What is Iron Chrome Cobalt Magnet ( FeCrCo magnet)?

FeCrCo Magnet is composed of Iron, Chromium, and Cobalt. Raw Materials are vacuum melt to alloy ingot, then alloy ingots can be machined by hot rolling, cold rolling and all machining methods of drilling, turning, boring etc to shape the FeCrCo Magnets.
FeCrCo Magnets have something similar with Alnico Magnet on production and characteristic. FeCrCo Magnets also have high remanence but low Hc which is similar with Alnico 5 Magnets, They also have high working temperature and very low-temperature coefficient of Br which is also similar with Alnico Magnets. They are also made magnetism by a process of heat treatment, and they also classified to the isotropic and anisotropic material by the process of magnetic orientation.
The very difference of FeCrCo Magnets is they are very machinable. As all know, whether Alnico Magnets or Rare earth magnetic materials, they are all brittle, they are only able to be machined by limited methods, For example, grinding and linear cutting. But FeCrCo Magnets can be machined by lots of methods prior to the heat treatment.
Characteristic of FeCrCo Magnets
Machinable prior to the heat treatment
High working temperature.
Low-temperature coefficient; Very Temperature stable.
Various shapes. they can be produced to very thin and very small part.
low Hc

Typical Magnetic Properties

TYPICAL MAGNETIC PROPETIES OF IRON-CHROMIUM-COBALT MAGNETS
(US STANDARD)
Grade
Residual induction(Br)
Coercive Force(Hcb)
(BH)max
Mark
Br:Residual induction /Hcb:Coersive Force /Hcj:intrinsic Coersive Force /(BH)max:Max Energy Product
kGs(mT)
kA/m(kOe)
kJ/M3(MGOe)
Fe Cr Co 1
8.8(880)
37(0.46)
12.7(1.60)
Isotropic
Fe Cr Co 2
9.9(990)
28(0.35)
12.7(1.60)
Isotropic
Fe Cr Co
10.5(1050)
16(200)
8.0(1.00)
Isotropic
Fe Cr Co 1
9.0(900)
39(490)
13.0(1.63)
Isotropic
Fe Cr Co 5
13.5(1350)
48(600)
41.8(5.25)
anisotropic
Fe Cr Co 250
14.0(1400)
20(250)
15.9(2.00)
anisotropic
Fe Cr Co 640
12.0(1200)
51(641)
35.0(4.4)
anisotropic
TYPICAL MAGNETIC PROPETIES OF IRON-CHROMIUM-COBALT MAGNETS
(CN STANDARD)
Grade
Residual induction(Br)
Coercive Force(Hcb)
Coercive Force(Hcj)
(BH)max
Mark
Br:Residual induction /Hcb:Coersive Force /Hcj:intrinsic Coersive Force /(BH)max:Max Energy Product
kGs(mT)
kA/m(kOe)
kA/m(kOe)
kJ/M3(MGOe)
FeCrCo10/3
820(8.2)
340(27)
360(29)
10(1.25)
Isotropic
FeCrCo12/4
800(8.0)
500(40)
530(42)
12(1.5)
Isotropic
FeCrCo28/5
1000(10)
570(45)
580(46)
28(3.5)
anisotropic
FeCrCo30/4
1150(11.5)
500(40)
510(41)
30(3.8)
anisotropic
FeCrCo35/5
1050(10.5)
630(50)
640(51)
35(4.4)
anisotropic
FeCrCo36/5
1200(12.0)
660(52)
680(54)
36(4.5)
anisotropic
FeCrCo44/4
1300(13.0)
560(44)
570(45)
44(5.5)
anisotropic
FeCrCo52/5
1350(13.5)
600(48)
620(49)
52(6.5)
anisotropic