Chemical composition of grain-oriented electrical steels: typically electrical steels contain around 3% of silicon (but it can vary between 0.2–3.4%), sometimes with addition of aluminium; the balance is iron. Special steel can contain up to 6.5% of Si.
The drawing is based on the data from: Anthony Moses, Philip Anderson, Keith Jenkins, Hugh Stanbury, Electrical Steels, Volume 1: Fundamentals and basic concepts, IET, 2019, ISBN 978-1-78561-970-0
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