4 Types of Industrial Magnets Characteristics

4 Types of Industrial Magnets Characteristics

Industrial magnet is called industrial monosodium glutamate, which is widely used. Industrial magnets can be divided into: aluminum nickel cobalt magnet, ferrite magnet, samarium cobalt magnet and neodymium iron boron magnet.

Description of characteristic parameters of four types of industrial magnets

Characteristic	unit	AlNiCo	Ferrite		Rare Earth Magnet
Characteristic	unit	AlNiCo	Sintered Ferrite	Bonded Ferrite	Sintered Smco	Bonded Smco	Sintered Ndfeb	Bonded Ndfeb
Residual Induction	kG	11.5	4.4	3.1	11.6	8.5	14.2	7.3
Intrinsic Coercivity	kOe	1.7	3.5	3.0	>5.3	11	>11	9
Maximum Energy Product	MGOe	11	4.6	2.2	32	17	48	11
Temperature Coefficientα	%/K	-0.02	-0.18	-0.18	-0.0.3	-0.03	-0.11	-0.10
Curie Temperature	℃	845	460	460	795	795	335	335
Flexure Strength	kgf/mm²	28	13	6	12	6	25	6
Hardness		650	530		550	80-120	600	80-120
Electrical Resistivity	μΩ.cm	60	>10¹⁰		80	44000	150	26000

Description of Industrial Magnet Characteristics Distribution

4 Types of Industrial Magnets Characteristics

For the permanent magnets commonly used in the market, we have aggregated the following figure to compare the characteristic distribution. The higher the upper right, the higher the magnetic energy product. It can be seen that the magnetic advantages of NdFeB sintered magnets over other magnets, and the magnetic advantages of NdFeB bonded magnets over Ferrite magnets.

Description of the advantages and disadvantages of industrial magnets

NdFeB Strong Magnet has obvious performance advantages in all aspects, but the disadvantages are low temperature resistance coefficient and easy oxidation.

Ferrite Magnets are cheap and versatile, but the disadvantage is that they have a low magnetic energy product.

AlNiCo magnets has a good temperature coefficient, but the disadvantage is that it is relatively brittle and the price is not low.

Samarium Cobalt Magnets temperature coefficient and magnetic energy product are relatively balanced, but the disadvantage is high price.

Magnet users can choose suitable magnets according to their own needs and magnet characteristics.

Summary: The four types of industrial magnets have their own advantages and disadvantages.

Standard for permanent magnets:
MMPA Standard No. 0100-00 Standard Specifications for Permanent Magnet Materials
ASTM A1054 – 07 Standard Specification for Sintered Ceramic Ferrite Permanent Magnets
IEC 60404-8-1, Magnetic Materials Part 8: Specifications for individual materials Section 1 – Standard specifications for magnetically hard materials


Neodymium MagnetsSuper holding power / strongest magnetic material in the world.		Samarium Cobalt MagnetsExtremely powerful, small size, rare earth magnets.


Ferrite MagnetsPowerful, economically priced and differing strengths.		Alnico MagnetsHorseshoe, rod and bar shapes, feature high heat resistance.