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https://www.strong-magnetics.com/products/neodymium-ball-magnets-15mm/

15mm magnetic balls have extra strong pulling force. You can not separate such strong sphere magnets easily if there are no plastic spacers between each other.15mm magnetic balls are usually made of N35 grade, and plated with chromium or nickel. You have to handle strong magnetic balls with care. If two strong magnetic balls collide, the great impact force at the collision point will make the plating layer fall off. Strong magnetic balls are definitely not toys for children! Other grades and electroplating can be customized. (More customization info at: custom neodymium magnets)

Characteristics Of N35 Neodymium Ball(Sphere) Magnets 15mm
Remanence (Br): 15mm magnetic balls of N35 have remanence range of 11700-12200 Gs.

Coercivity (Hcj）: ≥955 KA/m.

Magnetic Energy Product (BHmax): The BHmax range of N35 sphere magnets wholesale is 33-36 MGOe.

Max.Working Temp.: 15mm magnetic balls work at temperatures below 80℃.

Coating Available: 15mm magnetic balls are plated with Nickel, Cr, Ag and Au.

15mm Magnetic Balls N35 Specifications

CategoryBall Magnet
MaterialSintered NdFeB
GradeN35
Dimension15mm
MagnetizedAxially(poles at two points)
CoatingNiCuNi
Strengthapprox. 3.4 kg
Weight(1 piece)16g
Tolerance+/-0.05mm
Max.Working Temp.80℃

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