12-5 Technology Drive

Setauket, NY 11733

Tel: 888-240-3606 / 631-246-6142

Fax: 631-246-6163

Email: sales@technomag.net

Technomag Electronics: line card

Neodymium Magnets

Neodymium Iron Boron magnets are the most common and widely used magnets and the strongest form of magnets commercially available. They come in various grades depending on the strength and temperature characterstics required for each application.

They also come in different shapes and sizes and also in different coatings such as Nickel, Gold, Zinc or epoxy for corrosion protection)

Technomag Inc. can provide engineering and support from prototypes to production for any application that requires these magnets. For faster service Technomag also carries hundreds of sizes in its warehouse for immediate delivery.

Neodymium Magnets Neodymium Magnets 2 Neodymium Magnets 3

Applications

  • Actuators
  • Brushless Motors
  • Converters
  • Instruments & Meters
  • Jewelry Magnet Clasps
  • Loudspeakers
  • M.R.I.'s
  • Magnetic Bearings
  • Magnetic Chucks
  • Magnetic Selectors
  • Magnetic Separators
  • Magnetic Tooling
  • Medical Equipment
  • Microphones
  • Name Tag Badge Fasteners
  • Pick up tools
  • Receivers
  • Sensors, Relays, Reed Switches
  • Servo Motors
  • Stepping Motors

Physical and Thermal Properties

Description SmCo 1-5 Alloys SmCo 2-17 Alloys NdFeB
Mechanical Properties:
Modulus of elasticity 23 x 106 psi 17 x 106 psi 22 x 106 psi
Ultimate tensile strength 6 x 103 psi 5 x 103 psi 12 x 103 psi
Density 8.2 g/cc 8.4 g/cc 7.4 g/cc
Coefficient of thermal expansion:
Perpendicular to orientation 13 x 10-6/°C 11 x 10-6/°C -4.8 x 10-6/°C
Parallel to orientation< 6 x 10-6/°C 8 x 10-6/°C 3.4 x 10-6/°C
Electrical resistivity 5µ ohm cm 86µ ohm cm 160µ ohm cm
Magnetic Properties:
Curie temperature 750°C 825°C 310°C
Reversible temperature coefficient of residual induction (-100°C to + 100°C) -0.043% / °C -0.03% /°C -0.09 to -0.13% /°C
Recoil permeability 1.05 1.05 1.05
Max. service temperature* 250°C 300°C 150°C

* Maximum Service Temperature depends on permeance coefficient of magnetic circuit. Temperatures shown here are guidelines only.

Magnetic Properties

Grade

Br (Gauss)

Hc (Oersteds)

Hci (Oersteds)

BHmax (MGOe)

Temp. Coefficient of Br

Max. Op. Temp. (°C)

Density (lbs/in3)

4SB

3,460

3,460

9,600

3

-0.1

150

0.217

B10N

6,800

5,780

10,300

10

-0.1

150

0.217

24

9,800

7,500

8,000

24

-0.12

80

0.275

24UH

10,000

9,600

41,000

24

-0.1

210

0.271

27

10,850

9,650

13,500

27

-0.12

80

0.267

27H

10,600

10,100

17,000

27

-0.11

150

0.271

28

10,800

10,100

17,000

28

-0.11

150

0.271

28UH

10,900

10,400

25,000

28

-0.09

190

0.271

30

11,400

10,400

13,500

30

-0.12

150

0.267

30H

11,200

10,700

17,000

30

-0.11

150

0.271

32SH

11,600

11,100

31,000

32

-0.1

180

0.271

35

12,300

11,300

14,000

35

-0.11

150

0.271

35SH

12,200

11,700

26,000

36

-0.1

160

0.271

38H

12,550

11,700

17,000

39

-0.1

130

0.271

39H

12,800

12,300

21,000

40

-0.1

150

0.271

40

12,900

12,400

12,000

40

-0.11

130

0.271

42

13,050

12,500

14,000

41

-0.11

120

0.271

42H

13,300

12,700

17,000

43

-0.1

120

0.271

45

13,550

11,750

11,000

44

-0.12

100

0.271

45H

13,500

12,900

15,000

45

-0.11

100

0.271

48

14,100

12,900

13,500

48

-0.12

80

0.271

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