Magnetic Properties

Nom.

Min.

Br (Gauss)

12,800

12,500

Hc (Oersted)

12,400

11,400

Hk (Oersted)

14,000

12,000

Hci (Oersted)

17,000

15,000

BHmax (MGOe)

40.0

38.0

Temp Coeff of Br (%/°C)

-0.11

N/A

Recoil Permeability (µrec)

1.05

N/A

Tc, Curie Temperature (°C)

310

N/A

Maximum Operating Temperature (°C)

120

N/A

Physical Properties

Density (Ibs/in³)

0.27

Coeff of Linear Expan. ^ to <M> (10^-7/°C approx)

-5

Coeff of Linear Expan. // to <M> (10^-7/°C approx)

65

Compressive Strength (psi x 10³)

160

Young's Modulus (psi x 10⁶)

23

Vicker's Hardness (HV)

600

Common Industry Name

N40

Electrical Resistivity (µW.cm)

144

Typical Appearance

Gray