Alnico 5 Rotor Cast Alnico Magnet for Holding And Magnetic Motors

Alnico magnets are made primarily from aluminum, nickel, cobalt, copper, iron and sometimes titanium. Among all the available magnetic materials, they have high magnetic flux density, resistance to corrosion and excellent temperature stability, the maximum working temperature up to 600℃. Alnico magnet is widely used in all kinds of sensors and meters, electronics, instruments, medical instruments, teaching, automobile, aviation, martial and other applications.
There are two different manufacturing process for Alnico: Cast and Sintered Alnico. Cast Alnico can be made into intricate and complex shapes, which is not possible with other magnetic materials. Sintered Alnico is manufactured using a powder metallurgy process. while slightly weaker than cast alnico, It exhibits superior mechanical characteristics .
 
 
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

 

1. Comparatively high magnetic properties

2. Magnetic rotors with 2 poles to 12 poles 

3. Tight tolerance of thickness as +/-0.01mm

 

 

Applications:

 

Magnetic Motors and generators

Holding magnets

 

 

Specifications:

 

Part No.	Outer Dia.(MM)	Inner Dia(MM)	Thickness(MM)	Poles	Lifting
R001	25.4	6.4	19.01	4	7.3
R002	31.75	6.35	19.05	6	10.8
R003	38.1	10.00	22.10	6	17.7
R004	46.02	8.00	31.75	6	23.1
R005	50.8	12.7	31.75	8	31.5
R006	76.2	20.00	50.8	8	50

 

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/cm³)	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

 

Competitive Advantage:

 

1. High Temperature resistance

2. Comparatively high magnetic properties

3. Dimensional Stability