FLF-60B is a type of Ferrocore silicon steel core material made by Ansteel Group. It is used in high efficiency power transformers and is made from a mixture of silicon, carbon and iron. The product has good electrical and magnetic properties, allowing it to transfer power efficiently. It is also resistant to thermal stress, making it ideal for use in high temperature applications. Additionally, it offers a low coefficient of expansion, making it suitable for applications that require stability.