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Alnico Magnets (Aluminium-Nickel-Cobalt Magnets)

 

Catalogue of Alnico Magnets (pdf) Magnetic Properties (Material grades) of Alnico Magnets Typical Demagnetization Curves Customer Specific Magnets Direction of Magnetization More Information on Alnico Magnets Other Magnetic Materials

Material Information

Production by casting or powder metallurgical techniques An alloy composed of matrix of Al-Ni-Fe-Co Excellent stability over a wide temperature range higher than 500°C Strong corrosion resistance capability without coating for surface protection Good resistance to demagnetization from vibration and shock Good flux density at an reasonable cost Very hard & brittle

Typical Physical Properties

Curie Temperature (°C)	860
Maximum Operating Temperature (°C)	525-550
Resistivity (µ ohm.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 (%/°C)	-0.025 ~ -0.02
Temperature Coefficient of iHc (%/°C)	+0.01 ~ +0.03

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