Audited Supplier
Industrial Ferrite Block Disc Ring Arc Customized Permanent Magnet
Ferrite magnets, sometimes referred to as ceramic because of their production process, are the least expensive class of permanent magnet materials.Ferrite magnets became commercially available in the mid 1950's and has since found its way into countless applications including arc shaped magnets for motors, magnetic chucks and magnetic tools.
The raw materials of ferrite magnets are mixed in the correct proportions, granulated, and calcined (presintered). After going through several intermediate phases, a hexaferrite phase (BaFe12O19 or SrFe12O19) is achieved. The presintered granulate is ground to a powder. It can then be pressed wet or dry in a magnetic field (anisotropic) or in the absence of a magnetic field (isotropic) and sintered. The nature of the manufacturing process results in ferrite magnets that frequently contains imperfections such as cracks, porosity, chips, etc. Fortunately, these imperfections rarely interfere with a magnet's performance.
Ferrite magnet is inherently brittle, and it is highly recommended that they NOT be utilized as structural elements in any application. Their thermal stability is the poorest of all the magnetic families, but ferrite magnets may be utilized in environments up to 300 °C (570 °F). The dimensional repeatability of ferrite magnets that as pressed components is difficult to control, consequently, components requiring tight tolerances necessitate secondary grinding operations to assure conformity.
SDM Advantages
• Strategic cooperation with China's No.1 rare earth miner CHINALCO, which enables us strong and safe backup for rare earth raw materials cost stability, 3 x -3% annual price down guaranteed.
• ISO/TS 16949, VDA 6.3, ISO9001, ISO14001 certified company, RoHS, REACH, SGS, FDA complied product.
• 0 PPM performance for General Motor's OEM since 2010, remarkable customers such as SIEMENS, BMW, REGAL BELOIT, NIDEC, S&T Motiv.
• Over 100 million neodymium magnets delivered to American, European, Asian and African countries.
• One stop service from R&D to mass production.
Quality Assurance
• ISO9001, ISO14001, ISO/TS16949, TUV, SGS, RoHS.
Customized Ferrite Magnets and Ferrite Magnetic Assemblies with fast delivery time of 7-15 days.
SDM Reliability & Workshop
Standard Packaging
• Standard packaging for all Ferrite magnets and Ferrite magetic assemblies.
• Shielding box and wooden box to protect the Ferrite magnets during shipping.
Shipping Methods
• Contract price with FedEx, DHL, UPS and TNT to minimum your shipping cost.
• Experienced shipping forwarder for Ocean and Air shipments.
Exhibitions
• CWIEME BERLIN every year, Germany.
• HANNOVER MESSE every year, Germany.
• CWIEME CHICAGO every year, USA.
You are more than welcome to visit us at above exhibitions every year, we look forward to a face to face meeting with you.
Flexible Payment
We accept T/T, Paypal, Western Union, ESCROW and L/C.
Company Information
SDM Magnetics Co., Ltd. is a leading Chinese manufacturer of high performance permanent magnets and magnetic assemblies with ISO9001:2008, ISO/TS 16949 and ISO14001 certificates. SDM serves a variety of markets from consumer electronics, industrial automation, automotive, green energy, household appliances, medical, aerospace and telecommunications. SDM's magnets are used in motors, speakers, generators, sensors, compressors, MRI, magnetic chucks and separators etc.
To meet the more and more demanding markets, SDM has been concentrating on manufacturing technologies for quality stability and cost reduction. Since 2010 the company has been supplying magnets to General Motors' OEM with 0 PPM. With Dysprosium infiltration technology, we are able to offer competitive prices for high grade Neodymium magnets. The company has also built up a strategic cooperation with China's No.1 rare earth miner CHINALCO, which gives us strong and safe backup for rare earth raw materials.
SDM Magnetics now manufactures a comprehensive range of magnetic products including:
·Neodymium Magnet
·Injection Molding Magnets
·Samarium Cobalt
·AlNiCo (Aluminum Nickel Cobalt)
·Magnetic Assemblies
Over the last ten years SDM export 85% of its products to American, European, Asian and African countries.With such wide range of magnetic material options, our professional technicians are available to help solve your magnetic needs and choose the most cost effective material for you.
How to Find us ?
Our manufacturing plants are located in Tonglu, Hangzhou which are only one hour by car from Hangzhou airport or railway station.
We are also only one hour by train from Shanghai or Ningbo, pickup and drop off at Hangzhou Air/Train stations are available if you are traveling to Hangzhou from other cities in China.
FAQ
1: How fast can I get a reply?
You will receive our reply within 15 minutes during our work time 08:00 - 18:00(UTC-8).
2: Can I get free samples?
Free samples are available at SDM warehouse. However it may take minimum 7 days for production if your size is not on our stock list.
3: Are you able to offer best prices?
Magnets are functional products, the costs depend on how strong the materials you need. We believe the most suitable is the best, therefore SDM is keen to offer best prices to meet your target.
4: Are you able to provide best quality?
At SDM you receive products under guarantee of ISO9001, ISO/TS16949 systems.
5: What are your best lead-times?
Immediately shipments are available for stock magnets. For fresh materials, we need 7-15 days for production.
6: How can you make sure that my money is safe with you?
As an Alibaba Trade Assurance member, your funds are under protection of Alibaba group. Payment will not be released to vendor until buyer confirms receipt and good material of delivery.
Magnetic and Physical Properties for Sintered Ferrite magnet
Chinese Standard| Grade | Max Energy Product BH(max) kJ/m3 (MGOe) | Remanence Br mT (KGs) | Coercive Force Hcb kA/m (kOe) | Intrinstic Coercive Force Hcj kA/m (KOe) |
| Y10T | 6.5-9.5 (0.8-1.2) | 200-235 (2.0-2.35) | 125-160 (1.57-2.01) | 210-280 (2.64-3.52) |
| Y20 | 18.0-22.0 (2.3-2.8) | 320-380 (3.2-3.8) | 135-190 (1.70-2.38) | 140-195 (1.76-2.45) |
| Y22H | 20.0-24.0 (2.5-3.0) | 310-360 (3.1-3.6) | 220-250 (2.77-3.14) | 280-320 (3.52-4.02) |
| Y23 | 20.0-25.5 (2.5-3.2) | 320-370 (3.2-3.7) | 170-190 (2.14-2.38) | 190-230 (2.39-2.89) |
| Y25 | 22.5-28.0 (2.8-3.5) | 360-400 (3.6-4.0) | 135-170 (1.70-2.14) | 140-200 (1.76-2.51) |
| Y26H | 23.0-28.0 (2.9-3.5) | 360-390 (3.6-3.9) | 220-250 (2.77-3.14) | 225-255 (2.38-3.21) |
| Y27H | 25.0-29.0 (3.1-3.7) | 370-400 (3.7-4.0) | 205-250 (2.58-3.14) | 210-255 (2.64-3.21) |
| Y30 | 26.0-30.0 (3.3-3.8) | 370-400 (3.7-4.0) | 175-210 (2.20-2.64) | 180-220 (2.26-2.77) |
| Y30BH | 27.0-30.0 (3.4-3.7) | 380-390 (3.8-3.9) | 223-235 (2.80-2.95) | 231-245 (2.90-3.08) |
| Y30-1 | 27.0-32.0 (3.4-4.0) | 380-400 (3.8-4.0) | 230-275 (2.89-3.46) | 235-290 (2.95-3.65) |
| Y20-2 | 28.5-32.5 (3.5-4.0) | 395-415 (3.95-4.15) | 275-300 (3.46-3.77) | 310-335 (3.90-4.21) |
| Y32 | 30.0-33.5 (3.8-4.2) | 400-420 (4.0-4.2) | 160-190 (2.01-2.38) | 165-195 (2.07-2.45) |
| Y33 | 31.5-35.0 (4.0-4.4) | 410-430 (4.1-4.3) | 220-250 (2.77-3.14) | 225-255 (2.83-3021) |
| Y35 | 30.0-32.0 (3.8-4.0) | 400-410 (4.0-4.1) | 175-195 (2.20-2.45) | 180-200 (2.26-2.51) |
| Grade | Remanence Br mT (KGs) | Coercive Force Hcb kA/m(kOe) | Instrinsitc Coercive Force Hcj kA/m(kOe) | Max Energy Product BH(max) kJ/m3(MGOe) |
| C | 230(2.3) | 148(1.86) | 258(3.5) | 8.36(1.05) |
| C5 | 380(3.8) | 191(2.4) | 199(2.5) | 27.0(3.4) |
| C7 | 340(3.4) | 258(3.23) | 318(4.00) | 21.9(2.75) |
| C8(=C8A) | 385(3.85) | 235(2.95) | 242(3.05) | 27.8(3.5) |
| C8B | 420(4.2) | 232(2.913) | 236(2.96) | 32.8(4.12) |
| C9 | 380(3.8) | 280(3.516) | 320(4.01) | 26.4(3.32) |
| C10 | 400(4.0) | 288(3.617) | 280(3.51) | 30.4(3.82) |
| C11 | 430(4.3) | 200(2.512) | 204(2.56) | 34.4(4.32) |
| Grade | Remanence Br mT(KGs) | Coercive Force Hcb KA/m(KOe) | Intrinsic Coercive Force Hcj KA/m(KOe) | Max Energy Product BH(max) KJ/m3(MGOe) |
| HF8/22 | 200-220 (2.00-2.20) | 125-140 (1.57-1.76) | 220-230 (2.76-2.89) | 6.5-6.8 (0.8-1.1) |
| HF20/19 | 320-333 (3.20-3.33) | 170-190 (2.14-2.39) | 190-200 (2.39-2.51) | 20.0-21.0 (2.5-2.7) |
| HF20/28 | 310-325 (3.10-3.25) | 220-230 (2.76-2.89) | 280-290 (3.20-3.64) | 20.0-21.0 (2.5-2.7) |
| HF22/30 | 350-365 (3.50-3.65) | 255-265 (3.20-3.33) | 290-300 (3.64-3.77) | 22.0-23.5 (2.8-3.0) |
| HF24/16 | 350-365 (3.50-3.65) | 155-175 (1.95-2.20) | 160-180 (2.01-2.26) | 24.0-25.5 (3.0-3.2) |
| HF24/23 | 350-365 (3.50-3.65) | 220-230 (2.76-2.89) | 230-240 (2.89-3.01) | 24.0-25.5 (3.0-3.2) |
| HF24/25 | 360-370 (3.60-3.70) | 260-270 (3.27-3.39) | 350-360 (4.40-4.52) | 24.0-25.5 (3.0-3.2) |
| HF26/16 | 370-380 (3.70-3.80) | 155-175 (1.95-2.20) | 160-180 (2.01-2.26) | 26.0-27.0 (3.2-3.4) |
| HF26/18 | 370-380 (3.70-3.80) | 175-190 (2.20-2.39) | 180-190 (2.26-2.39) | 26.0-27.0 (3.3-3.4) |
| HF26/24 | 370-380 (3.70-3.80) | 230-240 (2.89-3.01) | 240-250 (3.01-3.14) | 26.0-27.0 (3.3-3.4) |
| HF26/26 | 370-380 (3.70-3.80) | 230-240 (2.89-3.01) | 260-270 (3.27-3.39) | 26.0-27.0 (3.3-3.4) |
| HF26/30 | 385-395 (3.85-3.95) | 260-270 (3.27-3.39) | 300-310 (3.77-3.89) | 26.0-27.0 (3.3-3.4) |
| HF28/26 | 385-395 (3.85-3.95) | 250-265 (3.14-3.33) | 260-275 (3.27-3.45) | 28.0-30.0 (3.5-3.8) |
| HF28/28 | 385-395 (3.85-3.95) | 260-270 (3.27-3.39) | 280-290 (3.50-3.60) | 28.0-30.0 (3.5-3.8) |
| HF30/26 | 395-405 (3.95-4.05) | 250-260 (3.14-3.33) | 260-270 (3.27-3.39) | 30.0-31.5 (13.8-3.9) |
| HF32/17 | 410-420 (4.10-4.20) | 160-180 (2.01-2.26) | 165-175 (2.07-2.20) | 32.0-33.0 (4.0-4.1) |
| HF32/22 | 410-420 (4.10-4.20) | 215-225 (2.70-2.83) | 220-230 (2.76-2.89) | 32.0-33.0 (4.0-4.1) |
| HF32/25 | 410-420 (4.10-4.20) | 240-250 (3.01-3.14) | 250-260 (3.14-3.27 | 32.0-33.0 (4.0-4.1) |
