Powerful N48 Neodymium Ring Magnet

Product Name: Powerful N48 Neodymium Ring Magnet Model NO.: N48 Coating: Nickel Shape: Ring Application: Speaker Magnet, Industrial Magnet, Jewelry Magnet, Solenoid, Motor Magnet, NdFeB Magnet Type: Sm2Co17 Composite: Samarium Cobalt Magnets 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 Trademark: GME Ndfeb Magnet Transport Package: Carton, Anti-Magnetizing Packing, Pallet Specification: Customized made Origin: Zhejiang Ningbo/ Fujian Xiamen HS Code: 850511100 Product Description 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 higherprecision.powerful N48 OD101.6x50.8 x 12.7mm neodymium ring magnetDiameter:OD 4"Diameter:ID 2"Height:1/2"Magnetization:Through ThicknessPlating/CoatingNickel (Ni)Rally: 47.5poundsGradeN48Br13.6-14.2KGHcb≥10.5KOeHci≥11KOeBHmax45-48 MGOeTmax80C / 176F MOQ100pcsLeading Time18-23 working daysSampleYesCertificateISO2000, TS16949, RoHS, CE & SGSPaymentT/T, PayPal, Western UnionA 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:MaterialGradeRemannenceCoercive ForceInstrinsic CoerciveMax EnergyDensityTempCoefficientTempCoefficientCuire TempMax Working Temp.(TW)(Br)(Hcj)(Hcb)(BHmax)(D)(Near Br)(Near Hcj)(TC)mTGsKA/mOeKA/nOeKJ/m3MGOeg/cm3%/K%/KºCºCSmCo 1:5SmCo1884084006057600143218000143188.1-0.04-0.3750250(SmPr)CO5SmCo2089089006378000143218000159208.2-0.04-0.3750250SmCo2293093006378000143218000175228.2-0.04-0.3750250LTc(HM-10)59063049362001430183080108.2Temp Range%ºC7002501:520-100ºC-0.004(SmGd)CO5100-200ºC-0.021200-300ºC-0.042SmCo2498098006768500143218000191248.3-0.03-0.2800280SmCo24H98098006768500198925000191248.3-0.03-0.2800280SmCo26L10301030039850004385500207268.3-0.03-0.2800300SmCo261030103007169000119415000207268.3-0.03-0.28003002:17 Sm2SmCo26M1030103007169000159220000207268.3-0.03-0.2800300(CoFeCUZr)17SmCo26H1030103007169000198925000207268.3-0.03-0.2800350SmCo281070107007569500119415000223288.3-0.03-0.2800350SmCo28M1070107007569500159220000223288.3-0.03-0.2800350SmCo301100110007729700119415000239308.3-0.03-0.2800350SmCo30M1100110007729700159220000239308.3-0.03-0.2800350LTc(HMG-22)98098007159000150020000230238.3Temp Range%ºC8403002:17-50-25ºC0.005(SmEr)2(CoTM)1720-100ºC0.012100-200ºC0.006200-300ºC-0.025