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The most important property of the electrical steels used for this application is the loss.
Non-oriented fully processed electrical steels (as M230-35A) have guaranteed magnetic properties, in accordance with (or exceeding the levels required by) EN 10106. As well as the maximum loss and minimum polarisation levels cited, full magnetic characterisation curves regarding losses, polarisation, permeability and apparent power at different frequencies are available on request.
Grain-oriented electrical steels are supplied in the fully processed state and have guaranteed magnetic properties, in accordance with EN 10107. Conventionals (as M120-27S), or even improved conventional grades (as M114-27S AM FCE) can be used.