Product · HSN 7211

CRGO

Grain-oriented electrical steel engineered to minimise core loss along the rolling direction — the standard choice for transformer cores.

Specifications

Thickness	0.23 / 0.27 / 0.30 mm
Width	As slit for core design
Type	Grain oriented electrical steel
Grade	M3, M4, M5, M6, Hi-B (IS 3024 / IEC 60404-8-7)
Core Loss	0.85 – 1.30 W/kg at 1.7 T
Insulation	C-5 / inorganic coating
Product Form	Coil or slit strip

Direction	Magnetic properties along rolling direction
Steel Standard	IS 3024, IEC 60404-8-7 or equivalent
Availability	On enquiry
Recyclable	Yes
Standard	Grain-oriented electrical steel
HSN code	7211

Distribution transformers

CRGO supplied in the grade, size and finish distribution transformers require.

Power transformers

CRGO supplied in the grade, size and finish power transformers require.

Grid equipment

CRGO supplied in the grade, size and finish grid equipment require.

Coil

Full-width coils as rolled at the mill.

Sheets

Cut-to-length sheets in any size you need.

Strips

Slit strips and narrow coils to exact width.

Coils slit into strips for tubes, parts and packaging.

Cut-to-length sheets with tight tolerance.

How it is made

Silicon steel processed so the grain structure aligns with the rolling direction, minimising core loss.

1
Silicon alloying
A higher silicon content raises electrical resistivity and cuts eddy-current loss.
2
Cold reduction & decarburisation
Multiple reductions with intermediate annealing prepare the grain structure.
3
High-temperature annealing
Secondary recrystallisation grows grains aligned to the rolling direction — the source of the low core loss.
4
Insulation coating & slitting
An insulating coat is applied; strip is then slit to transformer lamination widths.