Neodymium Sphere(ball) Magnets

Maximum Working Temperature of Strong Neodymium Spherical Magnets for Different Grade

The spherical shaped strong NdFeB magnets are give the name of rare earth neodymium(NdFeB) sphere magnets,and also known as neodymium ball magnets and magnetic sphere&balls. we just use the diameter size to express a neodymium sphere magnets.

Explore the strength and versatility of neodymium ball magnets. Perfect for scientific exploration, toys, and medical applications, delivering precision and creativity.

Uses of Rare Earth Neodymium Sphere Magnets

1. In scientific research, spherical magnets are pivotal for magnetism studies, aiding in field detection, measurement, and positioning.

2. They also contribute to biomedical research, particularly in MRI systems, enabling detailed internal observation.

3. In the medical field, these magnets play a vital role, enhancing accuracy in drug delivery through magnetic pumps.

4. Serving as raw materials in the toy industry, spherical magnets, with their unique shape and magnetic capabilities, allow for creative assembly in various toys.

5. In mechanical engineering, their strong magnetic fields and flexibility contribute to magnetic bearings, shock-absorbing devices, and automatic tracking technologies, ensuring enduring stability and reliability in mechanical applications.

Surface Treatment of Rare Earth Neodymium Sphere Magnets

Surface treatment for rare earth neodymium ball magnets is imperative to enhance performance and durability. Common treatments include coating with materials like nickel, zinc, or epoxy. These treatments not only protect against corrosion but also improve the magnets' resistance to wear, oxidation, and environmental factors, ensuring prolonged effectiveness in various applications.

Surface	Coating	Thickness (Microns)	Color	Resistance
Passivation		1	Silver Grey	Temporary Protection
Nickel	Ni+Ni	10-20	Bright Silver	Excellent Against Humidity
Nickel	Ni+Cu+Ni	10-20	Bright Silver	Good Against Salt Spray
Zinc	Zn	8-20	Bright Blue	Excellent Against Salt Spray
Zinc	C-Zn	8-20	Shinny Color	Superior Against Humidity
Tin	Ni+Cu+Sn	15-20	Silver	Superior Against Humidity
Silver	Ni+Cu+Ag	10-20	Silver	Superior Against Humidity
Gold	Ni+Cu+Au	10-20	Gold	Temporary Protection
Copper	Ni+Cu	10-20	Gold	Excellent Against Humidity&Salt Spray
Epoxy	Epoxy	15-25	Black,Red,Grey	Excellent Against Humidity,Salt Spray,Superior Against Solvents,Gases, Fungi and Bacteria,FDA Approved
	Ni+Cu+Epoxy			Excellent Against Humidity
	Zn+Epoxy
Parylene	Parylene	5-20	Grey	Excellent Against Humidity
Chemical	Ni	10-20	Silver Grey	Excellent Against Humidity

Custom Spherical Neodymium(NdFeB) Magnets

Neodymium(NdFeB) sphere magnets are non-standard magnetic balls,sintered Nd-Fe-B material has good machinability and can be customized into different sizes of neodymium magnet balls,mould is not needed for customizing strong neodymium sphere magnets.We can make any size of tiny and large neodymium sphere magnets for any quantity.

Maximum Working Temperature of Strong NdFeB Spherical Magnets for Different Grade

Neodymium Material Grade	Maximum Working Temp.	Curie Temp.
N（N35,N38,N40,N42,N45,N48,N50,N52）	176°F (80°C)	590°F (310°C)
N-M（N35M,N38M,N40M,N42M,N45M,N48M,N50M,N52M）	212°F (100°C)	644°F (340°C)
N-H（N35H,N38H,N40H,N42H,N45H,N48H,N50H）	248°F (120°C)	644°F (340°C)
N-SH（N35SH,N38SH,N40H,N42SH,N45SH,N48SH）	302°F (150°C)	644°F (340°C)
N-UH（N28UH,N30UH,N33UH,N35UH,N38UH,N40UH,N42UH）	356°F (180°C)	662°F (350°C)
N-EH（N28EH,N30EH,N33EH,N35EH,N38EH,N40EH）	392°F (200°C)	662°F (350°C)
N-AH（N28AH,N33AH,N35AH,N38AH）	428°F (230°C)	662°F (350°C)