Cylindrical AlNiCo can be applied in magnetic latching relay, watt-hour meters, water meters, counters, reed switch and sensors.
Performance of Cast Alnico Magnets
| CharacterIstics Model | Max. Energy Product | Br (Residual induction) | Hcb (Coercive Force) | Hcj (Intrinsic coercive Force) | Density | Temp.Coeffienct of Br. | Curie point | Remark | |
|---|---|---|---|---|---|---|---|---|---|
| (MGOe) | (KGs) | (KOe) | (KOe) | g/cm3 | %/K | °C | Isotropic | ||
| SAlNiCo4/1 | 0.40-0.60 | 8.7-8.9 | 0.11-0.14 | 0.13-0.15 | 6.8 | -0.02 | 750 | ||
| SAlNiCo8/5 | 1.07-1.19 | 5.3-6.2 | 0.57-0.63 | 0.59-0.65 | 6.8 | -0.02 | 750 | ||
| SAlNiCo10/5 | 1.19-1.38 | 6.3-7.0 | 0.63-0.73 | 0.63-0.73 | 6.8 | -0.02 | 780 | ||
| SAlNiCo12/5 | 1.38-1.63 | 7.0-7.5 | 0.62-0.70 | 0.66-0.73) | 7.0 | -0.02 | 800 | ||
| SAlNiCo14/5 | 1.63-1.88 | 7.3-8.0 | 0.59-0.63 | 0.63-0.67 | 7.1 | -0.02 | 790 | ||
| SAlNiCo14/6 | 1.76-2.00 | 6.2-8.1 | 0.70-0.81 | 0.73-0.83 | 7.1 | -0.02 | 790 | ||
| SAlNiCo14/8 | 1.76-2.00 | 5.5-6.1 | 0.94-1.11 | 1.00-1.16 | 7.1 | -0.01 | 850 | ||
| SAlNiCo18/10 | 2.00-2.39 | 5.7-6.2 | 1.16-1.26 | 1.24-1.34 | 7.2 | -0.01 | 860 | ||
| SAlNiCo29/6 | 3.64-4.15 | 9.7-12 | 0.73-0.80 | 0.75-0.83 | 7.2 | -0.02 | 860 | Anisotropic | |
| SAlNiCo30/6 | 3.77-4.27 | 10-11 | 0.73-0.80 | 0.75-0.83 | 7.2 | -0.02 | 860 | ||
| SAlNiCo42/10 | 5.27-5.77 | 9.5-11 | 1.26-1.38 | 1.30-1.43 | 7.2 | -0.01 | 860 | ||
| SAlNiCo33/11 | 4.14-4.77 | 7-8 | 1.34-1.45 | 1.39-1.50 | 7.2 | -0.01 | 860 | ||
| SANiCo35/5 | 4.40-4.90 | 11-12 | 0.60-0.65 | 0.63-0.68 | 7.2 | -0.02 | 850 | ||
| SAlNiCo37/15 | 4.65-5.15 | 7.0-8.0 | 1.76-1.85 | 1.88-1.98 | 7.2 | -0.01 | 870 | ||
| SAlNiCo39/12 | 4.90-5.40 | 8.3-9.0 | 1.45-1.54 | 1.50-1.60 | 7.25 | -0.01 | 860 | ||
| SAlNiCo44/12 | 5.53-6.03 | 9-9.5 | 1.50-1.60 | 1.56-1.66 | 7.25 | -0.01 | 860 | ||
| SAlNiCo40/15 | 5.02-6.03 | 7.5-8.5 | 1.80-1.90 | 1.95-2.05 | 7.2 | -0.01 | 870 | ||
| SAlNiCo44/15 | 5.53-6.03 | 8.0-8.8 | 1.86-2.00 | 1.95-2.05 | 7.2 | -0.01 | 870 | ||
Key Advantages
Sintered Alnico Magnets:
- Excellent temperature stability
- Strong corrosion resistance
- The maximum working temperature is up to 500°c
- Fine grain
- Compact crystal.
- Excellent magnetic consistence and evenness.
- Suitable for small volume and complex shape magnets.
Cast Alnico Magnets:
- Excellent temperature stability
- Strong corrosion resistance
- The maximum working temperature is up to 500°c
- 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.
Quick Leads
- Density-7.34 g/cm3
- Manufacturing process - casting (most common), or sintering.
- Various shapes- blocks, bars, discs, rings, horseshoes, cylinders, etc.
- Wide range of grades- from about 0105 to 0519. (First 2 digits represent BH.max, and second two digits represent Intrinsic Coercivity, Hci.)
- Saturation magnetizing field required - about 5kOee.
Common Applications
Holding magnets Separators Sensors Security systems MRI Relays Magnetos
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