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magnet cores
magnet cores
magnet cores
magnet cores

 

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Materials: Magnet

 

material characteristics:
property residual flux density coercive force intrinsic coercive force maximum energy product density curie
temp.
maximum operating temperature recom-
mended magnet-
izing field
unit gauss oersted oersted MGOe g/cm3 °C °C kOe
symbol Br HCM HCJ BHmax D Tc
type: ferrite
processing: ceramic, dry(isotropic)/wet(anisotropic) uniaxial pressing and high temperature air sintering
features: high operating temperature, corrosion resistant, low electrical and thermal conductivity, low cost
C1* 2300 1860 3250 1.05 4.8 450 250 10
C1S* 2360 1930 3300 1.2 4.8 450 250 10
C5 3800 2400 2500 3.4 4.8 450 250 10
C7 3400 3230 4000 2.75 4.8 450 250 10
C8A 3850 2950 3050 3.5 4.8 450 250 10
C8B 4200 2913 2960 4.12 4.8 450 250 10
C9 3800 3516 4010 3.32 4.8 450 250 10
C10 4000 3617 3510 3.82 4.8 450 250 10
C11 4300 2512 2560 4.32 4.8 450 250 10
* = isotropic (dry pressed)
type: neodymium iron boron (sintered)
processing: powder metallurgy, dry(anisotropic) isostatic or uniaxial pressing with vacuum sintering
features: high magnetic flux density, high magnetic and thermal stability, low operating temperature, reactive(coating required), expensive
N33 11500 10500 12000 32 7.4 310 80 30
N35 11900 10900 12000 34.5 7.4 310 80 30
N38 12300 11300 12000 37.5 7.4 310 80 30
N40 12650 11600 12000 39.5 7.4 310 80 30
N42 13000 11600 12000 41.5 7.4 310 80 30
N45 13500 11000 12000 44.5 7.4 310 80 30
type: neodymium iron boron (bonded)
processing: injection molding or die pressing (isotropic) and thermal cure
features: high strength; complex shapes (injection molding); reactive(coating required), expensive
N3.5
4000
3400
8300
3.5
4.2
360
100
35
N5.0
5100
3950
7500
5
5.0
360
100
35
N7.0
6000
4400
7500
7
5.7
360
100
35
N8.0
6300
5300
15000
8
5.9
305
120
45
N9.5
6800
5700
10500
9.5
6.1
470
120
35
type: samarium cobalt
processing: powder metallurgy, dry(anisotropic) isostatic or uniaxial pressing with vacuum sintering
features: high strength; reactive(coating required), most expensive
S18 8750 8000 17000 17 7.4 750 250 35
S20 9400 8600 17000 20 7.4 750 250 35
S24 9800 9450 17000 23 7.4 750 250 35
S24G* 9850 8700 21500 23 7.4 800 300 40
S26G* 10350 9700 21500 25 7.4 800 300 40
S28G* 10650 9750 20500 27 7.4 800 300 40
S30G* 10900 10150 13500 29 7.4 800 300 30
* = 2:17 grade vs. 1:5 grade
type: alnico
processing: powder metallurgy process utilizing controlled hydrogen atmosphere high temperature sintering
features: fine crystalline metallic structure; high temp. stability; corrosion resistant; high mechanical strength
A11* 6800 380 1.13 6.9 810 450 1.5
A12* 6000 500 1.2 6.9 810 450 2.0
A15* 7200 500 1.55 7.0 810 450 2.0
A16* 7000 600 1.6 7.0 810 450 2.5
A46R** 12000 600 4.65 7.3 860 525 2.5
A50R** 12500 600 5 7.3 860 525 2.5
A55R** 12500 650 5.5 7.3 860 525 2.5
A65R** 13000 700 6.5 7.3 860 525 2.5
A75R** 13500 740 7.5 7.3 860 525 2.7
A35R** 10000 720 3.5 7.3 860 525 2.7
A45C*** 7000 1750 4.5 7.3 860 525 6.3
A22C*** 5860 1250 2.2 7.3 860 550 4.6
A40C*** 8000 1250 4 7.3 860 550 4.6
A50C*** 8000 1380 5 7.3 860 550 4.8
A75C*** 9000 1380 7.5 7.3 860 550 4.8
A90C*** 10500 1400 9 7.3 860 550 5.2
* = isotropic; ** = anisotropic: high remanance; *** = anisotropic: high coercivity
type: rubber/plastic
processing: injection molding
features: complex shapes, precise mechanical tolerances
R05 1500 1150 2000 0.5 3.7 450 120 10
R07 1750 1300 1950 0.7 3.7 450 120 10
R09 2050 1500 2400 0.9 3.7 450 120 10
R11 2250 1825 2400 1.1 3.7 450 120 10
R13 2350 2000 2800 1.3 3.8 450 120 10
R14 2450 2100 2850 1.4 3.8 450 120 10
 

National Magnetics Group | TCI Ceramics
Manufacturers of technical ceramics (magnetic and advanced materials) and powdered iron cores

Corporate Headquarters
1210 Win Drive, Bethlehem, Pennsylvania 18017-7061 USA | Tel: 610-867-7600 | Fax: 610-867-0200

Ferrites and Magnets: sales@magneticsgroup.com | Microwave and Advanced Materials: sales@tciceramics.com