Presintered Ferrite powder YXC

Specifications of YXC Wet pressing Strontium Ferrite Magnetic Materials

Strontium ferrite powders for wet pressingYXC series strontium ferrite magnetic powders have been designed to produce all grades of hard ferrites. The users will make high quality magnets by adding the provided additives into the powders. Our highly automatic instruments and strict quality control system ensure that the quality is stable and reliable.

Properties of Strontium Ferrite Powder for Wet Pressing

Trade Mark Material Characteristics of products Granularity Forming methods
Br(mT) bHc(kA/m) ihc
(kA/m)
(BH)max
(kJ/m3)
SHR % Pellets
(mm)
Coarse Powder (µm) Fine powder Min
Typical Min Typical Min Typical Min Typical
YXS-2.4B SrFe12O19 380 370 183 167 199 183 27.1 25.5 15.5±1 0.80-0.90 Aniso-
tropic
dry
press
YXS-2.4 SrFe12O19 360 350 223 207 239 223 23.9 22.3 15.5±1 6-12 3-6 0.80-0.90
YXS2.4H SrFe12O19 340 330 255 239 279 255 21.5 19.9 15±1 0.80-0.90
YXS-2.4E SrFe12O19 320 310 239 223 318 294 19.1 17.5 15±1 0.80-0.90
YXS-2.5B SrFe12O19 400 390 191 175 199 183 30.2 28.7 15.5±1 0.80-0.90
YXS-2.5 SrFe12O19 380 370 233 207 239 223 27.1 25.5 15.5±1 0.80-0.90
YXS-2.5H SrFe12O19 360 350 263 247 302 279 23.9 22.3 15±1 0.80-0.90
YXS-2.5E SrFe12O19 340 330 255 239 342 318 21.5 19.9 15±1 0.80-0.90
YXS-2.5U SrFe12O19 320 310 239 223 398 374 19.1 17.5 15±1 0.80-0.90
YXS-3 BaFe12O19 390 380 159 151 163 155 28.7 27.1 12±1 0.90-1.00 Aniso-
tropic
wet
press
YXS-4B SrFe12O19 410 400 191 175 199 183 31.8 30.2 13±1 0.80-0.90
YXS-4 SrFe12O19 390 380 231 215 239 223 28.7 27.1 13±1 6-12 3-6 0.80-0.90
YXS-4H SrFe12O19 370 360 259 243 279 263 25.5 23.9 13±1 0.80-0.90
YXS-4E SrFe12O19 350 340 259 243 318 294 23.1 21.5 12.5±1 0.80-0.90
YXS-5B SrFe12O19 430 420 191 175 199 183 35.0 33.4 13±1 0.75-0.85
YXS-5 SrFe12O19 410 400 231 223 239 231 31.8 30.2 13±1 6-12 3-6 0.75-0.85
YXS-5H SrFe12O19 390 380 283 267 302 279 28.7 27.1 13±1 6-12 3-6 0.75-0.85
YXS-5E SrFe12O19 370 360 279 263 342 318 25.5 23.9 12.5±1 0.75-0.85
YXS-5U SrFe12O19 350 340 263 247 398 374 23.1 21.5 12.5±1 0.75-0.85
YXS-6 SrFe12O19 410 400 271 255 279 263 31.8 30.2 12.5±1 0.70-0.80
YXS-6H SrFe12O19 400 390 294 279 318 294 30.2 28.7 13±1 0.70-0.80

The shrinkage rate on vertical direction is about 13.5%

In case that the granular material is purchased from our company, the particle should be dry ground to 3-5Ám at first, and then be wet ground in a sand grinding mill or ball mill to less than 1 Ám ,and then be wet pressed.If the coarse ground powder is bought, it can be wet ground directly.

  • Before grinding, the grinding mill should be cleaned thoroughly.And any materials from other factories or Impurity should not be mixed into our material
  • Along with the powder (granular powder, and coarse ground powder),we provide the secondary additives in separated bags, users should only add it into powder during grinding according to the requirement.
  • All the necessary secondary additives have been added into the fine powders(<1Ám).So there is no need to add any other material, But two to three hours wet grinding is necessary for better distribution of particles.
  • During pressing, the moisture of slurry should be controlled between 32% to 37%,the pressure required is >4000N/cm2,and the magnetic field density is >560kA/m.
  • Due to the actual sintering temperature measured by various suppliers' instruments are not the same, we can only provide sintering temperature of 1220 deg.C-1270 deg.C for reference.Please note that the proper sintering temperature should be defined in accordance with the status of the sintered sample pill.