A study of hot rolled steel plate for porcelain enamelling

The objective of this study is to develop a new hot rolled heavy plate steel suitable for porcelain enamelling, especially for vitreous enamelled vessels. The properties generally required for steel include good weldability, high strength indicated by a yield strength that is greater than 245 MPa after enamelling, high resistance to fishscaling, and an interface between the enamel and steel that is acceptable. The work done by other researchers on hot or cold rolled sheet steels over the last few decades has been reviewed. The hydrogen diffusion coefficients for evaluating the resistance of the enamelling steels to fishscaling, and the effect that the trapping sites have on the coefficient were elucidated, and the testing method for evaluating adherence at the enamel/steel interface has also been introduced.