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Magnetic Alnico Rod Magnets used in High Precision Magnetic Sensors For Balance

Magnetic Alnico Rod Magnets:
Material:Cast alnico magnet
Magnetism direction: Customzied Specific Requirements
Tolerance: +/-0.05mm
Application: Magnetic Sensors For Balance
  • DunBen

Alnico Magnets characteristics:

  • Very temperature stable, great for high heat applications
  • Maximum working temperature: 975° -1020°F
  • May be ground to size
  • Does not lend itself to conventional machining (hard & brittle)
  • High residual induction and energy product compared to ceramic. Low coercive force compared to ceramic and rare earth materials (more subject to demagnetization)
  • Most common grades of alnico are 5 & 8
  • Applications: sensors, meters,generators, educational,telcomunications,
  Alnico Magnetic Characteristics.pdf

Physical Properties of Cast Alnico
Curie Temperature () 760-890
Max. Operating Temperature () 450-550
Resistivity (μohm.cm) 47-54
Hardness (Hv) 520-630
Density (g/cm⊃3;) 6.90-7.30
Relative Recoil Permeability (μrec) 1.70-4.70
Saturation Field Strength (kOe,kA/m) 2.7-6.3/215-500
Temperature Coefficient of Br (%/) -0.025 ~ -0.02
Temperature Coefficient of iHc (%/) +0.01 ~ +0.03
Cast Alnico Process Chart
Raw material -> forming- >smelting-> heat treatment-> surface treatment->precision grinding->inspection ->packing
Sintered Alnico Process Chart
Raw material ->powder-> forming-> sintered- >heat treatment-> surface treatment->precision grinding –>inspection- >packing

重传alnico process flow

Alnico Magnet Applications:
Precision magnetic sensors for balance
Guitar pickups
Sensitive Relays and transformers
alnico application.JPG




  Hang Zhou XiaoShan Dunben Magnet  Co., Ltd 
 1702, Unit 2, Building 1, Dacheng Mingzuo, Shiixn Road, Xiaoshan, Hangzhou, Zhejiang, China
  86-571-82750965 
  86-571-82751287



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