Type

Size

Morphology

Precipitate

I

1 - 1.5 µm in length

Intergranular rod-like

(Fe, Mn)₃C

II

120 - 400 nm

Cuboid, round, oblong, ellipsoidal

(Ti, Nb)N

III

10 - 120 nm

Spherical, plate

(Nb, Ti)C

IV

3 - 5 nm

Needle-like

(Ni, Ti)C