Abstract: A cold rolled steel sheet suitable for enamel coating is provided which consists essentially of, on a weight basis,C: up to 0.005%,P: up to 0.02%,S: up to 0.03%,N: 0.005% to 0.012%,Ti: up to 0.15% andTi.gtoreq.(48/12C+48/14N+48/32S)%,Cu: up to 0.08%, andat least one member selected from As, Sb, and Bi in a total amount of 0.003% to 0.03% or Se and/or Te in a total amount of 0.003% to 0.05% or their combination in a total amount of 0.002 to 0.05%, the balance being Fe and concomitant impurities. The steel is produced by continuously casting a molten steel having the same composition as above, hot rolling and then cold rolling the steel, and continuously annealing the steel at a temperature in the range from the recrystallization temperature to the Ac.sub.3 point. It is also produced by substantially the same procedure but by box annealing the steel having a titanium content increased at a temperature in the range from the recrystallization temperature to 800.degree. C.

Abstract: A method of manufacturing cold rolled steel sheets for extra deep drawing is disclosed, which comprises the steps of:melting and continuously casting a steel material containing not more than 0.0060% of C, 0.01 to less than 0.10% of Mn, 0.005-0.10% of Al, Ti corresponding to Ti(%) of the following equation (1) when an effective Ti amount expressed by Ti* in the formula (1) satisfies the following inequality (2), and optionally, 0.005.about.0.2% in total of at least one of Cu, Ni and Cr to obtain a cast slab;hot rolling the cast slab immediately or after the slab is heated at a temperature of 900.degree.-1,150.degree. C. during which a hot finishing temperature is made to not more than 780.degree. C.;cold rolling the hot rolled sheet in the usual manner; andrecrystallization annealing the cold rolled sheet at a temperature of not less than the recrystallization temperature but not more than 1,000.degree. C.Ti*(%)=Ti(%)-(48/14)N(%)-(48/32)S(%) (1)4.0.times.C(%).ltoreq.Ti*(%).ltoreq.0.