Physical Properties of Cast Alnico

Curie Temperature ()

760-890

Max. Operating Temperature ()

450-550

Resistivity (μohm.cm)

47-54

Hardness (Hv)

520-630

Density (g/cm³)

6.90-7.30

Relative Recoil Permeability (μrec)

1.70-4.70

Saturation Field Strength (kOe,kA/m)

2.7-6.3/215-500

Temperature Coefficient of Br (%/)

-0.025 ~ -0.02

Temperature Coefficient of iHc (%/)

+0.01 ~ +0.03

Grade

Br
KGs (Mt)

Hcj
Oe (KA/m)

Bhmax
MGOe(KJ/m3)

D
g/cm3

MMPA
Class

α %/°C
Br (Hcj)

TC.
°C

TW.
°C

*LN9

6.8(680)

380 (30)

1.13 (9.0)

6.9

Alnico3

-0.02(+0.03)

810

450

*LN10

6.0(600)

500 (40)

1.20 (10.0)

6.9

Alnico3

-0.02(+0.03)

810

450

* = Isotropic, Others = Anisotropic