Abstract: An alloy steel having the capability of retaining high hardness at elevated temperature for a prolonged time is suitable for use as a high speed tool steel. The alloy steel comprises in % by weight: 0.7-1.4 C; less than 1 Mn; less than 0.04 P; up to 0.7 Si; 3-6 Cr; 4-12 Mo; less than 0.5 Co; 0.5-2.25 V; 1-7 W; up to 1.25 Al; at least one of 0.04-2.5 Nb; 0.025-2.5 Zr; 0.08-4.75 Ta and 0.005-0.7 Ti; balance substantially Fe. The alloy may also have an S content of 0.036-0.300; Mn of 0.30-1.35 and may optionally be treated when in a liquid state with up to 0.05 of Mg or Ca.

Abstract: A case carburizable stainless steel alloy intended to be used at operating temperatures up to 700.degree. F. The alloy is able to achieve and maintain a high surface hardness when carburized and heat treated and combines high fracture toughness, hot hardness, metal-to-metal wear resistance and corrosion resistance while retaining core ductility and strength. The alloy consists essentially of (in weight percent) 0.1 to 0.25% carbon, 0 to 1% silicon, 0 to 1% manganese, 13 to 19% chromium, 1.75 to 5.25% nickel, 3 to 5% molybdenum, 0.25 to 1.25% vanadium, 5 to 14% cobalt, 0.01 to 0.1% niobium; 0 to 0.02% boron; and the balance iron and incidental impurities. The alloy is particularly suited for use in bearing applications and also in cams, shafts, gears, bolts and like articles exposed to elevated temperatures and corrosive atmospheres.

Abstract: A modified H-13 hot work die steel in which impact toughness and thermal fatigue resistance is greatly improved. The steel consists of in weight %:______________________________________ Carbon (C): 0.34-0.40, Manganese (Mn): 0.25-0.45, Silicon (Si): 0.85-1.15, Chromium (Cr): 5.00-5.40, Nickel (Ni): 0.30 max, Molybdenum (Mo): 1.20-1.50, Vanadium (V): 0.31-0.52, Niobium (Nb): 0.02-0.09, Iron (Fe) and Incidental impurities: Balance ______________________________________The steel also preferably includes about 0.01-0.20 weight % titanium (Ti) and is preferably subjected to premium quality treatment, including remelting and homogenization, either thermal or mechanical (by hot working).

Abstract: A high strength vacuum melted ferrous alloy having enhanced fracture toughness comprising not more than about 0.01% by weight sulfur, not more than about 0.1% manganese, and titanium in an amount in atomic percent of not less than about twice the atomic percentage of sulfur present in the alloy. Other detailed limits of titanium, zirconium, and niobium are also disclosed.

Abstract: A work hardened nickel-cobalt alloy having high strength and ductility at temperatures of about 1300.degree. F. is provided consisting essentially by weight of about 0.05% max carbon, about 20%-40% cobalt, about 6%-11% molybdenum, about 15%-23% chromium, about 1.0% max iron, about 0.0005%-0.020% boron, about 0%-4% titanium, about 0%-2% columbium and the balance nickel, the alloy having been cold worked at a temperature below the HCP-FCC phase transformation zone to a reduction in cross-section between 5% and 50%.

Abstract: A new high speed steel with improved cutting life is provided consisting essentially of about 0.7 to 1.6% carbon, about 0.2 to 1.0% silicon, about 0.2 to 0.8% manganese, up to about 0.2% sulphur, about 0.5 to about 20% tungsten, about 0.5 to about 10% molybdenum, about 0.5 to 5% chromium, about 0.5 to about 6% vanadium, up to about 10% cobalt, more than 0.03% to about 0.20% phosphorus, the balance iron with residual impurities in ordinary amounts.

Abstract: Tubular metal products and methods of making tubular metal products for use in sour gas wells, which are characterized by resistance to hydrogen sulfide embrittlement at temperatures up to about 600.degree. F., are provided based upon an alloy having the composition up to about 0.035% maximum carbon, up to about 0.15% maximum silicon, up to about 0.15% maximum manganese, up to about 0.010% maximum sulfur, up to about 0.015% maximum phosphorus, about 19.0% to about 21.0% chromium, about 33.0% up to 37.0% nickel, about 9.0% to about 10.5% molybdenum, up to about 1.00% titanium, up to about 0.015% boron, up to about 2% iron and the balance cobalt, said tubular product having been strengthened by explosive shock loading which may be followed by heat treatment to further strengthen the tubular product. A small amount of cold work between the explosive shock strengthening treatment and heat treatment may be used to control the size and shape of the product and provide additional strengthening if needed.

Abstract: A wear and corrosion resistant steel bearing and article are provided characterized by superior rolling contact fatigue life and consisting essentially of______________________________________ C about 0.8 - 1.6% Si about 0.50% Max. Mn about 0.50% Max. S about 0.10% Max. P about 0.015% Max. Cr about 12 - 20% Mo about 2 - 5% W about Up to 3.0% V about 0.5% - 3.0% Ti about Up to 0.5% Al about 0.03% Max. Ni about 0.50% Max. Co about 0.50% Max. Cu about 0.50% Max. B about 0.05% Max. N about 0.05% Max. Fe + incidental Balance impurities ______________________________________The steel is made by vacuum induction melting and forming into electrodes and then vacuum arc remelting said electrodes into an ingot for subsequent working into articles.

Abstract: Tubular metal products and methods of making tubular metal products for use in sour gas wells, which are characterized by resistance to hydrogen sulfide embrittlement at temperatures up to about 600.degree. F., are provided based upon an alloy having the composition up to about 0.035% maximum carbon, up to about 0.15% maximum silicon, up to about 0.15% maximum manganese, up to about 0.010% maximum sulfur, up to about 0.015% maximum phosphorus, about 19.0% to about 21.0% chromium, about 33.0% up to about 37.0% nickel, about 9.0% to about 10.5% molybdenum, up to about 1.0% titanium, up to about 0.015% boron, up to about 2% iron and the balance cobalt, said tubular product having been heat treated in the range 1350.degree. F. to 1500.degree. F. after cold working up to about 75%.

Abstract: This invention provides bearing parts and a bearing steel characterized by rolling contact fatique life many times that of bearing parts and steels now in use. The steel composition is broadly about 0.7 to 1.0% carbon, up to 0.50% silicon, up to 0.50% manganese, about 3.75 to 4.75% molybdenum about 3.75 to 4.50% chromium, about 0.20 to 1.00% vanadium and the balance iron with usual impurities in ordinary amounts.