high quality Neodymium Iron Boron magnets from China manufacturer

high quality Neodymium Iron Boron magnets

Price:	0.01~5.0 USD
Payment Terms:	T/T,L/C,WU
Place of Origin:	Zhejiang, China (Mainland)


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Product Detail

Model No.: RM-R12

Production Capacity: 100TON/MONTH

Delivery Date: 7-30days

Shape: Coil

Composite: Neodymium Magnet

Means of Transport: Ocean,Air;experess

Packing: standard air cartons or sea...

Application: Speaker Magnet

Type: Permanent

Brand Name: rainbow magnet

Sintered Neo magnets have high Br,high Hcj,high (BH)max, and high stability, become the important material of the world.

Round NdFeB ring Magnet with zn coating:

A neodymium magnet (also known as NdFeB, Neodymium Iron Boron magnets Neo magnet), is a type of rare-earth permanent magnet. It is made from an alloy of neodymium, iron, and boron to form the Nd₂Fe₁₄B tetragonal crystalline structure. This material is currently the strongest type of permanent magnet in the world.

This NdFeB round magnet is Sintered NdFeB magnet,the magnetized through the axial direction.

Nd-Fe-B permanent magnet is manufactured in a wide range of shapes, sizes and grades according customer's demand.

NdFeB has a very high energy product and coercivity, can pick up 660 times of own weight of heavy objects.

The advantage is high cost-effective, with good mechanical properties, easy cutting; according customer's demand to manufacture in a wide range of shapes, sizes and grades.

The shortcoming is easy to rust, oxidation, so the Sintered NdFeB's surface is usually required for plating such as zinc, nickel, silver, gold, etc., can also be done phosphorus treatment or spray epoxy resin to slow down the oxidation rate.

The grade and its details properties, pls see follow table.

Sintered NdFeB magnetic energy parameters

Grade	Residual Induction		Coercive Force		Intrinsic Coercive Force		Maximum Energy Product		Maximum Operating Temperature
	Br		Hcb		Hcj		(BH)max		Tw
	T	KGS	KA/m	KOe	KA/m	KOe	KJ/m3	MGOe	℃
N28EH	1.04-1.08	10.4-10.8	780-812	9.8-10.2	≥2388	≥30	207-223	26-28	≤200
N30EH	1.08-1.12	10.8-11.2	804-844	10.1-10.6	≥2388	≥30	223-239	28-30	≤200
N33EH	1.14-1.17	11.4-11.7	820-876	10.3-11.0	≥2388	≥30	247-263	31-33	≤200
N35EH	1.17-1.21	11.7-12.1	860-907	10.8-11.4	≥2388	≥30	263-279	33-35	≤200
N38EH	1.22-1.26	12.2-12.6	860-907	10.8-11.4	≥2388	≥30	287-303	36-38	≤200

Note: The above mentioned data of magnetic parameters and physical are given at 20℃±2℃

Round NdFeB ring Magnet with zn coating:

The main physical properties of sintered NdFeB

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