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Cast Alnico Magnet
Alnico magnets are made primarily from aluminum, nickel, cobalt, copper, iron and sometimes titanium.
Possessing the following characteristics:
1) High residual induction
2) Excellent temperature stability
3) Wide range of working temperatures, up to 550C
4) Good corrosion resistance
5) Wide range of complex shapes and sizes available
6) Can be plated or painted
7) Easy of magnetization
8) High field strengths at medium prices
9) Lower initial tooling cost
Alnico magnets are widely used in motor, sensor, meter, telephone and speaker, teaching, detector, MRI, holding system, etc.
There are two different manufacturing process for Alnico: Cast and Sintered Alnico.
Cast Alnico is manufactured by pouring a molten metal alloy into a mold and then further processing it through various heat-treat cycles. The resulting magnet has a dark gray exterior appearance, and may have a rough surface. Machined surfaces have a shiny appearance similar to steel.
Process Flow: Raw Material-Mixing-Melting-Heat Treatment-Magnetic Testing-Grinding-Inspection-Packing and Shipping
| Typical Magnetic Performance for Cast Alnico | |||||||||
| Grade | Br | Hc | (BH)max | Curie Temp | Work Temp | US standard | |||
| mT | Gs | KA/m | Oe | KJ/m 3 | MGOe | °C | °C | MMPA | |
| Equivalent | |||||||||
| *LN9 | 680 | 6800 | 30 | 380 | 9 | 1.13 | 810 | 450 | Alnico 3 |
| *LN10 | 650 | 6500 | 42 | 530 | 10 | 1.2 | 810 | 450 | Alnico 3 |
| *LNG12 | 720 | 7200 | 45 | 500 | 12.4 | 1.55 | 810 | 450 | Alnico 2 |
| *LNG13 | 700 | 7000 | 50 | 620 | 13 | 1.6 | 810 | 450 | Alnico 2 |
| LNG16 | 800 | 8000 | 53 | 660 | 16 | 2 | 850 | 450 | Alnico 4 |
| LNG34 | 1180 | 11800 | 44 | 550 | 35 | 4.3 | 860 | 525 | Alnico 5C |
| LNG37 | 1200 | 12000 | 48 | 600 | 37 | 4.65 | 860 | 525 | Alnico 5 |
| LNG40 | 1250 | 12500 | 48 | 600 | 40 | 5 | 860 | 525 | |
| LNG44 | 1250 | 12500 | 52 | 650 | 44 | 5.5 | 860 | 525 | |
| LNG52 | 1300 | 13000 | 56 | 700 | 52 | 6.5 | 860 | 525 | Alnico 5 DG |
| LNG60 | 1350 | 13500 | 59 | 740 | 60 | 7.5 | 860 | 525 | Alnico 5~7 |
| *LNGT18 | 580 | 5800 | 100 | 1250 | 18 | 2.2 | 860 | 550 | Alnico 8 |
| LNGT28 | 1000 | 10000 | 58 | 720 | 28 | 3.5 | 860 | 525 | Alnico 6 |
| LNGT32 | 800 | 8000 | 100 | 1250 | 32 | 4 | 860 | 550 | Alnico 8 |
| LNGT38 | 820 | 8200 | 110 | 1380 | 38 | 4.75 | 860 | 550 | |
| LNGT44 | 880 | 8800 | 120 | 1500 | 44 | 5.5 | 860 | 550 | |
| LNGT60 | 900 | 9000 | 110 | 1380 | 60 | 7.5 | 860 | 550 | |
| LNGT72 | 1050 | 10500 | 112 | 1400 | 72 | 9 | 860 | 550 | Alnico 9 |
| LNGT82 | 1100 | 11000 | 120 | 1500 | 82 | 10.25 | 860 | 550 | Alnico 9 |
| LNGT36J | 700 | 7000 | 140 | 1750 | 36 | 4.5 | 860 | 550 | Alnico 8 HC |
| If special Method Applied,customized properties can be achieved. | |||||||||
| * =Isotropic others =Anisotropic | |||||||||
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