Technical specification:
Shape: Disc round
Diameter: 19.05mm (3/4 Inch)
Thickness: 6.35mm (1/4 Inch)
Default tolerance: +/-0.1mm Or customize as required
Plating: Uncoated
Magnetism direction: Axial Or Customized
Material: Alnico (aluminum-nickel-cobalt)
Grade: Alnico 8 (LNG40), anisotropic type
Magnetic Characteristics: Br: 1,250mT, Hcb: 48kA/m, BH: 40KJ/m³
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, Temperature coefficient of Br and iHc <±0.03%
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
| 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 |