Stalloy

Stalloy is a silicon-iron alloy developed by William F. Barrett that is used in low-frequency technology. Due to its special electromagnetic properties, it was used in Marconi tape recorders in the 1930s and in transformers.

Web links

• Early Marconi tape recorders, used by the BBC ( Memento from July 16, 2011 in the Internet Archive )
• F. Stroud's research report on Stalloy transformers to the Physical Society, London, 1911