Production of High Strength Steels by Continuous Annealing

Inland's No. 3 Continuous Annealing Line will start up in the fall of 1983 and produce high strength steels with tensile strength from 50 ksi to 220 ksi. This paper presents an overview only of the scope and philosophy behind these three classes of products, namely HI-FORM, formable high strength steels with tensile strengths up to 100 ksi; DI-FORM, extra formable high strength steels with tensile strengths up to 140 ksi and MartINsite, ultra high strength steels with tensile strengths from 160 to 220 ksi. A one side zinc rich paint coated HI-FORM and DI-FORM product is also described.