permanent magnet slice from China manufacturer

Price:	0.1~10.0 USD
Payment Terms:	T/T,L/C
Place of Origin:	Zhejiang, China (Mainland)


	Add to My Favorites
HiSupplier Escrow	Share \|

Product Detail

Model No.: RM-B24

Production Capacity: 10000000pcs/month

Delivery Date: 15 days

Shape: Block

Composite: Neodymium Magnet

Grade: N/M/H/SH/UH/EH

Means of Transport: Ocean,Air

Packing: standard carton by sea or b...

Application: Industrial Magnet

Type: Permanent

Brand Name: rainbow magnet

The magnet made from an alloy of neodymium, iron, and boron to form the Nd2Fe14B tetragonal crystalline structure.

According the max working temperature, we can divide Sintered magnet to 7 grades, N grade is for 80 ℃,grade M is for 100℃,grade H is for 120℃,grade SH is for 120℃,grade UH is for 150℃ and grade EH is for 200℃,you according your demand to choose the grade which you need.

Mostly of rare earth permanent magnet always work do not at room temperature or under vacuum, in order to keep the accuracy of shape size and avoid the Corrosion and oxidation, we must make the coating on the surface.

Sometime, the customers have high demand of NdFeB anti-corrosion, antioxidant, we can design the magnet,add some elements, such as: niobium, vanadium, cobalt and other metal to replace part of the iron to catch the customer requirements of the acid and alkali resistant,antioxidant level, however, because of special material, we need MOQ for it.

How to judge the Permanent magnet material properties advantages and disadvantages of standard?

You can see 3 terms:

1)the magnet -crystalline anisotropy,

2)the magnetization strong

3)the Curie temperature.

salt spray test results for coating

Commonly type of coating	Coating thickness(um)				Neutral salt spray test
Commonly type of coating	dark Ni	Cu	Shine Ni	Total	Neutral salt spray test
Single-layer Ni	25			25	24h	normal
Double-layer Ni	12		10	25	72h	better
Dark Ni-Cu–shine Ni	6.25	8.75	10	25	120h	excellent

The main physical properties for permanent magnet slice:

magnetic properties	Parameters
Density /g.cm3 Vickers Hardness HV Resistivity /υΩ.cm Compressive strength/N.mm-2 Coefficient of Thermal Expansion (C⊥)/K-1 Coefficient of Thermal Expansion (C∥) /K-1	7.45 570 150 780 -4.8X10-6 -3.4X10-6