Abstract: An embodiment of the present invention provides a high strength thin steel material for API having excellent resistance to deformation and a method of manufacturing same, the steel material comprising, in weight %, C: 0.05-0.15%, Si: 0.05% or less (0% excluded), Mn: 0.5-2.5%, Nb: 0.05% or less (0% excluded), V: 0.004% or less (0% excluded), Mo: 0.03-0.2%, Cr: 0.1-0.3%, P: 0.03% or less (0% excluded), S: 0.015% (0% excluded), Al: 0.05% or less (0% excluded), N: 0.01% or less (0% excluded), and the balance being Fe and other inevitable impurities, wherein the microstructure of the steel material comprises, in area %, ferrite: 10-30% and the balance being bainite, the ferrite having an average crystal grain size of 15-30 ?m and including at least 3,000/?m2 V-based precipitates.

Abstract: Disclosed are a hot dip coated steel and a method for manufacturing the same, the hot dip coated steel comprising a hot rolled steel and a hot dip coated layer formed on the surface of the hot rolled steel, wherein the hot rolled steel comprises: by wt %, 0.05-0.15% of C, 0.5% or less of Si (excluding 0%), 0.5-1.5% of Mn, 0.01-0.05% of Nb, 0.005-0.05% of V, 0.03% or less of P (excluding 0%), 0.015% of S or less (excluding 0%), 0.05% or less of Al (excluding 0%), 0.01% or less of N (excluding 0%), and the balance of Fe and inevitable impurities; 90 area % or more of ferrite as the microstructure thereof; and 5,000-15,000/?m2 of V-based precipitates.

Abstract: Disclosed are a hot dip coated steel and a method for manufacturing the same, the hot dip coated steel comprising a hot rolled steel and a hot dip coated layer formed on the surface of the hot rolled steel, wherein the hot rolled steel comprises: by wt %, 0.05-0.15% of C, 0.5% or less of Si (excluding 0%), 0.5-1.5% of Mn, 0.01-0.05% of Nb, 0.005-0.05% of V, 0.03% or less of P (excluding 0%), 0.015% of S or less (excluding 0%), 0.05% or less of Al (excluding 0%), 0.01% or less of N (excluding 0%), and the balance of Fe and inevitable impurities; 90 area % or more of ferrite as the microstructure thereof; and 5,000-15,000/?m2 of V-based precipitates.

Abstract: An aspect of the present invention provides an Fe—Ni alloy metal foil having excellent heat resilience, where the Fe—Ni alloy metal foil is prepared by an electroforming (EF) method and has a thickness of 100 ?m or less (except O ?m), wherein the Fe—Ni alloy metal foil comprises, by wt %, Ni: 34-46 %, a remainder of Fe and inevitable impurities, and wherein the Fe—Ni metal foil has a degree of heat resilience in an amount of 30 ppm or less.

Abstract: An aspect of the present invention provides an Fe—Ni alloy metal foil having excellent heat resilience, where the Fe—Ni alloy metal foil is prepared by an electroforming (EF) method and has a thickness of 100 ?m or less (except O ?m), wherein the Fe—Ni alloy metal foil comprises, by wt %, Ni: 34-46 %, a remainder of Fe and inevitable impurities, and wherein the Fe—Ni metal foil has a degree of heat resilience in an amount of 30 ppm or less.

Abstract: The present invention relates to an apparatus and a method for manufacturing metal foil by electroforming.