Your partner for magnetic solution & high quality magnet

AlNiCo Magnet

Sintered & Cast AlNiCo

Though it names AlNiCo, it is not an alloy containing Aluminum (Al), Nickel (Ni), Cobalt (Co). It also contains Cobalt, Nickel, and Aluminum with the addition of Iron, Copper, and sometimes Titanium that help make them become stronger permanent magnets. Max Working Temperature of AlNiCo ranges from 450°C to 550°C.There are two kinds of AlNiCo, Sintered AlNiCo and Cast AlNiCo. Cast magnets may be manufactured in complex shapes and the mould charge (sand mould) is cheap. But due to the sand mould edges, cast alnico has darkened edges with a slightly rough texture. To get smooth surface, grounding is needed. Sintered AlNiCo offer slightly lower magnetic properties but better mechanical characteristics. Most AlNiCo magnet grades are anisotropic (they can only be magnetized in a single axis /direction – they are the more powerful magnet grades of AlNiCo. The others are isotropic (they can be magnetized in any direction or directions) – they are weaker but offer more design and performance flexibility.

Processing Flow

*Customized designs are available.

*Max working temperature can be as high as 550°C.

*Disadvantage: Br and BH (max) are not as high as rare earth magnet.

*Advantage: High energies and relatively low coercivity; High magnetic flux density; low mould charge; stable temperature properties; easy to shape.

 

Application

Electronic ignition systems

Industrial motors

Watt hour meters

Hand tools

Medical instruments

Vending machines

Guitar pickups

Automatic control appliance

Magnetic and Physical Properties of Cast Alnico Magnet
GradesEquivalent MMPA
Class 
RemanenceCoercive ForceMaximum Energy ProductDensityReversible Temp. CoefficientReversible Temp. CoefficientCurie Temp.Temp. CoefficientRemark
Br Hcb(BH)maxg/cm3α(Br)α(Hcj)TCTW
mTGsKA/mOeKJ/m3MGOe%/℃%/℃
LN10ALNICO 3600600040500101.26.9-0.03-0.02810450Isotropy
LNG13ALNICO 270070004860012.81.67.2-0.03+0.02810450
LNGT18ALNICO 8 58058001001250182.27.3-0.025+0.02860550
LNG37ALNICO 512001200048600374.657.3-0.02+0.02850525Anisotropy
LNG40125012500486004057.3
LNG4412501250052650445.57.3
LNG52ALNICO 5DG13001300056700526.57.3
LNG60ALNICO5-713501350059740607.57.3
LNGT28ALNICO 610001000057.6720283.57.3-0.02+0.03850525
LNGT36JALNICO 8HC70070001401750364.57.3-0.025+0.02860550
LNGT38ALNICO 880080001101380384.757.3-0.025+0.02860550
LNGT40820820011013804057.3-0.025860550
LNGT60ALNICO 990090001101380607.57.3-0.025+0.02860550
LNGT7210501050011214007297.3 -0.025860550


Sintered AlNiCo Typical Magnetic Properties
GradeRemanenceCoercivity Intrinsic CoercivityMax. Energy Product  DensityWorkingRemark
Temp
BrHcbHcj(BH)maxTc
KGsTKOeKa/mKOeKa/mMGOeKj/m3g/cm3
FLN85.20.520.5400.54431.0-1.258-106.8760Isotropic
FLNG1270.70.5400.54431.5-1.7512-147810
FLNGT145.70.570.95760.98781.75-2.014-167.1850
FLNGT185.60.561.1881.13902.25-2.7518-227.2850
FLNG2810.51.050.58460.59473.5-4.1528-337.2850Anisotropic
FLNG34111.10.63500.64514.3-4.834-387.2890
FLNGT281010.7560.71573.5-3.828-307.2850
FKNGT317.80.781.31041.13903.9-4.531-367.2890
FLNG33J6.50.651.71351.881504.15-4.533-367.2850
FLNGT3880.81.551231.581264.75-5.338-427.2850
FLNGT428.80.881.51201.531225.3-6.042-487.25850
Contact