Product Details:
Alnico magnets, composed of primarily aluminum, nickel, and cobalt, were developed in the 1940's. This class of magnet remains a preferred material because of it's excellent temperature stability, high magnetic flux density, and resistance to corrosion. Alnico magnets are manufactured through a casting or sintering process. The casting process allows for the magnet to be manufactured into intricate and complex shapes, which are not possible with other magnetic materials.
Magnetic Feature: 1) Material: Aluminum, nickel, cobalt and iron with varying additions of other elements; 2) Temperature: The max operation temp is up to 200 degree centigrade or 380 curie temperature; 3) Grade: AlNiCo3, AlNiCo5 AlNiCo8 AlNiCo9 and so on. 4) Shape: Ring, block, disc, bar and so on; 5) Size: According to customers' request; 6) Coating: Colour of metal casting 7) According to customer's request. We can supply different size magnetic hook. 8) Good quality with competitive price and best delivery date. 9) Application: Sensors, motors, rotors, wind turbines, wind generators, loudspeakers, magnetic holder, filters automobiles and so on. 10) Certificate: SGS test report Applications: 1) Inner magnetic voltmeter/ammeter, measuring instrument, avometer, flow meter. 2) Magnetic sensors, polarized relay, terperature and pressure controller. 3) Buzzer of mobile phone, hearing aids, mini speaker 4) Lighter of automobile, odometer of automobile and motorcycle, permanent motor, adsorptive appliance 5) Widely applied in high stability field as aviation, space flight and military technologhy In addition, due to the good corrosion resistance characteristic, non-coating is need for surface protection. Size Specifications: | Ring | Out Diameter(mm) | Inner Diameter(mm) | Thickness(mm) |
| Maximum | 200 | 150 | 120 |
| Minimum | 12 | 4 | 3 |
| 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 |
Typical Magnetic Performance Range for Cast Alnico Magnet, other standard | Grade | Br | Hcj | BHmax | USA stand | IEC stand | DIN stand | UK stand |
| kGs | mT | Oe | kA/m | KJ/m3 | MGOe | MMPA | IEC | DE | UK |
| LN10 | 6.5 | 650 | 530 | 42 | 10 | 1.2 | AlNiCo3 | AlNiCo9/3 | / | / |
| LNG11 | 7.2 | 720 | 480 | 37 | 11.2 | 1.4 | AlNiCo1 | AlNiCo8/4 | AlNiCo120 | AlNi |
| LNG13 | 7.0 | 700 | 620 | 50 | 13 | 1.6 | AlNiCo2 | AlNiCo12/6 | AlNiCo160 | AlNiCo |
| LNGT18 | 5.8 | 580 | 1250 | 100 | 18 | 2.2 | I. AlNiCo 8 | AlNiCo17/9 | / | / |
| LNG16 | 8.0 | 800 | 660 | 53 | 16 | 2.0 | [AlNiCo4] | / | / | / |
| LNG34 | 11.8 | 1180 | 550 | 44 | 34 | 4.25 | [AlNiCo5C] | / | / | / |
| LNG37 | 12.0 | 1200 | 600 | 48 | 37 | 4.65 | AlNiCo37/5 | AlNiCo500
| Alcomax2 |
| LNG40 | 12.2 | 1220 | 630 | 50 | 40 | 5.0 | AlNiCo5 | / | / |
| LNG44 | 12.5 | 1250 | 650 | 52 | 44 | 5.5 | AlNiCo44/5 | Alcomax3 |
| LNG52 | 13.0 | 1300 | 690 | 55 | 52 | 6.5 | AlNiCo5DG | AlNiCo52/6 | AlNiCo600 | Alcomax3 S.C. |
| LNG60 | 13.3 | 1330 | 750 | 60 | 60 | 7.5 | AlNiCo5-7 | / | AlNiCo700 | Columax |
| LNGT28 | 10.5 | 1050 | 700 | 56 | 28 | 3.5 | AlNiCo6 | AlNiCo26/6 | AlNiCo400 | Alcomax4 |
| LNGT30 | 10.5 | 1050 | 750 | 60 | 30 | 3.75 |
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| LNGT32 | 8.0 | 800 | 1280 | 102 | 32 | 4.0 | AlNiCo8 | AlNiCo38/11 | AlNiCo350 | Hycomax2 |
| LNGT40 | 8.2 | 820 | 1400 | 112 | 40 | 5.0 |
| LNGT44 | 8.8 | 880 | 1540 | 123 | 44 | 5.5 | AlNiCo8B | / | AlNiCo450 | Hycomax3 |
| LNGT48A | 9.3 | 930 | 1540 | 123 | 48 | 6.0 | AlNiCo8HE |
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| LNGT48B | 8.5 | 850 | 1650 | 132 | 48 | 6.0 |
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| LNGT60 | 9.0 | 900 | 1380 | 110 | 60 | 7.5 | AlNiCo60/11 | / | / |
| LNGT72 | 10.5 | 1050 | 1410 | 112 | 72 | 9.0 | AlNiCo9 | / | / | / |
| LNGT80 | 10.8 | 1080 | 1540 | 123 | 80 | 10.0 |
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| LNGT88 | 11.0 | 1100 | 1575 | 126 | 88 | 11.0 |
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| LNGT92 | 11.5 | 1150 | 1575 | 126 | 92 | 11.5 |
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| LNGT36J | 7.0 | 700 | 1750 | 140 | 36 | 4.5 | AlNiCo8HC | AlNiCo36/15 | / | / |
| LNGT40J | 7.2 | 720 | 1900 | 152 | 40 | 5.0 |
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| LNGT44J | 8.2 | 820 | 1800 | 144 | 44 | 5.5 | AlNiCo44/15 | / | / |
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 
