... 2.Excellent demagnetization resistance capability.High coercive force, the max working temp is up to 240°C or says 489 ... , 30UH-40UH, 28EH-38EH, 28AH-35AH4. Shape: Disc(Cylinder), Block, Ring, Countersunk, Segment and more, trapezoid, irregular shape, customized ... shapes are available5. Max. Size shape: Length or Outer diameter 220mm6. Coating:Ni, Zn ...