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/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 |
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
Alnico Magnet Applications: Precision magnetic sensors for balance Guitar pickups Sensitive Relays and transformers Speakers
Alnico Magnetic Characteristics.pdf 
