How to read electrical steel grade names
A grade name already tells you thickness, steel type and guaranteed core loss. Here is how to decode Lysteel, GB/T, Baosteel, EN and JIS names.
Most electrical steel names follow the same logic: thickness in hundredths of a millimetre, a letter for the steel family, and the maximum core loss multiplied by 100. Once you know the pattern you can compare offers from different mills quickly.
Grain-oriented example: LG23QH080
- LG — Lysteel (LY Steel)
- 23 — nominal thickness 0.23 mm
- Q — grain-oriented
- H — domain refined (G = high permeability)
- 080 — max core loss P1.7/50 = 0.80 W/kg
Non-oriented example: L35W270
L = Lysteel, 35 = 0.35 mm, W = non-oriented (fully processed), 270 = max P1.5/50 of 2.70 W/kg. For electric-vehicle grades a V is added and the loss is measured at 400 Hz: L27WV1400 means 0.27 mm with P1.0/400 ≤ 14.00 W/kg.
The same material in other systems
| Lysteel | GB/T | Baosteel | EN | JIS |
|---|---|---|---|---|
| LG23QH080 | 23QH080 | B23R080 | — | — |
| LG27QG095 | 27QG095 | B27P095 | — | — |
| L35W270 | 35W270 | B35A270 | M270-35A | 35A270 |
| L50W470 | 50W470 | B50A470 | M470-50A | 50A470 |
Equivalents are matched by thickness and guaranteed loss class. Magnetic induction, coating and mechanical properties can still differ, so confirm against the mill datasheet before substituting one grade for another.
