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China, Chinese Rare Earth Magnet Generator Samarium Magnet Rare Earth Magnents1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Magnetic MaterialSmCo MagnetSmCo MagnetMagnet
Great Magtech (Xiamen) Electric Co., Ltd.
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Product Description SmCo Disc Magnet is made from high-performance 26M Sm2Co17.without other protective coating. The dimension of this item is D10x6mmmagnetized Through Thickness. Product Rare earth magnet generator samarium magnet rare earth magnetsShapeDisc / Round / Disk / Acr / cylinder / blockMaterialSamarium CobaltGradeGME-SmcoMagnetizedas per requestMOQ8000 pcsLeading Time25-35 working daysSampleYesCertificateISO2000, TS16949, RoHS, CE, SGS & REACHPaymentT/T, PayPal, Western UnionSamarium Cobalt magnets: good thermal stability, resistant to corrosion, resistant to demagnetizationA 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 & MagnetizationSamarium 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 material1:5 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 material2:17 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:MaterialGradeRemanenceCoercive ForceIntrinsic CoerciveMax EnergyDensityTempCoefficientTempCoefficientCuire TempMax Working Temp.(TW)(Br)(Hcj)(Hcb)(BHmax)(D)(Near Br)(Near Hcj)(TC)mTGsKA/mOeKA/nOeKJ/m3moreg/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%oC7002501:5 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 SmCo261030103007169000119415000207268.3-0.03-0.28003002:17 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%oC8403002:17 -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 propertiesSamarium cobalt magnets offer good thermal stabilitySamarium cobalt magnets are resistant to corrosionSamarium cobalt magnets resistant to demagnetization Advantages:Extremely resistant to demagnetizationhigh temperature stability (max operating temperatures between 250 °C (523 K) and 550 °C (823 K); Curie temperatures from 700 °C (973 K) to 800 °C (1,070 K)Expensive and subject to price fluctuations (cobalt is market price sensitive)Disadvantages:Samarium cobalt magnets can easily chip; eye protection must be worn when handling them.Allowing magnets to snap together can cause the magnets to shatter, which can cause a potential hazard.Samarium-cobalt is manufactured by a process called sintering, and as with all sintered materials, inherent cracks are very possible. These magnets do not have mechanical integrity; instead the magnet must be utilized for its magnetic functions and other mechanical systems must be designed to provide the mechanical reliability of the system.Comparison between neodymium and samarium cobaltPropertyNeodymiumSm-CoRemanence (T)1-1.30.82-1.16Coercivity (MA/m)0.875-1.990.493-1.59Relative permeability1.051.05Temperature coefficient of remanence (%/K)0.120.03Temperature coefficient of coercivity (%/K)0.55..-0.650.15..-0.30Curie temperature (°C)320800Density (g/cm3)7.3-7.58.2-8.4CTE, magnetizing direction (1/K)5.2×1065.2×106CTE, normal to magnetizing direction (1/K)0.8×10611×106Flexural strength (N/mm2)250150Compressive strength (N/mm2)1100800Tensile strength (N/mm2)7535Vickers hardness (HV)550-650500-650Electrical resistivity (Ω·cm)(110-170)×10686×106
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