Super Strong Permanent Rare Earth Neodymium Speaker Magnets Zinc Coating

Grades :

    Range: N35-N52; N35M-N50M; N35H-N48H, N35SH-N45SH; N30UH-N40UH, N30EH-N38EH

       - The grade like N48-N52 could meet your requirements on strong power

       - Standard one like N35 or N40 is okay for your normal applications

       - Accept custom size and shape

Plating Characteristics:

Plating Type	Overall Thickness	Salt Spray Test	Pressure Cooker Test
NiCuNi (Nickel Copper Nickel)	15-21 μm	24 hours	48 hours
NiCu + Black Nickel	15-21 μm	24 hours	48 hours
NiCuNi + Epoxy	20-28 μm	48 hours	72 hours
NiCuNi + Gold	16-23 μm	36 hours	72 hours
NiCuNi + Silver	16-23 μm	24 hours	48 hours
Zinc	7-15 μm	12 hours	24 hours

Each individual layer of Nickel and Copper are 5-7 μm thick.  The Gold and Silver plating layers are 1-2 μm 

thick.

Test results shown to allow comparison between plating options. 

Performance in your application under your specific test conditions may vary.

Salt Spray testing conducted with a 5% NaCl solution, at 35 ℃ .

Pressure Cooker Test (PCT) conducted at 2 atm, 120 ℃ at 100% RH.

The different size, shape, surface coating for your choise.

Our Advantages

 14 years‘ experience in the magnet manufacturing .  SGS certificated.  Our own factory.  Stable quality with reasonable price: Zero after-sale quality problem.  professional sales serve for you: completed product  program for you.

Applications :

1. Aerospace: gyroscope, GPS devices, etc.
2. Motor areas: VCM, CDDVD-ROM, generators, motors, servo motors, micro-motors, motors, vibration motors.
3. Acoustic field: the speaker, receiver, microphone, alarm, stage audio, car audio.
4. Medical Devices: Healthcare: MRI scanners, medical equipment, magnetic health products.
5.Machinery and equipment : magnetic separation, magnetic selection machine, magnetic crane, magnetic fuel saver, magnetic machinery.
6. Hardware Machinery : magnetized anti-wax, pipe descaling, magnetic fixture, automatic mahjong machine, magnetic locks, windows and doors, magnetic tool magnetic.
7. Electronics : including electric Kitchen Appliances, vacuum cleaner, hair dryer, massage, electric toys, fan, permanent magnetic actuator vacuum circuit breakers, magnetic relays, meter, water meter, sound meter, sensors and so on.