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General Physical Properties of Alnico magnets;
Manufactured by casting or powder metallurgy
Alloy consisting of AI-Ni-Fe-Co
Very hard and brittle
Low demagnetization resistance
Excellent temperature stability
Good machinability
Average magnetic properties
Casting And Sintering Alnico Magnets Physical Properties | |||
Property | Units | Value Sintered Alnico | Value Cast Alnico |
Vickers Hardness | Hv | 440 | 440-620 |
Density | g/cm3 | 6.8 – 7.0 | 6.9 – 7.3 |
Curie Temp TC | °C | 810 – 860 | 740 – 860 |
Curie Temp TF | °F | 1,400 – 1,580 | 1,460 – 1,580 |
Specific Resistance | μΩ⋅Cm | 50- 70 | 45 – 75 |
Bending Strength | kN/mm2 | 0.35 – 0.76 | 0.05 – 0.31 |
Tensile Strength | kN/mm2 | 0.35- 0.45 | 0.02 – 0.15 |
Thermal Expansion | °C-1 | +11.0 to +12.4 x10-6 | +11.0 to +13.0 x10-6 |
The listed values are approximate and should be used as a reference. Any magnetic or physical characteristics should be substantiated before selecting a magnet material. | |||
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