Disclosed is a hot-dip Al—Zn alloy coated steel sheet having excellent anti-corrosion property after coating, and a method for producing the same. In the disclosure, the hot-dip Al—Zn alloy coated steel sheet has a hot-dip coating layer containing by mass %, Al: 25% to 90%, and at least one of Sn: 0.01% to 2.0%, In: 0.01% to 10%, and Bi: 0.01% to 2.0%.

Disclosed is a hot-dip Al—Zn alloy coated steel sheet having excellent anti-corrosion property after coating, and a method for producing the same. In the disclosure, the hot-dip Al—Zn alloy coated steel sheet has a hot-dip coating layer containing by mass %, Al: 25% to 90%, and at least one of Sn: 0.01% to 2.0%, In: 0.01% to 10%, and Bi: 0.01% to 2.0%.

Provided is a galvanized steel sheet having excellent spot weldability; and a method for producing same. The galvanized steel sheet includes a base steel sheet and a zinc-based plating layer formed on the base steel sheet, wherein the surface layer of the base steel sheet may have a decarburization rate of at least 30% as represented by equation 1. [Equation 1]: Decarburization rate (%) of surface layer=(1−average carbon concentration in surface layer/bulk carbon concentration)*100, where the surface layer refers to a region extending to a depth of 35 μm from the surface of the base steel sheet.

Provided is an alloy-plated steel material that can be used in home appliances, automobiles, and construction materials and the like and, more particularly, to an alloy-plated steel material having excellent corrosion resistance and high surface quality.

Provided is an alloy-plated steel material that can be used in home appliances, automobiles, and construction materials and the like and, more particularly, to an alloy-plated steel material having excellent corrosion resistance and high surface quality.

The invention discloses a cosmetic zinc alloy massage head formula and a preparation technology thereof. The formula comprises the following raw materials: 4.19% of aluminum, 0.0027% of lead, 0.0005% of cadmium, 0.0011% of copper, 0.0073% of iron, 0.044% of magnesium, smaller than 0.0005% of tin, smaller than 0.001% of nitrogen, and zinc for the residual. A zinc alloy massage head has high impact strength and good tear resistance, and the technology can effectively improve conductivity stability and fullness, the surface strength and abrasive resistance of products; the conductivity of the alloy head is good after water electroplating; the conductivity of the alloy head is greatly improved, which is conducive to releasing charged ions on the surface of the human body, and especially in winter, the alloy head can release static electricity generated by dry air, and play a similar role as a ground wire in a current circuit.

The invention discloses a cosmetic zinc alloy massage head formula and a preparation technology thereof. The formula comprises the following raw materials: 4.19% of aluminum, 0.0027% of lead, 0.0005% of cadmium, 0.0011% of copper, 0.0073% of iron, 0.044% of magnesium, smaller than 0.0005% of tin, smaller than 0.001% of nitrogen, and zinc for the residual. A zinc alloy massage head has high impact strength and good tear resistance, and the technology can effectively improve conductivity stability and fullness, the surface strength and abrasive resistance of products; the conductivity of the alloy head is good after water electroplating; the conductivity of the alloy head is greatly improved, which is conducive to releasing charged ions on the surface of the human body, and especially in winter, the alloy head can release static electricity generated by dry air, and play a similar role as a ground wire in a current circuit.

A high-strength steel sheet having a tensile strength of 1,180 MPa or more, and specified chemical composition. The steel sheet includes a steel structure in which an area fraction of martensite having a carbon concentration of more than 0.7×[% C] and less than 1.5×[% C] is 55% or more, an area fraction of tempered martensite having a carbon concentration of 0.7×[% C] or less is 5% or more and 40% or less, a ratio of a carbon concentration in retained austenite to a volume fraction of retained austenite is 0.05 or more and 0.40 or less, and the martensite and the tempered martensite each have an average grain size of 5.3 μm or less, where [% C] represents the content, by mass %, of compositional element C in steel.

Provided is a zinc alloy-plated steel material used in automobiles, building materials, home appliances, or the like, and more specifically, to a zinc alloy-plated steel material having excellent corrosion resistance and surface quality, and a method for producing same.

A coated metallic substrate is provided, including, at least; one layer of oxides, such layer being directly topped by an intermediate coating layer comprising Fe, Ni, Cr and Ti wherein the amount of Ti is above or equal to 5 wt. % and wherein the following equation is satisfied: 8 wt. %<Cr+Ti<40 wt. %, the balance being Fe and Ni, such intermediate coating layer being directly topped by a coating layer being an anticorrosion metallic coating.