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 Neodymium magnets
 Samarium-cobalt magnets
 Ferrite magnets
 Neodymium plastic magnets
 Al-Ni-Co magnets

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Products Lineup
↑↓ Click on the magnets of interest to see the details and related data.

* If you wish to read the product guide, company overview or other information as printed out, the online brochure is very handy.

Neodymium magnets
Neodymium magnets
These are sintered magnets made by powder metallurgy and consisting mainly of neodymium (Nd), iron (Fe) and boron (B). Having the highest magnetic energy of all existing magnets, these products are notated as NF among our product lines. These products must undergo surface treatment by such means as nickel plating, with the optimal means of surface treatment being chosen depending on the environmental conditions where the magnet is to be used. Since the neodymium magnet contains much iron, it undergoes surface treatment; the standard method for NF magnets is nickel plating or a similar method.

* Click here for details of Nd-Fe-B magnets.
 Samarium-cobalt magnets
Samarium-cobalt magnets
These sintered products consist of samarium (Sm) and cobalt (Co). Two kinds of material are available: 1-5 series and 2-17 series. Since the material makes these magnets rust-resistant, they can be used without surface treatment.
The samarium-cobalt magnet is subject to less change in magnetism than the neodymium magnet. It is a particularly effective magnet when its design requires the consideration of temperature characteristics.

* Click here for details of Sm-Co magnets.

Ferrite magnets
Ferrite magnets
These sintered ceramics products are based on iron oxide or a similar compound. Although not possessing much magnetic energy, these products offer stable performance and are resistant to rust, thereby achieving high cost performance. A ferrite magnet changes little over time, is chemically stable, and therefore used in wide-ranging applications.

* Click here for details of Ferrite magnets.
 Neodymium plastic magnets
Neodymium plastic magnets
Just like sintered neodymium magnets, these magnets consist mainly of neodymium (Nd), iron (Fe) and boron (B). Since its dimensional accuracy is ensured by molding alone, this type of magnet is suited for complexly shaped and thin products. Since this magnet contains plastics, its magnetic characteristics are midway between those of neodymium magnets and ferrite magnets.

* Click here for details of Neodymium plastic magnets.

Al-Ni-Co magnets
Al-Ni-Co magnets
This type of representative magnet has existed since ancient times. These cast magnets combine iron (Fe) with aluminum (Al), nickel (Ni) and cobalt (Co). The Al-Ni-Co magnet towers above the rest in terms of temperature characteristics. Since it only has low magnetic coercive force (Hcj), however, it easily loses magnetism and requires caution regarding the method of magnetization and shaping.

* Click here for details of Al-Ni-Co magnets.
  
Magnet types and their characteristics
    Al-Ni-Co
magnets
Ferrite
magnets
Rare-earth
samarium-cobalt
magnets
Rare-earth
neodymium
magnets
(NF magnets)
Neodymium
plastic
magnets
Residual flux
density
Br
(kG)
12 4.4 11 13 6.8
Magnetic coercive
force
Hcb
(kOe)
0.6 3.2 6.8 12 5.3
Hcj
(kOe)
- 3.3 7 17 9
Maximum energy
product (BH)max
(MGOe) 5 4.6 30 40 9.5
Temperature coefficient Br
(-%/C)
-0.02 -0.18 -0.03 -0.11 -0.10
Curie temperature Tc
C
850 460 800 320 360

Density

d
(g/cm3)
7.3 5.0 8.4 7.5 6.0
Characteristic map
Conversion of SI units and conventional units
Item SI unit Conventional unit Conversion rate
Magnetic flux Wb Mx 1 Mx=10-8Wb
Magnetomotive force A Gilbert 1 Gilbert=0.795775A
Magnetic field strength A/m Oe 1 Oe=79.5775A/m
Magnetic coercive force
Flux density T(=V s/m2) G 1 G=10-4T
Magnetic energy product J/m3 GOe(=erg/cm3) 1 MGOe=7.95775kj/m3
Magnetic permeability (absolute permeability) H/m(=V s/A m) G/Oe 1 G/Oe=1.25664uH/m
Specific magnetic permeability Absolute number Absolute number Identical

To Inquiry Form To Inquiry Form Neodymium magnets Samarium-cobalt magnets Ferrite magnets Neodymium plastic magnets Al-Ni-Co magnets ?????????? ??????????? ???????????? ?????????????? ??????????? QCD?? ?????? ???? ???????? ????? Sagami-Magnet?????? ?????????? ????????? ?????? ???????????? ????????? ?????????? ?????????????
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