Abstract: The method for manufacturing coated steel sheet has the steps of: immersing a steel sheet in a hot-dip coating bath to form an Al—Zn base coating layer containing 20 to 95 mass % Al on the steel sheet, forming a passivated layer on the coating layer; and applying thermal history to the coating layer. The thermal history is applied immediately after the steel sheet left the hot-dip coating bath or in a temperature range of from T(° C.) between 130° C. and 300° C. to 100° C.

Abstract: The object of the present invention relates to a plated steel material and a method of production the same, having enhanced corrosion resistance and workability required for outdoor and exposed uses such as structures, revetments, fishing nets, fences, etc.

Abstract: The present invention relates to a method for the manufacture of galvannealed metal sheet, wherein a hot strip is produced from an IF steel containing 0.01 to 0.1 wt. % silicon, wherein the hot strip is coiled at a coiler temperature no lower than 700° C. and no higher than 750° C., wherein a cold strip is rolled from the coiled hot strip, wherein the cold strip is recrystallisation-annealed in an annealing furnace in an annealing gas atmosphere, wherein the cold strip thus annealed is provided with a zinc coating in a zinc bath, and wherein the coated cold strip is post-annealed at a galvannealing temperature no lower than 500° C. and no higher than 540° C. The invention also relates to a galvannealed metal sheet which possesses improved adhesion of the coating layer to the base material and proposes a method which is suited for the manufacture of metal sheet having such properties.

Abstract: The present invention provides phosphate-treated galvanized steel sheet excellent in corrosion resistance and paintability, including: a phosphate-treated galvanized steel sheet excellent in corrosion resistance and paintability, comprising a phosphate film in an amount of at least 0.5 g/m2, containing at least 2 wt. % of Mg, and at least 0.5 wt. % in total of Ni and/or Mn, with at least 4 wt. % in total of Mg and Ni and/or Mn, formed on a zinc or zinc alloy plated steel sheet; and a phosphate-treated galvanized steel sheet excellent in corrosion resistance and paintability, comprising a phosphate film in an amount of at least 0.3 g/m2, preferably at least 1 g/m2, containing at least 2 wt. % of Mg, and at least 0.5 wt. % in total of Ni and/or Mn, with at least 5 wt. % in total of Mg and Ni and/or Mn, formed on a zinc or zinc alloy plated steel sheet.

Abstract: A composite material and a method of making a composite material is disclosed. The composite comprises a core of a precipitation hardenable metal having a coefficient of thermal expansion less than 9 parts per million/° C. in the temperature range of 20° C. to 100° C. The core material is clad with a transition metal or transition metal alloy cladding layer covering at least one surface of the core.

Abstract: The invention proposes a high-strength dual-phase cold rolled steel sheet having an excellent deep drawability, wherein the steel sheet has a composition comprising C: 0.01-0.08 mass %, Si: not more than 2.0 mass %, Mn: not more than 3.0 mass %, P: not more than 0.10 mass %, S: not more than 0.02 mass %, A1: 0.005-0.20 mass %, N: not more than 0.02 mass % and V: 0.01-0.5 mass %, provided that V and C satisfy a relationship of 0.5×C/12≦V/51≦3×C/12, and the remainder being Fe and inevitable impurities, and has a microstructure consisting of a ferrite phase as a primary phase and a secondary phase including martensite phase at an area ratio of not less than 1% to a whole of the microstructure and a high-strength dual-phase galvanized steel sheet comprising a galvanized coating on the above steel sheet as well as a method of producing the same.

Abstract: A process and an alloy for galvanizing non-reactive steel and mixed or moderately reactive steel for providing a decorative spangle to the galvanized coating. The alloy contains 0.1 to less than 0.8 wt % tin, 0.05 to 0.2 wt % bismuth, 0.001 to 0.008 wt % aluminum, and optionally 0 to 0.1 wt % nickel, the balance zinc of commercial purity.

Abstract: A steel for forming a high strength steel sheet contains, in mass %, C: at most 0.04%, Si: at most 0.4%, Mn: 0.5-3.0%, P: at most 0.15%, S: at most 0.03%, Al: at most 0.50%, N: at most 0.01%, and Mo: 0.01-1.0%. Steel sheet formed from the steel is suitable for use as automotive panels.

Abstract: The disclosure relates to a process for forming a deposit on the surface of a metallic or conductive surface. The process employs an electroless process to deposit a silicate containing coating or film upon a metallic or conductive surface.

Abstract: A metallurgical product, made of carbon steel and to be galvanized, which is in the form of a strip or of a sheet obtained from a continuously cast intermediate product having the following composition by weight: 0.0005%≦C≦0.15%; 0.08%≦Mn≦2%; Si≦0.040%; Altotal≦0.010%; Alsoluble≦0.004%; 0.0050%≦Ototal≦0.0500%; P≦0.20%; S≦0.10%; each of Cu, Cr, Ni, Mo, W, Co≦1%; each of Ti, Nb, V, Zr≦0.5%; each of Sn, Sb, As≦0.1%; B≦0.1%; N≦0.0400%; and the remainder being iron and impurities. Also, a process for obtaining a metallurgical intermediate product, which includes: producing in a ladle a liquid steel the composition of which is as above, and in which the dissolved oxygen content is maintained between 0.0050 and 0.0500% by the establishment of a chemical equilibrium between the metal and the ladle slag; and casting said steel on a continuous casting machine.

Abstract: A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compound constituent in effective amounts to control the spangle facet size of the coated product, improve tension bend rust stain performance, improve coated surface appearance when brushed, and coated product paintability. Constituents include borides such as titanium boride and aluminum borides, carbides such as titanium carbide, and aluminides such as titanium aluminide. The method produces a coated steel product that does not require temper rolling for painting.

Abstract: The present invention provides a steel sheet having a chemical composition comprising 0.15% or less C, 2.0% or less Si, 3.0% or less Mn, P, S, Al and N in adjusted amounts, from 0.5 to 3.0% Cu, or one or more of Cr, Mo and W in a total amount of 2.0% or less, and having a composite structure comprising ferrite and martensite having an area ratio of 2% or more. The steel sheet is in the form of a high-strength hot-rolled steel sheet, a high-strength cold-rolled steel sheet, or a hot-dip galvanized steel sheet. There is thus available a steel sheet excellent in press-formability and in strain age hardening property as represented by a &Dgr;TS of 80 MPa or more.

Abstract: A metal-mineral system and method for making and using it. The metal-mineral system creates a bond between a metallic substrate and a top layer, preferably of rubber (to be adhered to). The metal-mineral system includes a fine crystalline coating of hureaulite (manganous iron phosphate) that is formed at less than 80° C. as a conversion coating onto the metallic substrate. The conversion coating passivates the metallic substrate and provides an enhanced surface area of contact that anchors the adhesive to the conversion coating. An adhesive is bonded to the conversion coating. A rubber top layer is applied to the adhesive. The metal-mineral system is resistant to breakage under stress and chemical attack. The method for making the metal-mineral system creates a reduced quantity of sludge with a beneficial effect on waste treatment procedures.

Abstract: A steel for forming a high strength steel sheet contains, in mass %, C: at most 0.04%, Si: at most 0.4%, Mn: 0.5-3.0%, P: at most 0.15%, S: at most 0.03%, Al: at most 0.50%, N: at most 0.01%, and Mo: 0.01-1.0%. Steel sheet formed from the steel is suitable for use as automotive panels.

Abstract: A dual phase high strength cold rolled steel having controlled amounts of carbon, manganese, and molybdenum is used as a starting material in a galvanizing/galvannealing process. Conditions in a multi-zone furnace of the galvanizing line can be controlled in a conventional manner while still effectively coating the high strength steel. A dual phase high strength steel product is made having a uniform coating of zinc in spite of the high manganese content of the steel.

Abstract: A TRIP-type high strength steel plate having good workability is provided which, while reducing the amount of alloying elements added which increase the production cost, ensures a contemplated retained austenite structure, has good adhesion to zinc plating, and can also be applied to highly corrosion resistant surface treated steel plates. The high strength steel plate having improved workability and plating adhesion is such that a high concentration, i.e., 0.03 to 2.0% by weight, of nitrogen is incorporated, the contents of silicon and aluminum, which form nitride, are preferably regulated respectively to not more than 0.5% by weight and not more than 0.3% by weight, and, in addition, calcium, sodium, magnesium, etc. are optionally added to control the formation of iron nitride, whereby the volume fraction of the retained austenite phase in the metal structure is regulated to 3 to 20% by weight.

Abstract: The hot dip Zn galvanized steel sheet has excellent balance between tensile strength and ductility and excellent coating adhesion, an average composition of a base steel thereof includes: 0.05-0.25 mass % of C; not more than 2.0 mass % of Si; 1.0-2.5 mass % of Mn; and 0.005-0.10 mass % of Al, wherein the C content at the base steel surface layer portion right under a coating layer is not more than 0.02 mass %, the base steel structure contains not less than 50% of martensite phase, the martensite phase including both tempered martensite phase and fine size martensite phase, and the remaining portion of the base steel structure being formed by ferrite phase and residual austenite phase. A method of producing the hot dip Zn galvanizing steel sheet is described.

Abstract: The coated steel sheet includes a zinc phosphate coating containing Mg on a surface of a galvanized steel sheet, and an orthophosphoric acid ester-containing coating on a surface of the zinc phosphate coating. The coated steel sheet has no coating fall-off even during a chemical conversion treatment step of an automobile producing line and has excellent perforative corrosion resistance either with no-painting or after electrodeposition painting, chemical conversion treatability and press formability.

Abstract: A high Al hot-dip Zn—Al—Mg plated steel sheet is obtained by forming on a steel sheet surface a hot-dip plating layer comprising, in mass %, Al: more than 10 to 22% and Mg: 1-5%, and, optionally, Ti: 0.002-0.1%, B: 0.001-0.045% and Si: 0.005-0.5%. The plating layer exhibits a metallic structure of [primary crystal Al phase] mixed in a matrix of [Al/Zn/Zn2Mg ternary eutectic crystal structure]. Substantially no Zn11Mg2 phase is present in the metallic structure of the plating layer.

Abstract: Steel sheet having organic coating comprises: a zinc or a zinc alloy plated steel sheet or an aluminum or an aluminum alloy plated steel sheet; a composite oxide coating formed on the surface of the plated steel sheet and containing at least one metal selected from the group consisting of Mn and Al; and an organic coating formed on the composite oxide coating and containing a rust-preventive additive component.

Abstract: Disclosed are a steel plate and a hot-dip galvanized steel plate, superior in terms of high electromagnetic shield capacity. The steel plate is prepared from a composition comprising C, N and S in an amount of 0.150% by weight or less in total; Mn in an amount of 0.1 to 1.0% by weight; Si in an amount of 0.5% by weight or less; Al in an amount of 1.0% by weight or less; P in an amount of 0.06% by weight or less; and Fe for the remainder, and inevitable elements, and shows a yield strength of 18 kg/mm2 or higher, and an elongation of 40% or higher. The hot-dip galvanized steel plate is prepared from a composition comprising C, N and S in an amount of 0.0150% by weight or less in total; Mn in an amount of 0.2 to 0.8% by weight; Al in an amount of 0.6% by weight or less; Si in an amount of 0.4% by weight or less; P in an amount of 0.06% by weight or less, with the proviso that the sum of Mn, Al, Si and P amounts to 0.2˜1.0% by weight; and Fe for the remainder, and inevitably present elements.

Abstract: A new processed steel sheet comprising of a steel base coated with a Zn or its alloy plating layer and a converted layer, which contains both of at least an insoluble or scarcely-soluble metal compound and at least a soluble metal compound. The insoluble or scarcely-soluble compound may be one or more of valve metal oxides or hydroxides, and the soluble compound may be one or more of valve metal fluorides. The converted layer may be also composed of one or more of complex compounds of Mn and Ti. The insoluble or scarcely-soluble compound acts as a barrier for insulation of a steel base from an atmosphere, while the soluble compound exhibits a self-repairing faculty to repair defective parts of the converted layer. Due to the converted layer, the processed steel sheet is remarkably improved in corrosion resistance, without the presence of chromium compounds which would put harmful influences on the environment.

Abstract: The process for preparing copper-film-plated steel cord (hereafter abbreviated as copper-plated cord) of 20-90 nm of copper film for vehicle tire, by plating zinc or tin with strong tendency of ionization on the surface of steel cord and after drawing the zinc or tin-plated cord, and then plating copper film onto it contacting with cupric sulfate solution of 10 to 50 gram per litter.

Abstract: Disclosed are a high-strength steel plate with excellent electromagnetic shield capacity and a method for manufacturing the same. The steel plate is manufactured from a composition comprising C, N and S in an amount of 0.0150% by weight or less in total; Mn in an amount of 0.2 to 0.8% by weight; Al in an amount of 0.6% by weight or less; Si in an amount of 0.4% by weight or less; Cu and/or Sn in an amount of 0.1 to 0.6% by weight in total; and Fe for the remainder, and inevitably present elements, whereby the steel plate can show excellent electromagnetic shield effect and hot-dip galvanization property.

Abstract: As to a steel composition, in this invention, Si content is regulated to a given range and Nb and Cu or Ni, Mo are compositively added, and a recrystallization annealing is carried out to form an internal oxide layer just beneath a surface of a steel sheet and a surface oxide simultaneously formed on the surface of the steel sheet is removed by pickling. As a result, the formation of oxides of Si, Mn and the like is considerably decreased on the surface of the steel sheet in a subsequent heating before plating because the above internal oxide layer acts as a diffusion barrier.

Abstract: A method of treating a metal surface by application of a solution containing at least one vinyl silane and at least one bis-silyl aminosilane. A solution composition having at least one vinyl silane and at least one bis-silyl aminosilane is also provided, along with a silane coated metal surface.

Abstract: The invention concerns a steel plate coated with a metal layer based on zinc and a zinc hydroxysulphate layer, whereof the surface density of sulphur is more than 0.5 mg/m2. The invention also concerns a method for obtaining said plate by treating a zinc coated sheet metal: either in a highly alkaline sulphate solution under polarization; or in a sulphate solution containing Zn2+ ions without polarization. The hydroxysulphate deposit brings about a pre-lubricating effect applicable to operations for forming sheet metal.

Abstract: Enameled steel and process for enameling a zinc or zinc-alloy precoated steel surface includes providing steel having a surface to be precoated and enameled; applying a zinc or zinc-alloy coating having a thickness ranging from 1 to 30 &mgr;m to the surface of the steel to provide the zinc or zinc-alloy precoated steel surface; subjecting the zinc or zinc-alloy precoated steel surface to a heat pretreatment at a temperature of at least 500° C.; and enameling the zinc or zinc-alloy precoated steel surface with a vitreous enamel composition which has a content of adherence-providing oxides selected from the group consisting of Co, Ni, Cu, Sb and Mn of less than 0.1% by weight for a white enamel layer and less than 2.5% by weight for a colored enamel layer by firing the vitreous enamel composition to provide a vitreous enamel layer thereon.

Abstract: Disclosed is a cold-rolled steel sheet excellent in formability, panel shapeability and dent-resistance, comprising 0.005 to 0.015% by weight of C, 0.01 to 0.2% by weight of Si, 0.2 to 1.5% by weight of Mn, 0.01 to 0.07% by weight of P, 0.006 to 0.015% by weight of S, 0.01 to 0.08% by weight of sol. Al, not higher than 0.004% by weight of N (N≦0.004%), not higher than 0.003% by weight of O (O≦0.003%), 0.04 to 0.23% by weight of Nb, 1.0≦(Nb %×12)/(C %×93)≦3.0, and a balance of Fe and unavoidable impurities, said cold-rolled steel sheet meeting the relationship given below: exp(&egr;)×(5.29×exp(&egr;)−4.19)≦&sgr;/&sgr;0.2≦exp(&egr;)×(5.64×exp(&egr;)−4.49) where 0.002<&egr;≧0.096, &egr; represents a true strain, &sgr;0.2 represents a 0.2% proof stress, and &sgr; represents a true stress relative to &egr;.

Abstract: The invention relates to a high strength hot-dip galvanized and galvannealed steel sheets with excellent drawability for press forming and excellent plating adhesion that is useful as a member for automobiles, construction, electric devices and the like, and to a process for its manufacture. According to an embodiment of the invention, the steel sheet contains in terms of weight percent, C: 0.05-0.2%, Si: 0.2-2.0%, Mn: 0.2-2.5%, Al: 0.01-1.5%, Ni: 0.2-5.0%, P: <0.03% and S: <0.02%, the relationship between Si and Al being such that 0.4(%)≦Si+0.8 Al(%)≦2.0% and the remainder consisting of Fe and unavoidable impurities, the volume percentage of the retained austenite is 2-20% and the steel sheet surface wherein the relationship between the Ni and Si, Al in 0.5 &mgr;m of the steel sheet surface layer is such that Ni(%)≦¼ Si+⅓Al(%), has a Zn plating layer comprising Al: ≦1% with the remainder Zn and unavoidable impurities.

Abstract: The method for manufacturing galvanized steel sheet has a step of adjusting the surface texture thereof by blasting solid particles against the surface thereof. The surface texture is defined by at least one parameter selected from the group of parameters consisting of mean roughness Ra on the surface of steel sheet, peak count PPI on the surface of steel sheet, and filtered centerline waviness Wca on the surface of steel sheet. The galvanized steel sheet has a surface in dimple-pattern texture.

Abstract: The object of the present invention relates to a plated steel material and a method of production the same, having enhanced corrosion resistance and workability required for outdoor and exposed uses such as structures, revetments, fishing nets, fences, etc.

Abstract: The present invention is directed to a metal block suitable for machining, the metal block comprising at least two superimposed metal plates, each having a thickness of at least 12.5 mm, wherein the yield strength of the block is at least 75% of the yield strength of the initial metal plate(s).

Abstract: A galvannealed steel sheet superior in workability wherein the steel sheet is characterized by containing silicon in an amount no less than 0.8 mass% and retained austenite in an amount no less than 3% (in terms of packing factor) and the alloy zinc plating is characterized by containing Zn-Fe alloy crystal grains which exist in its surface layer and have a specific crystal grain size such that the longer side of a crystal grain is no larger than twice the shorter side of a crystal grain and the number of crystal grains with an average particle size no smaller than 4 &mgr;m is no more than 5 per 70×50 &mgr;m.

Abstract: The present invention provides a corrosion resistant resin coating excellent in corrosion resistance, weather resistance and chemical resistance, mechanically tough and strong and having high heat resistance temperature. A steel tube optionally having a copper layer is formed. Then, a zinc or zinc/nickel plating layer is formed on the outer circumferential surface of the steel tube, and a chromate film comprising a trivalent chromium compound is formed on the zinc or zinc/nickel plating layer. At least one layer of a kind of resin selected from the group consisting of polyvinyl fluoride, polyvinylidene fluoride, polypropylene, polyethylene and polyamide resins is formed, as required, through a primer. Sufficiently satisfactory results are obtained in corrosion resistance test.

Abstract: To provide a steel sheet excellent in painting bake hardenability and anti aging property at room temperature: containing, in mass, 0.0001 to 0.20% of C, 2.0% or less of Si, 3.0% or less of Mn, 0.15% or less of P, 0.015% or less of S, and, in addition, 010% or less of Al and 0.001 to 0.10% of N so as to satisfy the expression 0.52Al/N<5 and, further, one or more of 2.5% or less of Cr, 1.0% or less of Mo and 0.1% or less of V so as to satisfy the expression (Cr+3.5MO+39V) ≧0.1, with the balance consisting of Fe and unavoidable impurities; having the value of BE170, evaluated after applying a 2% tensile deformation and then a heat treatment at 170° C. for 20 min., being 45 MPa or more, and any of the value of BH160, evaluated after applying a 2% tensile deformation and then a heat treatment at 160° C. for 10 min., and the value of BH150, evaluated after applying a 2% tensile deformation and then a heat treatment at 150° C. for 10 min.

Abstract: The coating plant includes a device for running a sheet to be coated along a traveling path past a window for the evaporation or sublimation of elements A an B, sources for the evaporation or sublimation of elements A and element B placed successively in a direction parallel to the traveling path so as to emit elements A and B through the window and a screen for reducing the angle of emission from the source of element B below the limit represented by an exit edge of the window, the screen being mounted so as to move translationally perpendicular to the traveling path and to move along the traveling path between the source of element A and the source of element B so as to obtain either a —A—AB—A— or a —B—AB—B—coating.

Abstract: A composite material and a method of making a composite material is disclosed. The composite comprises a core of a precipitation hardenable metal having a coefficient of thermal expansion less than 9 parts per million/° C. in the temperature range of 20° C. to 100° C. The core material is clad with a transition metal or transition metal alloy cladding layer covering at least one surface of the core.

Abstract: A method is disclosed for laser lap welding a pair of metal members together. At least one of the pair of metals having a protective metal layer. Each of the metal members having a melt temperature greater than the melt temperature of the protective metal layer. The method includes placing one end of the pair of metal members in an overlapping relation to an other end of the pair of metal members to form an overlapping section. The method also includes inserting a metal alloying agent between the pair of metal members of the overlapping section to form a gap therebetween. A laser welder is used to join the pair of metal members and the alloy agent together so that the protective metal layer and the alloying agent are melted to form an alloy layer between the pair of metal members.

Abstract: A painted steel article having a steel surface, being plated with a corrosion-resistant coating. The corrosion-resistant coating contains at least 90% zinc, cobalt, at least one trivalent or higher-valent metal, and at least one colloidal inorganic material. The paint is then electrodeposited directly on the corrosion-resistant coating.

Abstract: An object of the present invention is to provide a hot-dip galvanized steel sheet which is excellent in adhesion with a hot-dip galvanized zinc layer, and has high tensile strength and good formability even when a steel sheet containing Si and Mn in relatively larger amounts is used as a basis steel sheet. The hot-dip galvanized steel sheet is composed of: a basis steel sheet containing Si in an amount of 0.05 to 2.5% and Mn in an amount of 0.2 to 3%, by mass; a Fe plated layer formed on the basis steel sheet; and a hot-dip galvanized zinc layer formed on the surface layer of the basis steel sheet via the Fe plated layer, wherein oxides containing Si and/or Mn are discontinuously dispersed in the vicinity of the interface between the basis steel sheet and the Fe plated layer.

Abstract: A surface-treated steel sheet includes a steel sheet, an Al—Zn-base alloy plating layer formed on the steel sheet, a chemical conversion film provided on the alloy plating layer, and a concentric layer of a Cr compound that is formed on the alloy plating layer of the chemical conversion film. The surface-treated steel sheet may include a steel sheet, an zinc-base plating layer formed on the steel sheet, and a film that contains chromium and calcium and that is formed on the zinc-base plating layer.

Abstract: A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compound constituent in effective amounts to decrease the spangle facet size of the coated product, improve tension bend rust stain performance, and coated product paintability. Constituents include borides such as titanium boride and aluminum borides, carbides such as titanium carbide, and aluminides such as titanium aluminide. The method produces a coated steel product that does not require temper rolling for painting.

Abstract: A coated steel material excellent in corrosion resistance and a method of producing the same, wherein a coated steel material has on the surface of the steel sheet a Zn-alloy coating layer containing 1-10 wt % of Mg, 2-19 wt % of Al and 0.01-2 wt % of Si, where Mg and Al satisfy Mg (%)+Al (%)≦20%, the balance being Zn and unavoidable impurities, and has a coating layer structure of a Mg intermetallic compound or the like. As a base metal treatment, it is preferably provided with a Ni coating layer. The coated Zn-alloy coated steel sheet may have provided on the coating layer, as an intermediate layer, a chromate film layer, and, as an upper layer, an organic coating layer. The Zn-alloy coating layer may further contain one or more of 0.01-1 wt % of In, 0.01-1 wt % of Bi and 1-10 wt % of Sn. The coated steel material may be painted.

Abstract: A method is disclosed for laser lap welding a pair of metal members together. At least one of the pair of metal members having a protective metal layer. Each of the metal members having a melt temperature greater than the melt temperature of the protective metal layer. The method includes placing one end of the pair of metal members in an overlapping relation to an other end of the pair of metal members to form an overlapping section. The method also includes inserting a metal alloying agent between the pair of metal members of the overlapping section to form a gap therebetween. A laser welder is used to join the pair of metal members and the alloying agent together so that the protective metal layer and the alloying agent are melted to form an alloy layer between the pair of metal members.

Abstract: A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compound constituent in effective amounts to decrease the spangle facet size of the coated product, improve tension bend rust stain performance, improve coated surface appearance when brushed, and coated product paintability. Constituents include borides such as titanium boride and aluminum borides, carbides such as titanium carbide, and aluminides such as titanium aluminide. The method produces a coated steel product that does not require temper rolling for painting.

Abstract: Coatings containing particulate metal alloy are disclosed. The coatings provide corrosion protection to a substrate, such as a metal substrate. The coatings contain zinc-metal-containing alloy in flake form, most particularly an alloy flake of zinc and aluminum. The coating can be from compositions that are water-based or solvent-based. The compositions for providing the coating may also contain a substituent such as a water-reducible organofunctional silane, or a hexavalent-chromium-providing substance, or a titanate polymer, or a silica substance constituent. The coating may desirably be topcoated.

Abstract: The present invention provides a weldable, coated metal substrate having a pretreatment coating including a reaction product of at least one epoxy-functional material and at least one phosphorus-containing material or amine-containing material and a weldable coating having an electroconductive pigment and a binder deposited thereon.

Abstract: A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compound constituent in effective amounts to decrease the spangle facet size of the coated product, improve tension bend rust stain performance, improve coated surface appearance when brushed, and coated product paintability. Constituents include borides such as titanium boride and aluminum borides, carbides such as titanium carbide, and aluminides such as titanium aluminide. The method produces a coated steel product that does not require temper rolling for painting.

Abstract: A hot-dip galvanized steel sheet is produced by rough rolling a steel, finish rolling the rough rolled steel at a temperature of Ar3 point or more, coiling the finish rolled steel at a temperature of 700° C. or less, and hot-dip galvanizing the coiled steel at a pre-plating heating temperature of Ac1 to Ac3. A continuous hot-dip galvanizing operation is performed by soaking a pickled strip at a temperature of 750 to 850° C., cooling the soaked strip to a temperature range of 600° C. or less at a cooling rate of 1 to 50° C. per second, hot-dip galvanizing the cooled strip, and cooling the galvanized strip so that the residence time at 400 to 600° C. is within 200 seconds. The steel sheet has a structure consisting essentially of ferrite and martensite.