N40 / N42 Disc / Ring MRI Industrial Neodymium Magnets With Gold / Silver Coating

Delivery Time:15 - 30 working days after received your payment
Certification:ISO9001/ROHS/SGS

 
Strong Permanent Magnet with Rare Earth for Medical Area , MRI/NMR Electric component magnet
 
Product Description & Specification:
 
Applied in the MRI of sintered ndfeb magnet, It needs the high remanence ( Br)  and max. energy product (BH) Max  performance , in order to ensure the high definition and high resolution. Each MRI is used high performance sintered ndfeb magnet up to  5 to 6 tons.
NdFeb magnets are known for their high temperature resistance, making them durable and functional in 
temperatures exceeding 200°C. This quality makes them ideal for heavy industry applications. Sintered 
Neodymium, however, is sensitive to oxidization and easily can be corroded, so magnets usually need surface treatment .
 
1. Grades
 
Range: N35-N52; N35M-N50M;
       N35H-N48H, N35SH-N45SH;
       N30UH-N40UH,  N30EH-N38EH.
Professional suggestions:  
    - The grade like N48-N52 could meet your requirements on strong power.
    - Standard one like N35 or N40 is okay for your normal applications.
    - If you have requirement on the working temperature, please note it.
 
Maximum Working Temperature:
 
   N35-N52,     80°C(176°F)
   35M-50M,     100°C(212°F)
   35H-48H,    120°C(248°F)
   35SH-45SH,  150°C(302°F)
   33UH-40UH,  180°C(356°F)
   33EH-38EH,  200°C(392°F)
   28AH-35AH,  220°C(428°F)
 
2. Shapes
 
    Others available: Block, Ring, Cylinder, Disc, Customized shape as your design.
 
 
3. Size

Block / Bar	Length x Width x Thickness
Disc / Cylinder	Diamter x Thickness
Ring	External Diamter x Internal Diameter x Thickness
Irregular	According to customer\'s size or drawing request.

 
You could choose freely according to your plan.
 
 
4. Coatings
 
Others available: Nickel, Zinc, Gold, Silver, Epoxy, Parylene, etc.
 

Coating and Corrosive Resistance of Sintered NdFeB
Surface	Coating	colour	Thickness (um)	Resistance can be	Corrosive Resistance
PCT Test	Salt Spray Test
Nickel	Ni/NiCuNi	Silver	10-20	48h/72h	72h	excellent
Zinc	blue zinc/colour zinc	brightblue/shinyblue	8-20	24	24	good
epoxy	epoxy/NiCu+Epoxy	black/grey	15-25	48	96	excellent
Tin	NiCuSn	silver	15-20	72	72	superior
Parylene	Parylene	grey	15-25	96	200	superior
Teflon	Teflon	grey	10-20	12	24	superior
Phosphorization	-	grey	1-2	-	-	temporary protection
Passivation	-	grey	1-2	-	-	temporary protection

 
 
 5. Orientation
 Through the direction of thickness or according to your needs.
 
a. Thickness Magnetized
b. Axially Magnetized
c. Diametrally Magnetized
d. Mult-poles Magnetized
e. Radial Magnetized
f. Customzied Specific Requirements Magnetized
 

6. Product process flows
 

 
 
7. Applications:
 
 
Competitive Advantage:

Original manufactureMore than15years magnet manufactured experiences(since 1999)Competitive price, stable quality, fast delivery, good service.

 
Please have the following information avaliable when you contact us.
 

The magnet’s Grade.Any details on finish of surface.Dimensions, tolerances, shapes.Application for magnet.Quantities.Any other specifications & information.

 
We can manufacture a custom magnet for your application.If you have any question,please do not hesitate to contact me.
 
FAQ:
 
          1.What’s the payment t