Abstract: Ferritic stainless steel is excellent in terms of both oxidation resistance and thermal fatigue resistance without adding expensive elements, such as Mo or W. The ferritic stainless steel, contains: C: 0.015 mass % or lower, Si: 1.0 mass % or lower, Mn: 1.0 mass % or lower, P: 0.04 mass % or lower, S: 0.010 mass % or lower, Cr: 16 to 23 mass % or lower, N: 0.015 mass % or lower, Nb: 0.3 to 0.65 mass %, Ti: 0.15 mass % or lower, Mo: 0.1 mass % or lower, W: 0.1 mass % or lower, Cu: 1.0 to 2.5 mass %, Al: 0.2 to 1.5 mass %, and the balance of Fe and inevitable impurities.

Abstract: A high-strength electric resistance welded steel tube has a composition including, in terms of percent by mass, C: 0.05 to 0.20%, Si: 0.5 to 2.0%, Mn: 1.0 to 3.0%, P: 0.1% or less, S: 0.01% or less, Al: 0.01 to 0.1%, N: 0.005% or less, and the balance being Fe and unavoidable impurities; and a structure which is a dual phase structure including a ferrite phase and a martensite phase, with a volume ratio of the martensite phase being 20 to 60%, wherein a tensile strength TS is 1180 MPa or more, an elongation El in a tube axis direction is 10% or more, and a yield ratio is less than 90%; and after application of a 2% prestrain and baking finishing that includes a heat treatment of 170° C.×10 min, a strength increase (BH value) is 100 MPa or more and a yield ratio is 90% or more.

Abstract: A ferritic stainless steel excellent in thermal fatigue resistance and oxidation resistance and also having toughness equivalent to or higher than that of Type 429 does not need to add an expensive element such as Mo or W. Specifically, the ferritic stainless steel includes C: 0.015 mass % or less, Si: 0.5 mass % or less, Mn: 0.5 mass % or less, P: 0.04 mass % or less, S: 0.006 mass % or less, Cr: 16 to 20 mass %, N: 0.015 mass % or less, Nb: 0.3 to 0.55 mass %, Ti: 0.01 mass % or less, Mo: 0.1 mass % or less, W: 0.1 mass % or less, Cu: 1.0 to 2.5 mass %, Al: 0.2 to 1.2 mass %, and the balance of Fe and inevitable impurities.

Abstract: Ferritic stainless steel is excellent in terms of both oxidation resistance and thermal fatigue resistance without adding expensive elements, such as Mo or W. The ferritic stainless steel, contains: C: 0.015 mass % or lower, Si: 1.0 mass % or lower, Mn: 1.0 mass % or lower, P: 0.04 mass % or lower, S: 0.010 mass % or lower, Cr: 16 to 23 mass % or lower, N: 0.015 mass % or lower, Nb: 0.3 to 0.65 mass %, Ti: 0.15 mass % or lower, Mo: 0.1 mass % or lower, W: 0.1 mass % or lower, Cu: 1.0 to 2.5 mass %, Al: 0.2 to 1.5 mass %, and the balance of Fe and inevitable impurities.

Abstract: A ferritic stainless steel sheet for forming a raw material pipe for bellows pipe is excellent in formability and high-temperature properties (high-temperature salt corrosion resistance and high-temperature fatigue properties). Specifically, the ferritic stainless steel sheet for forming a raw material pipe for bellows pipe contains 0.015% by mass or less of C, 1.0% by mass or less of Si, 1.0% by mass or less of Mn, 0.04% by mass or less of P, 0.010% by mass or less of S, 11% to 19% by mass of Cr, 0.015% by mass or less of N, 0.15% by mass or less of Al, 1.25% to 2.5% by mass of Mo, 0.3% to 0.7% by mass of Nb, 0.0003% to 0.003% by mass of B, and the balance being Fe and incidental impurities. In the ferritic stainless steel sheet for forming a raw material pipe for bellows pipe, preferably, the average crystal grain diameter D of the steel sheet is 35 ?m or less, and alternatively, the surface roughness Ra of the steel sheet is 0.40 ?m or less.

Abstract: A ferritic stainless steel sheet for forming a raw material pipe for bellows pipe is excellent in formability and high-temperature properties (high-temperature salt corrosion resistance and high-temperature fatigue properties). Specifically, the ferritic stainless steel sheet for forming a raw material pipe for bellows pipe contains 0.015% by mass or less of C, 1.0% by mass or less of Si, 1.0% by mass or less of Mn, 0.04% by mass or less of P, 0.010% by mass or less of S, 11% to 19% by mass of Cr, 0.015% by mass or less of N, 0.15% by mass or less of Al, 1.25% to 2.5% by mass of Mo, 0.3% to 0.7% by mass of Nb, 0.0003% to 0.003% by mass of B, and the balance being Fe and incidental impurities. In the ferritic stainless steel sheet for forming a raw material pipe for bellows pipe, preferably, the average crystal grain diameter D of the steel sheet is 35 ?m or less, and alternatively, the surface roughness Ra of the steel sheet is 0.40 ?m or less.

Abstract: A hybrid inflator which is made more compact and lighter is provided. An excessive internal pressure increase at a time of activation is prevented by setting a molar ratio (A/B) between a pressurized medium (A moles) charged in a housing 102 and an amount of a gas (B moles) generated due to combustion of a gas generating agent 122 to 8/2 to 1/9.

Abstract: A ferritic stainless steel plate of excellent ridging resistance and formability, as well as a manufacturing method thereof are proposed. Specifically, the rolling is conducted at a rolling reduction of 30% or more in at least 1 pass and at a temperature difference between the center of the plate thickness and the surface of 200° C. or lower in a pass for the maximum rolling reduction to cause the area ratio of a {111} orientation colony to be present by 30% or more in the regions of ⅛ to ⅜ and ⅝ to ⅞ of the plate thickness. The {111} orientation colony is an assembly of adjacent crystals in which the angle of <111> orientation vector for each of the crystals relative to the direction vector vertical to the rolling surface is within 15°.

Abstract: A gas-generant-molded-article for air bags which is prepared by molding a gas generant composition into a cylindrical form containing an opening hole, wherein the relationship between the linear burning velocity r (mm/second) of said gas generant composition under a pressure of 70 kgf/cm2 and a thickness W (mm) of said molded article falls within a range represented by 0.005≦W/(2·r)≦0.3, with the linear burning velocity preferably falling within a range of from 1 to 12.5 mm/second.

Abstract: A gas-generant-molded-article for air bags which is prepared by molding a gas generant composition into a cylindrical form containing an opening hole, wherein the relationship between the linear burning velocity r (mm/second) of said gas generant composition under a pressure of 70 kgf/cm2 and a thickness W (mm) of said molded article falls within a range represented by 0.005≦W/(2·r)≦0.3, with the linear burning velocity preferably falling within a range of from 1 to 12.5 mm/second.

Abstract: A ferritic stainless steel plate of excellent ridging resistance and formability, as well as a manufacturing method thereof are proposed. Specifically, the rolling is conducted at a rolling reduction of 30% or more in at least 1 pass and at a temperature difference between the center of the plate thickness and the surface of 200° C. or lower in a pass for the maximum rolling reduction to cause the area ratio of a {111} orientation colony to be present by 30% or more in the regions of ⅛ to ⅜ and ⅝ to ⅞ of the plate thickness. The {111} orientation colony is an assembly of adjacent crystals in which the angle of <111> orientation vector for each of the crystals relative to the direction vector vertical to the rolling surface is within 15°.

Abstract: A gas-generant-molded-article for air bags which is prepared by molding a gas generant composition into a cylindrical form containing an opening hole, wherein the relationship between the linear burning velocity r (mm/second) of said gas generant composition under a pressure of 70 kgf/cm2 and a thickness W (mm) of said molded article falls within a range represented by 0.005≦W/(2·r)≦0.3, with the linear burning velocity preferably falling within a range of from 1 to 12.5 mm/second.

Abstract: A ferritic stainless steel plate of excellent ridging resistance and formability, as well as a manufacturing method thereof are proposed. Specifically, the rolling is conducted at a rolling reduction of 30% or more in at least 1 pass and at a temperature difference between the center of the plate thickness and the surface of 200° C. or lower in a pass for the maximum rolling reduction to cause the area ratio of a {111} orientation colony to be present by 30% or more in the regions of ⅛ to ⅜ and ⅝ to ⅞ of the plate thickness. The {111} orientation colony is an assembly of adjacent crystals in which the angle of <111> orientation vector for each of the crystals relative to the direction vector vertical to the rolling surface is within 15°.

Abstract: A ferritic stainless steel plate of excellent ridging resistance and formability, as well as a manufacturing method thereof are proposed. Specifically, the rolling is conducted at a rolling reduction of 30% or more in at least 1 pass and at a temperature difference between the center of the plate thickness and the surface of 200° C. or lower in a pass for the maximum rolling reduction to cause the area ratio of a {111}orientation colony to be present by 30% or more in the regions of ⅛ to ⅜ and ⅝ to ⅞ of the plate thickness. The {111}orientation colony is an assembly of adjacent crystals in which the angle of <111> orientation vector for each of the crystals relative to the direction vector vertical to the rolling surface is within 15°.

Abstract: A gas-generant-molded-article for air bags which is prepared by molding a gas generant composition into a cylindrical form containing an opening hole, wherein the relationship between the linear burning velocity r (mm/second) of said gas generant composition under a pressure of 70 kgf/cm2 and a thickness W (mm) of said molded article falls within a range represented by 0.005≦W/(2·r)≦0.3, with the linear burning velocity preferably falling within a range of from 1 to 12.5 mm/second.

Abstract: Provided is a gas generant composition which is improved in the self-retainability of a solid residue and has an excellent combustion speed. The gas generant composition contains a fuel comprising a metal azide or an organic compound, an oxidizing agent, and at least one additive selected from a ceramic whisker or fiber of aluminum borate, potassium titanate, alumina, aluminum oxide, zirconium oxide, and zinc oxide.

Abstract: A gas generant for an air, which is improved in the defects of gas generants using sodium azide in a practical use and has stable combustion capability. And a molecular compound comprising (a) a gas generant component, (b) an oxidant component and (c) a reaction accelerator component, preferably represented by the composition formula (I).M.mX.nY (I)[wherein, M is Al Mg, Ca, Cr, Cu, Zn, Mn, Fe, Co, Sr, Ni and another metal components; X is a nitrogen-containing compound having 0 or 1 carbon atom; Y is an anion such as NO.sub.3 and ClO; m is a number of 1 to 3; and n is a number 2 to 3].

Abstract: The present invention is directed to an airbag system that includes a gas generant, which is improved in the defects of gas generants using sodium azide in a practical use and has stable combustion capability. A molecular compound comprising (a) a gas generant component, (b) an oxidant component and (c) a reaction accelerator component, preferably represented by the composition formula (I).M.mX.

Abstract: Provided is a gas generant composition which is improved in the self-retainabiity of a solid residue and has an excellent combustion speed. The gas generant composition contains a fuel comprising a metal azide or an organic compound, an oxidizing agent, and at least one additive selected from a ceramic whisker or fiber of aluminum borate, potassium titanate, alumina, aluminum oxide, zirconium oxide, and zinc oxide.

Abstract: In a mechanical ignition type gas generator including a housing which consists of an upper outer shell container (diffuser) and a lower outer shell container (closure) fitted to each other in such a manner as to define an annular space for storing therein a gas generating agent, a priming charge, a cooling material and a filter, and in which said closure has a cylindrical space capable of fitting to, and storing, a cylindrical mechanical igniter on its lower surface and a plurality of caps ignited by an ignition pin of said igniter are disposed on the top wall of said space, a hole for communicating a priming charge room with the front surface of said caps is disposed inside said closure of said housing besides a cap hole for communicating the back surface of said caps with said priming charge room so as to prevent delayed ignition of said caps.