D16xd3.1/7x4mm countersunk magnet for Google cardboard

Material

Sintered Neodymium-Iron-Boron (NdFeB)

Size 

Various kinds or according to customers' request

Shape

Disc/ Customzsed (block,disc,Cylinder, Bar, Ring,

Countersunk, Segment,hook,cup, Trapezoid, Irregular shapes ,etc)

Performance

N52/Customised (N33 N35 N38 N40 N42 N45 N48 N50 N52 …...)

Coating

Ni-Cu-Ni, Nickel / Customised (Zn,Ni-Cu-Ni,Ni,Gold, Silver, Copper, Epoxy, Chrome, etc)

Size tolerance

±0.05mm for diamater/thickness, ±0.1mm for width/length

Magnetization

Thickness Magnetized, Axially Magnetized, Diametrally Magnetized, Multi-poles magnetized, Radial Magnetized. (Customzied specific requirements magnetized)

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)

Applications

Neodymium(NdFeB) Magnet are widely used in many fields, such as motors,

sensors, microphones, wind turbines, wind generators, printer, switchboard,packing box ,

loudspeakers, magnetic separation, magnetic hooks, magnetic holder, magnetic chuck, ect.

Shape

Block/Rectangle/Square

Disc/Round/Cylinder

Ring/Countersunk

Dimension

L (?) x W(? ) xT(?)

D(?) x T(?)

OD(?) x ID(?) x T(?)

For other shapes,please tell more in details or drawing would be much appreciated.

Coating

Zn,Nickel,Ni-Cu-Ni,Epoxy,Au,Silver or other ?

Working Temperature

Normal or High temperature ?

Surface

Coating

Thickness (Microns)

Color

Resistance

Passivation

0-1

Silver Grey

Temporary Protection

Nickel

Ni+Ni

10-20

Bright Silver

Excellent against Humidity

Ni+Cu+Ni

Zinc

Zn

8-20

Bright Blue

Good Against Salt Spray

C-Zn

Shinny Color

Excellent Against Salt Spray

Tin

Ni+Cu+Sn

15-20

Silver

Superior Against Humidity

Gold

Ni+Cu+Au

10-20

Gold

Superior Against Humidity

Copper

Ni+Cu

10-20

Gold

Temporary Protection

Epoxy

Epoxy

15-25

Black, Red, Grey

Excellent Against Humidity & Salt Spray

Ni+Cu+Epoxy

Zn+Epoxy

Chemical

Ni

10-20

Silver Grey

Excellent Against Humidity

Parylene

Parylene

5-20

Grey

Excellent Against Humidity, Salt Spray. Superior Against Solvents, Gases, Fungi and Bacteria.