20x30x10mm block magnets

20x30x10mm block magnets

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 China Manufacturer rectangle/bar magnet Large Super High Grade Rare Earth Permanent Ndfeb Magnet.

bar magnet_13magnetization side2



Place of origin China
Item ID S50125N
Material NdFeB
Shape Disc
Length 20mm
width 30mm
Thickness 10mm
Tolerance ±0.03mm for diamater   /thickness, ±0.1mm for width/ length
Direction of magnetisation axial (parallel to height)
Coating Nickel-plated (Ni-Cu-Ni),can be Customised  Gold, Silver, Copper, Epoxy, Chrome, etc)
Grade Customized  N35 N38 N40 N42 N45 N48 N50 N52 ……
Max. Working Temperature Grade Max. Operating Temperatures
N35-N52 80°C (176°F)
33M- 48M 100°C (212°F)
33H-48H 120°C (248°F)
30SH-45SH 150°C (302°F)
30UH-40UH 180°C (356°F)
28EH-38EH 200°C (392°F)
28AH-35AH 220°C (428°F)

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bar magnet (2)

bar magnet (3)

Coating for your convenience:

Neodymium magnet are composed mainly of neodymium, iron and boron.if that are not plated, the iron in the material will oxidize very easily, particularly is exposed to moisture. Even normal humidity will rust any iron anywhere over time.

Nickel is the most common choice, as it is durable and cost-effective. Our magnets are costed with a triple plating of nickle-copper-nickle.This created a shiny siliver finish and provides dependable resistance to corrosion in most applications. It is important to remember that no neodymium magnet,even with a plastic or gold coating, is completely waterproof.

More method of coating as below:



certificates from jintong_m

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