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Cast AlNCo Disc Magnet and Plug Magnet

Material: LNGT18 (Anico8)
Magnetic Characteristics: Br:580 mT, Hcb:80KA/m, BH:18KJ/m³
Pole Orientation: Axially magnetized
Size: Dia 19 x 6.35 mm
Tolerances: +/-0.1
Maximum Normal Operating Temperature: 550 degree C

AlNiCo magnet has extrodinary temperature stability than the other types of magnets so it is mostly used in high temperature toolings or oil field applications where high temperature is present. AlNiCo magnet is also used as guitar pickups. 
Generally speaking, AlNiCo magnets are more fragile than neodymium magnets. There is no coating for this magnet.

Cast Alnico Magnets  Key Advantages:


· Excellent temperature stability

· Strong corrosion resistance

· Excellent capacity

· High density and magnetic properties

· Shorter production lead time

· Temperature factor of Br is the smallest among all the permanent magnets

· Cast Alnico magnets can be produced in relatively complex shapes

· Tooling for cast Alnico magnets is relatively low, since sand molds are  generally used for the casting process.

Alnico Magnetic Characteristics.pdf

Size Specifications:


Diameter (MM) Thickness/Height/Length (MM)
1.5-3.0 1.0-25.0
3.0-5.0 1.0-102.0
5.0-30.0 1.0-300.0
30.0-50.0 3.0-300.0
50.0-100.0 5.0-300.0
100.0-260.0 20.0-400.0


Should you need different grade or size of AlNico magnets? we may custom make for you per your requirements.

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 Magnet Applications:
 automobile parts, instrumentation, electroacoustics, motor, teaching and aerospace military, etc 

Cast Alnico Process Chart
Raw material -> forming- >smelting-> heat treatment-> surface treatment->precision grinding->inspection ->packing
重传alnico process flow



  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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