Patent ID: 11155902

Abstract:
A galvanized dual phase steel sheet with a martensite phase and a ferrite phase and a composition containing within the following ranges by weight: carbon from about 0.01% to about 0.18%; manganese from about 0.2% to about 3%; silicon≤about 1.2%; aluminum from about 0.01% to about 0.1%; one or both of chromium and nickel from about 0.1% to about 3.5%; calcium from about 0.0003% to about 0.01%; phosphorus≤about 0.1%; sulfur≤about 0.03%; nitrogen≤about 0.02%; molybdenum≤about 1%; one or more of niobium and titanium≤about 1%; and boron≤about 0.006% by weight; and with the balance of the composition being iron and incidental ingredients. The steel sheet may be both galvanized and galvannealed.