What is peritectic steel?

Answer 1

peritectic steels are ultra low carbon steels that fall into the phase change boundary, namely upper phase, that is it is directly influenced by alloying elements which can make this high tensile, high shrink steel difficult to cast for the automotive industry, great care has to be taken in mould powder choices, and also the cooling rate in terms of litres/Kilogramme.

Using the Carbon equivalent to identify the peritectic chemistry is a bit hit and miss, hence the practicalities of making this product need much more study. It is problematic globally, indeed some producers cannot continuously cast this grade. Mould powder, secondary cooling and continuous unbending in the machine, all have to be optimised...expect disappointments!