Alnico Magnet Grades
Alnico magnets are composed of aluminum, nickel, and cobalt. The main advantage of Alnico is its’ low temperature coefficient and the wide operating temperature range from – 273°C to 550°C. The Alnico magnet grades we supply are in the tables below. Alnico 5 and Alnico 8 are anisotropic grades, designed to produce high magnetic output in a specified direction. If you have questions, please contact us. We are always happy to assist you!
Cast Alnico | Br (Gauss) | Hc (Oe) | Hci (Oe) | (BH)max (MGOe) | Reversible Temperature Coefficients Br%/°C | Reversible Temperature Coefficients Hcj%/°C | Continuous Working Temp. Max °C | BH Curve |
A-2 | 6,800 – 7,300 | 550 – 600 | 570 – 620 | 1.5 – 1.7 | -0.03 | -0.02 | 450 | |
A-3 | 6,000 – 6,450 | 500 – 550 | 520 – 570 | 1.2 – 1.5 | -0.03 | -0.02 | 500 | |
A-5 | 12,000 – 12,900 | 600 – 660 | 620 – 680 | 4.5 – 5.0 | -0.02 | 0.01 | 525 | |
A-5DG | 12,800 – 13,700 | 680 – 730 | 690 – 740 | 6.0 – 6.6 | -0.02 | 0.01 | 525 | |
A-57 | 13,000 – 13,900 | 700 – 750 | 720 – 700 | 6.5 – 7.2 | -0.02 | 0.01 | 525 | |
A-8 | 7,900 – 8,500 | 1,450 – 1,550 | 1,500 – 1,600 | 5.3 – 5.9 | -0.02 | 0.01 | 550 |
Sintered Alnico | Br (Gauss) | Hc (Oe) | Hci (Oe) | (BH)max (MGOe) | Reversible Temperature Coefficients Br%/°C | Reversible Temperature Coefficients Hcj%/°C | Continuous Working Temp. Max °C | BH Curve |
A-2S | 6,800 – 7,300 | 550 – 600 | 570 – 620 | 1.5 – 1.7 | -0.03 | -0.02 | 450 | |
A-5S | 11,800 – 12,600 | 600 – 650 | 610 – 660 | 4.2 – 4.5 | -0.02 | 0.01 | 525 | |
A-6S | 9,000 – 9,700 | 680 – 730 | 690 – 740 | 3.4 – 3.8 | -0.02 | 0.01 | 525 | |
A-8S | 7,800 – 8,400 | 1,430 – 1,530 | 1,480 – 1,580 | 4.6 – 5.1 | -0.02 | 0.01 | 550 |