Item

Unit

Value

  Tc Curie
temperature

0 C

450 ~ 460

T Mam.operating tenp 

0 C

250

Temp.coefficient

α Br

% 0 C

-0.2

α Hcj

% 0 C

0.3

  μ rec Relative 
recoil permeability

10.5 ~ 1.3

  D  Density

g/cm 3

4.7 ~ 5.1

  H Hardness

HV

480 ~ 580

  ρ Resistivity

Ω.cm

≥ 10 6