Standards for electrical steel sheets
Most of the time the electrical steel sheets are appointed as this way : M800-50A (E.U standard, BS EN 10106)
- M : Magnetic
 - 800 : 8.00 W / kg (iron losses per kilogram) for B = 1.5T at the frequency of 50Hz
 - 50 : 0.50 mm (thickness of the iron sheet)
 - A : fully processed
 
| Thickness (mm) | Iron losses (W/kg) | Taiwan | Japan | IEC | U.E | China | America | 
|---|---|---|---|---|---|---|---|
| 0.50 mm | 8.0 W/kg | 50CS800 | 50A800 | M800-50A5 | M800-50A | 50W800 | 47F450(7.84) |