Abstract: The present invention relates to a mechanical part, which is obtained by: processing a steel into a shape of a part, the steel having an alloy composition containing, by weight percent, C: 0.10 to 0.30%, Si: 0.50 to 3.00%, Mn: 0.30 to 3.00%, P: 0.030% or less, S: 0.030% or less, Cu: 0.01 to 1.00%, Ni: 0.01 to 3.00%, Cr: 0.20 to 1.00%, Al: 0.20% or less, N: 0.05% or less, and the remainder of Fe and inevitable impurities, and the alloy composition satisfying the following condition: [Si %]+[Ni %]+[Cu %]?[Cr %]>0.50, in which [Si %], [Ni %], [Cu %] and [Cr %] represent the concentration of Si, the concentration of Ni, the concentration of Cu and the concentration of Cr in the alloy composition, respectively; subjecting the steel to a carburizing treatment in a vacuum, followed by gradually cooling the steel; and subsequently subjecting the steel to a high-frequency hardening to thereby harden a surface of the steel.

Abstract: The present invention describes an upset SCR of novel low carbon chemical composition and microstructure as well as method of manufacturing the same, which achieves higher improvement in the fatigue life as it is integral with the riser pipe section at the Touch Down Zone. The low carbon upset SCR achieves its desired properties by the thermal treatment which it is subjected to. The novel low carbon chemical composition and microstructure comprises in weight per cent, carbon 0.04-0.10, manganese 0.40-0.70, silicon 0.15-0.35, chromium 0.40-0.70, molybdenum 0.40-0.70, nickel 0.10-0.40, nitrogen 0.008 max, aluminum 0.010-0.045, sulfur 0.005 max, phosphorus 0.020 max, titanium 0.003-0.020, niobium 0.020-0.035, vanadium no more than 0.10, copper 0.20 max, tin 0.020 max, and carbon equivalent 0.43 max and PCM no more than 0.23 and having a yield strength of at least of 65000 psi, the ultimate tensile strength of at least 77000 psi and YS/UTS ratio below 0.

Abstract: The invention relates to a steel for the production of submarine hulls, which is characterised in that the chemical composition thereof comprises, by weight percent: 0.03%?C<0.08%; 0.04%?Si?0.48%; 0.1%?Mn?1.4%; 2%?Ni?4%; Cr?0.3%; 0.3%?Mo+W/2+3(V+Nb/2+Ta/4)?0.89%; Mo?0.15%; V+Nb/2+Ta/4?0.004%; Nb?0.004%; Cu?0.45%; Al?0.1%; Ti?0.04%; N?0.03%; the remainder comprising iron and impurities resulting from production, boron being an impurity with a concentration of less than 0.0005% and P+S?0.015%, the chemical composition satisfying condition 410?540×C0.25+245[Mo+W/2+3(V+Nb/2+Ta/4)]0.30?460. The inventive steel has an essentially martensitic or lower bainitic structure comprising at least 90% martensite or lower bainite, at most 5% residual austenite, at most 5% ferrite. The steel has a yield strength of between 480 MPa and 620 Mpa and a Charpy toughness V, KCV at ?60° C. of more than 50 J.

Abstract: The present invention provides a steel material able to secure a superior corrosion resistance in a sulfuric acid dew point corrosive environment of exhaust gas obtained by burning high S-containing fuel, containing, by mass %, C: ?0.010%, Si: ?0.10%, Cu: 0.05 to 1.00%, P: ?0.030%, S: ?0.050%, and Al: ?0.10% and comprising a balance of Fe and unavoidable impurities. Further, this steel contains one type or two types or more of Sb, Sn, Cr, Mn, Mo, Ni, Nb, V, Ti, and B.

Abstract: Method for reducing the segregated seams of a steel which has high mechanical strength and high wear resistance and whose composition comprises by weight: 0.30%?C?1.42%; 0.05%?Si?1.5%; Mn?1.95%; Ni?2.9%; 1.1%?Cr?7.9%; 0.61%?Mo?4.4%; optionally V?1.45%, Nb?1.45%, Ta?1.45% and V+Nb/2+Ta/4?1.45% ; less than 0.1% of boron, less than 0.19% of (S+Se/2+Te/4), less than 0.01% of calcium, less than 0.5% of rare earths, less than 1% of aluminum, less than 1% of copper; the balance being iron and impurities resulting from the production operation. The composition further complies with: 800?D?1150 with D=540(C)0.25+245 (Mo+3 V+1.5 Nb+0.75 Ta)0.30+125 Cr0.20+15.8 Mn+7.4 Ni+18 Si. According to the method, the molybdenum is completely or partially replaced with double the proportion of tungsten so that W>0.21%, and Ti, Zr, C are adjusted so that, after adjustment, Ti+Zr/2?0.2 W, (Ti+Zr/2)×C?0.07, Ti+Zr/2?1.49% and D is unchanged at approximately 5%. Steel obtained and method for producing a steel workpiece.

Abstract: A steel plate has a C content between 0.05 to 0.18% by mass (hereinafter, content will be expressed simply in “%”), a Si content between 0.10 to 0.50%, a Mn content between 1.2 to 2.0%, an Al content between 0.01 to 0.10%, a Cr content between 0.05 to 0.30% and a V content between 0.01 to 0.05%, and meets a condition expressed by expression (1). 6.7[Cr]+4.5[Mn]+3.5[V]?7.2% ??(1) where [Cr], [Mn] and [V] represent a Cr content, a Mn content and a V content in percent by mass, respectively. The strength reduction of the steel sheet is small even if the steel sheet is subjected for a long time to a stress relief annealing process after being processed by welding. Cracks do not form in the steel plate when the steel plate is welded.

Abstract: A vehicle is armored the steps of sequentially making a steel plate with a thickness of 4 mm to 15 mm of by weight 0.2 to 0.4% carbon, 0.3 to 0.8% silicon, 1.0 to 2.5% manganese, max. 0.02% phosphorous, max. 0.02% sulfur, max. 0.05% aluminum, max. 2% copper, 0.1 to 0.5% chromium, max. 2% nickel 0.1 to 1% molybdenum, 0.001 to 0.01% boron, 0.01 to 1% tungsten, max. 0.05% nitrogen, and balance iron and impurities. This plate is heated to above the AC3 temperature and deformed without cooling in a press. While still in the press, the steel plate is cooled and cured. Then the deformed and cured steel plate is taken out of the press and mounted on the motor vehicle without significant further working or shaping.

Abstract: A relatively high strength high toughness medium Carbon Copper-Nickel-Chromium alloy steel and method that eliminates and/or reduces the use of scarce, expensive alloying elements and is lower in cost than existing high strength high toughness alloy steels with comparable strength and toughness properties. In a first embodiment, the alloy steel is comprised of by weight about 0.40–1.00% Copper, about 2.50–8.00% Nickel, and about 0.80–3.50% Chromium. In a second embodiment the alloy steel is comprised of by weight about 0.55–0.70% Copper, about 1.0–6.0% Nickel, and about 1.0–2.2% Chromium.

Abstract: A steel plate for paint use which contains C (0.12% or less), Si (1.0% or less), Mn (2.5% or less), P (0.05% or less), S (0.02% or less), and Cr (0.05% or less), Cu (0.05–3.0%), Ni (0.05–6.0%), Ti (0.025–0.15%), and Cu+Ni (0.50% or more), with PCM being 0.23% or less, in terms of mass %. Said steel plate may contain at least one additional component selected from B (0.0005–0.0030%), Al (0.05–0.50%), Ca (0.0001–0.05%), Ce (0.0001–0.05%), La (0.0001–0.05%), Nb (0.002–0.05%), V (0.01–0.10%), Zr (0.002–0.05%), and Mo (0.05–0.5%), in terms of mass %. This steel plate provides good weldability as well as good painting durability in a salt-polluted environment.

Abstract: The present invention relates to a low alloy, low to medium carbon content, high strength, and high ductility steel composition. The present invention contains relatively low nickel content, yet exhibits high performance characteristics and is manufactured at a substantially lower cost than alloy compositions containing high levels of nickel.

Abstract: A non-heat treated seamless steel tube has a composition consisting of, by weight, C: 0.10 to 0.25%, Si: 0.05 to 1.0%, Mn: 0.5 to 2.5%, P: not more than 0.03%, S: not more than 0.05%, Cr: 0.5 to 2.0%, V: 0.03 to 0.3%, Al 0.003 to 0.10%, N: 0.001 to 0.

Abstract: An austenitic stainless steel with a composition comprising: at most 0.15% of C; 2% to 10% of Mn; at most 2% of Ni; at most 4% of Cu; 0.1% to 0.4% of N; 10% to 20% of Cr; at most 1% of Si; at most 3% of Mo; and at most 0.7% of Ti; is used to manufacture equipment, for example furnaces, reactors or ducts, or elements of this equipment, or to coat the internal walls of this equipment, said equipment being used to implement petrochemical processes conducted at temperatures of 350° C. to 1100° C. and in which coke can be formed.

Abstract: A welding method includes performing welding to form a weld metal consisting essentially of, in mass %, 1 C: 0.01-0.15%, Si: 0.02-0.6%, Mn: 0.6-3.0%, Al: 0.004-0.08%, Ti: 0.003-0.03%, B: at most 0.005%, Cu: 0-1.2%, Ni: 0-3%, Cr: 0-1.2%, Mo: 0-2%, V: 0-0.05%, Nb: 0-0.

Abstract: A microalloyed steel easy to separate by fracture splitting at low temperatures, which comprises from 0.15 to 0.35 wt % carbon, from 0.5 to 2.0 wt % silicon, from 0.5 to 1.5 wt % manganese, from 0.03 to 0.15 wt % phosphorus, from 0.01 to 0.15 wt % sulfur, from 0.01 to 0.5 wt % copper, from 0.01 to 0.5 wt % nickel, from 0.01 to 1.0 wt % chromium, from 0.001 to 0.01 wt % soluble aluminium, from 0.005 to 0.035 wt % nitrogen, from 0.001 to 0.01 wt % calcium, and from 0.001 to 0.01 wt % oxyge ough separation by fracture splitting at a low temperature, e.g., a connecting rod for engines.

Abstract: The present invention is related to an air melted, substantially graphite and nitrogen-free alloy, aged or not aged by precipitation hardening, specially adapted for gas turbine or internal combustion engine exhaust system parts, comprising a graphite-free microstructure of the following composition: 1 Carbon max 0.4 wt. % Silicon 0.5 to 6 wt. % Manganese 0.1 to 4.5 wt. % Phosphorous 0.01 to 0.08 wt. % Nickel 13 to 38 wt. % Chromium 0 to 6 wt. % Sulphur max 0.12 wt. % Nitrogen max 0.02 wt.

Abstract: Process for producing a drawn wire, in particular a wire for reinforcing tires, having a diameter of less than 0.3 mm by drawing a base wire rod having a diameter of greater than 5 mm or a predrawn base wire made of steel with the following composition by weight: carbon≦40×10−3% nitrogen≦40×10−3%, the carbon and nitrogen satisfying the relationship C+N≦50×10−3%, 0.2%≦silicon≦1.0%, 0.2%≦manganese≦5%, 9%≦nickel≦12%, 15%≦chromium≦20%, 1.5%≦copper≦4%, sulfur≦10×10−3%, phosphorus<0.050%, 40×10−4%≦total oxygen≦120×10−4%, 0.1×10−4%≦aluminum≦20×10−4%, magnesium≦5×10−4%, 0.

Abstract: A high strength steel for dies has excellent machinability and consists essentially of, by weight, 0.005 to 0.1% C, not more than 1.5% Si, not more than 2.0% Mn, from 3.0 to less than 8.0% Cr, not more than 4.0% Ni, 0.1 to 2.0% Al, not more than 3.5% Cu, and balance of Fe and inevitable impurities including N and 0, and which has a metal structure whose primary microstructure is martensite, wherein N and 0 as impurities are restricted to amount ranges of not more than 0.02% N and not more than 0.003% 0.

Abstract: A steel plate for paint use which contains C (0.12% or less), Si (1.0% or less), Mn (2.5% or less), P (0.05% or less), S (0.02% or less), and Cr (0.05% or less), Cu (0.05-3.0%), Ni (0.05-6.0%), Ti (0.025-0.15%), and Cu+Ni (0.50% or more), with PCM being 0.23% or less, in terms of mass %. Said steel plate may contain at least one additional component selected from B (0.0005-0.0030%), Al (0.05-0.50%), Ca (0.0001-0.05%), Ce (0.0001-0.05%), La (0.0001-0.05%), Nb (0.002-0.05%), V (0.01-0.10%), Zr (0.002-0.05%), and Mo (0.05-0.5%), in terms of mass %.

Abstract: A high-strength spring steel having an Hv of at least 600 and an impact value of at least 40 J/cm2, comprising 0.40 to 0.70 wt. % carbon, 1.00 to 2.50 wt. % silicon, 0.30 to 0.90 wt. % manganese, 0.50 to 1.50 wt. % nickel, 1.00 to 2.00 wt. % chromium, 0.30 to 0.60 wt. % molybdenum, 0.25 to 0.50 wt. % copper, 0.01 to 0.50 wt. % vanadium, 0.010 to 0.050 wt. % niobium, 0.005 to 0.050 wt. % aluminum, 0.0045 to 0.0100 wt. % nitrogen, 0.005 to 0.050 wt. % titanium, and 0.0005 to 0.0060 wt. % boron, with phosphorus limited to 0.010 wt. % or less, sulfur to 0.010 wt. % or less, and OT to 0.0015 wt. % or less, and the remainder being composed of iron and unavoidable impurities. The spring steel has better hardness and toughness than those of existing spring steel.

Abstract: An ultra-low carbon weathering steel has a carbon content of from about 0.015 wt % to about 0.035 wt %; a copper content of from about 0.20 wt % to about 0.40 wt %; a chromium content of from about 0.40 wt % to about 0.70 wt %; a nickel content of from about 0.20 wt % to about 0.50 wt %; a titanium content of from about 0.02 wt % to about 0.05 wt %; a niobium content of from about 0.03 wt % to about 0.06 wt %; a boron content of from about 0.0015 wt % to about 0.003 wt %; a manganese content of from about 2.0 wt % or less; a phosphorous content of from about 0.012 wt % or less; a sulphur content of from about 0.005 wt % or less; a silicon content of from about 0.40 wt % or less; a molybdenum content of from about 0.50 wt % or less; a vanadium content of from about 0.10 wt % or less; an aluminum content of from about 0.03 wt % or less; and a nitrogen content of from about 0.006 wt % or less.

Abstract: Particulate skeletal iron catalyst is provided which contain at least about 50 wt. % iron with the remainder being a minor portion of a suitable non-ferrous metal and having characteristics of 0.062-1.0 mm particle size, 20-100 m2/g surface area, and 10-40 nm average pore diameter. Such skeletal iron catalysts are prepared and utilized for producing synthetic hydrocarbon products from CO and H2 feeds by Fischer-Tropsch synthesis process. Iron powder is mixed with non-ferrous powder selected from aluminum, antimony, silicon, tin or zinc powder to provide 20-80 wt. % iron content and melted together to form an iron alloy, then cooled to room temperature and pulverized to provide 0.1-10 mm iron alloy catalyst precursor particles. The iron alloy pulverized particles are treated with NaOH or KOH caustic solution at 30-95° C.

Abstract: Skeletal iron catalysts are prepared and utilized for producing hydrocarbon products from CO and H2 feeds by Fischer-Tropsch synthesis process. Iron powder is mixed with aluminum, antimony, silicon, tin or zinc powder and 0.01-5 wt % metal promotor powder to provide 20-80 wt % iron content, then melted together, cooled to room temperature and pulverized to provide 0.1-10 mm iron alloy catalyst precursor particles. The iron alloy precursor particles are treated with NaOH or KOH caustic solution at 30-95° C. to extract or leach out a major portion of the non-ferrous metal portion from the iron, and then dried and reduced under hydrogen atmosphere to provide the skeletal iron catalyst material. Such skeletal iron catalyst is utilized with CO+H2 feedstream in either fixed bed or slurry bed type reactor at 200-350° C. temperature, 1.0-3.0 mPa pressure and gas hourly space velocity of 0.5-3.0 L/g Fe/h to produce desired hydrocarbon products.

Abstract: This invention reveals steel alloys for use in manufacturing reinforcing wires for rubber products, such as tires. The steel filaments made with such steel alloys have an outstanding combination of strength and ductility. The steel alloys of this invention can be manufactured into filaments having a tensile strength in the range of 4000 MPa to 5000 MPa. Additionally, these can be patented in a low-cost process due to their having a very fast rate of isothermal transformation. This allows the steel in the steel wire being patented to transform from a face-centered cubic microstructure to an essentially body-centered cubic microstructure within a very short period. This invention more specifically discloses a steel alloy composition which is particularly suitable for use in manufacturing reinforcing wire for rubber products which consists essentially of (a) iron, (b) about 1.05 to about 1.7 weight percent carbon, (c) about 0.2 to about 0.8 weight percent manganese, (d) about 0.1 to about 0.

Abstract: Systems are provided for vehicular, land-based distribution of pressurized liquefied natural gas at a pressure of about 1035 kPa (150 psia) to about 7590 kPa (1100 psia) and at a temperature of about -123.degree. C. (-190.degree. F.) to about -62.degree. C. (-80.degree. F.). The systems include at least one container that is constructed from an ultra-high strength, low alloy steel containing less than 9 wt % nickel and having a tensile strength greater than 830 MPa (120 ksi) and a DBTT lower than about -73.degree. C. (-100.degree. F.).

Abstract: A steel and tool made therefrom which in a tempered condition of 388 BHN or softer has high strength, high wear resistance together with excellent toughness in the range of 15% elongation and 35 ft-lbs. charpy and having the following composition:______________________________________ C .33-.39 Mn .50-.70 P .025 max. S .025 max. Si .40-.60 Ni 1.05-1.35 Cr 1.33-1.68 Mo .40-.60 Cu .60-.90 Al .010-.

Abstract: A lowly decarburizable spring steel comprises, on a weight basis, 0.51 to 0.70% of C, 0.15 to 2.50% of Si, 0.40 to 1.20% of Mn, 0.005 to 0.100% of Al, 0.005 to 0.050% of S, at least one of 0.05 to 0.30% of Ni and 0.05 to 1.00% of Cu and, optionally, at least one of 0.20 to 1.50% of Cr, 0.05 to 1.00% of Mo, 0.01 to 0.50% of V, 0.010 to 0.300% of Nb and 0.0005 to 0.0050% of B, and the balance consisting of Fe and unavoidable impurities. The spring steel can be remarkably lowered in decarburizability during hot working and heat treatment thereof without need of any decarburization-proofing agents and any specific heat treatment equipment. Accordingly, it has a very excellent effect in that the decarburization thereof can be remarkably decreased with a low cost when it is applied to a coil spring, a flat spring or a torsion bar.

Abstract: Steel useful for the manufacture of molds for the injection molding of plastics, the chemical composition of which includes, by weight: 0.03%.ltoreq.C.ltoreq.0.25%, 0%.ltoreq.Si.ltoreq.0.2%, 0%.ltoreq.Mn.ltoreq.0.9%, 1.5%.ltoreq.Ni.ltoreq.5%, 0%.ltoreq.Cr.ltoreq.18%, 0.05%.ltoreq.Mo+W/2.ltoreq.1%, 0%.ltoreq.S.ltoreq.0.3%, at least one element chosen from Al and Cu in contents of between 0.5% and 3%, optionally 0.0005%.ltoreq.B.ltoreq.0.015%, optionally at least one element taken from V, Nb, Zr, Ta and Ti, in contents of between 0% and 0.3%, optionally at least one element taken from Pb, Se, Te and Bi, in contents of between 0% and 0.3%, the remainder being iron and impurities resulting from the processing, especially nitrogen; the chemical composition additionally satisfying the relations: Kth=3.8.times.C+9.8.times.Si+3.3.times.Mn+2.4.times.Ni+.alpha..times.Cr+1. 4.times.(Mo+W/2).ltoreq.15, with .alpha.=1.4 if Cr<8% and .alpha.=0 if Cr.gtoreq.8%; Tr=3.8.times.C+1.07.times.Mn+0.7.times.Ni+0.57.times.Cr+1.

Abstract: The present invention aims to provide a metal mold for glass, which needs not apply any swab in molding of glass, enabling no-swabbing glass forming. The alloy for the mold comprises by weight Cu: 10 to 80%, Al: 4 to 11%, Cr: 3 to 16%, Ni: 2 to 36%, and at least one rare earth element: 0.02 to 2.08 with the balance consisting of Fe and further comprises at least one member selected from the group consisting of Ti: Al %.times.0.5 to 2, V: Al %.times.0.2 to 1, Zr: Al %.times.0.1 to 0.3, and Nb: Al %.times.0.1 to 0.3. The alloy is gradually cooled from the solidification initiation temperature to 500.degree. C. at a cooling rate of 10.degree. C./min. The surface of the mold is coated with an Al-containing coating or roughened to an average roughness of 0.3 to 5 .mu.m. A solid lubricating film is provided in a fitting portion of the mold, or alternatively a self-lubricating solid is embedded in the fitting portion of the mold.

Abstract: A high strength low alloy steel having a yield strength of at least 100 ksi and a Charpy V-notch impact strength of at least 35 ft-lbs. at minus 84.degree. C. (minus 120.degree. F.) at thickness of up to 6 inches is provided wherein the steel consists essentially of an effective amount up to 0.036% carbon, for low temperature toughness up to 5% manganese, up to 1% silicon, up to 0.015% sulfur, 2 to 4% nickel, up to 2% copper, up to 0.1% niobium, and up to 0.1% aluminum, up to 4.% molybdenum, up to 4% chromium and the balance iron and incidental impurities and is characterized by low carbon bainite microstructure in the as-quenched condition.

Abstract: A soft magnetic alloy having a composition of general formula:(Fe.sub.1-a Ni.sub.a).sub.100-x-y-z-p-q Cu.sub.x Si.sub.y B.sub.z Cr.sub.p M.sup.1.sub.q (I)wherein M.sup.1 is V or Mn or a mixture of V and Mn, 0.ltoreq.a.ltoreq.0.5, 0.1.ltoreq.x.ltoreq.5, 6.ltoreq.y.ltoreq.20, 6.ltoreq.z.ltoreq.20, 15.ltoreq.y+z.ltoreq.30, 0.5.ltoreq.p.ltoreq.10, and 0.5.ltoreq.q.ltoreq.10 and possessing a fine crystalline phase is suitable as a core, especially a wound core and a compressed powder core.

Abstract: The invention provides a novel metallic composition and method of using the same. More particularly, the invention affords a tool steel and a method of heat treating the tool steel. In one of the preferred embodiments the tool steel includes about 0.50 to about 0.65 percent by weight carbon, about 0.090 to about 1.45 percent by weight manganese, up to about 0.030 percent by weight phosphorus, about 0.035 to about 0.070 percent by weight sulfur, about 1.10 to about 1.90 percent by weight chromium, about 0.15 to about 0.40 percent by weight nickel and about 0.20 to about 0.40 percent by weight copper. In one of the preferred embodiments of the present invention the tool steel is heat treated utilizing a heat treatment schedule that includes the steps of a preheat, austenization and a double temper.

Abstract: A high strength, low alloy, low to medium carbon structural steel is provided of the Fe/Cr/C type, said steel characterized by the presence of a small but effective amount of each of Cu and Ni sufficient to enhance the mechanical stability of retained austenite formed following quenching of said steel from its austentizing temperature. Preferably the steel also includes small but effective amounts a Al, Ti and Nb suficient to provide a fine grained microstructure.

Abstract: A high strength, low alloy, low to medium carbon steel casting is provided of the Fe/Cr/C type containing by weight about 0.1 to 0.5% Si, said steel characterized by the presence of a small but effective amount of each of Cu and Ni sufficient to enhance the mechanical stability of retained austenite formed following quenching of said steel from its austenitizing temperature, the amount of Ni being at least sufficient to counteract the destabilizing effect of Si on austenite. Preferably the steel also includes small but effective amounts of Al, Ti and Nb sufficient to provide a fine grained microstructure.

Abstract: A steel product, such as a medium carbon die block, having good impact, ductility, transverse and physical properties, and lower than normal sulphur contents yet having machinability equal or better than higher sulphur levels characterized by a lower than ordinary level of stringer-type inclusions, other inclusions being mainly of the non-deleterious globular type.

Abstract: The invention provides a novel metallic composition and method of using the same. More particularly, the invention affords a tool steel and a method of using the tool steel. In one of the preferred embodiments the tool steel includes about 0.50 to about 0.65 percent by weight carbon, about 0.090 to about 1.45 percent by weight manganese, up to about 0.030 percent by weight phosphorus, about 0.035 to about 0.070 percent by weight sulfur, about 1.10 to about 1.90 percent by weight chromium, about 0.15 to about 0.40 percent by weight nickel, about 0.20 to about 0.40 percent by weight copper and balance percent by weight iron and impurities.

Abstract: A corrosion-resistant carbon sheet steel with good stamping characteristics is disclosed as relating to compositions for steel resistant to atmospheric corrosion, obtained from a basis composition containing elements such as C, Mn, P, S, Al, Si, and Cu, to which are added in various ways the elements Sb, V, Cr, and Ni which make possible obtaining properties such as high resistance to corrosion associated with the stamping characteristics.

Abstract: The invention relates to a precipitation hardening tool steel for mould tools. The steel contains, expressed in weight-%:0.01-0.1 Cfrom traces to max 2 Si0.3-3.0 Mn1-5 Cr0.1-1 Moand Ni as a toughness and hardenability improving element, and Ni and Al as a compound and/or Cu for precipitation hardening purposes, wherein the contents of Ni and Al and/or Cu amount to1-7 Ni1.0-3.0 Al and/or1.0-4.0 Cu,wherein 1.5.times.Al+Cu.gtoreq.2.0, balance essentially only iron, impurities and accessory elements in normal amounts. The invention also relates to a mould tool made from the steel according to the invention.

Abstract: An iron/copper/chromium alloy material for a high-strength lead frame or pin grid array, which comprises 20 to 90% by weight of Cu and 2.5 to 12% by weight of Cr, with the balance being mainly iron, and which has an average grain size number of at least 10 in each of the iron/chromium phase and the copper phase, is prepared by continuous casting, cold-working, and aging.

Abstract: A slicing saw blade comprising a substrate disc and a blade edge consisting essentially of a ultra-hard material deposited along a peripheral edge of said substrate disc, said substrate disc being made of a steel consisting essentially of, by weight, not more than 0.10% of C, more than 1.0% but not more than 3.0% of Si, less than 0.5% of Mn, from 4.0% to 8.0% of Ni, from 12.0% of 18.0% of Cr, from 0.5% to 3.5% of Cu, not more than 0.15% of N and not more than 0.004% of S, the sum of C and N being at least 0.10%, the balance being Fe and inavoidable impurities. The saw blade is useful for the production of wafers of a semiconductive material, and has a long service life.

Abstract: Bending and torsional ductility of high tensile reinforcement steel wire or cord, especially for rubber products, such as tires, is improved by taking care that the steel compositions that are currently used for such application, have an extra low sulphur content, i.e. below 0.015%, preferably below 0.010%.

Abstract: A heat-resisting steel suitable for use in valve parts of internal combustion engine is disclosed, which consists essentially by weight percentage of 0.3-0.5% of C, more than 1.0% to 2.5% of Si, 0.1-2.0% of Mn, 0.5-7.0% of Cr, 0.3-2.0% of Mo and 0.1-1.0% of V as basic ingredients, at least one of 0.3-2.0% of Cu and 0.001-0.05% of REM as sub-ingredients and if necessary, at least one of 0.1 to less than 2.0% of Ni, 0.1-1.5% of W and 0.03-1.0% of Nb+Ta, and the balance of Fe and inevitable impurities.

Abstract: Production of steel materials which show excellent HAZ qualities when used for welded structures and containC: 0.001 to 0.300%Mn: 0.4 to 2.0%P: 0.025% max.S: 0.025% max.Al: 0.007% max.Ti: 0.003 to 0.050%O: 0.0010 to 0.0100%Balance: iron and unavoidable impurities and containing 0.002 to 0.100% of oxide inclusion having a complex grain phase composed of one or more of Ti oxides such as TiO, Ti.sub.2 O.sub.3 having a particle size of not larger than 10 .mu.m.

Abstract: Low activation ferritic alloys, specifically bainitic and martensitic stainless steels, are described for use in the production of structural components for nuclear fusion reactors. They are designed specifically to achieve low activation characteristics suitable for efficient waste disposal. The alloys essentially exclude molybdenum, nickel, nitrogen and niobium. Strength is achieved by substituting vanadium, tungsten, and/or tantalum in place of the usual molybdenum content in such alloys.