Rare Earth Ndfeb disc Magnet. sintered neo magnet disc from China manufacturer

Rare Earth Ndfeb disc Magnet. sintered neo magnet disc

Price:	0.01~1.0 USD
Payment Terms:	T/T,L/C,WU
Place of Origin:	Zhejiang, China (Mainland)


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Product Detail

Model No.: RM-D17

Production Capacity: 100TON/MONTH

Delivery Date: 7-30days

Type: Permanent

Brand Name: rainbow magnet

coating: Ti

Means of Transport: Ocean,Air;experess

Packing: standard air cartons or sea...

Application: Speaker Magnet

Composite: Neodymium Magnet

Shape: Disc

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

1) Excellent temperature stability
2) Powerful magnetic force
3) High corrosion resistance
4) Excellent performance

NdFeB, Neodymium Iron Boron 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 Sintered NdFeB magnet is coated with Titanium (Ti),

,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.

permanent neodymium Iron Boron disc magnet 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 magnetic field stability is important, the higher the coercivity of the permanent magnet alloy in other conditions as well as by the smaller the losses caused by external magnetic interference

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

permanent neodymium Iron Boron disc magnet magnetic energy parameters

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

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	℃
N35M	1.17-1.21	11.7-12.1	892-915	11.2-11.5	≥1114	≥14	263-279	33-35	≤100
N38M	1.22-1.26	12.2-12.6	907-931	11.4-11.7	≥1114	≥14	287-303	36-38	≤100
N40M	1.26-1.29	12.6-12.9	907-947	11.4-11.9	≥1114	≥14	303-318	38-40	≤100
N42M	1.30-1.33	13.0-13.3	907-947	11.4-11.9	≥1114	≥14	318-334	40-42	≤100
N45M	1.33-1.37	13.3-13.7	907-955	11.4-12.0	≥1114	≥14	334-358	42-45	≤100
N48M	1.36-1.42	13.6-14.2	907-955	11.4-12.0	≥1114	≥14	358-382	45-48	≤100

The main physical properties of sintered permanent neodymium Iron Boron disc magnet

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