30*4 (D12.5-6.5) Ni-Cu-Ni Coated Rare Earth Countersunk Magnets

• Customization: Available
• Application: Electronic Products, Speaker Magnet, Industrial Magnet, Jewelry Magnet, Solenoid, Motor Magnet
• Shape: Countersunk/Countersink
• Model NO.: N33-N52, 38M-48M, 35H-48H, 33SH-44SH, 30UH-35UH
• Grade: N33-N52, 38m-48m, 35h-48h, 33sh-44sh, 30uh-35uh
• Certificate: CE/Sge/ISO
• Material: NdFeB(Neodymium Iron Boron)
• Direction of Magnetization: Through Thickness or Diameter
• Shapes: Round/Disc/Block/Cube/Square/Stick
• Coatings: Nickle/Ni-Cu-Ni/Zinc/Black Epoxy/Gold
• Transport Package: Box or Carton
• Specification: Customised
• Trademark: SEEN
• Origin: Qingdao, China
• HS Code: 8505111000
• Production Capacity: 1200ton/Year

Product Description

30*4(D12.5-6.5) Ni-Cu-Ni Coated Rare Earth Countersunk Magnets 
(Other shapes and types are all available,Please Contact us for more information~)

As magnet raw material prices fluctuate frequently the prices displayed on the page are not real-time prices. We will quote your products accurately according to your requirements.

Hello,Welcome to Qingdao Seen Magnetic Technology Co.,LTD.

We are specialized in producing magnet materials over 10years
Aims to be one of the best Neodymium Magnet suppliers in China.
We offer high-quality products with competitive price and professional service.
You are welcomed to contact us at any time if you have any question^^

Our Advantages

-Strong & safe supply of rare earth raw materials

-High automation on production

-State of art R&D lab

-RoHS, REACH & SGS Certified

Product Details




All sizes could be customised,Please contact us if you have any inquiry. 

Parameters

Material	Neodymium/NdFeB
Garde	N35-N52,N35SH-N52SH
Size	Diameter*Thickness(customed size)
Directions of Magnetization	Axially/Diametrically/Multi-poles Diametrically
Plating/Coating	Nickel(Epoxy,Zinc,Gold,etc coatings are available)
Tolerance	+/-0.05mm
Sample Time	5-7 days
Serivce	ODM/OEM
Max.Working Temperature	80ºC(highest 220ºC for neodymium material)
Package	Standard Carton with size 35*25*15cm

Magnetic and physical characteristics 
(All Grades are available)

Grade	Remanence		Coercive Force		Intrisic Coercive Force		Max Energy Product		Working Temp
	Br		Hcb		Hci		(BH)max		L/D=0.7
	KGS	T	KOe	KA/m	KOe	KA/m	MGOe	KJ/m	ºC
N35	11.7-12.2	1.17-1.22	≥10.9	≥868	≥12	≥955	33-36	263-287	≤80
N38	12.2-12.5	1.22-1.25	≥11.3	≥899	≥12	≥955	36-39	287-310	≤80
N40	12.5-12.8	1.25-1.28	≥11.4	≥907	≥12	≥955	38-41	302-326	≤80
N42	12.8-13.2	1.28-1.32	≥11.5	≥915	≥12	≥955	40-43	318-342	≤80
N45	13.2-13.8	1.32-1.38	≥11.6	≥923	12	≥955	43-46	342-366	≤80
N48	13.8-14.2	1.38-1.42	≥11.6	≥923	≥12	≥955	46-49	366-390	≤80
N50	14.0-14.5	1.40-1.45	≥10	≥796	≥12	≥955	48-51	382-406	≤80
N52	14.3-14.8	1.43-1.48	≥10	≥796	≥12	≥955	50-53	398-422	≤80
35M	11.7-12.2	1.17-1.22	≥10.9	≥868	≥14	≥1114	33-36	263-287	≤100
38M	12.2-12.5	1.22-1.25	≥11.3	≥899	≥14	≥1114	36-39	287-310	≤100
40M	12.5-12.8	1.25-1.28	≥11.6	≥923	≥14	≥1114	38-41	302-326	≤100
42M	12.8-13.2	1.28-1.32	≥12.0	≥955	≥14	≥1114	40-43	318-342	≤100
45M	13.2-13.8	1.32-1.38	≥12.5	≥995	≥14	≥1114	43-46	342-366	≤100
48M	13.8-14.3	1.38-1.43	≥12.9	≥1027	≥14	≥1114	46-49	366-390	≤100
50M	14.0-14.5	1.40-1.45	≥13	≥1033	≥13.5	≥1075	48-51	382-406	≤100
52M	14.2-14.7	1.42-1.47	≥13	≥1033	≥13	≥1035	49-53	390-422	≤100
35H	11.7-12.2	1.17-1.22	≥10.9	≥868	≥17	≥1353	33-36	263-287	≤120
38H	12.2-12.5	1.22-1.25	≥11.3	≥899	≥17	≥1353	36-39	287-310	≤120
40H	12.5-12.8	1.25-1.28	≥11.6	≥923	≥17	≥1353	38-41	302-326	≤120
42H	12.8-13.2	1.28-1.32	≥12.0	≥955	≥17	≥1353	40-43	318-342	≤120
45H	13.2-13.7	1.32-1.37	≥12.1	≥963	≥17	≥1353	43-46	342-366	≤120
48H	13.7-14.3	1.37-1.43	≥12.2	≥971	≥17	≥1353	46-49	366-390	≤120
50H	13.9-14.5	1.39-1.45	≥13	≥1035	≥17	≥1353	47-51	374-406	≤120
33SH	11.3-11.8	1.13-1.18	≥10.6	≥844	≥20	≥1592	31-34	247-271	≤150
35SH	11.7-12.2	1.17-1.22	≥11.0	≥876	≥20	≥1592	33-36	263-287	≤150
38SH	12.2-12.5	1.22-1.25	≥11.4	≥907	≥20	≥1592	36-39	287-310	≤150
40SH	12.5-12.8	1.25-1.28	≥11.8	≥939	≥20	≥1592	38-41	302-326	≤150
42SH	12.8-13.2	1.28-1.32	≥12.4	≥971	≥20	≥1592	40-43	318-342	≤150
45SH	13.2-13.7	1.32-1.37	≥12.3	≥995	≥20	≥1592	43-46	342-366	≤150
48SH	13.7-14.2	1.37-1.42	≥12.5	≥995	≥20	≥1592	45-49	358-390	≤150
28UH	10.2-10.8	1.02-1.08	≥9.6	≥764	≥25	≥1990	26-29	207-231	≤180
30UH	10.8-11.4	1.08-1.14	≥10.2	≥812	≥25	≥1990	28-32	223-254	≤180
33UH	11.3-11.8	1.13-1.18	≥10.7	≥852	≥25	≥1990	31-34	247-270	≤180
35UH	11.7-12.2	1.17-1.22	≥10.8	≥860	≥25	≥1990	33-36	263-287	≤180
38UH	12.2-12.5	1.22-1.25	≥11	≥876	≥25	≥1990	36-39	287-310	≤180
40UH	12.5-12.8	1.25-1.28	≥11.5	≥915	≥25	≥1990	38-41	302-326	≤180
42UH	12.8-13.2	1.28-1.32	≥12.2	≥971	≥24	≥1911	39-43	310-342	≤180
28EH	10.4-10.9	1.04-1.09	≥9.8	≥780	≥30	≥2388	26-29	207-231	≤200
30EH	10.8-11.4	1.08-1.14	≥10.2	≥812	≥30	≥2388	28-32	223-255	≤200
33EH	11.3-11.8	1.13-1.18	≥10.3	≥820	≥30	≥2388	31-34	247-270	≤200
35EH	11.7-12.2	1.17-1.22	≥10.5	≥836	≥30	≥2388	33-36	263-287	≤200
38EH	12.2-12.5	1.22-1.25	≥11.5	≥915	≥30	≥2388	35-39	279-310	≤200

Our Products

Package detail

Main production machines

Test equipments




Our customers

Production process

About us

Seen Magnetic Technology Co.,Ltd. was established in 2010. We are a professional magnet manufacturer, magnet supplier and exporter of neodymium magnets,ferrite magnets,rubber magnets, magnetic products such as magnetic lifter and pot magnet and magnetic separator etc.
Seen Magnetic Technology Co.,Ltd. has over 10 years' experience in manufacturing magnets with various shapes and various coating. We have signed long-term strategic cooperation agreements with China's leading raw material enterprises (Bao Steel and The North real-earth )to ensure the quality of our raw materials.
Our products have been exporting to South Korea,Japan , Europe and more than 10 other countries . We are one of the suppliers of relevant products of international well-known companies such as Samsung, LG, Siemens and Hyundai Motor.
As an expert of magnetic materials, We have professional analysis software and experienced engineers which can help customers choose better magnetic materials and provide our customers with high-quality products and service.

FAQ 

1. Can I get samples from Seen magnet?
Of course, we are glad to provide samples for your reference. Because samples are the first step to build trust. 

2.How can I order magnet from Seen magnet?

Just let us know the size, grade, quantity, surface coating and size tolerance you want.
Then we will provide our best price for your reference.
For example you can send us enquiry like" D25*5 N35 50000pcs Ni-cu-ni +/-0.05″
For your reference our general size tolerance is +/- 0.05, It can be adjusted according to your requirements.

3.What are the surface coatings for neodymium magnets?

For neodymium magnets, they are often need to be coated with Zn, Ni, NiCuNi,Black Epoxy or White Epoxy and other coatings to protect their surfaces from corrosion and oxidization. But for AlNiCo, SmCo or Ferrite magnets, they commonly do no need to be coated due to their own remarkable resistance against corrosion and oxidization.

4.Can I get dimension inspection report and BH curve of the magnets?

We can provide inspection report and demagnetization curve (BH curve) to our customers after production.

5.How to measure the strength of the magnets?

Normally Using a Gauss meter is a easy way to measure the magnetic field density at the surface of the magnet.
This is referred to as the surface field and is measured in Gauss (or Tesla).
Seen Magnet can also provide Gauss meters if you need.

6.What's the shipping method for magnets?

We have different trade terms and shipping method as per different gross weight of the magnets and customer's requirements. For light weight (0-50kgs), we often ship by express. For a relatively heavy weight (50-100kgs), air shipment is preferred.
For a heavy weight (above 100kgs), sea shipment is suitable due to its low cost.
But if you have particular requirements,we will operate it according to your needs.

7.Which payment term do you accept?

For small amount,(for example Sample fee) We accept Paypal and Western Union.
For larger amount transfer(T/T) is the best way.

8.What's your delivery port in China?

Generally, our delivery port of air cargo is Hong Kong or Beijing or others, the delivery port of sea shipment is Weihai or Ningbo port. But these all can be adjusted if you have particular requirement on the delivery port.

9.How do you pack the magnets to ensure shipments safely?

We use carton and steel partition to pack the goods and ensure that every box is firm, secure and non-magnetic in accordance with national and international transportation regulations.
If you have other specific packing requirements, please let us know in advance.