Class / Patent application number | Description | Number of patent applications / Date published |
420067000 | Molybdenum or tungsten containing | 9 |
20100158745 | PISTON RING MATERIAL FOR INTERNAL COMBUSTION ENGINE - A piston ring material that when formed into a piston ring product, maintains excellent properties, and that at the production of piston ring rod, realizes excellent processability and shape stability. There is provided a piston ring material for internal combustion engine comprising, by mass, 0.5 to less than 0.7% C, 1.0% or less Si, 1.0% or less Mn, 12.0 to 16.0% Cr, 3.0% or less Mo and/or W (Mo+1/2W), 0.02 to 0.14% N and the balance Fe and unavoidable impurities, wherein the relationship of contained C, N and Cr satisfies the formulae: 25≦43.22C (%)+42.45N (%)−0.02Cr (%)<40, and 0.15 <0.92C (%)+0.67N (%)−0.03Cr (%)<0.30. | 06-24-2010 |
20130309126 | Martensitic Stainless Steel Highly Resistant to Corrosion, and Method for Manufacturing Same - Provided is a martensitic stainless steel having excellent productivity and high corrosion resistance, which comprises, as percentages by weight, 0.45 to 0.60% carbon, 0.02 to 0.08% nitrogen, 0.2 to 0.4% silicon, 0.3 to 0.6% manganese, 12 to 15% chrome, one or more kinds of 0.1 to 1.5% molybdenum or 0.1 to 1.5% tungsten and Fe and other unavoidable impurities as remnants. | 11-21-2013 |
20150078953 | TWO-PHASE STAINLESS STEEL, THIN SHEET MATERIAL AND DIAPHRAGM USING TWO-PHASE STAINLESS STEEL - To provide a two-phase stainless steel, a thin sheet material and a diaphragm including the same capable of achieving high strength and excellent corrosion resistance as well as obtaining a smooth surface state. The two-phase stainless steel of the present invention includes a composition of Cr: 24 to 26 mass %, Mo: 2.5 to 3.5 mass %, Ni: 5.5 to 7.5 mass %, C≦0.03 mass %, N: 0.08 to 0.3 mass %, remaining part: Fe and unavoidable impurities, in which 2.0 mass % or less of Mn is contained if necessary, and the particle size of inclusion particles including an Al oxide or a Mn oxide caused by unavoidable impurities Al and Mn existing in a metal structure is 3 μm or less. | 03-19-2015 |
420068000 | Titanium, zirconium or hafnium containing | 5 |
20090081070 | Metal alloy for golf club head - For making a rustproof golf club head economically in an environment friendly manner without electroplating to facilitate ball control, a metal alloy is disclosed containing carbon (C) 0.08% max, silicon (Si) 1.5% max.manganese (Mn) 1.5% max, chrome (Cr) 16˜28%, nickel (Ni) 1% max, cerium (Ce) 1.5% max, phosphor (P) 0.03% max, sulfur (S) 0.02%, and iron to make 100%. | 03-26-2009 |
20090098009 | Low Chromium Stainless Steel Superior in Corrosion Resistance of Multipass Welded Heat Affected Zones and Its Method of Production - The present invention provides optimal low chromium stainless steel preventing the deterioration in corrosion resistance at the weld zone in the case of multipass welding, superior in grain boundary corrosion resistance of the weld zone even in a harsh corrosive environment, simultaneously free from preferential corrosion at the heat affected zones near weld fusion lines, and further superior in manufacturability, that is, low chromium stainless steel containing, by mass %, C: 0.03% or less, N: 0.004 to 0.02%, Si: 0.2 to 1%, Mn: over 1.5 to 2.5%, P: 0.04% or less, S: 0.03% or less, Cr: 10 to 15%, Ni: 0.2 to 3.0%, and Al: 0.005 to 0.1%, further containing Ti: 4×(C %+N %) to 0.35%, and having a balance of Fe and unavoidable impurities, having a γp(%) expressed by a predetermined formula satisfying 80 or more, and satisfying Ti %×N %<0.004 as well. | 04-16-2009 |
20120177531 | STEEL POWDER COMPOSITION AND SINTERED BODY THEREOF - A powder composition and a sintered body thereof are presented. The powder is a martensitic stainless steel powder for powder injection molding without deformation problems during sintering. The powder composition includes 0.80-1.40 weight percent (wt %) of carbon (C), less than 1.0 wt % of silicon (Si), less than 1.0 wt % of manganese (Mn), 15.0-18.0 wt % of chromium (Cr), 0.10-2.50 wt % of titanium (Ti), and the remainder iron (Fe). The powder can be sintered with a sintering temperature varying within 50° C. and can reach a high density without distortion, and thereby a good dimensional stability is obtained. | 07-12-2012 |
20120195785 | Cast Steel Alloy and Cast Component - The present invention relates to a cast steel alloy for producing cast parts with ferritic structure, wherein the alloy contains iron (Fe), carbon (C), chromium (Cr) and molybdenum (Mo). | 08-02-2012 |
20150315686 | HOT-ROLLED STAINLESS STEEL SHEET HAVING EXCELLENT HARDNESS AND LOW-TEMPERATURE IMPACT PROPERTIES - A hot-rolled stainless steel sheet having excellent hardness and low-temperature impact properties, in which a ferrite is formed with martensite as a matrix structure, is manufactured by a steel manufacturing process, a continuous casting process, and a hot-rolling process. The hot-rolled stainless steel sheet comprises C, N, Si, Mn, Cr, Ni, Ti, Nb, Mo, and the remainder being Fe and other inevitable impurities, wherein C is 0.01 to 0.03 wt %, Cr is 11 to 14 wt %, Ti is 0.1 to 0.2 wt %, and Nb is 0.1 to 0.2 wt %. The ferrite stability (FS) expressed by the following [formula 1] is 5 to 50, and a ferrite is formed with martensite as a matrix structure. [Formula 1] 4 FS=−215−619C−16.6Mn+23.7Cr−36.8Ni+42.2Mo+96.2Ti+67Nb−237N+17.2Si, wherein the numerical value of each component described in [Formula 1] denotes the content (wt %) of each component. | 11-05-2015 |
420069000 | Vanadium, niobium or tantalum containing | 1 |
20130022489 | HEAT-RESISTANT, FERRITIC CAST STEEL HAVING EXCELLENT ROOM-TEMPERATURE TOUGHNESS, AND EXHAUST MEMBER MADE THEREOF - A heat-resistant, ferritic cast steel having excellent room-temperature toughness, which has a composition comprising by mass 0.32-0.48% of C, 0.85% or less of Si, 2% or less of Mn, 1.5% or less of Ni, 16-19.8% of Cr, 3.2-5% of Nb, Nb/C being 9-11.5, 0.15% or less of N, 0.002-0.2% of S, and 0.8% or less in total of W and/or Mo, the balance being Fe and inevitable impurities, and a structure in which a eutectic (δ+NbC) phase formed from a δ phase and Nb carbide (NbC) has an area ratio of 60-90%, and an exhaust member made thereof. | 01-24-2013 |