Great Magtech (Xiamen) Electric Co., Ltd. >> Powerful N48 Od101.6X50.8 X 12.7mm Neodymium Ring Magnet

Powerful N48 Od101.6X50.8 X 12.7mm Neodymium Ring Magnet

Powerful N48 Od101.6X50.8 X 12.7mm Neodymium Ring Magnet
Price: US $ 18.7-20.5/Piece
Trade Terms: FOB,CFR,CIF
Min Order: 100/Piece
Pay Type: L/C,T/T,Paypal,Western Union

Product Specifications


Prod Model: N48
Markets: North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe
Product Name Of Magnet: Powerful N48 Od101.6X50.8 X 12.7mm Neodymium Ring
Envrionment Management System: ISO9001/14001
Certificate Of Magnet: CE/RoHS/SGS
Tolerance Of Magnet: +/- 0.05mm
Magnetization Direction Of Magne: Axial/Radial/Multi-Poles Magnetization
Working Temp. Of Magnet: 80 C
Transportation Of Magnet: by Sea, by Air, by Express
Lead Time Of Magnet: 7-25days
Packing Of Magnet: Anti-Magnetizing Iron Box & Carton
Payment: T/T, Paypal, Western Union
Application: NdFeB Magnet
Shape: Ring
Coating: Nickel

Product Description

No Matter you buy 1 pcs or 100,000 pcs of magnets, you can not find better service elsewhere.


Samarium Cobalt magnets, also known as rare earth magnets, offer the best value when comparing performance and size in high temperature or adverse environments.

Samarium Cobalt magnets are higher in cost, specially ring samarium cobalt ring magnet, but magnetically very strong and typically allow for dimensional reductions with higher precision.

GME can supply Samarium Cobalt Magnets with custom shapes and sizes, made-to-order Samarium Cobalt Magnets, or we can assist in developing a solution specifically for your application.

powerful N48 OD101.6x50.8 x 12.7mm neodymium ring magnet

Diameter:OD 4"
Diameter:ID 2"
Height:1/2"
Magnetization:Through Thickness
Plating/CoatingNickel (Ni)
Rally: 47.5pounds
GradeN48
Br13.6-14.2KG
Hcb10.5KOe
Hci11KOe
BHmax45-48 MGOe
Tmax80C / 176F 
MOQ100pcs
Leading Time18-23 working days
SampleYes
CertificateISO2000, TS16949, RoHS, CE & SGS
PaymentT/T, PayPal, Western Union
Samarium Cobatl magnets: good thermal stability, resistant to corrosion, resistant to demagnetization

A samarium-cobalt (SmCo) magnet, a type of rare earth magnet, is a strong permanent magnet made of an alloy of samarium and cobalt.
They are generally ranked similarly in strength to neodymium magnets, but have higher temperature ratings and higher coercivity.
samarium-cobalt (SmCo) magnets are brittle, and prone to cracking and chipping. Samarium-cobalt magnets have maximum energy products (BHmax) that range from 16 megagauss-oersteds (MGOe) to 33 MGOe, approx. 128 kJ/m3 to 264 kJ/m3; their theoretical limit is 34 MGOe, about 272 kJ/m3.
samarium-cobalt (SmCo) magnets are available in two "series", namely Series 1:5 and Series 2:17.
Sintered Samarium Cobalt magnets exhibit magnetic anisotropy, meaning they can only be magnetized in the axis of their magnetic orientation. This is done by aligning the crystal structure of the material during the manufacturing process.
 
Machining & Magnetization
Samarium Cobalt magnets offer strong resistance to demagnetization. All Samarium Cobalt magnets cannot be formed with conventional drilling, turning or milling processes, and must be ground before they are magnetized. Additionally, large or complex assemblies are usually magnetized prior to assembly. Standard tolerances for Samarium Cobalt magnets are +/-.005 for ground dimensions.
1:5 alloy material
1:5 offers 16 MGOe (energy product) to 22 MGOe and is made up of approximately 50% samarium and 50% cobalt. The 1:5 series has a maximum recommended operating temperature of 250°C. SmCo 1:5 magnets require lower field strengths than 2:17 materials to magnetize. In some instances, 1:5  material may be magnetized with multiple poles, provided that a magnetizing fixture is available.
2:17 alloy material
2:17 offers 24 MGOe to 32 MGOe and is composed of about 25% samarium, 5% copper, 18% iron, 2% hafnium or zirconium, with the remainder being cobalt. The 2:17 series has a maximum operating temperature of 350°C. Special grades of 2:17 are available which can operate to even higher temperatures. SmCo 2:17 requires a higher magnetizing field than alloy 1:5 does, and multiple pole magnetization is sometimes possible, provided that a magnetizing fixture is available.
Performance for samarium cobalt magnets:

MaterialGradeRemannenceCoercive ForceInstrinsic CoerciveMax EnergyDensityTemp
Coefficient
Temp
Coefficient
Cuire TempMax Working Temp.
(TW)
(Br)(Hcj)(Hcb)(BHmax)(D)(Near Br)(Near Hcj)(TC)
mTGsKA/mOeKA/nOeKJ/m3MGOeg/cm3%/K%/KºCºC















SmCo 1:5
 
SmCo1884084006057600143218000143188.1-0.04-0.3750250
(SmPr)CO5SmCo2089089006378000143218000159208.2-0.04-0.3750250

SmCo2293093006378000143218000175228.2-0.04-0.3750250

LTc(HM-10)59063049362001430183080108.2Temp Range%ºC700250
1:5









20-100ºC-0.004

(SmGd)CO5









100-200ºC-0.021












200-300ºC-0.042


 
SmCo2498098006768500143218000191248.3-0.03-0.2800280

SmCo24H98098006768500198925000191248.3-0.03-0.2800280

SmCo26L10301030039850004385500207268.3-0.03-0.2800300

SmCo261030103007169000119415000207268.3-0.03-0.2800300
2:17 Sm2SmCo26M1030103007169000159220000207268.3-0.03-0.2800300
(CoFeCUZr)17SmCo26H1030103007169000198925000207268.3-0.03-0.2800350

SmCo281070107007569500119415000223288.3-0.03-0.2800350

SmCo28M1070107007569500159220000223288.3-0.03-0.2800350

SmCo301100110007729700119415000239308.3-0.03-0.2800350

SmCo30M1100110007729700159220000239308.3-0.03-0.2800350

LTc(HMG-22)98098007159000150020000230238.3Temp Range%ºC840300
2:17









-50-25ºC0.005

(SmEr)2(CoTM)17









20-100ºC0.012












100-200ºC0.006












200-300ºC-0.025

Features include:
Samarium cobalt magnets are hard and brittle and may chip or break if dropped.
They have high magnetic properties
Samarium cobalt magnets offer good thermal stability
Samarium cobalt magnets are resistant to corrosion
Samarium cobalt magnets resistant to demagnetization

 
Advantages:

Disadvantages:
Comparison between neodymium and samarium cobalt
PropertyNeodymiumSm-Co
Remanence (T)1-1.30.82-1.16
Coercivity (MA/m)0.875-1.990.493-1.59
Relative permeability1.051.05
Temperature coefficient of remanence (%/K)0.120.03
Temperature coefficient of coercivity (%/K)0.55..-0.650.15..-0.30
Curie temperature (°C)320800
Density (g/cm3)7.3-7.58.2-8.4
CTE, magnetizing direction (1/K)5.2×1065.2×106
CTE, normal to magnetizing direction (1/K)0.8×10611×106
Flexural strength (N/mm2)250150
Compressive strength (N/mm2)1100800
Tensile strength (N/mm2)7535
Vickers hardness (HV)550-650500-650
Electrical resistivity (Ω·cm)(110-170)×10686×106
 
Manufacturing Methods
SmCo magnets are manufactured in the following forms:
 Sintered - fine SmCo powder is compacted in a die and then sintered, fusing the powder into a solid material. There are two forms of pressing: die pressing (which involves a hard die into which the powder is placed and then pressed), and isostatic pressing (involving a special "rubber" die into which powder is placed and then pressed with equal force in all directions on the powder). Die pressed parts are smaller than isostatically pressed parts. Although the magnetic properties of isostatically pressed parts are higher, the uniformity of magnetic characteristics is usually lower than that of die pressed parts. Sintered parts usually need some finish machining in order to meet final tolerances.

For more information, please refer to www.greatmagtech.com
Company Profile

In addition to high performance permanent magnets, GME is the leading global supplier of magnets and magnetic solutions for industrial, research and engineering applications, and strives to be the Great service leading provider worldwide.

Founded in 2000, GME was formed to advance development of magnet technology as an OEM wholesale supplier of permanent magnets and magnetic products. By interacting closely with its customers and focusing on a market-driven product line, GME has positioned itself to readily meet the challenges of today's dynamic global economy.

What sets us apart from our competitors are our excellent quality, reasonable prices and great service. With testing laboratory which equipped with the state-of-the-art measuring and testing devices, our QC dept. Ensures ongoing development and maintenance of high quality standards and guarantees full compliance with customer requirements and all applicable regulations.

We approach each project with enthusiasm and a commitment to reaching the best solution. We are a growing business, and we are striving to be the best. You will appreciate it in the products and great service we supply.

President's Letter

Since its establishment, over 15 years ago, GME has paid much attention to technological innovation and personnel training, and constantly on magnets and magnetic technology optimization and development. Through the years, GME has specialized in magnets and magnetic solutions for all industries and applications - from NdFeB magnets, SmCo magnets to magnetic assemblies, through aerospace fields to household appliances ensuring steady flow and use of green energy.

GME intend to be best of the best in service excellence among all companies worldwide. Great service is more than what we provide, it's how we think and act. It's not just "one-stop magnetic solution" or supplying excellent magnets, it's the prompt response to a request, the "smile" in the voice on the phone and the drive to always exceed your expectation. It's how we work with one another and how we work with our customers and the public society. By doing our jobs well, we help our concerned partners do their jobs well.

Our culture is rooted in GME core values "Customer Care, Innovation, Co-Prosperity, Social Responsibility". These values are the pillars of our business that guide our work behavior.

Corporate Culture

GME Vision

To be best of the best in great service among all companies worldwide.

GME Mission

Take every action to ensure high quality, think and act before customer perspective, exceed customer expectations

GME Spirit

Be sincere and reliable, Be responsible and professional, Practice teamwork, Achieve excellence

GME core values

Customer Care

Quality is our life. Customer satisfaction is our eternal pursuit. Everything we do at GME is driven by an unyielding passion for excellence in identifying and delivering solutions that exceed expectations.

Innovation

In today's fast-developing global economy, innovation is critical to a company's survival. Our heritage inspires us to keep innovative thinking all the time for continuous improvement.

Co-Prosperity

A business cannot be successful unless it creates prosperity and opportunity for others. We have a dream--customers could win more through our Great Service; We have a dream-all GME people could realize their own dreams while striving for GME Dream.

Social Responsibility

Sustainability isn't only important for people and the planet, but also is vital for business success. We are environmentally responsible and drive to sustainability. And we actively support the communities and make contribution to society in which we do business.

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