Large Neodymium Magnets

Name: Large Neodymium Magnets
Brand: Ningbo Beilun Meank Magnetics Co.,Ltd.

The neodymium magnet with length and diameter over 80mm and the are always called large neodymium magnets. Meank customize and supply nice large rare earth neodymium rare magnets,and we have full size range for large neodymium rare earth magnets for sale...

Available surface treatment for large neodymium powerful magnets

Large neodymium rare earth magnets material are not rust-resistant, surface protection treatment become to be necessary for a big neodymium powerful magnet. Here is the available surface treatment for large neodymium powerful magnets,and details of each kind of coating.

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			Resistance
Parylene	Parylene	5-20	Grey	Excellent Against Humidity
Chemical	Ni	10-20	Silver Grey	Excellent Against Humidity

Caution is necessary for large rare earth neodymium strong magnets

Large neodymium magnets are super powerful and strong magnets,which are very dangerous,they would bring damage to your body and all electronic devices if handled without caution.Large rare earth magnets are also fragile.So please make sure read the safety neodymium magnets information ahead when handle and storage large neodymium magnets.

The grade for large strong rare earth neodymium magnets

The grade of N52 is the highest grade for large powerful and strong rare earth neodymium magnets for sale, all available grade for large neodymium magnets are listed on the table,and there are the maximum working temperature for each 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)