摘要:
A steel sheet containing C: 0.0005% or more and 0.0035% or less, Si: 0.05% or less, Mn: 0.1% or more and 0.6% or less, P: 0.02% or less, S: less than 0.02%, Al: 0.01% or more and less than 0.10%, N: 0.0030% or less, B: 0.0010% or more, in which the relationship B/N≤3.0 is satisfied and the balance being Fe and inevitable impurities, and a microstructure in which the average integrated intensity f in the (111)[1-10] to (111)[-1-12] orientations on a plane parallel to a sheet surface at a position located at ¼ of the thickness of the steel sheet is 7.0 or more, in which an average ferrite grain size is 6.0 μm or more and 10.0 μm or less, and the relationships EAVE≥215 GPa, E0≥210 GPa, E45≥210 GPa, E90≥210 GPa, and −0.4≤Δr≤0.4 are satisfied.
摘要:
A steel sheet containing C: 0.0005% or more and 0.0035% or less, Si: 0.05% or less, Mn: 0.1% or more and 0.6% or less, P: 0.02% or less, S: less than 0.02%, Al: 0.01% or more and less than 0.10%, N: 0.0030% or less, B: 0.0010% or more, in which the relationship B/N≦3.0 is satisfied and the balance being Fe and inevitable impurities, and a microstructure in which the average integrated intensity f in the (111)[1-10] to (111)[-1-12] orientations on a plane parallel to a sheet surface at a position located at ¼ of the thickness of the steel sheet is 7.0 or more, in which an average ferrite grain size is 6.0 μm or more and 10.0 μm or less, and the relationships EAVE≧215 GPa, E0≧210 GPa, E45≧210 GPa, E90≧210 GPa, and −0.4≦Δr≦0.4 are satisfied.
摘要:
A steel sheet containing C: 0.02% or more and 0.10% or less, Si: 0.01% or more and 0.5% or less, P: 0.001% or more and 0.100% or less, S: 0.001% or more and 0.020% or less, N: 0.007% or more and 0.025% or less, Al: 0.01% or more and {−4.2×N (%)+0.11}% or less, Mnf: 0.10% or more and less than 0.30% where Mnf is defined by equation Mnf=Mn−1.71×S, and the balance being Fe and inevitable impurities, in which the steel sheet has a thickness of 0.35 (mm) or less, the product of the lower yield point (N/mm2) of the steel sheet and the thickness (mm) is 160 (N/mm) or less, and the product of the upper yield point (N/mm2) of the steel sheet is 52.0 (N) or more.
摘要:
A steel sheet containing C: 0.02% or more and 0.10% or less, Si: 0.01% or more and 0.5% or less, P: 0.001% or more and 0.100% or less, S: 0.001% or more and 0.020% or less, N: 0.007% or more and 0.025% or less, Al: 0.01% or more and {−4.2×N (%)+0.11} % or less, Mnf: 0.10% or more and less than 0.30% where Mnf is defined by equation Mnf=Mn−1.71×S, and the balance being Fe and inevitable impurities, in which the steel sheet has a thickness of 0.35 (mm) or less, the product of the lower yield point (N/mm2) of the steel sheet and the thickness (mm) is 160 (N/mm) or less, and the product of the upper yield point (N/mm2) of the steel sheet is 52.0 (N) or more.
摘要:
An object of the present invention is to provide a method for designing a metal material having mechanical properties with which a specified spring back angle can be achieved after any one of metal materials having a wide variety of mechanical properties and thicknesses has been formed by performing cylinder forming and a product formed by using the method. A method for designing a material to be subjected to cylinder forming, the method including, in the design of a metal material to be subjected to cylinder forming in which the metal material is formed by performing bending forming, calculating the yield strength YP, the Young's modulus E and the thickness t of the metal material so that a spring back angle Δθ becomes a specified value when cylinder forming is performed under conditions of a radius of curvature of bending r of 5 mm or more and a bending angle θ of 90 degrees or more and 180 degrees or less and designing the metal material so that the metal material has the calculated yield strength YP and Young's modulus E.
摘要:
A resin coated metal sheet includes a metal sheet, a first resin coating layer formed on one main surface of the metal sheet and formed of a resin material whose difference between a heat quantity of crystallization and a heat quantity of fusion after being laminated to the metal sheet is 6 J/g to 20 J/g on a unit weight basis, and a second resin coating layer formed on another main surface of the metal sheet.
摘要:
A resin coated metal sheet includes a metal sheet, a first resin coating layer formed on one main surface of the metal sheet and formed of a resin material whose difference between a heat quantity of crystallization and a heat quantity of fusion after being laminated to the metal sheet is 0 J/g to 20 J/g on a unit weight basis, and a second resin coating layer formed on another main surface of the metal sheet.