The body-centered cubic form of pure iron, stable below 910C (l670F).
The body centred cubic form of iron which, in pure iron, exists up to 910oC.
The body-centered cubic form of pure iron, stable below 910 ºC (l670 ºF).
The solid crystalline form of iron that is stable and exists below 1670 F. It is characterized by a body-centered cubic structure.
The polymorphic form of iron, stable below 1670°F. has a body centered cubic lattice, and is magnetic up to 1410° F.