Iron Chromium Cobalt Magnet – FeCrCo/Crovac as a new type magnet has come into the world in 1970’s. It is widely used in space, aviation, shipping instrument, automobile instrument, magnetic motor, compass, computer embroider machine and signal system etc.
FeCrCo/Crovac has good plasticity, ductility and machining ability. And can be drilled, planed, stamped and other machining operations. The minimum diameter can be 0.05 mm and the thickness of strip can be 0.1 mm, especially suit for tinny elements with accurate dimensions and complicated shapes, such as strip, wire, bar and tube etc.
FeCrCo/Crovac has excellent temperature stability, good corrosion resistance and high curie temperature(around 680℃). The maximum working temperature is 400℃.
Ferrochrome known as transformers in permanent magnets is the advantage of the magnetic material, easy metal processing, especially drawing and pulling the tube is the other permanent magnetic materials can not be compared with it.
Disadvantages:
Poor performance
Remanence Br = 13000-14000 GS
Coercivity Hc = 650 (Oe) about 52 KA / M
BHmax = 6.0 MGOe
Physical properties, hardness as 304 stainless steel the same 30-35 easy processing
Application:
Electric industry;
Tele communication;
Micro motor;
Loud speaker;
Automobile speedometer etc.
Magnetic properties
| Grade | Br | Hcb | Hcj | (BH)max | Remark | ||||
| mT | Gs | kA/m | Oe | kA/m | Oe | kJ/m3 | MGOe | ||
| FeCrCo4/1 | 850-1000 | 8500-10000 | 8-31 | 100-390 | 9-32 | 110-400 | 4-8 | 0.5-1.0 | Isotropic |
| FeCrCo10/3 | 800-900 | 8000-9000 | 31-39 | 390-490 | 32-40 | 400-500 | 10-13 | 1.1-1.6 | |
| FeCrCo12/4 | 750-850 | 7500-8500 | 40-46 | 500-580 | 41-47 | 510-590 | 12-18 | 1.5-2.2 | |
| FeCrCo12/5 | 700-800 | 7000-8000 | 42-48 | 530-600 | 43-49 | 540-610 | 12-16 | 1.5-2.0 | |
| FeCrCo1/1 | 900-1300 | 9000-13000 | 2-8 | 25-100 | 2-8 | 25-100 | 1-9 | 0.1-1.1 | Anisotropic |
| FeCrCo12/2 | 1300-1450 | 13000-14500 | 12-40 | 150-500 | 13-41 | 160-510 | 12-36 | 1.5-4.5 | |
| FeCrCo24/6 | 990-1100 | 9900-11000 | 56-66 | 700-830 | 57-67 | 710-840 | 24-30 | 3.0-3.8 | |
| FeCrCo28/5 | 1100-1250 | 11000-12500 | 49-58 | 610-730 | 50-59 | 620-740 | 28-36 | 3.5-4.5 | |
| FeCrCo44/4 | 1300-1450 | 13000-14500 | 44-51 | 560-640 | 45-52 | 570-650 | 44-52 | 5.5-6.5 | |
| FeCrCo48/5 | 1320-1450 | 13200-14500 | 48-53 | 600-670 | 49-54 | 610-680 | 48-55 | 6.0-6.9 | |
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