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Electric tool SrO Y10T Hard Ferrite Magnets

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Address: Jiumian Cultural Tourism Industrial Park, Mianzhu City, Sichuan Province, China

Contact name:Afra Liu

Sichuan Xinheng Magnetic Materials Co., Ltd

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Electric tool SrO Y10T Hard Ferrite Magnets

Country/Region	china
City & Province	puyang sichuan
Categories	Magnetic Materials

Product Details

Electric tool Hard Ferrite Magnets

Product Description

1. Material:strong Y35 ferrite magnet

2. Grade: Y25, Y30, Y30BH, Y33,Y33BH,Y35

3. Shape: Arc, Block, Bar, Ring, Cube, Disc, or others.

5. Application: Widely used in ammeter, speaker, audio, phone, TV, dynamo, DC permanent magnet motors (used in cars), etc

Characteristics

Low cost, high-energy, good electric insulation and excellent resistance to demagnetization.

High coercive force, high electric resistance, long-time stability, and economical price.

Type:

Isotropic ferrite magnets

Anisotropic ferrite magnets

Magnetization:

1. Isotropic ferrite magnets are not oriented and can be magnetized in any direction;

2. Anisotropic ferrite magnets are different, they are all oriented in the manufacturing direction, and should be magnetized in the direction of orientation.

Gade	Br(mT)		Hcb(KA/m)		Hcj(KA/m)		(BH)max(KJ/m³)
Gade	mT	Gs	KA/m	Oe	KA/m	Oe	KJ/m³	MGOe
HT-2	380-395	3800-3950	250-270	3140-3391	260-285	3265-3580	29.0-31.5	3.64-3.95
HT-2A	390-400	3900-4000	270-285	3391-3580	275-300	3454-3768	29.0-31.0	3.64-3.89
HT-3	405-415	4050-4150	250-270	3140-3391	260-275	3265-3768	31.0-33.5	3.89-4.20
HT-3A	415-425	4150-4250	230-250	2889-3140	240-260	3014-3265	31.0-34.0	3.89-4.27
HT-3B	400-415	4000-4150	275-290	3454-3642	285-310	3580-3893	31.8-33.7	4.0-4.23
HT-4	410-420	4100-4200	300-315	3768-3956	310-330	3893-4145	31.0-35.0	3.89-4.40
HT-4A	420-435	4200-4350	260-285	3265-3579	270-290	3391-3642	33.0-37.0	4.14-4.64
HT-4B	395-410	3950-4100	310-330	3893-4145	360-380	4521-4772	28.0-32.0	3.52-4.02
HT-5	410-430	4100-4300	300-320	3768-4019	375-390	4710-4898	33.0-36.0	4.14-4.52

Corrosion resistance in permanent magnets

By their very nature every permanent magnet contains a form of iron. Iron displays the most dramatic ferromagnetic properties of all elements, which is why it is found in the most powerful magnets. However, iron is highly reactive to water and hence makes magnets with high iron content very susceptible to corrosion. Other ferromagnetic elements used in different types of permanent magnets include nickel, cobalt, gadolinium and dysprosium all of which have an impact on both magnetic strength and resistance to corrosion.

The strongest permanent magnets available are neodymium magnets, but because of their high iron content (64-68%) they are also highly susceptible to corrosion in damp environments. Modern manufacturing techniques have seen traces of other rare earth elements such as dysprosium added to the NdFeb alloy to improve resistance to corrosion as well as other magnetic properties. Because of their susceptibility to corrosion neodymium magnets are almost always coated before being used. A very common coating used for permanent magnets is a triple layer of nickel-copper-nickel, however there are many other suitable options including but not limited to gold, silver, zinc, tin, epoxy, PTFE and various paints and lacquers.

Samarium cobalt magnets, which like neodymium magnets are part of the rare earth family, are much more resistant to corrosion even when left uncoated. This is because much of the iron used in neodymium magnets is replaced with cobalt, which does not react to water. You will still find many samarium cobalt magnets coated as standard but this is essentially for aesthetic purposes or for application-specific reasons such as adhesion or sterility. Samarium cobalt magnets are widely used in marine and offshore applications when they have to cope with being constantly exposed to saltwater air.

Alnico and ferrite magnets are both known for their resistance to corrosion, although they don’t provide the same level of magnetic performance of rare earth samarium cobalt and neodymium magnets. Some grades of alnico magnets do contain traces of iron and therefore will display some light surface corrosion over time if exposed to water. However, if exposed to other lubricants such as oil, solvents or alcohol, alnico performs very, very well. Traditionally, alnico magnets have been coated in red paint; it is not clear how or why this custom started but it is one still followed today with most alnico magnets instantly recognisable by their trademark red finish. Ferrite magnets, also known as ceramic magnets, are made from iron-oxide and as a result they simply do not corrode even when submerged in water. Because of their unrivalled resistance to corrosion, ferrite magnets are very rarely coated, but as ferrite is a dusty material some applications will require some surface treatment to avoid the dust spreading.

Packaging & Shipping

1. The convenient, cheapest and safest shipment will be arranged for you;

2. By sea, by air, by international express(DHL, Fedex, TNT, UPS, EMS) .

3. All available shipping ways could be applied ,by courier ,by air or by sea . Appointed shipping company or our own forwarders all could be used in shipment . Full-way tracking the cargos for you before the good arrival.

C11 Strontium Oxide Permanent Ferrite Magnet 0

Company Information

Dujiangyan Hengtong Magnetoelectricity Co., Ltd. is located in the rich western Sichuan Plain in southwest China, the green and quiet Qingcheng Mountain, Dujiangyan City, where the famous ancient water conservancy project Dujiangyan is located. The company was established in 1993 and specializes in R&D, production and sales of permanent magnet devices. For more than 20 years, we have insisted on being customer-centric and striving-oriented. Continuous investment in research and development in the field of magnetic materials, driven by customer needs and cutting-edge technology-driven innovation, keeps the company at the forefront of the industry and leads the industry's development.

The company's main products are sintered ferrite permanent magnet components, sintered NdFeB permanent magnet components, and samarium cobalt permanent magnet components. The products are widely used in automobiles, office equipment, power tools, household appliances, IT parts and other fields. The company has an experienced team that solves the design and manufacture of various motor magnetic materials. According to customer requirements, we can participate in the design and development of customer motors, and provide optimized solutions for customers to choose and evaluate, so that customers can get the products they need faster and better.

The company's products are mainly sold to famous motor manufacturers in China, Taiwan, Europe, the United States, South Korea and so on. Won the respect and trust of customers. We adhere to pioneering and innovative, system management, customer satisfaction, focus on quality, reduce costs, promote environmental protection and save energy.

Certification: IATF16949,MSDS,RoHS,SGS,ISO9001.

FAQ

1. What are neodymium magnets? Are they the same as "rare earth"?

Neodymium magnets are a member of the rare earth magnet family. They are called "rare earth" because neodymium is a member of the "rare earth" elements on the periodic table. Neodymium magnets are the strongest of the rare earth magnets and are the strongest permanent magnets in the world.

2. What are neodymium magnets made from and how are they made?

Neodymium magnets are actually composed of neodymium, iron and boron (they are also referred to as NIB or NdFeB magnets). The powdered mixture is pressed under great pressure into molds. The material is then sintered (heated under a vacuum), cooled, and then ground or sliced into the desired shape. Coatings are then applied if required. Finally, the blank magnets are magnetized by exposing them to a very powerful magnetic field in excess of 30 KOe.

3. How is the strength of a magnet measured?

Gaussmeters are used 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). Pull Force Testers are used to test the holding force of a magnet that is in contact with a flat steel plate. Pull forces are measured in pounds (or kilograms).

4. What does the "N rating", or grade, of the neodymium magnets mean?

The grade, or "N rating" of the magnet refers to the Maximum Energy Product of the material that the magnet is made from. It refers to the maximum strength that the material can be magnetized to. The grade of neodymium magnets is generally measured in units millions of Gauss Oersted (MGOe). A magnet of grade N42 has a Maximum Energy Product of 42 MGOe. Generally speaking, the higher the grade, the stronger the magnet.