This ferritic stainless steel sheet contains, by mass %: C: 0.001% to 0.020%; Si: 0.01% to 4.00%; Mn: 0.01% to 3.00%; P: 0.010% to 0.040%; S: 0.0001% to 0.0100%; Cr: 10.0% to 15.0%; N: 0.001% to 0.020%; Al: 0.50% to 10.0%; and either one or both of Ti: 0.05% to 0.40% and Nb: 0.05% to 0.40%, with the balance being Fe and unavoidable impurities, in which Cr/(Si+Al) is 10.0 or less, and a specific gravity is 7.6 g/cm.sup.3 or less.

A non-oriented electrical steel sheet has excellent magnetic properties and a chemical composition including C: not more than 0.01 mass %, Si: not more than 6 mass %, Mn: 0.05-3 mass %, P: not more than 0.2 mass %, Al: not more than 2 mass % but preferably not more than 0.005 mass %, N: not more than 0.005 mass %, S: not more than 0.01 mass %, Ga: not more than 0.0005 mass % even if hot band annealing is omitted.

An RFI/EMI shielding material composed of a conductive multi-fiber having a plurality of metalized monofilaments, each monofilament having a core of stainless steel or low carbon steel with an initial diameter and at least two layers of metal or metal alloy electroplated on the core which is drawn after electroplating to a final diameter less than the initial diameter, in the range of about 45-80 μm.

A production method of a maraging steel includes: the step of producing, by vacuum melting, a remelt electrode which comprises from 0.2 to 3.0% by mass of Ti and from 0.0025 to 0.0050% by mass of N; and the step of remelting the remelt electrode to produce a steel ingot having an average diameter of 650 mm or more; wherein the resulting maraging steel includes from 0.2 to 3.0% by mass of Ti.

A ferritic stainless steel with improved mechanical properties of weld zone is disclosed. The ferritic stainless steel includes, in percent (%) by weight of the entire composition, C: 0.005 to 0.02%, N: 0.005 to 0.02%, Cr: 11.0 to 13.0%, Ti: 0.16 to 0.3%, Nb: 0.1 to 0.3%, Al: 0.005 to 0.05%, the remainder of iron (Fe) and other inevitable impurities, and the ferritic stainless steel has a texture maximum strength of 30 or less in the {001} direction after welding.

A non-oriented electrical steel sheet according to an embodiment of the present invention includes: in wt %, C at 0.004 wt % or less (excluding 0 wt %), Si at 2.5 to 4.0 wt %, P at 0.1 wt % or less (excluding 0 wt %), Al at 0.3 to 2.0 wt %, N at 0.003 wt % or less (excluding 0 wt %), S at 0.003 wt % or less (excluding 0 wt %), Mn at 0.15 to 2.5 wt %, Cr at 0.5 wt % (excluding 0 wt %), and the balance including Fe and other impurities unavoidably added thereto; satisfies the following Equation 1; and has an average grain size of 20 μm or less.

[Mn]≥1450×[S]−0.8  [Equation 1]

(In Equation 1, [Mn] and [S] represent a content (wt %) of Mn and S, respectively.)

A Cr-based stainless steel sheet includes: 0.020 mass % or less of C; 1.00 mass % or less of Si; 1.00 mass % or less of Mn; 0.040 mass % or less of P; 0.0030 mass % or less of S; 10.0 to 18.0 mass % of Cr; 0.020 mass % or less of N; 0.10 mass % or less of Al; and one or both of 0.5 mass % or less of Nb and 0.5 mass % or less of Ti; in which a texture in a sheet surface satisfies (i) and (ii) below. (i) In the sheet surface, an area ratio of crystal grains ({211}±10-degree-oriented grains) whose orientation difference between a normal direction of the surface and a {211}-plane orientation is 10 degrees or less is less than 30%. (ii) For the {211}±10-degree-oriented grains, a length in a rolling direction and a length in a sheet width direction are each less than 0.15 mm on average.

A non-oriented electrical steel sheet having a high magnetic flux density and a low iron loss includes C: not more than 0.01 mass %, Si: 1.3-5.0 mass %, Mn: 0.001-3 mass %, sol. Al: not more than 0.004 mass %, P: 0.03-0.20 mass %, S: not more than 0.005 mass %, N: not more than 0.005 mass %, Ti: more than 0.0020 mass % but not more than 0.1 mass %, and further contains one or more selected from Sn: 0.001-0.1 mass %, Sb: 0.001-0.1 mass %, Ca: 0.001-0.02 mass % and Mg: 0.001-0.02 mass % as required.

A non-oriented electrical steel sheet containing: in mass %, C: 0.005% or less; Si: 0.1% to 2.0%; Mn: 0.05% to 0.6%; P: 0.100% or less; and Al: 0.5% or less, in which 10 pieces/μm.sup.3 or less in number density of non-magnetic precipitate AlN having an average diameter of 10 nm to 200 nm are contained, and an average magnetic flux density B50 in a rolling direction and in a direction perpendicular to rolling is 1.75 T or more. This non-oriented electrical steel sheet can be manufactured by two methods of a method of performing hot rolling annealing at a temperature of 750° C. to an Ac1 transformation point and a method of setting a coil winding temperature to 780° C. or higher and performing self annealing.

A flat steel product which, following a 5% biaxial deformation, exhibits, on one surface, a Wsa(1-5) value of <0.35 μm, a planar anisotropy Δr of −0.5 to +0.5 and, from the surface to a depth of <200 μm, and a nanohardness of >0.1 to <3.0 GPa. Also, a method of making the product where a slab including (in wt. %) 0.0003-0.050% C, 0.0001-0.20% Si, 0.01-1.5% Mn, 0.001-0.10% P, 0.0005-0.030% S, 0.001-0.12% AI, and 0.0001-0.01% N, the remainder Fe and impurities is heated to 1200-1270° C., rough-rolled with a reduction of 80-90%, and finish-hot-rolled at 850-950° C. with a reduction of 85-95%, for a total deformation of 95-99.5%. The reduction in the last hot roll pass is 1-25%, and the product is cooled at 4-30 K/s to a coiling temperature of 620-780° C. Following pickling, the product is cold-rolled with a total degree of deformation of 70-90% and recrystallization annealed at 650-900° C.