Product Line Overview

Permanent Magnets

Permanent magnets have changedsignificantly from when the properties oflodestone were first discovered in ancientGreece to the familiar red and black horseshoeshape from school magnetics lessons to thesmall, yet strong rare earth grades of today.Although their use is significant, permanentmagnets are often easily overlooked in bothcommon and high reliability mechanical andelectronic devices. For these reasons, whenmagnets matter, people talk to MMG.

In addition to our soft ferrite and iron powdermaterials, MMG has been a specialist inpermanent magnets for over 25 years. But itis our expertise rather than just products thatmakes MMG special. Our engineering, qualityassurance and customer service is the reason

that we are the choice supplier of customers inindustries as varied as avionics, automotive,advertising, white goods, telecommunicationsand audio. The applications for permanentmagnets are not limited to holding,loudspeakers and decoration, as they are usedin transducers, electric motors and sensingapplications utilizing Hall Effect and ReedSwitches.

MMG has some of the best applicationsengineers in the industry and a customerservice support team dedicated to keep yourproject on track. We offer a wide range ofstandard shapes and sizes, but prefer to workwith customer defined specifications. In shortwe provide solutions, not just magnets.

• Sintered Ferrite

• Cast & Sintered Alnico

• Samarium Cobalt

• Neodymium Iron Boron

• Bonded Rare Earth

• Holding Magnets

• Flexible Ferrite

MMG Canada Limited

Neodymium Iron Boron

2

Parameter Symbol Unit N25EH N28EH N30H N30SH N30UH N30EH N35 N35HRemanentFlux Density(minimum)

BrmTG

102010200

105010500

108010800

108010800

108010800

108010800

118011800

123012300

Coercivity(minimum)

bHckA/mkOe

7569.5

7809.8

83510.5

83510.5

83510.5

83510.5

86010.8

86010.8

IntrinsicCoercivity(minimum)

jHckA/mkOe

238730.0

238730.0

135316.8

159220.0

198925.0

238730.0

95512.0

135317.0

MaximumEnergy Product(minimum)

BHmaxkJ/m3

MGO19925

22328

23930

23930

23930

23930

27935

27935

CurieTemperature(minimum)

Tc °C 330 330 330 330 330 330 310 330

WorkingTemperature(maximum)

Tw °C 200 200 120 150 180 200 80 120

TemperatureCoefficient(typical)

α (Br) % / °C -0.12 -0.12 -0.12 -0.12 -0.12 -0.12 -0.12 -0.12

Parameter Symbol Unit N35 N40 N40H N42H N42SH N45 N45H N48RemanentFlux Density(minimum)

BrmTG

118011800

127012700

127012700

130013000

130013000

134013400

134013400

138013800

Coercivity(minimum)

bHckA/mkOe

86010.8

87511.0

87511.0

95512.0

95512.0

87511.0

99512.5

87511.0

IntrinsicCoercivity(minimum)

jHckA/mkOe

95512.0

95512.0

135317.0

135317.0

159220.0

95512.0

135317.0

95512.0

MaximumEnergy Product(minimum)

BHmaxkJ/m3

MGO27935

31840

31840

33442

33442

35845

35845

38248

CurieTemperature(minimum)

Tc °C 310 310 330 330 330 310 330 310

WorkingTemperature(maximum)

Tw °C 80 80 120 120 150 80 120 80

TemperatureCoefficient(typical)

α (Br) % / °C -0.12 -0.12 -0.12 -0.12 -0.12 -0.12 -0.12 -0.12

Note: Additional Neodymium Iron Boron grades, including bonded versions, areavailable, contact our applications engineering department for futher details.

Product Line Overview

Samarium Cobalt

3

Parameter Symbol Unit S18 S22 S24 S26 S26M S26H S28 S30RemanentFlux Density(minimum)

BrmTG

8408400

9309300

9809800

103010300

103010300

103010300

107010700

110011000

Coercivity(minimum)

bHckA/mkOe

6057.6

6378.0

6768.5

7169.0

7169.0

7169.0

7569.5

7729.7

IntrinsicCoercivity(minimum)

jHckA/mkOe

143218.0

143218.0

143218.0

119415.0

159220.0

198925.0

119415.0

119415.0

MaximumEnergy Product(minimum)

BHmaxkJ/m3

MGO14318

17522

19124

20726

20726

20726

22328

23930

CurieTemperature(minimum)

Tc °C 750 750 800 800 800 800 800 800

WorkingTemperature(maximum)

Tw °C 250 280 280 150 300 330 250 250

TemperatureCoefficient(typical)

α (Br) % / °C -0.04 -0.04 -0.04 -0.04 -0.04 -0.04 -0.04 -0.04

Alnico

Parameter Symbol Unit A2 A3 A5 A5-7 A6 A8 A8B A9RemanentFlux Density(minimum)

BrmTG

7007000

6006000

105010500

135013500

100010000

8008000

8508500

105010500

Coercivity(minimum)

bHckA/mkOe

440.6

380.5

470.6

590.7

560.7

1231.5

1241.6

1121.4

IntrinsicCoercivity(minimum)

jHckA/mkOe

450.6

400.5

480.6

590.7

570.7

1281.6

1241.6

1121.4

MaximumEnergy Product(minimum)

BHmaxkJ/m3

MGO121.5

101.3

313.9

607.5

243.0

324.0

445.5

729.0

CurieTemperature(minimum)

Tc °C 810 810 850 860 860 850 860 860

WorkingTemperature(maximum)

Tw °C 450 450 450 525 450 450 550 550

TemperatureCoefficient(typical)

α (Br) % / °C -0.02 -0.03 -0.02 -0.03 -0.02 -0.02 -0.03 -0.03

Note: Additional Samarium Cobalt grades, including bonded versions, are also available. The properties of our Alnico grades will vary slightlydepending on the formation process, cast or sintered. Please contact our applications engineer department for further details.

Product Line Overview

MMG Canada Limited

10 Vansco Road Toronto, Ontario M8Z 5J4, Canada

Telephone: +1 (416) 251 2831Facsimile: +1 (416) 251 6790Email: sales@mmgca.com

Website: www.mmgca.com

General Note: MMG Canada Limited reserves the right to make changes in product specifications without notice or liability. All information is subject to MMG Canada Limited’s own data and is considered accurate at time of going to print.

© MMG Canada Limited 2005 Issue 2 · 03.06

Hard Ferrite (Ceramic)

MMG Canada Limited

4

Parameter Symbol Unit C1 C3 C5 C8 FLEX6 FLEX11RemanentFlux Density(minimum)

BrmTG

2202200

3503500

4004000

3703700

1631630

2252250

Coercivity(minimum)

bHckA/mkOe

1361.7

1551.9

1602.0

2403.0

1101.4

1592.0

IntrinsicCoercivity(minimum)

jHckA/mkOe

2202.8

1602.0

1852.3

2603.3

2403.0

2222.8

MaximumEnergy Product(minimum)

BHmaxkJ/m3

MGO81.0

243.0

283.5

283.5

4.50.6

9.51.2

CurieTemperature(minimum)

Tc °C 450 450 450 450 450 450

WorkingTemperature(maximum)

Tw °C 250 250 250 250 75 75

TemperatureCoefficient(typical)

α (Br) % / °C -0.19 -0.19 -0.19 -0.19 -0.19 -0.19

Flexible Magnets

In either strip, roll or sheet form, flexible ferrite magnetic material fromMMG has become the choice for printing industry for promotionalmaterials, vehicle signage and toys.

Flexible ferrite can be supplied with and without a PVC or adhesivebacking. The PVC backing can be printed on directly therebyeliminating the need for laminating a printable material on the magnetprior to printing. Both our FLEX6 and FLEX11 grades are normallymagnetised on one face for maximum holding power, but can besupplied axially magnetised to special order.

Standard Product Size Range and Backing Options:

Thickness: 0.4 mm to 3.0 mm0.015 in to 0.120 in

Width: 12.5 mm to 610.0 mm0.5 in to 24.0 in

Length: 80 mm to 3000 m3 in to 1000 ft

Backing: Plain, AdhesivePVC

Steel, Zinc

Custom die cutting and PVC colours other than white are also availableupon request.