Permanent Magnets

Allstar Magnetics provides a range of permanent magnetic materials, suitable for a multitude of costs, applications, and working environments. View the information below for an overview of properties by magnetic energy, heat resistance, and composition and/or grade. Please contact a team member to source the right material for your project.

Neodymium

Properties

Neodymium is one of the strongest rare earth magnetic materials in the world, featuring several grades with a range of magnetic energy and heat resistance. It is effective at small sizes with a high energy range.

Grades

  • N35-N52
  • 33M-48M
  • 30H-45H
  • 30SH-42SH
  • 30UH-35UH
  • 28EH-35EH

Ceramic

Properties

Ceramic permanent magnets are an economical choice for a wide range of applications. Ceramic materials produce strong magnetic properties, and is available in customizable shapes and sizes.

 

Magnetic Materials
Density
Maximum
Energy
Product
BH (max)
Residual
Induction
Br
Coercive
Force
Hc
Intrinsic
Coercive
Force
Hc
Normal
Maximum
Operating
Temp.
Curie
Temp.
lbs/in
g/cm
MGO
Gauss
Oersteds
Iersteds
Ceramic 1
0.177
4.9
1.05
2300
1860
3250
842*
450
842
450
Ceramic 5
0.177
4.9
3.4
3800
2400
2500
842*
450
842
450
Ceramic 8
0.177
4.9
3.5
3850
2950
3050
842*
450
842
450

Samarium Cobalt

Properties

Samarium Cobalt (SmCo) magnets are very strong, highly heat resistant, and resistant to corrosion. This rare earth magnet is stronger than neodymium at high temperature conditions.

Property SmCo
Remanence (T) 0.82–1.16
Coercivity (MA/m) 0.493–1.59
Relative permeability 1.05
Temperature coefficient of remanence (%/K) −0.03
Temperature coefficient of coercivity (%/K) −0.15..–0.30
Curie temperature (°C) 800

Alnico

Properties

Alnico (AlNiCo) has the highest temperature thresholds of all permanent magnetic materials, and is a strong, stable permanent magnet with electrically conductive properties. It features several grades with different magnetic characteristics.

 

Magnetic Materials Density( g/cm ) Maximum Energy Product BH (max) Residual Induction Br Coercive Force Hc Intrinsic Coercive Force Hc Normal Maximum Operating Temp F°
Alnico 5 (cast) 7.3 5.5 12800 640 640 975
Alnico 8 (cast) 7.3 5.3 8200 1650 1860 1020
Alnico 5 (sintered) 6.9 3.9 10900 620 630 975
Alnico 8 (sintered) 7.0 4.0 7400 1500 1690 1020

Bonded

Properties

Bonded Neodymium Iron Boron (NdFeB) magnets are bonded with epoxy resins and formed via injection molds or compression. This material features several grades with a range of magnetic energy and heat resistance.

Radially Oriented Ring

Properties

A unique substitute to magnetically charged segments, radial rings provide one-piece solutions for radial geometries. The application of one piece makes it easier to assemble than using individual arc magnets. These magnets are specifically designed for motor applications. 

Contact Us to Get Started

Please fill out the contact form below for pre-tailored solutions from our team.

 

Let our team help you source the right permanent magnetic solution for your unique application.