STEEL SHEET FOR PORCELAIN ENAMEL EXCELLENT IN FORMING PROPERTY, AGING PROPERTY AND ENAMELING CHARACTERISTICS AND METHOD FOR PRODUCING THE SAME.

摘要

A steel sheet for porcelain enamel excellent in forming property, aging property and enameling characteristics which comprises 0.0018 % or less of C, 0.020 % or less of Si, 0.10 to 0.30 % of Mn, 0.010 to 0.030 % of P, 0.030 % or less of S, 0.005 % of Al, 0.0008 to 0.0050 % of N, 0.0050 % or less and 0.6 N or more of B, and 0.010 to 0.05 % of O, wherein the contents of the above components are suitably adjusted, and wherein the type and the form of nitrides are controlled by adjusting conditions for hot rolling. The steel sheet for porcelain enamel not only is free from aging and excellent in the resistance to occurrence of foams or black points, but also can be produced without the use of an annealing process for removal of carbon and nitrogen which results in the increase of equipment cost, and without the addition of an expensive element such as Nb or Ti which results in the increase of material cost.