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US 2013/0076017 A1Published application
Hot-rolled high-strength steel structural members and method
AssigneeConsolidated Metal Products, Inc.
InventorHugh M. Gallagher, JR.
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Abstract
Hot-rolled high-strength steel elongated structural members and method of making same are disclosed by hot-rolling high-strength steel having a specific chemical composition to provide the members of desired geometrical configuration including a thin web with opposed thicker flanges extending therefrom to increase the load bearing capacity of the members.
Claims27
A high-strength steel structural member comprising
- a hot-rolled high-strength steel elongated structural member having a uniform cross-sectional configuration over at least a portion of its length, the cross-sectional configuration including a web portion with upper and lower flange portions extending from opposite ends of said web portion, said web portion having an average thickness up to about 85% of the average thickness of the combined thicknesses of said upper and lower flange portions,
- said upper and lower flange portions providing increased load bearing capacity to said structural member,
- wherein the high-strength steel has a tensile strength of at least about 120,000 psi and a yield strength of at least about 90,000 psi comprising, by weight percent,
- carbon, about 0.30 to about 0.65%
- manganese, about 0.30 to about 2.5%
- at least one of the group consisting of aluminum, niobium, titanium, and vanadium, and mixtures thereof, about 0.03 to about 0.35%, and
- iron, balance.
4 more elements
A method of making a high-strength steel elongated structural member comprising
- providing high-strength steel having a tensile strength of at least about 120,000 psi and a yield strength of at least about 90,000 psi, wherein the high-strength steel comprises, by weight percent:
- carbon, about 0.30 to about 0.65%
- manganese, about 0.30 to about 2.5%
- at least one of the group consisting of aluminum, niobium, titanium, and vanadium, and mixtures thereof, about 0.03 to about 0.35%, and
- iron, balance
- hot-rolling the high-strength steel to provide a structural member having a uniform cross-sectional configuration over at least a portion of its length, said uniform cross-sectional configuration including a web portion with upper and lower opposed flange portions extending from opposite ends of the web portion, said web portion having an average thickness up to about 85% of the average thickness of the combined thicknesses of said upper and lower flange portions.
3 more elements
Dependencies are inferred from the claim text.