Boron-Treated High Strength Structural Steels and Their Application to Automotive Components

Systematic experimental work has been conducted on the factors affecting toughness of boron-treated high strength structural steels for a wide range of tensile strength. It is clarified that, by a sophisticated control of such factors as chemical composition, tempering temperature, degree of hardening, and ther-raomechanical treatment, etc., more effective utilization of boron grades is sure to expand. Several proven and potential applications of boron steels to automotive components are briefly described.