Neodymium Iron Boron cylinder magnets

0.01~10.0 USD

Min. Order:	10 Piece/Pieces
Trade Term:	FOB
Payment Terms:	L/C, T/T, WU
Supply Ability:	100TON/MONTH
Place of Origin:	Zhejiang

Company Profile

Rainbow Magnet Ltd.

Location:	Ningbo, Zhejiang, China (Mainland)
Business Type:	Manufacturer

Product Detail

Model No.:	RM-C03
Means of Transport:	Ocean, Air, experess
Application:	Speaker Magnet
Type:	Permanent
Composite:	Neodymium Magnet
Brand Name:	rainbow magnet
Production Capacity:	100TON/MONTH
Packing:	standard air cartons or sea package according customer's demand
Delivery Date:	7-30days

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Product Description

Neodymium Iron Boron cylinder magnets

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, copper,silver, gold, etc., can also be done phosphorus treatment or spray epoxy resin to slow down the oxidation rate.

Pic shows magnet with UH grade, it means max working temperature is 180 degree.

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	℃
N28UH	1.04-1.08	10.4-10.8	780-812	9.8-10.2	≥1990	≥25	207-223	26-28	≤180
N30UH	1.08-1.12	10.8-11.2	804-844	10.1-10.6	≥1990	≥25	223-239	28-30	≤180
N33UH	1.14-1.17	11.4-11.7	820-876	10.3-11.0	≥1990	≥25	247-263	31-33	≤180
N35UH	1.17-1.21	11.7-12.1	860-907	10.8-11.4	≥1990	≥25	263-279	33-35	≤180
N38UH	1.22-1.26	12.2-12.6	860-907	10.8-11.4	≥1990	≥25	287-303	36-38	≤180
N40UH	1.26-1.29	12.6-12.9	860-907	10.8-11.4	≥1990	≥25	289-303	38-40	≤180

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

demagnetization curve for UH grade in difference temperature:

The main physical properties of sintered Neodymium Iron Boron cylinder magnets:

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

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.

We listed the details of rare earth magnet material for your reference and you can according your demand to choose which fit your design.

Type	composition	Magnetic properties
Type	composition	Br/T	Hc /(Ka/m)	(BH)m/ (kJ/m3)	Tc/℃	Density g/cm-3
Sinter NdFeB	Nd13.5(Fe,M)bananceB6.1-7.0	1.1-1.4	800-2400	240-400	310-510	7.4-7.6
Bonded NdFeB	Nd4-13(Fe,M)bananceB6-12	0.6-1.1	800-2100	56-160	310	5.3-6.0
AlNiCo 5	8%-12%Al,15%-22%Ni 5%-24%Co,3%-6%Cu. Balance Fe	0.7-1.32	40-60	9-56	890	7.3
AlNiCo8	7%-8%Al,14%-15%Ni 34%-36%Co,5%-8%Ti, 3%-4%Cu,Balance Fe	0.3-0.44	250-350	25-36	450	7.3
1:5,SmCo	62%-63%Co,38%-37%Sm	0.9-1.0	1100-1540	117-179	720	8.1
2:17,SmCo	Sm(Co0.69Fe0.2Cu0.1Zr0.01)7.2	1.0-1.3	500-600	230-240	800	8.2
Bonded smco	Sm(Co0.67Fe0.22Cu0.1Zr0.07Ti0.01)7.1	1.0-1.07	800-1400	160-204	810	7.4