Sintered Neodymium Magnets

Sintered neodymium magnet is the strongest magnetic material commercially
available today. It is largely made of alloy of neodymium, iron and boron, and
the chemical formula is Nd2Fe14B. Sintered NdFeB neodymium magnet exhibits high
magnetic energy product in small size with high coercive forces. Examples of
applications include permanent magnet motors, loudspeakers, magnetic
separators, wind power generators, computer hard drive, and MRI devices.

For more technical information of our sintered neodymium magnet, please refer
to the sections of Technological Advantages, Demagnetization Curve, Grades,
Magnetic Properties, Physical Properties, Magnetic Parameters, Surface
Treatment, Magnetization Orientations.

Technological Advantages
High Coercive Force
Highest Intrinsic coercive force Hcj≥35kOe

High Consistency
CPK of Remanence (Br) and Intrinsic coercive force (Hcj)>1.67

Low Reversible Temperature Coefficient
αBr=-0.08%/℃, βHcj=-0.4%/℃

Low Weight Loss
130℃, humidity 100%, vapor pressure 2.7bar, 20days, average weight
loss<2mg/cm2

Demagnetization Curves of Sintered Neodymium Magnet

Grades
The Grade of a magnet generally indicates how "strong" a magnet material is,
which is measured by the Maximum Energy Product. The energy product is commonly
specified in units of Gauss Oersted. The higher the grade the "stronger" the
magnet. The grade also tells the temperature rating of a magnet material.
Neodymium magnets have different heat tolerances which determine their maximum
working temperature. As the heat tolerance increases the maximum available flux
density decreases.
Magnetic Properties of Sintered Neodymium Magnet

Notes:
1. The above-mentioned data of magnetic parameters and physical properties are
given at room temperature(20℃±2).
2. The maximum service temperature of magnet is changeable due to the ratio of
length and diameter, coating and environmental factors

Physical Properties

Magnetic Parameters

Surface Treatment

As Neodymium magnet is prone to corrosion, it is usually preferable for the
magnet to be coated for protection. Among a variety of options for coatings,
nickel and nickel-copper-nickel are the most commonly used, making the magnet
more corrosion resistant and durable.

Minimum Order: 1 pieces

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