Abstract: A titanium-base alloy characterized by a combination of good oxidation resistance at temperatures of at least 1500.degree. F. and good cold rollability. The alloy consists essentially of, in weight percent, molybdenum 14 to 20, niobium 1.5 to 5.5, silicon 0.15 to 0.55, aluminum up to 3.5, oxygen up to 0.25 and balance titanium. Preferably, molybdenum is 14 to 16, niobium is 2.5 to 3.5, silicon is 0.15 to 0.25, aluminum is 2.5 to 3.5 and oxygen is 0.12 to 0.16. The alloy may be in the form of a cold reduced sheet or foil product having a thickness of less than 0.1 inch. This product may be produced by cold rolling to effect a reduction within the range of 10 to 80%.

Abstract: A pack assembly for use in hot rolling a material sensitive to heat loss, such as gamma titanium aluminide. The pack assembly has a pair of opposed deformable metal cover plates adjacent opposite outer major surfaces of at least one flat product of the material to be hot rolled positioned between the cover plates. A continuous thermal barrier is positioned between each of the outer major surfaces of each of the cover plates.

Abstract: An alpha-beta titanium base alloy comprising, in weight percent, 0.04 to 0.10 silicon and 0.03 to 0.08 carbon, characterized by an increase in strength over that of the alloy lacking the silicon and carbon additions. The alloy may additionally comprise 6 aluminum, 4 vanadium, up to 0.3 iron and up to 0.25 oxygen.

Abstract: A grinding machine has a grinder and a grinding hood for confining and collecting fumes and grinding swarf from the workpiece.

Abstract: A titanium-base alloy having good elevated temperature properties, particularly creep resistance in the 950.degree. to 1100.degree. F. temperature range. The alloy consists essentially of, in weight percent, aluminum 5.5 to 6.5, tin 2.00 to 4.00, preferably 2.25 to 3.25, zirconium 3.5 to 4.5, molybdenum 0.3 to 0.5, silicon above 0.35 to 0.55, iron less than 0.03, oxygen up to 0.14, preferably up to 0.09 and balance titanium.

Abstract: The production of titanium articles that are free from low-density inclusions by the use of titanium sponge particles for melting which particles have substantially a maximum particle size of -6 mesh and finer, preferably -8 mesh and finer.

Abstract: The production of titanium articles that are free from low-density inclusions by the use of titanium sponge particles for melting which particles have substantially a maximum particle size of -6 mesh and finer, preferably -8 mesh and finer.

Abstract: Electric arc apparatus and an associated method are provided. Pairs of aligned cooperating coils are positioned on opposed sides of a crucible. In a preferred embodiment, three such pairs which overlap each other are employed so as to sequentially generate magnetic fields so as to provide a uniform magnetic field which will rotate the arc between the electrode and the crucible interior in a first direction. The arc rotation may be reversed. It is preferred that the maximum magnetic field created by each pair of coils be out of time phase with respect to the other coil's magnetic field. This apparatus and the associated method serve to resist undesired irregularities in the ingot exterior surface which irregularities would require subsequent treatment and result in loss of metal.