23Q090
23Q090 Grain-Oriented Electrical Steel
The thinnest grade in the range, for large power transformer cores where eddy current loss dominates the loss budget.
View details20R070 Grain-Oriented Electrical Steel
20R070 is supplied at 0.20 mm for cores where no-load loss targets are tight and core size has to be kept small. The thin gauge limits eddy current loss, and high permeability reduces excitation current so that fewer turns or a smaller core section can carry the same duty.
Because thin material is more sensitive to handling, coils are packed for transport and supplied slit to the core width required by the winding line, with mill test certificates covering core loss, induction and coating class.
Technical specification
| Grade | 20R070 |
|---|---|
| Thickness | 0.20 mm |
| Width range | From 40 mm core width (slit to width) |
| Density | 7.65 g/cm³ |
| Core loss P1.7/50 | ≤ 0.70 W/kg |
| Magnetic induction B800 | ≥ 1.90 T |
| Surface insulation | C2 / C4 coating options |
| Reference standard | GB/T 2521, EN 10107 |
Typical applications
- High-grade distribution transformers
- Wound core transformers
- Reactor cores
- Instrument transformers
Related grades
27Q100
27Q100 Grain-Oriented Electrical Steel
A thin-gauge grade for transformer cores that need lower loss than 0.
View details
30Q120
30Q120 Grain-Oriented Electrical Steel
A conventional grain-oriented grade for distribution transformers where the loss budget allows a standard grade.
View details