Silicon Iron Alloys

Silicon Iron alloys are generally used in applications requiring higher electrical resistivity, higher permeability, lower coercive force and residual magnetism than provided by either carbon steels or soft magnetic stainless steels such as Magival series.

Valbruna grades of Silicon Iron alloys are classified according to the silicon content present in the chemical analysis according to the standard classifications of ASTM A867. Each single Grade has got its enhanced machiniability option where requested.

Silicon Iron alloys are normally supplied in the annealed condition since the best magnetic properties can be reached through a soft magnetic annealing carried out after part machining.

Silicon Iron alloys are very prone to get rusty under ordinary atmospheric conditions and therefore a protective coating should be applied to the heat treated parts if exposed during their life cycle.

Due to theur high magnetic porperties Silicon Iron alloys are mainly used in the manufacture of relays, solenoids and injector parts.

VALBRUNA GRADE ASTM
FeSi1P ASTM A 867 - TYPE 1F
FeSi3 ASTM A 867 - TYPE 2
FeSi3P ASTM A 867 - TYPE 2F
FeSi4 ASTM A 867 - TYPE 3