mostly produced due to its high quality and low cost. There are many different qualities. Depending on the application, one or another quality will be chosen. They present high resistance to demagnetisation.

Neodymium Magnets

Neodymium magnets have the best magnetic characteristics existing nowadays.Its behaviour depending on temperature is better than with the rest. They can be used for applications of up to 150ºC. In certain applications, it is necessary to protect them against oxidation.

Samarium - Cobalt Magnets

They belong to the RARE-EATH family. Its magnetic characteristics permits the measurements to be reduced. Its energy product is considerably high. It has very good behaviour at high temperatures.

Magnetic Rubber

They are produced from a mixture of ferrite powder and rubber. They may be supplied in rough, with adhesive rubber or with PVC. They can be magnetised in many ways depending on the customers need.

Quality Type Remanence Coercivity Pr. Energy Density Tª. Curie Tª. Max. Work
Br (T) HcB (KA/m) HcJ (KA/m) BH max (KJ/m³) (g/cm³) (ºC) (ºC)
Ferrite Y10T 0,2 128-160 210-280 6,4-9,6 4,8 450 250
Y30 0,38-0,40 167-215 - 26,3-29,5 4,5-4,9 450 250
Y30BH 0,38-0,40 223-239 - 27,1-30,3 4,5-4,9 450 250
Neodynium
 Nd35 1,17-1,21 860-899 >955 263-279 7,4-7,6 310 80
Nd38 1,22-1,26 876-923 >955 287-302 7,4-7,6 310 80
Nd35UH 1,17-1,21 860-907 >1990 263-279 7,4-7,6 350 180
Samarium
 Sm1Co5 0,85-0,90 620-648 >1194 127-143 8,0-8,2 720 250
Sm2Co17 1,00-1,10 653-717 >1194 183-223 8,2-8,4 825 350
Alnico
 LNG-40 1,10-1,22 46-48 - 37-40 7,3 890 425
LNG-44 1,20-1,24 48-52 >48 40-44 7,2-7,3 890 425
Magnetic Rubber CM1 0,16 95 99 7,5 3,6-3,8 450 80
CM2 0,24 150 200 11 3,6-3,8 450 80

1 Tesla = 1 Vs/m² ó 10.000 Gauss

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