Method for preparing titanium-bearing low-cost structural steel

A method for preparing a steel piece, comprising the steps of:

• furnishing a fully killed molten steel alloy consisting essentially of, in weight percent, from about 0.15 to about 0.27 percent carbon, from about 0.5 to about 1.50 percent manganese, less than about 0.04 percent phosphorus, less than about 0.05 percent sulfur, from about 0.1 to about 0.4 percent silicon, from about 0.005 to about 0.020 percent titanium, from about 0.004 to about 0.015 percent nitrogen, from about 0.02 to about 0.04 percent vanadium, and the remainder iron plus incidental impurities;
• continuously casting the alloy to form a continuously cast mass;
• and
• hot rolling the continuously cast mass.

A method for preparing a steel piece, comprising the steps of:

• furnishing a fully killed molten steel alloy consisting essentially of, in weight percent, from about 0.15 to about 0.27 percent carbon, from about 0.5 to about 1.50 percent manganese, less than about 0.04 percent phosphorus, less than about 0.05 percent sulfur, from about 0.1 to about 0.4 percent silicon, from about 0.005 to about 0.020 percent titanium, from about 0.004 to about 0.015 percent nitrogen, and the remainder iron plus incidental impurities;
• continuously casting the molten steel alloy to produce a solid cast mass;
• reheating the solid cast mass to a hot rolling temperature;
• and
• hot rolling the solid cast mass.