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AlNiCo Magnets

                AlNiCo describes a family of material, which is derived from a common base composition comprising of aluminum, nickel, cobalt and iron with varying additions of other elements. By varying the composition it is possible to tailor the magnetic properties to meet the needs of a wide variety of end use applications. There are two different manufacturing processes for AlNiCo: Cast AlNiCo can be made into many size and shapes, whereas Sintered AlNiCo is usually restricted to smaller sizes. However, both processes lead themselves to complex geometries and configurations. Standard Sintered AlNiCo has tighter dimensional tolerances due to its processing. It also has slightly lower magnetic properties, but better mechanical strength than Cast AlNiCo products which possess the lowest reversible temperature coefficient magnetism in permanent magnet materials have excellent working temperature up to 600°C. AlNiCo products are widely used in all kinds of meters and other application. Magnetic Properties of Cast Alnico GRADE Br Hcj (BH)max Density U.S.Standard % Change Per C Tc Tw mT Gs KA/m Oe KJ/m3 MGOe g/cm3 Near Br Near Hcj °C °C LN9 680 6800 30 380 9.0 1.13 6.9 AlNiCo 3 -0.03 -0.02 810 450 LN10 600 6000 40 500 10.0 1.2 6.9 -0.03 -0.02 810 450 LN12 720 7200 45 500 12.4 1.55 7.0  AlNiCo 2 -0.03 -0.02 810 450 LN13 700 7000 48 600 12.8 1.60 7.0 -0.03 -0.02 810 450 LN37 1200 12000 48 600 37.0 4.65 7.3  AlNiCo 5 -0.02 +0.02 860 525 LNG40 1250 12500 48 600 40.0 5.00 7.3 -0.02 +0.02 860 525 LNG44 1250 12500 52 650 44.0 5.50 7.3 -0.02 +0.02 860 525 LNG52 1300 13000 56 700 52.0 6.50 7.3 AlNiCo 5DG -0.02 +0.02 86 525 LNG60 1350 13500 59 740 60.0 7.50 7.3 AlNiCo 5-7 -0.02 +0.02 860 525 LNGT28 1000 10000 58 720 28.0 3.50 7.3 AlNiCo 6 -0.025 +0.03 860 525 LNGT36J 700 7000 140 1750 36.0 4.50 7.3 AlNiCo 8HC -0.025 +0.02 860 550 LNGT18 580 5800 100 1250 18.0 2.20 7.3 AlNiCo 8 -0.025 +0.02 86 550 LNGT32 800 8000 100 1250 32.0 4.00 7.3 AlNiCo 8 -0.025 +0.02 860 550 LNGT40 800 8000 110 1380 40.0 5.00 7.3 -0.025 +0.02 860 550 LNG60 900 9000 110 1380 60.0 7.50 7.3 AlNiCo 9 -0.025 +0.02 860 550 LNGT72 1050 10500 112 1400 72.0 9.00 7.3 -0.025 +0.02 860 550     Magnetic Properties of Sintered Alnico GRADE Br Hcj Hcb (BH)max Density % Change Per C Tc REMARKS mT Gs KA/m Oe KA/m Oe KJ/m3 MGOe g/cm3 %/K °C FLN8 520 5200 43 540 40 500 8-10 1.0-1.25 6.8 -0.022 760 ISOTROPIC FLNG12 700 7000 43 540 40 500 12-14 1.5-1.75 7.0 -0.014 810 FLNGT14 570 5700 78 980 76 950 14-16 1.75-2.0 7.1 -0.020 850 FLNGT18 560 5600 90 1130 88 1100 18-22 2.25-2.75 7.2 -0.020 850 FLNG28 1050 10500 47 590 46 580 28-33 3.5-4.15 7.2 -0.016 850 ANISOTROPIC FLNG34 1100 11000 51 640 50 630 34-38 4.3-4.8 7.2 -0.016 890 FLNGT28 1000 10000 57 710 56 700 28-30 3.5-3.8 7.2 -0.020 850 FLNGT31 780 7800 106 1130 104 1300 33-36 3.9-4.5 7.2 -0.020 850 FLNG33J 650 6500 150 1880 136 1700 31-36 4.15-4.5 7.2 -0.020 850 FLNGT38 800 8000 126 1580 123 1550 38-42 4.75-5.3 7.2 -0.020 850 FLNGT42 880 8800 122 1530 120 1500 42-48 5.3-6.0 7.25 -0.020 850