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Block magnet
Block magnet
Supplier Info
[China Supplier]
Contact Person : Mr. Lu Edward
Tel : 86-574-63477171
Fax : 86-574-63477816
Product Detail
Block magnet high Br, Hcj & (BH)max, Block & any size, N30-N45, 33M-45M, 30H-42H, 30SH-40SH, 28UH-35UH, 28EH-33EH.

Block magnet

At present time, Sintered NdFeB is one of the strongest magnet materials available.

It contributes to the development of many small and flat motors used in the high-tech industry.

It is high residual induction (Br), high intrinsic Coercive force (Hcj) and high Energy Product (BH), and is easily formed into various sizes, shapes.

So they have been widely used in commercially available fields since the mid 1980's. makes it suitable for servo motors, disk brushless motors, stepping motors, IT industry, MRI, and audio products.

For NdFeB, NdFeB Magents are prone to corrosion in humid environments, It usually need surface treatment according to customer's requirements to protect magnet.

The surface treatment method include Zine,Nickel,Tin,Silver,Gold plating,Phosphor and Spray Epoxy Resin etc 

Physical Properties

Temp.Coeff.of Br:

-0.11%/°C

Temp.Coeff.of iHc:

-0.60%/°C

Density:

7.4-7.6g/cm3

Curie Temperature:

310-340°C

Vickers Hardness:

600HV

Electrical Resistivity:

144

Tensile Strength:

8kg/mm2

Flexural Strength:

25kg/mm

Specific Heat:

0.12kcal/(kg.°C)

Coef.of Thermal Expansion:

4x10-6

Thermal conductivity:

7.7kcal/m.h.°C

Young's Modulus:

1.6x1011N/m2

Rigidity:

0.64N/m2

Poisson's Ratio:

0.24

Compressibility:

9.8x10-12 m2/N

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