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Sintered Neodymium Block High Performance Magnets Epoxy Plated

/Sintered Neodymium Block High Performance Magnets Epoxy Plated
  • Sintered Neodymium Block High Performance Magnets Epoxy Plated

Sintered Neodymium Block High Performance Magnets Epoxy Plated for UK Customer, N38UH Rare Earth Powerful Magnet, high grade NdFeB Magnet, Anti-Corrosion Epoxy NIB Block Magnets FOR Motion (Motors and Solenoids) Strong Permanent Magnet for Motors China Suppliers

Sintered Neodymium Block High Performance Magnets Epoxy Plated Specifications (1″=25.4mm; 1lbs=0.453kg)
Materials: NdFeB
Grade N38UH or other high grade
Dimensions(mm): 27mm length * 12mmwidth *  3mm thickness
Plating: Epoxy plated
Working temperture : 150 ℃
Tolerance : ±0.1mm/±0.05mm
Magnetizing: Thickness magnetization
100 pieces in stock, 3 weeks for bulk order
1 Lot = Half with NS and Half with SN Poles

What are neodymium magnets? Are they the same as “rare earth”?
Neodymium magnets are a member of the rare earth magnet family. They are called “rare earth” because neodymium is a member of the “rare earth” elements on the periodic table. Neodymium magnets are the strongest of the rare earth magnets and are the strongest permanent magnets in the world. Rare Earth Powerful Magnet Block N48 for Kazakhstan Customer

What are neodymium magnets made from and how are they made?
Neodymium magnets are actually composed of neodymium, iron and boron (they are also referred to as NIB or NdFeB magnets). The powdered mixture is pressed under great pressure into molds. The material is then sintered (heated under a vacuum), cooled, and then ground or sliced into the desired shape. Coatings are then applied if required. Finally, the blank magnets are magnetized by exposing them to a very powerful magnetic field in excess of 30 KOe.

How is the strength of a magnet measured?
Gaussmeters are used to measure the magnetic field density at the surface of the magnet. This is referred to as the surface field and is measured in Gauss (or Tesla). Pull Force Testers are used to test the holding force of a magnet that is in contact with a flat steel plate. Pull forces are measured in pounds (or kilograms).

What does the “N rating”, or grade, of the neodymium magnets mean?
The grade, or “N rating” of the magnet refers to the Maximum Energy Product of the material that the magnet is made from. It refers to the maximum strength that the material can be magnetized to. The grade of neodymium magnets is generally measured in units millions of Gauss Oersted (MGOe). A magnet of grade N42 has a Maximum Energy Product of 42 MGOe. Generally speaking, the higher the grade, the stronger the magnet. Strip Block Neodymium Permanent Motion Motor Magnet Epoxy Plated High Performance Magnets

Because of the manufacture equipments constraint, there is a certain limit range of the dimensions and the mechanism accuracy of magnets. Please check the Geometry and machining limits in our resource center.

Neodymium magnets can be magnetized in any direction as long as it is aligned properly. In some instances multiple pole magnetizations is not possible; when it is possible, special fixtures are required. You can find all information of our Methods of Magnetization in our resource center. Sintering Neodymium Block High Performance Magnets  Black Epoxy Plated

Temperature Characteristics
Low grade Neodymium magnet may lose strength if heated above 80°C. High grade Neodym magnets have been developed to function at temperatures up to 220°C with little irreversible loss. The need for low temperature coefficient in neodymium magnet applications has triggered several grades to be developed to meet specific operating requirements. Please refer to the Demagnetization Curves of some typical neodymium magnets in the data sheet.

  • Customized is Available
  • Affordable price
  • Quality guaranteed
  • T/T or L/C accepted
  • Other payment accepted
  • Fast shipping, Worldwide delivery
  • 24-Hours excellent customer service
  • Offer free magnetic solution
  • Bulk discounts for larger orders

Product Range

Type Coating Thickness(μm) Colour Temperature(°C) PCT(Hours) SST(Hours) Corrosive Resistance
Nickel Ni+Cu+Ni 10-20 Bright Silver <200 >24-72 >24-72 Excellent
Zinc Zinc 5-10 Bright Blue <160 / >16-48 Good
Zinc Cr3+Zn 5-10 Shining Color <160 / >36-72 Excellent
Sn Ni+Cu+Ni+Sn 10-25 Silver <160 >48 >36-72 Excellent
Au Ni+Cu+Ni+Au 10-15 Gold <160 >48 >12 Good
Ag Ni+Cu+Ni+Ag 10-15 Silver <160 >48 >12 Good
Epoxy Epoxy 10-20 Black, Grey <120 / >48 Excellent
Epoxy Ni+Cu+Epoxy 15-30 Black, Grey <120 / >72-108 Very Good
Passivation No coating 1-3 Dark Grey / / Temporary Protection /
Phosphated No coating 1-3 Dark Grey / / Temporary Protection /
Type Coating Application
Nickel Ni+Cu+Ni Suitable for working conditions with high requirements on surface protection and treatment.
Zinc Zinc Suitable for working conditions with low corrosive and humidity requirements.
Zinc Cr3+Zn Suitable for hot, humid and industrial atmosphere for its high self protection performance.
Sn Ni+Cu+Ni+Sn Suitable for parts that may be welded or placed into electric equipment.
Au Ni+Cu+Ni+Au Suitable for parts that placed into the high reliable electronic equipments or decoration.
Ag Ni+Cu+Ni+Ag Suitable for parts that may be welded or placed into the electric equipment.
Epoxy Epoxy Suitable for parts used to insulate the electric equipments or placed in the high corrosive industrial atmosphere.
Epoxy Ni+Cu+Epoxy Usually applied to special working conditions with customized anti-corruption requirement.
Passivation No coating Suitable for the situation of short-transportation and storage.
Phosphated No coating Suitable for the situation of short-transportation and storage.

1. The SST results differ from coating. In general, Salt Spray Test results, which is coated by grinding (small size magnets), is better than the one, which is coated by hanging up (big size magnets).
2. Salt Spray Test (SST) condition: 5% NaCl, 35°C, continuously spray a certain time, test whether there is corrosion on coating surface.
3. Pressure Cooking Test (PCT) condition: 2 atm, 95% RH (relative humidity), 121°C to test the coating adhesion. (Zinc, Passivated/Phosphated, and Epoxy are not suitable for PCT).
4. Other test methods for coating: Drop Test, Cross Cut test, Heating and Spilling Test, Constant Temperature and Humidity Test and etc.