Rolled low carbon niobium steel

摘要

This is a process and product in which excellent properties are achieved with a relatively low alloy steel and normal rolling with a steel having the following composition in addition to iron and impurities, in percentages by weight: }Carbon .05 to .12 }Manganese .25 to .90 }Silicon .15 to .50 }Nickel .15 to .50 }Copper .15 to .50 }Aluminum .02 to .110 }Niobium (Columbium) .07 to .140 }Nitrogen .007 to .015 }Phosphorus .010 maximum }Sulfur .025 maximum. }