Cast AlNiCo Magnets

The majority of AlNiCo magnets are cast type. Cast AlNiCo magnets are manufactured by conventional foundry processes. AlNiCo alloys with different composition are melted and poured into the resin bonded sand molds, then solidified material with a rough surface will undergo heat treatment and cooling process. Cast AlNiCo magnets can be divided to the isotropic form and anisotropic form base on whether apply the magnetic field to orient magnets during the cooling process. For cast AlNiCo magnet, its anisotropy is a kind of shape anisotropy which associated with elongated Fe-Co particles in a Ni-Al matrix aligned parallel to the magnetic field during spinodal decomposition of the alloy. Therefore, material will be machined to specific geometry and tolerance after heat treatment process.

Cast AlNiCo Magnets-Main

Manufacturing Process of Cast AlNiCo Magnets

Cast AlNiCo Magnets-Process

Magnetic Properties of Cast AlNiCo Magnets

Grade

Remanence

Br

Coercivity

Hcb

Max. Energy Product

(BH)max

Temp. Coefficient

Tk

Curie Temp.Max. Operating TemperatureMMPA Equivalent
mTGskA/mOekJ/m3MGOe

%/℃

(Br)

%/℃

(Hcj)

LN10600600040500101.2-0.02-0.03810450AlNiCo3
LNG12700700044550121.5-0.02-0.03810450AlNiCo2
LNG13680680048600131.63-0.02-0.03810450
LNG18900900048600182.25-0.02-0.03850450AlNiCo4
LNG3712001200048600374.63-0.02-0.03860525AlNiCo5
LNG4012501250048600405-0.02-0.03860525
LNG4412501250052650445.5-0.02-0.03860525
LNG5213001300056700526.5-0.02-0.03860525AlNiCo5DG
LNG6013301330060750607.5-0.02-0.03860525AlNiCo5-7
LNGT185805800901130182.25-0.02-0.03860550AlNiCo7
LNGT2810001000058720283.5-0.02-0.03860525AlNiCo6
LNGT3280080001001250324-0.02-0.03860550AlNiCo8
LNGT3880080001101380384.75-0.02-0.03860550
LNGT4485085001201500445.5-0.02-0.03860550
LNGT4890090001201500486-0.02-0.03860550
LNGT6095095001101380607.5-0.02-0.03860550
LNGT721050105001121500729-0.02-0.03860550AlNiCo9
LNGT8811001100011514508811-0.02-0.03860550
LNGT36J7007001401750364.5-0.02-0.03860550AlNiCo8HC
  • The above-mentioned data of magnetic properties and physical properties are given at room temperature.
  • The max working temperature of magnet is changeable due to length-diameter ratio, coating thickness and other environment factors.