02 · Product
The highest-permeability grades, ready for the next 40 years of load.
Every power transformer is built around grain-oriented electrical steel. We make the premium end: high-permeability Hi-B grades, laser-scribed and certified coil by coil in our own lab.
We supply the people building America's transformer fleet: transformer manufacturers, core builders, and the lamination processors that serve them. Agreements are in place to supply U.S. HiPerm coils to the country's leading transformer and core manufacturers.
Texture
Goss {110}⟨001⟩ · cube-on-edge−
More than 95% of grains are grown so the crystal's easiest direction of magnetization lies along the rolling direction. The steel magnetizes with almost no resistance — that alignment is what "grain-oriented" means.
Grades
Hi-B (HGO) · domain-refined+
Gauge
0.18 – 0.27 mm · 0.15 in development+
Width
Master coils to 1,230 mm+
Saturation
Bsat ≥ 1.88 T+
Refinement
Transverse laser scribe · 100% of output+
Coating
High-tension, electrical-resistive coat+
Certification
Per-coil P1.7/50 · B800+
Table 01 — product envelope · tap a row for the why · final grade sheet at first coils